Napoleon 学术英语视听说unit1原文
大学学术英语视听说教程下册听力原文
大学学术英语视听说教程下册听力原文Lesson1、1-1-4Lecturer:Today, I am going to talk to you about one of the most im portant historical figures in European history-Napoleon Bonaparte Let's start by talking about his early life. Napoleon was born in 1769 on the island of Corsica. When he was only 10 years old, his father sent him to military school in France. Napoleon was not a very good student in most of his classes, but he excelled in mathematics and in military scienceWhen Napoleon was 16 years old, he joined the french army In that year, 1785，he began the military career that would bring him fame, power, riches, and finally, defeat. After eight years in the army, Napoleon became a general. He was only 24.Napoleon had many victories on the battlefield but he also became involved in French law and politics. And in 1804 at the age of 35，he became the first emperor of france.Napoleon had many victories on the battlefield, but he also became involved in French law and politics. And in 1804 at the age of 35，he became the first emperor of france Napoleon was many things. He was, first of all, a brilliant military leader. his soldiers were ready to die for him. as a result, Napoleon won many military victories. At one time he controlled most of Europe, but some countries, including England, Russia,and Austria, fought fiercely against Napoleon His defeathis end- came when he decided to attack russia In this military campaign against Russia, he lost most of his army .The great French conqueror died alone, deserted by his famil and his friends. The year was 1821，and Napoleon was only 51Lesson2、1-2-4Lecturer:The lecture for th is class is a b out the city of pom peii and the natural disaster that occurred there almost 2,000 years ago .Today many rich people w ho live in large m etropolitan areas such as beijing, Paris, and new york leave the city in the summer. They go to the m ountains or to the seashore to escape the city noise and heat. two thousand years ago, wealthy Rom ans did the sa me thing. They left the city of rom e in the summer. many of these wealthy rom ans spent their sum mers in the city of Pom peii, a beautiful city located on the bay of Naples, on the mediterranean Sea.In the sum mer of the year 79 Ce, a young rom an boy w ho later became a very fa m ous rom an historian w as visitin g h is uncle in Pompeii. The boy's name was pliny the younger.One day pliny w as loo king up at the sky. He saw a frightening sight. It w as a very large dark cloud. This b lack cloud rose hig h into the sky. What Pliny saw was the eruption of the volcano called Mount vesuvius.Rock and ash flew through the air. the city of Pom peii was at the foot of mount vesuvius When the volcano first erupted, many people were a ble to get out of the city and escape death. In fact, 18,000 people escaped the terrible disaster. U nfortunately, there was not enough time for everyone to escape. More than 2,000 people died. These unlucky people were buried alive under the volcanicash. The eruption lasted for about three days.When the eruption w as over, Pom peii w as buried under 20 feet of volcanic rock and ash. the city of Pom peii w as forgotten for alm ost 1,700 years.In the year 1748 an Italia n farmer was digging on his farm. As he was digging, he uncovered a part of a wall of the an cient city of Pompeii. Soon, archaeologists began to dig in the area. as time went by, much of the a ncient city of Pompeii w as uncovered. today tourists come from all over the world to see the ruins of the fa m ous city of pompeii.Lesson3、1-3-4Lecturer:I'd like to talk to you today about Steve Jobs. Jobs was someone who changed the world, because he changed the way people act every single day.Jobs was born in 1955. He grew up in California, in an area that later became known as the Silicon valley. When he was about 14 years old, hebecame friends with Stephen Wozniak Wozniak was what people in those days called an electronics whiz kid. He liked to design and build his own electronic equipment.In 1975，Wozniak started designing a personal computer. This at a time when nobody owned personal computers in their homes. Jobs was young. He was only 20. But even then he had a sharp business brain. Jobs convinced Wozniak that they could build these personal computers in his garage and sell them. a year later, Jobs and wozniak founded the apple computer Company, and started building and selling personal computers.When their apple ii computer went on the market in 1977，it became a huge success Suddenly there was a mass market for a computer that people could buy at a store and use sitting in their own homes The apple ll became the world's first mass produced personal computer, and by the age of 25，Steve Job was a millionaire.Jobs was brilliant in many ways, but he was not always very good at working with other people. He needed everything to be perfect, and this caused problems at Apple. In 1985，then, Jobs left Apple and started a new computer company and soon after he also went into business with a company called Pixar Pixar was a company trying to develop a system for using CGI-computer-generated imagery to be used in animated films And Jobs was just the person to help them.In 1995. Pixar released the movie tov story It was the first full-length, computer-generated, animated film. It was a big hit and Pixar became a very, very profita ble company and steve Jobs became a very, very rich man a billionaire in fact.In the 10 years after leaving apple jobs learned a lot about working with people and running a company. So when he returned to apple in 1995. he made many changes.Without Jobs, Apple was not doing so well. But Jobs had a also wanted them to be beautiful objects that people would e vision. He didn t only want personal computers to be useful, h enjoy looking at and using. In 1998，Apple introduced the imac a new desktop computer and the next year, the iBook, a new laptop computer. People thought both were very attractive and they immediately became very popular, and apple became profitable company again.But Steve Jobs wasnt finished. He had an even bigger vision He believed that personal computers would become the center the hub, of people's digital lives. So in 2001 Jobs introduced Apple's"digital hub"strategy He told the world that the computer would become the hub of all their electronic equipment. You could connect your camera, your music player and your video recorder to the computer and manage all your videos, photos, and music using iTunes, iMovie, iPhoto, and other apple programs, or"apps "Over the next 10 years, apple created productsthat made jobs vision a reality. In 2001，the company introduced the iPod, which quickly became the most popular digital music player. In January 2007，Jobs introduced the iPhone and suddenly your phone became like a mini computer. It was like having an iPod, a camera, and a phone all in one device that you could hold in your hand. Then three years later he released the iPad onto the market. This really was a small, light computer that you could hold in your hand.And to use it all you had to do was touch the screen.Jobs'final vision before he died in Octo ber 2011 was Apple iCloud This is a system that allows apple users to store and manage their data and applications, not in their computer, but over the internet.Jobs may be gone, but there is no question that his vision lives on Jobs was someone who changed the world, not just for our own time, but maybe, who knows, for all time.Lesson4、1-4-4Lecturer:Let's talk a little today a out how roller coasters work and thephysics in volved in a ride on aroller coaster. I'm sure many of you have taken a ride on a roller coaster Person ally, I don't ever want to ride on one again. When i was young, my sister took me on a roller coaster, and I never forgot that frigh te n in g experience.A simple roller coaster consists o f a frame with a track on it .Thetrack is very much like a train track. Th is track goes over a serie s of hills and around curves following a path that ends at the sam e p lace it started, a train of cars travels around on th is track, very fast. the cars have two sets of w heels. 0 ne set of w heels rolls on top of the track and the other set of w heels rolls below the track the w heels below the track are there to keep the fa stm oving cars fro m co m in g o ff th e track.Roller- coaster cars, as you prob ably know, d on't have any m otors or es In stead, a ch ain pulls the cars up the first, tallest and steepest, h ill.A nd th isis how the ride begin s then at the top of the hill, the ch ain com es off th e cars, and gra v ity takes over. Gravity pushes the cars dow n the other sid e of th e h ill. T he taller a nd steeper the first h ill is, the fa ste r th e rid e willbe, and the farther the cars willtrave l.As the cars roll downhill, they gain speed. When they reach the botto m of the first h ill, the cars have enough speed a d e nergy to send the m up the next hill. A s th e cars n ear the top of the second hill, they begin to slow down. but then, th e cars reach the top of th at hill and start down the other sid e, a n d gravity again pushes them tow ard the ground. T his process repeats on each hill.OK, so let's go over th is process a g ain. First, the cars are u led b y a ch ain up th e first, h ig h est h ill. Then they go d ow n a very steep slope At th is point, there is enough energy to pull the cars up and over the next hill. a gain, w hen they reach the bottom of that hill, there is enoughenergy to clim b the next h ill. T he roller-coaster cars lose energy as the rid e contin ues so the hills have to be sm aller toward the end of the track F in ally, we roll to a stop on ground level, rig ht w here we began.Tom orrow we will talk about the forces that press on our bod ies and keep us in our seats w hen the cars of a roller coaster travel in a loop th at puts us up side down.Lesson5、1-5-4Lecturer:What I'd like to talk to you about today is child language development i know that you all are trying to learn a second language, but for a moment, lets think about a related topic:How children learn their first language What do we know about how babies develop their language and communication ability？Well, we know babies are able to communicate as soon as they are bom-even before they learn to speak. At first, they communicate by crying. This crying lets their parents know when they are hungry, or unhappy, or uncomfortable. However, they soon begin the process of acquiring language The first stage begins a few weeks after birth. At this stage babies start to make cooing noises when they are happy. Then, at around four months they begin to babble Babies all over the world begin to babble around the same age and they all begin to make the same kinds of babbling noises. by the time they are ten months old however the babbling of babies from different languagebackgrounds sounds different. For example, the babbling of a baby in a Chinese-speaking home sounds different from the babbling of a baby in an English-speaking home.Babies begin a new stage of language development when they start to speak their first words. At first, they invent their own words for things. For example, a baby in an english speaking home may say"baba"for the word ball or" kiki"for These words are usually the names of things that are in the cat. In the next few months, babies will acquire a lot of words baby s environment, words for food or toys, for example.They will begin to use these words to communicate with others. For example, if a baby holds up an empty juice cup and says "juice, the baby seems to be saying, I want more juice"or May i have more juice？This word juice is really a one-word sentence.The next stage of language acquisition begins around 18months, when babies begin to say two-word sentences. They produce what is called"telegraphic" gether. The babies use a kind of grammar to put words speech, meaning they leave out all but the most essential words. an English-speaking child might say something like"Daddy, up, which actually means"Daddy, pick me up, please. Then, between two and three years of age, children learn more and more grammar. For example, they begin to use the past tense of verbs. In other words, they learn the rule for making the past tense of many verbs. Thechildren begin to say things such as "I walked home" and"I kissed Mommy. They also overgeneralize this new grammar rule and make a lot of mistakes. For example children often say such things as"i goed to bed"instead of"I went to bed, or"leated ice cream" instead of"I ate ice cream In other words, the children have learned the past-tense rule for regular verbs such as walk and kiss, but they haven t learned that they cannot use this rule for all verbs Some verbs like eat are irregular and the past tense forms for irregular verbs must be learned individually. anyway these mistakes are normal. The children will soon learn to use the past tense for regular and irregular verbs correctly. They then continue to learn other grammatical structures in the same way.If we stop to think about it, it' s quite amazing how quickly children all over the world learn their language. It's also amazing how similar the process is for babies all over the world. You probably dont remember anything about how you learned your first language. But now that you' ve learned learning a first and secon d language may be similar and ss of something about the process, think about how the proc different. After class, why not make a list of some similarities and differences in the processes of child and adult lar learning. Then we'll talk about it next time we meed .Lesson7、1-7-4Lecturer:When people think about a robot, they often picture a machine that looks something like a human being. However, that' s not always the case！Most robots do not look much like a human being at all. They look like machines, because that's what most of them are industrial machines. Today, I'm going to talk mostly about industrial robots used in industry. These are robots that do work that for humans would be physicall demanding, repetitive, dangerous, or very boring.Most industrial robots work on an assembly line in a factory.For example, a robot might put lids on jars of fruit or stack boxes for shipping. In a car factory, robotic arms on th assembly line join the parts of the car together Other robots tighten the bolts on the cars wheels or paint the car. There are thousands of robots putting cars together in auto assembly plants. These robots are very precise when repeating a task.For example, they always tighten bolts with the same exac amount of force. They always move a heavy engine to exactly where it should be. and they always put a hole in the exact same place in every car door, hour after hour. These areexamples of robots doing the work humans could do, but the robots are doing the work more efficiently and precisely.So, just how do robots work？To do its job, a robot first needs a control system. This control system directs the robots mechanical parts.The control system of a robot is, so to speak, the robot' s"brain "So how does a robot "learn"which action to do first and which of its moving parts needs to do that action？The robot learns its job with the help and guidance of a human being. To teach an industrial robot to do something, first a person must use a handheld computer The computer is used to guide the robot's"arm and hand"through the motions it needs to do. Then the rob ot stores the exact movements in its computer memory. The robot has sensors to gather information. So now, the robot will use its sensors to direct its actions. The robot"tells"its moving parts what to do and then it performs the action. For example, to pick up and move a box, the robot first finds the box. next it decides the weight of the box. Then it decides how much force is needed to lift and move the box. and finally, it finds the correct place to put the box down. It repeats the process over and over until it is turned off It does the same job until it is given a new job and new program to follow.Some scientists think that rob ots of the future will be smarter than todays robots. They may also look more human like, or even animal-like. In fact, they may work and"think more like humans do. The industrial robots we've been talkin about so far today are automatic robots. They are known as automatic robots because they are programmed to follow a specific series of movements. Usually, they have parts that move, butthey really don t travel around On the other hand, an autonomous machine can change its behavior in relation to its surroundings. For example, an autonomous robot with wheels or legs to move around can change direction when it senses that there is something in its way. a robot such as Hondas famous asIMo can detect the movements of people nearby. It can move to avoid bumping into someone coming toward it. asimo can even learn to dance by following themovements of a dancer next to it i don t know whether or when people will welcome autonomous machines or human-like robots. i guess that we will need to think about that in the robo-doctor, robo-teacher, robo-pet, or even our robo-Rriend future, Well need to think about how we will interact with or Think about that when you're doing your homework this evening. Would a robo-friend help you do your homework？。
实用文库汇编之视听说听力原文
*作者：座殿角*作品编号48877446331144215458创作日期：2020年12月20日实用文库汇编之Lesson 1 Napoleon Today, I’m going to talk to you about one of the most important historical figures in European history: Napoleon Bonaparte. Let ’s start by talking about his early life. Napoleon was born in 1769 on the island of Corsica. When he was only 10 years old, his father sent him to military schoolin France. Napoleon was not a very good student in most of his classes, but he excelled in mathematics and military science. When he was 16 years old,he joined the French army. In that year 1785,he began the military career that would bring him fame ,power,riches and finally defeat. Napoleon became a general in the French army at the young age of 24. Napoleon had many victories on the battlefield but he also became involved in French law and politics. And in 1804, at the age of 35,he became the first emperor of the France.Napoleon was many things. He was, first of all, a brilliant military leader. His soldiers were ready to die for him. As a result, N.won many military victories. At one time he controlled most of Europe, but some countries, including England, Russia, and Austria fought fiercely against him. His defeat —“his end”came when he decided to attack Russia. In this military campaign against Russia, he lost most of his army.The great French conqueror died alone – deserted by his family and friends in 1821. Napoleon was only 51 years old when he died.=================================================== ========Lesson 2 PompeiiThe lecture for this class is about the city of Pompeii. A natural disaster occurred there almost 2000 years ago.Today many rich people who live in large metropolitan areas such as Beijing, Paris and New York leave the city in the summer. They go to the mountains or to the seashore to escape the city noise and heat.2,000 years ago, wealthy Romans did the same thing.They left the city of Rome in the summer. Many of these wealthy Romans spent their summers in the city of Pompeii, a beautiful city, located on the Bay of Naples.In the summer of the year 79 C.E., a young Roman boy who later became a very famous Roman historian was visiting his uncle in P.. The boy’s name was Pliny the Younger. One day Pliny was looking up at the sky. He saw a frightening sight. It was a very large dark cloud. This black cloud rose high into the sky. What Pliny saw was the eruption of the volcano called Mount Vesuvius.Rock and ash flew through the air. The city of P . was at the foot of Mt. V.. When the volcano first erupted, many people were able to get out of the city and to escape death. In fact, 18,000 people escaped the terrible disaster.Unfortunately, there was not enough time for everyone to escape. More than 2,000 people died. These unlucky people were buried alive under the volcanic ash.The eruption lasted for about 3 days. When the eruption was over, P . was buried under 20 feet of volcanic rock and ash. The city of P . was forgotten for almost 1,700 years.In the year of 1748 an Italian farmer was digging on his farm. As he was digging, he uncovered a part of a wall of the ancient city of P.. Soon archaeologists began to dig in the area. As time went by, much of the ancient city of P. was uncovered. Today tourists come from all over the world to see the ruins of the famous city of Pompeii.=================================================== ========Lesson 4 Roller CoasterLet's talk about the physics involved in a ride on a rollercoaster. I'm sure many of you have taken a ride on a roller coaster. A simple roller coaster consists of a frame with a track on it. The track is very much like a train track, this track goes over a series of hills and around curves. It follows a path that ends at the same place it started. A train of cars travels around on this track, very fast. The cars have two sets of wheels. One set of wheels rolls on top of the track, and the others set of wheels rolls below the track. The wheels below the track keep the fast moving cars from coming off the track, roller coaster cars as you probably know don't have any motors or engines. Instead, a chain pulls the cars up the first, tallest and steepy staff hill, this is how the ride begins. Then, at the top of the hill the chain comes off the cars and gravity takes over. gravity pushes the cars down the other side of the hill. the taller and steeper the first hill is, the faster the ride will be. And the farther the cars will travel. as the cars rolled downhill they gained speed. the cars have enough speed and energy to send them up the next hill. as the cars near the topof the second hill they begin to slow down. but then, the cars reached the top of that hill, and start down the other side. gravity again pushes them toward the ground. this process repeats on each hale. Okay, so let's go over this process again. first, the cars are pulled by a chain up the first highest hill. then they go down a very steep slope, at this point, there is enough energy to pull the cars up and over the next hill. when they reached the bottom of that hill, there is enough energy to climb the next hill, the roller coaster cars lose energy as the ride continues. so, the hills have to be smaller toward the end of the track, finally we roll to a stop on ground level right where we began.=================================================== =====Lesson 5 Language: How Children Acquire TheirsWhat I’d lie to talk to you about today is the topic of childlanguage development. I know that you all are trying to develop a second language, but for a moment, let’s think about a related topic, and that is: How children develop their first language.What do we know about how babies develop their language and communication ability? Well, we know babies are able to communicate as soon as they are born,even before they learn to speak their first language. At first, they communicate by crying. This crying lets their parents know when they are hungry, or unhappy, or uncomfortable. However, they soon begin the process of acquiring their language. The first state of language acquisition begins just a few weeks after birth. At this stage, babies start to make cooing noises when they are happy. Then, around four months of age they begin to babble. Babies all over the world begin to babble around the same age, and they all begin to make the same kinds of babbling noises. Now, by the time they are ten months old, however, the babbling of babies from different language backgrounds sounds different.For example, the babbling of a baby in a Chinese-speaking home sounds different from the babbling of a baby in an English-speaking home. Babies begin a new stage of language development when they begin to speak their first words. At first, they invent their own words for things. For example, a baby in an English-speaking home may say ―baba‖for the word ―bottle‖or ―kiki‖for ―cat.‖In the next few months, babies will acquire a lot of words. These words are usually the names of things that are in the baby’s environment, words for food or toys, for example. They will begin to use these words to communicate with others. For example, if a baby holds up an empty juice bottle and then says ―juice,‖to his father, the baby seems to be saying, ―I want more juice, Daddy‖or ―May I have more juice, Daddy?‖This word ―juice‖is really a one-word sentence.Now, the next stage of language acquisition begins around the age of 18 months, when the babies begin to say two-wordsentences. They begin to use a kind of grammar to put these words together. The speech they produce is called ―telegraphic‖speech because the babies omit all but the most essential words. An English-speaking child might say something like ―Daddy, up‖which actually could mean ―Daddy, pick me up, please.‖Then, between two and three years of age, young children begin to learn more and more grammar. For example, they begin to use the past tense of verbs. The children begin to say things such as ―I walked home‖and ―I kissed Mommy.‖They also begin to overgeneralize this new grammar rule and make a log of grammar mistakes. For example, children often say such thins as ―I goed to bed‖instead of ―I went to bed,‖or ―I eated ice cream‖instead of ―I ate ice cream.‖In other words, the children have learned the past tense rule for regular verbs such as ―walk‖and ―kiss,‖but they haven’t learned that they cannot use this rule for all verbs. Some verbs like ―eat‖are irregular, and the past tenseforms for irregular verbs must be learned individually. Anyway, these mistakes are normal, and the children will soon learn to use the past tense for regular and irregular verbs correctly. The children then continue to learn other grammatical structures in the same way.If we stop to think about it, actually it’s quite amazing how quickly babies and children all over the world learn their language and how similar the process is for babies all over the world.Do you remember anything about how you learned your first language during the early years of your life? Think about the process for a minute. What was your first word? Was it ―mama‖or maybe ―papa‖? Now think also about the process of learning English as a second language. Can you remember the first word you learned in English? I doubt that it was ―mama.‖Now, think about some of the similaritiesand differences involved in the processes of child and adult language learning. We’ll talk about some similarities and differences in the first and second language learning processes tomorrow. See you then.=================================================== ========Lesson 7 RobotsWhen people think about a robot, they often picture a machin e that looks something like a human being. However, that’s no t always the case. Most robots do not look much like a human being at all, they look like machines because that’s what most of them are- industrial machines.Today, I’m going to talk mostly about industrial robots used in industry. These are robots that do work that for humans woul d be physically demanding, repetitive, dangerous or very boring. Most industrial robots work on in an assembly line in a facto ry. For example, a robot might put liz on jars of fruits or start b oxesfor shaping. In a car factory, robotic arms on an assembly l ine join the parts of a car together; other robots tighten the bo ats on the car’s wheelsor paint the car. There are thousands of robots putting cars together in ___ plan. These robots are ver y precise when repeating a task. For example, they always tigh ten boats with the same exact amount of force. They always m ove a heavy engine to exactly where it should be and they alw ays put ahold in the exact same place in every car door hour af ter hour. These are examples of robots doing the work humans could do but the robots are doing the work more efficiently an d precisely.So, just how do robots work? To do its job a robot first needs a control system. This control system directs the robots mecha nical parts. The control system of a robot is sort of speak--a robot brain. So how does a robot learn which action to do first and which of its moving part needs to do that action? A robo t learns its job with the help and guidance of a human being. T o teach an industrial robot to do something, first a person mus t use a hand-held computer. The computer is used to guide the robot’s arm and hand through the motions it needs to do. Then, the robot stores exact movement in its computer memory. The robot ha s sensors to gather information, so now the robot will use its s ensors to direct its actions. The robot tells its moving part wha t to do and then it performs the action. For example, to pick up and move a box, the robot first finds the box, next it decides t he weight of the box. Then it decides how much force is neede d to lift and move the box, and finally, it finds the correct place to put the box down. It repeats the process over and over unti l it's turned off. It does the same job until it is given the job an d new program to follow. Some scientists think that robots of t he future will be smarter than today's robots. They may also lo ok more human like or even animal like. In fact, they may workand think more like humans do. The industrial robots we've be en talking about so far today are automatic robots.They are known as automatic robots because they have progra m to follow a specific series of movement. Usually, they have p arts that move but they really don't travel around. On the othe r hand, an autonomous machine can change itsbehavior in rela tion to its surroundings. For example, an autonomous robot wi th wheelsor legs to move around can change direction when it senses that there are something in its way. A robot such as …c an detect the movement of people nearby. It can move to avoi d bumping into sb. coming toward it. Asthma can even learn to dance by following the movements of a dancer next to it. I do n't know whether or when people would welcome autonomou smachines or human like robots. I guess that we will not only t hink about that in the future. We need to think about how we will interact with our global doctor: robal teacher, robal pet, or even our robal friend.=================================================== ========Lesson 8 A Tidal WaveA tidal wave is a very large and very destructive wall of water that rushes in from the ocean towards the shore. Many scientists call these waves tsunami. In Japanese tsunami means “storm wave.”But do you know that tidal are not caused by storms and that they are not true tidal at all? A true tidal is the regular rise a waves and fall of ocean waters, at definite times each day, but a tidal wave comes rushing in suddenly and unexpectedly. A tidal wave is caused by an underwater earthquake. The word “seaquake” is made up of two words, the word “sea”which means “ocean”and the word “quake”. “To quake” means “to shake” or “to tremble.”When a seaquake takes place at the bottom of the ocean, the ocean floor shakes and trembles, and sometimes the ocean floor shifts. It is this shaking that produces the tidal wave. Thetidal wave begins to move across the sea at great speed. Tidal waves have taken many human lives in the past. Today scientists can predict when a tidal wave will hit land. They use a seismograph to do this. A seismograph is an instrument that records the strength, the direction, and the length of time of an earthquake or seaquake. It is not possible to hold back a tidal wave, but it is possible to warn people that a tidal wave is coming. This warning can save many lives.=================================================== ========Lesson 9 Levels of LanguageToday I want to talk about levels of language usage. You probably have noticed that people express similar ideas in different ways, depending on the situation they are in. This is very natural. All languages have two general, broad categories, or levels of usage: a formal level and an informal level. Englishis no exception. I’m not talking about correct and incorrect English. What I’m talking about are two levels of correct English. The difference in these two levels is the situation in which you use a particular level. Formal language is the kind of language you find in textbooks, reference books such as encyclopedias, and in business letters. For example, a letter to a university would be in formal style. You would also use formal English in compositions and essays that you write in school. People usually use formal English when they give classroom lectures or speeches and at ceremonies such as graduations. We also tend to use formal language in conversations with persons we don’t know well or with people we have a formal relationship with, such as professors, bosses, doctors, friends of our parents’, strangers, etc. Informal language is used in conversations with colleagues, family and friends, and when we write personal notes or letters to close friends, as well as in diaries, etc.Formal language is different from informal language in severalways. However, today I’m going to talk only about a couple of ways. First of all, formal language tends to be more polite. Interestingly, it usually takes more words to be polite. For example, I might say to a friend or family member, "Close the door, please", but to a stranger or someone in authority I probably would say "Would you mind closing the door" or "Excuse me, could you please close the door" Using words like "could" and "would" makes my request sound more polite, but also more formal.Another difference between formal and informal language is some of the vocabulary. There are some words and phrases that belong in formal language and others that are informal. Let me give you a couple of examples of what I mean. Let’s say "I’m just crazy about soccer!" But if I were talking to my supervisor or a friend of my parents’, I would probably say "I really enjoy soccer" or "I like soccer very much". Let’s say I’m telling someone some news I heard about the police arresting a criminal. To my friend I might say "The cops bagged thecrook". To my parents’ friend I might say "The police arrested the thief".Although the line between formal and informal language is not always clear and although people are probably less formal today than in the past, it is useful to be aware that these two levels, or categories, do exist. The best way for a non-native speaker of English to learn the difference is to observe the different ways English speakers speak or write in different situations. Television newscasters, your college professors in class, your doctors in their offices, etc, will usually speak rather formally. However, your classmates, teammates, family members, friends, etc. will generally speak in an informal fashion. The difference can be learned over time by observing and interacting with native speakers.=================================================== ========Lesson 10 Power: The Kinds People Use andAbuseJohn Mack, who is the author of a book about power, says that the need for a sense of personal power is one of the primary forces in human life. On the other hand, he also says that a feeling of powerlessness is one of the most disturbing of human emotions ―a feeling to be avoided at all costs. Just what is power? Psychologists define power as the ability to determine or to change the actions or behavior of other people. Psychologists are trying to identify different kinds of power so that they can better understand how people use these different kinds of power to gain control over other people. They are trying to understand how people manipulate other people for good and evil purposes. Psychologists have identified five basic types of power, and I’d like to talk about each of these briefly in the next few minutes.The first type of power is called information power. Some psychologist believe that information power is one of the most effective types of power and control. The person who has information that other people want and need, but do not have, is in a position of power. Why is this? Well, most people like to receive and have information. Having information increases a person’s own sense of power. People who provide information can manipulate those who do not have information. Often, when people receive information, they do not know that they are being manipulated by those who provided the information. The psychologist named Edwards says, for example, that newspapers provide a lot of information to their readers, and that these newspaper readers generally believe the information they read. Readers do not question the accuracy of the reports about world events they read in the newspapers.A second type of power is called referent power. For example, a person may want to behave like the members of a particular group, such as a soccer team ( or a group of classmates), or a person may identify with and want to be like a certain teacher, a friend, or say , a rock star. If you identify with another person, that person has power over you, and that person can influence your actions and behavior. Many people imitate and are controlled by the people they identify with. Let me give you a sad example of the use of this type of power for evil purposes. In the 1970s in Jonestown, Guyana, more than 900 people committed suicide when their religious leader Jim Jones told them to kill themselves. They did what he told them to do because he had referent power over them. They identified with him; they believe him, and they did what he told them to do. More recently a man named David Koresh controlled the lives anddestinies of a small community of men, women, and children in Waco, Texas. Most people in his community died in a fire, along with their leader, during a confrontation with U.S. government agents.A third kind of power is classified as legitimate power. Government officials, according to Edwards, have a lot of legitimate power. When the government decides to raise taxes or make people go to war, most people will do what their government officials tell them to do. One psychologist reported on an experiment that showed an example of this type of power. In this experiment, a researcher asked people on the street to move away from a bus stop. When he was dressed as a civilian, few people moved away from the bus stop. When the researcher was dressed as a guard, most people moved away from the bus stop. The guard’s uniform seemed to give the researcher a look of legitimate power.A fourth kind of power is called expert power. An expert is a person who is very skilled in some area, such as sports, or who knows a lot about something, such as computers. Most people are impressed by the skills or knowledge of an expert. Some of these “experts” use their skills at playing sports or knowing about computers to gain power and influence ―and to gain money or admiration, according to Edwards. In other words, they use their expertise to gain power.Finally, reward or coercive power is used by people who have the power to reward or punish another person’s actions or behavior. Giving a reward will change people’s behavior because it offers people a chance for gain. Giving a punishment may or may not cause the people to do what the powerful person wants them to do, but the changes may not last for a long time. The personwho uses coercive power may also have to carefully watch thatthe less powerful person does, in fact, change his or her actions or behavior.To sum up, then, power may be gained in many ways. It may come from having information that other people want or need; it may come from being a referent for other people to identify with or to imitate; it may come from having an official, or legitimate, position of authority; it may come from having skills or expertise; or it may come from having the power to reward or punish people. We all exercise one or more of these various kinds of power over other people, and other people will try to exercise one or more of these kinds of power over us throughout our lives.=========================================== =======Lesson 11 Asian and African Elephants: Similarities and DifferencesThe African and the Asian elephants are the largest land anima ls in the world. They are really enormous animals. The African and the Asian elephants are alike, or similar, in many ways, but there are differences between the 2 types of elephants, too. What are some of the similarities between the African and the Asian elephant? Well, for one thing, both animals have long no ses, called trunks. An elephant sometimes uses its trunk like a t hird hand. Both kinds of elephants use their trunks to pick up v ery small objects and very large, heavy objects. They can even pick up trees with their trunks. For another thing, both the Afri can and the Asian elephants have very large ears, although the African elephant’s ears are considerably larger.In addition, both animals are intelligent. They can be trained to do heavy work. They can also be trained to do tricks to entert ain people. In other words, they both work for people, and they entertain people also.As I said before, the African and Asian elephants are alike in m any ways, but they are also quite different, too. Let me explain what I mean. The African elephant is larger and heavier than t he Asian elephant. Asian elephants reach a height of about 10 feet, and African elephants reach about 13 feet tall.The African male elephant weighs between 12,000 and 14,000 pounds. In contrast, the average Asian male elephant weighs b etween 7,000 and 12,000 pounds. So one is bigger than the other, but as you can see,both are still enormous animals. Another difference between the 2 kinds of elephants is the siz e of the ears. Asian elephants have smaller ears than African el ephants . The African elephant has 2 very large teeth. These te eth are called tusks. The Asian elephanthowever sometimes does not have any tusks at all. The elepha nts differ in color, too. The African elephant is dark gray in colo r while the Asian elephant is light gray. Occasionally an Asian el ephant is even white ! The last big difference between the 2typesof elephants is their temperament. The Asian elephant is tame r than the African elephant, orin another way, the African elephant is much wilder than the A sian elephant. As a result, it’s more difficult to train the African elephant to perform tricks to entertain people. That’s why the elephants you see in the circus are probably Asian elephants and not African elephants.Yes, there certainly are differences between the African and th e Asian elephants, but as I mention at the start of mytall, there is one big similarity between the 2 animals: they are both fascinating and enormous animals.=================================================== ========Lesson 13 Lincoln and KennedyJohn F. Kennedy and Abraham Lincoln lived in differe nt times and had very different family and educational backgrounds. Kennedy lived in the 20th century; Li ncoln lived in the 19th century. Kennedy was born in 1917, whereas Lincoln was born more than a hundre d years earlier, in 1809. As for their family backgroun ds, Kennedy came from a rich family, but Lincoln’s f amily was not wealthy. Because Kennedy came from a wealthy family, he was able to attend expensive pri vate schools. He graduated from Harvard University. Lincoln, on the other hand, had only one year of for mal schooling. In spite of his lack of formal schooling , he became a well-known lawyer. He taught himself law by reading law books. Lincoln was, in other words, a self-educated man.In spite of these differences in Kennedy and Lincoln ’s backgrounds, some interesting similarities betwe en the 2 men are evident. In fact, books have been written about the strange coincidences in the lives of t hese 2 men. Take forexample ,their political careers. Lincoln began his poli tical career in congress. Similarly, Kennedy also bega n his political career in congress. Lincoln was elected to the U.S. House of Representatives in 1847, and Ke nnedy was elected to the House in 1947. So they were elected to congress exactly 100 yearsapart. Another interesting coincidence is that each m an was elected president of the United States in a ye ar ending with the number 60. Lincoln was elected pr esident in 1860, and Kennedy was elected in 1960; fu rthermore, both men were president during years of civil unrest in the country. Lincoln was president duri ng the American Civil War. At the time Kennedy became president,African-Americans were fighting for their civil rights ,unrest took the form of civil rights demonstrations.。
高级英语视听说文字稿(全1、2册)
Book OneUnit One Focus on: ChronologyChapter 1 Napoleon: Form Schoolboy to EmperorNapoleon was a French soldier who became emperor of France. He was born in 1769 on the island of Corsica. When he was only ten years his father sent him to military school in France. Napoleon was very good student in most of his classes, but he excelled in mathematics and in military science. When he was sixteen years old, he joined French army. In that year he began the military career that brought him fame, power, riches, and, finally, defeat. Napoleon became a general in the French army at the young age of 24. Several years later he beccame emperor of the French Empire.Napoleon was many things. He was, first of all, a brilliant military leader. His soldiers were ready to die for him. As a result, Napoleon won many, many military victories. At one time he controlled most of Europe, but many countries, including England, Russia, and Austria fought fiercely against Napoleon. His defeat--his end--came when he decided to attack Russia. In this military campaign against Russia, he lost most of his army.The great French conqueror died alone--deserted by his family and friends--in 1821. Napoleon was only 51 years old when he died.Listening Factoid 1The cause of Napoleon's death at the age of 51 on the island of St. Helena is still a mystery. There is no doubt that he was a very sick man at the time of his death. One theory about the cause of his death is that he had stomach cancer. Another theory is that he was deliberately poisoned by a servant. A third theory also suggests that he was poisoned, but not by his servant. This third theory suggests that he was poisoned accidentally by fumes from the wallpaper in the house he lived in. A few years ago, samples of the wallpaper were analyzed and traces of arsenic were found in it. Arsenic is a powerful poison that was used in some of the dyes in wallpaper during the time that Napoleon lived. More than 170 years after his death, people are still speculating about the cause of his death.Listening Factoid 21. Ten people who speak make more noise than 10,000 who are silent.2. In politics, stupidity is not a handicap.3. A man will fight harder for his interests than for his rights.4. Men of genius are meteors intended to burn to light their century.5. I know, when it is necessary, how to leave the skin of the lion to take the skin of the fox.6. History is the version of past events that people have decided to agree upon.7. It is success which makes great men.Chapter 2 Pompeii: Destroyed, Forgotten, and FoundToday many people who live in large metropolitan areas such as Paris and New York leave the city in the summer. They go to the mountains or to the seashore to escape the city noise and heat. Over 2,000 years ago, many rich Romans did the same thing. They left the city of Rome inthe summer. Many of these wealthy Romans spent their summers in the city of Pompeii. Pompeii was a beautiful city; it was located on the ocean, on the Bay of NaplesIn the year 79 C. E., a young Roman boy who later became a very famous Roman historian was visiting his uncle in Pompeii. The boy's name was Pliny the Younger. One day Pliny was looking up at the sky. He saw a frightening sight. It was a very large dark cloud. This black cloud rose high into the sky. Rock and ash flew through the air. What Pliny saw was the eruption--the explosion--of the volcano, Vesuvius. The city of Pompeii was at the foot of Mt. Vesuvius.When the volcano first erupted, ~ny.people were able to flee the city and to escape death. In fact, 18,000 people escaped the terrible disaster. Unfortunately, there was not enough time for everyone to escape. More than 2,000 people died. These unlucky people were buried alive under the volcanic ash. The eruption lasted for about three days. When the eruption was over, Pompeii was buried under 20 feet of volcanic rock and ash. The city of Pompeii was buried and forgotten for 1,700 years.In the year 1748 an Italian farmer was digging on his farm. As he was digging, he uncovered a part of a wall of the ancient city of Pompeii. Soon archaeologists began to excavate--to dig--in the area. As time went by, much of the ancient city of Pompeii was uncovered. Today tourists from all over the world come to see the ruins of the famous city of Pompeii.Lance Armstrong was born on September 18, 1971 in a suburb of Dallas, Texas, called Plano. Lance began running and swimming competitively when he was only 10 years old. By the time he was 13, he was competing in triathlons and won the Iron Kids Triathlon. Lance's mother, who raised Lance mostly by herself, recognized and encouraged his competitive spirit.During his senior year in high school, Lance was invited to train with the U.S. Olympic cycling developmental team in Colorado. From that time on, Lance focused completely on cycling. By 1991, Lance was the U.S. National Amateur Champion. He also won two major national races the same year--even beating some professional cyclists.Although he was generally doing very well, Lance had his ups and downs. In 1992 he was expected to do very well at the Barcelona Olympics, but he finished in 14th place. This was a big disappointment. Lance got over the disappointment and decided to turn professional. In his first professional race, the 1992 Classico San Sebastian, he ended up finishing dead last, 27 minutes behind the winner. Lance's mother continued to encourage Lance through his difficult times.Things went much better for Lance in the following years. In 1993 he was the youngest person to win the World Race Championships. In the same year, he entered the Tour de France for the first time. He won one stage of the race, but dropped out of the race before finishing. In 1995, he even won the Classico San Sebastian, the race that he had finished last in, in 1992. Lance also won the most important U.S. tournament, the Tour Du Pont, two times, in both 1995 and 1996. By 1996, Lance was ranked seventh among cyclists in the world, and hesigned a two-year contract with a French racing team. At that time, hewas still a few months away from his 25th birthday; everything was looking very good for Lance Armstrong.However, everything changed dramatically and drastically in October of 1996, shortly after his 25th birthday. At this time, Lance was diagnosed with advanced cancer that had already spread to his brain and lungs. He almost immediately underwent two cancer surgeries. After these two surgeries, he was given a less than 50-50 chance of survival as he began an aggressivethree-month course of chemotherapy. The chemotherapy left Lance very weak, but the treatment worked well. Quite soon after, Lance was declared free of cancer. Lance returned to cycling and training only five months after he was initially diagnosed with cancer. He vowed he would return to competitive cycling betterHowever, his French cycling team dropped Lance from the team.They didn't believe that Lance would ever be able return to his former level of strength and endurance. Fortunately the U.S. Postal Service Team became his new sponsor. With the support of the U.S. Postal Service Team, Lance returned to racing in 1998. After one particularly bad day during one of his races, Lance pulled over and decided he was done with racing. However, after spending time with his really good cycling friends, Lance returned to racing, and again he was off again in pursuit of cycling victories!Lance's big comeback was marked by his victory at the 1999 Tour de France. Lance repeated this feat in the years 2000, 2001, 2002, 2003, and 2004, for a total of six consecutive victories in the Tour de France, the most prestigious and the most grueling of all cycling contests. Lance's Tour de France record may never be beaten or even matched. Interestingly, Lance was the youngest person to win the World Cycling Championships in 1993 and the oldest person ever to win the Tour de France in 2004!In addition to his amazing athletic performance, Lance Armstrong has established the Lance Armstrong Foundation, which is devoted to providing information about cancer and support to cancer victims. He has also written a book about his life and winning the Tour de France, called Every Second Counts, and for Lance, every second has counted.Lance Armstrong gives a lot of credit for his success to his mother, whose independent spirit and support for Lance inspired him to overcome all of life's obstacles, both on and off the racetrack. Lance, in turn, has provided inspiration to many, for his courage--both athletic and personal.Listening ExpansionTask 1 History of the BicycleThe precursor to the bicycle appeared in France in the 1790s. It was a little wooden horse with a fixed front wheel. Because the wheel was fixed, it could not be turned right or left. This little horse did not have any pedals, and the only way it could be maneuvered was by the rider pushing against the ground with his or her feet.In 1817, the German baron Karl von Drais replaced the fixed front wheel with one that could be steered. Now the wooden horse could be directed right or left. The rider still needed to push it with his or her feet on the ground.The next development occurred in 1839. when a Scottish blacksmith, Kirkpatrick MacMillan, designed the first bicycle-like machine with pedals and cranks. MacMillan called his machine a "velocipede" and rode it the 40 miles from his home to Glasgow, Scotland in only_5 hours.In 1866, Pierre Lallement applied for and received a U.S. patent for a machine that he called the "bisicle." Some people called it a "boneshaker" as it had steel-rimmed wooden wheels. The bicycle got more comfortable in 1869 when rubber tires were introduced. Around the same time, the front wheels began to grow larger while the back wheels got smaller, and the first "highwheeler" was introduced in 1872. During the 1880s, bicycles enjoyed a boom--that is, asudden growth in popularity. The highwheelers were very popular, especially among young men, as they could go very fast. However, they weren't very safe. Sitting high up towards the front of the bicycle and traveling very fast, the rider could be easily thrown over the front wheel if the bicycle hit a small bump in the road or if a dog ran in front of the bicycle. This type of accident gave rise to the expression "to do a header" as the rider often fell onto his head.Fortunately, the "safety bicycle" was invented in 1884. The safety bicycle had equal-sized wheels, a chain, and a sprocket-driven rear wheel. The rider was now sitting further back on the bicycle and in much less danger of "doing a header." More improvements quickly followed. Pneumatic tires--that is, tires with air in them—were invented in 1888. Two-and three-speed hub gears came in the 1890s. The last major innovation, the derailteur gear, arrived in 1899. No further significant changes were made until the 1970s. In the 1970s bicycles became more aerodynamic. That is, changes in design and use of lightweight but strong materials allowed bicycles to reduce the amount of air resistance they encountered and thus go faster. No doubt there will be further improvements in design and materials in the future.Task 21. I was born into a royal family and educated by a famous philosopher. I became leader of my country at age 19, when my father was assassinated. I was a great military leader, and at one time I controlled most of the known Western world. I died on June 13, 323 B.C.E. at the age of 32. Who am I? (e)2. I was born in Skopje, Yugoslavia at the time when it was still part of the Ottoman Empire. I left home early to join a religious community. I spent most of my adult life working to help the poor in India. In 1979, I won the Nobel Prize for Peace. I died in 1997. Who am I? (b)3. I grew up near the British royal family's estate. I married into the royal family when I was 18years old and had two sons. I later spent a lot of my time working for charities that tried to help victims of AIDS, domestic abuse, and drug addiction. Millions of people mourned my death in 1997. Who am I? (a)4. I traveled the Silk Road all the way to China in 1271, where I stayed for 17 years. I was afavorite of the ruler Kublai Khan and I traveled in China and Southeast Asia, including India, as his envoy. Later I returned home to Venice and ended up in prison for two years, where I dictated a book about my life and travels. Who am I? (c)5. I was born in Morocco at the beginning of the 14th century. I spent 30 years traveling. I visited every Muslim country in the world. When I finished my travels, I wrote a history of my journeys in Arabic, the title of which translates into Travels in English. I died around the year 1368. (h)6. I was born around the year 1167. I succeeded my father as ruler of a Mongol tribe. I wasruthless and many, many people died in battles with my armies. However, I was a great ruler and brilliant military leader. I ruled one of the greatest land empires the world has even known.Who am I? (d)7. I was born into a royal family. When my father died, I led a revolt against my brother andbecame leader of my country. I was involved romantically and politically with two famous Romans. After being defeated in battle, I committed suicide so that I could not be captured by my enemy Octavian. Who am I? (g}8. I was born in 1940. My real name is Edson Arantes do Nascimento, but everyone knows me bymy famous nickname. I led my football team to many championships. I also led the Brazilian national team to the world championships in 1958, 1962, and 1970. Some people say that I was the greatest football player of all time. Who am I? (f)Listening Factoid 1Amazingly enough, the bicycle is a more efficient means of transportation than any other method of traveling. It takes much less energy to bicycle one mile than it does to walk one mile. In fact, it can take up to five times as much energy to walk a mile than to bicycle a mile. If we compare the amount of energy a human being uses to bicycle three miles, or about 5 kilometers, we find this amount of energy would power a car for only about 278 feet, or 85 meters.Listening Factoid 2According to Professor Steve Jones, the three most important inventions in the history of mankind were (1) fire, (2) speech, and (3) the bicycle. He says that the invention of fire freed human beings from the power of climate, dangerous animals, and monotonous diets. The invention of speech meant that human beings could begin to build civilization. And the invention of the bicycle--by which he really means modern transportation in general--meant that groups of human beings were no longer isolated, but could travel great distances. Being able to travel much more freely meant that there could never again be more than one species of human beings as there had been in ancient times.Unit Two Focus on ProcessChapter 4 The InternetThe Internet consists of millions of computers, all linked together into a gigantic network. Now every computer that is connected to the Internet is part of this network and can communicate with any other connected computer.In order to communicate with each other, these computers are equipped with special communication software. To connect to the Internet, the user instructs the computer's communication software to contact the Internet Service Provider, or ISP. Now an Internet Service Provider, or ISP, is a company that provides Internet service to individuals, organizations, or companies, usually for a monthly charge. Local ISPs connect to larger ISPs, which in turn connect to even larger ISPs. A hierarchy of networks is formed. And this hierarchy is something like a pyramid, with lots of small networks at the bottom, and fewer but larger networks moving up the pyramid. But, amazingly, there is no one single controlling network at the top. Instead, there are dozens of high-level networks, which agree to connect with each other. It is through this process that everyone on the Internet is able to connect with everyone else on the Internet, no matter where he or she is in the world.How does information that leaves one computer travel through all of these networks, and arrive at its destination, another computer, in a fraction of a second?The process depends on routers. Now routers are specialized computers whose job is to direct the information through the networks. The data, or information, in an e-mail message, a Web page, or a file is first broken down into tiny packets. Each of these packets has the address of the sender and of the receiver, and information on how to put the packets back together. Each of these packets is then sent off through the Internet. And when a packet reaches a router, the router readsits destination address. And the router then decides the best route to send the packet on its way to its destination. All the packets might take the same route or they might go different routes. Finally, when all the packets reach their destination, they are put back into the correct order.To help you understand this process, I'm going to ask you to think of these packets of information as electronic postcards. Now imagine that you want to send a friend a book, but you can send it only as postcards. First, you would have to cut up each of the pages of the book to the size of the postcards. Next, you would need to write your address and the address of your friend on each of these postcards. You would also need to number the postcards so that your friend could put them in the correct order after he receives the postcards. After completing these steps, you would put all the postcards in the mail. You would have no way to know how each postcard traveled to reach your friend. Some might go by truck, some by train, some by plane, some by boat. Some might go by all four ways. Now along the way, many postal agents may look at the addresses on the postcards in order to decide the best route to send them off on to reach their destination. The postcards would probably arrive at different times. But finally, after all of the postcards had arrived, your friend would be able to put them back in the correct order and read the book.Now this is the same way that information is sent over the Internet using the network of routers, but of course it happens much, much faster!Listerning ExpamsionTask 1 Connecting the ProcessOnce you decide that you need good antivirus software, the first thing to do is to see whether your computer already has an antivirus program pre-installed. You can do this by going to Programs on your Start menu and looking for an antivirus software program. If you find there is an antivirus program already installed, first check to see if it is activated. Then determine whether it is up to date. Finally, consider whether it's the best software for your needs. If, after completing this process, you decide you need to purchase antivirus software, here are some steps you can follow.First, ask friends and colleagues for their recommendations. After that, go to the Internet to read several reviews of antivirus software programs. You will see that there are some free antivirus software programs available to be downloaded. If one of them suits your needs, then your search may be over. If not, after reading many reviews, select a few software programs to consider purchasing. The next step is to test them, if possible. Many programs' Web sites allow you to download them for a trial period. In the meantime, compare prices of these programs. After completing all these steps, you should be ready to purchase your software. If your computer already has an antivirus software program, be sure to uninstall it before installing your new software. Finally, install your new antivirus softw are, following the manufacturer’s direction, carefully. Keep in mind that antivirus software must be continuously updated to be effective.Task 2A Dictation: How to Be a Courteous E-mail Correspondenta. Check your e-mail regularly.b. Keep your e-mail messages brief.c. Be careful how you express yourself.d. Don't forward somebody else's e-mail without permission.e. Put a clear subject title in the subject box.Listening Factoid 1Jeff Hancock, a scientist at Cornell University, asked 30 students to keep a communication diary for a week. The students wrote down the numbers of conversations they had either face-to-face or on the telephone and the number of e-mail exchanges they had, both regular e-mail and instant messages, that lasted more than 10 minutes. They also wrote down the number of lies they had told in each conversation or e-mail exchange. When Jeff Hancock analyzed the students' communication records, he found that lies made up 14 percent of e-mails, 21 percent of instant messages, 27 percent of face-to-face conversations, and 37 percent of phone calls.His findings surprised some psychologists, who thought it would be easier to lie in e-mails than in real-time conversations. One explanation is that people are less likely to lie wher$ there will be a record of their lies, such as in an e-mail.Listening Factoid 2If you have an e-mail account, you have no doubt been spammed. That is, you have received unsolicited e-mail from someone you don't know, someone who is usually trying to sell you something!Most people say that they hate spam. For many people, spam mail is just a nuisance, but for businesses it's very expensive, as their employees waste considerable working time going through and deleting spam. According to Message Labs, a company that provides e-mail security, 76% of the world's e-mail is spam and it costs businesses approximately $12 billion dollars a year. According to a survey by Commtouch Software, another anti-spam company, in the last few months the number of spam attacks increased by 43%. Their report predicts that within two years, 98% of all e-mail will be spam!Chapter 5What I'd like to talk to you about today is the topic of child language development. I know that you all are trying to develop a second language, but for a moment, let's think about a related topic, and that is: How children develop their first language. What do we know about how babies develop their language and communication ability? Well, we know babies are able to communicate as soon as they are born--even before they learn to speak their first language. At first, they communicate by crying. This crying lets their parents know when they are hungry, or unhappy, or uncomfortable. However, they soon begin the process of acquiring their language. The first stage of language acquisition begins just a few weeks after birth. At this stage, babies start to make cooing noises when they are happy. Then, around four months of age they begin to babble. Babies all over the world begin to babble around the same age, and they all begin to make the same kinds of babbling noises. Now, by the time they are ten months old, however, the babbling of babies from different language backgrounds sounds different. For example, the babbling of a baby in a Chinese-speaking home sounds different from the babbling of a baby in an English-speaking home. Babies begin a new stage of language development when they begin to speak their first words. At first, they invent their own words for things. For example, a baby in an English-speaking home may say "baba" for the word "bottle'' or "kiki" for "cat." In the next fewmonths, babies will acquire a lot of words. These words are usually the names of things that are in the baby's environment, words for food or toys, for example. They will begin to use these words to communicate with others. For example, if a baby holds up an empty juice bottle and then says "juice," to his father, the baby seems to be saying, "I want more juice, Daddy" or "May I have more juice, Daddy?" This word "juice" is really a one-word sentence.Now, the next stage of language acquisition begins around the age of 18 months, when the babies begin to say two-word sentences. They begin to use a kind of grammar to put these words together. The speech they produce is called "telegraphic" speech because the babies omit all but the most essential words. An English-speaking child might say something like "Daddy, up" which actually could mean "Daddy, pick me up, please." Then, between two and three years of age, young children begin to learn more and more grammar. For example, they begin to use the past tense of verbs. In other words, they begin to learn the rule for making the past tense of many verbs. The children begin to say things such as "I walked home" and "I kissed Mommy." They also begin to overgeneralize this new grammar rule and make a lot of grammar mistakes. For example, children often say such things as "I goed to bed" instead of "I went to bed," or "I eated ice cream" instead of "I ate ice cream." In other words, the children have learned the past tense rule for regular verbs such as "walk" and "kiss," but they haven't learned that they cannot use this rule for all verbs. Some verbs like "ear" are irregular, and the past tense forms for irregular verbs must be learned individually. Anyway, these mistakes are normal, and the children will soon learn to use the past tense for regular and irregular verbs correctly. The children then continue to learn other grammatical structures in the same way.If we stop to think about it, actually it's quite amazing how quickly babies and children all over the world learn their language and how similar the process is for babies all over the world. Do you remember anything about how you learned your first language during the early years of your life? Think about the process for a minute. What was your first word? Was it "mama" or maybe "papa"? Now think also about the process of learning English as a second language. Can you remember the first word you learned in English? I doubt that it was "mama." Now, think about some of the similarities and differences involved in the processes of child and adult language learning. We'll talk about some similarities and differences in the first and second language learning processes tomorrow. See you then.Listening Factoid 1Have you ever wondered about what the world's original language was? Or whether children would begin to speak if they never heard language? Well, more than 2,500 years ago, an Egyptian pharaoh asked himself the same questions. He had the idea that children who didn't hear adults speaking any language would begin to speak the world's "original language." So he had two newborn babies of poor parents taken away from them. He gave the babies to a shepherd to take care of. No one was allowed to speak to them. About two years later, the shepherd reported to the pharaoh that the children were making a sound like "bekos." This sound "bekos" sounded like the word for bread in the Phrygian language, so the pharaoh concluded that Phrygian was the original language in the world. There was only one problem with the pharaoh's conclusion. He overlooked the fact that "bekos" sounded very much like the noise that sheep make!Listening Factoid 2Do you know that grownups use baby talk? Why? To help babies learn to speak! David Sacks, a linguist, says that, "babies in their first year of life learn to speak--first in baby talk, then with the rudiments of genuine vocabulary--by imitating the speech sounds they hear around them. (Often these sounds are addressed to the baby in an exaggerated, singsong form; for example, "How did you sleeeep?" which apparently helps the child to learn./But some scholars have theorized that language in the nursery is partly a two-way street and that certain family-related words in English and other tongues were formed originally--perhaps prehistorically--in imitation of baby talk. Such words are easy for babies to pronounce. The parent will say to the baby, "Say dada" and so the word "dada" retains a secure place in the language. What are these words that are easy to say? While the words vary from language to language, in English they are some of the "ba," "da," "ma," and "pa" words.The earliest speech sounds out of an infant's mouth, sometimes as early as the second month of life, might typically be pure vowels. The sounds "ah," "ee," and "oo" are said to predominate among babies all over the world, with "ah" as the earliest and most frequent sound. The infant's next step, usually begun before four months of age, is to float a consonant sound in front of the vowel: "ma-ma-ma," the sound of pure baby talk.Unit Three/Focus on: Classification/DefinitionChapter 7 A Tidal Wave: What Is It? What Causes It? How Can We Predict It?A tidal wave is a very large and very destructive wall of water that rushes in from the ocean toward the shore. Many scientists call these waves tsunami. In Japanese tsunami means "storm wave." But do you know that tidal waves are not caused by storms and that they are not true tides at all? A true tide is the regular rise and fall of ocean waters, at definite times each day, but a tidal wave comes rushing in suddenly and unexpectedly. A tidal wave is caused by an underwater earthquake. Scientists call the underwater earthquake a seaquake. The word "seaquake" is made up of two words, the word "sea" which means "ocean" and the word "quake." "To quake" means "to shake" or "to tremble." When a seaquake takes place at the bottom of the ocean, the ocean floor shakes and trembles, and sometimes the ocean floor shifts. It is this shifting that produces the tidal wave. The tidal wave begins to move across the sea at great speed.Tidal waves have taken many human lives in the past. Today scientists can predict when a tidal wave will hit land. They use a seismograph to do this. A seismograph is an instrument that records the strength, the direction, and the length of time of an earthquake or seaquake. It is not possible to hold back a tidal wave, but it is possible to warn people that a tidal wave is coming. This warning can save many lives.UnitThree/Focus on: Classification/DefinitionChapter 8 Levels of Language Usage: Formal and InformalToday I want to talk about levels of language usage. You probably have noticed that people express similar ideas in different ways, depending on the situation they are in. This is very natural. All languages have two broad, general categories, or levels of usage: a formal level and an informal level. English is no exception. I'm not talking about correct and incorrect English. What I'm talking about are two levels of correct English. The difference in these two levels is the situation in which you use a particular level. Formal language is the kind of language you find in textbooks, reference books such as encyclopedias, and in business letters. For example, a letter to。
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【下载本文档，可以自由复制内容或自由编辑修改内容，更多精彩文章，期待你的好评和关注，我将一如既往为您服务】Chapter 1 N apoleon：From Schoolboy to EmperorNapoleon was a French soldier who became emperor of France. He was born in 1769 on the island of Corsica. When he was only 10 years old, his father sent him to military school in France. N. wasn’t a very good student in most of his classes, but he excelled in mathematics and military science. When he was 16 years old, he joined the French army. In that year he began the military career that brought him fame, power, riches, and, finally, defeat. N. became a general in the French army at the young age of 24. Several years later, he became the emperor of the French Empire.N. was many things. He was, first of all, a brilliant military leader. His soldiers were ready to die for him. As a result, N. won many, many military victories. At one time he controlled most of Europe, but many countries, including England, Russia, and Austria fought fiercely against him. His defeat –his end –came when he decided to attack Russia. In this military campaign against Russia, he lost most of his army.The great French conqueror died alone -- deserted by his family and friends – in 1821. N. was only 51 years old when he died.PostlisteningA. The Comprehension Check1. Recognizing Information and Checking Accuracy1. When was Napoleon born? (a)2. What kind of student was Napoleon in most of his classes? (d)3. What did Napoleon's military career bring him? (d)4. When did Napoleon become emperor of the French Empire? (d)5. One reason that Napoleon won many military victories was that his soldiers were ready to fight to the death for him. (T)6. Austria and Russia fought fiercely against Napoleon, but England did not. (F England also fought against him.)7. Many of Napoleon's family and friends were with him when he died. (F He died alone and deserted by his family and friends.)8. Napoleon died before he reached the age of 52. (T)Chapter 2 Pompeii：Destroyed, Forgotten, and FoundToday many people who live in large metropolitan areas such as Paris and New York leave the city in the summer. They go to the mountains or to the seashore to escape the city noise and heat. Over 2,000 years ago, many rich Romans did the same thing. They left the city of Rome in the summer. Many of these wealthy Romans spent their summers in the city of Pompeii. P. was a beautiful city; it was located on the ocean, on the Bay of Naples.In the year 79 C.E., a young boy who later became a very famous Roman historian was visiting his uncle in P.. The boy’s name was Pliny the Younger. One day Pliny was looking up at the sky. He saw a frightening sight. It was a very large dark cloud. This black cloud rose high into the sky. Rock and ash flew through the air. What Pliny saw was the eruption –the explosion -- of the volcano, Vesuvius. The city of P. was at the foot of Mt. V..When the volcano first erupted, many people were able to flee the city and to escape death. In fact, 18,000 people escaped the terrible disaster. Unfortunately, there was not enough time for everyone to escape. More than 2,000 people died. These unlucky people were buried alive under the volcanic ash. The eruption lasted for about 3 days. When the eruption was over, P. was buried under 20 feet of volcanic rock and ash. The city of P. was buried and forgotten for 1,700 years.In the year of 1748 an Italian farmer was digging on his farm. As he was digging, he uncovered a part of a wall of thePostlisteningA. The Comprehension Check1. Recognizing Information and Checking Accuracy1. At what time of the year did wealthy Romans like to visit Pompeii? (in the summertime)2. In what year did Pliny pay a visit to his uncle/s house in Pompeii? (in 79 C.E.)3. What did Pliny see when he was looking out over the Bay of Naples one day? (a large dark cloud)4. Where was Pompeii located in relation to Mt. Vesuvius? (Pompeii was located at the foot of Mt. Vesuvius.)5. When did an Italian farmer discover a part of an ancient wall of Pompeii? {in 1748)6. Rome was located at the foot of Mt. Vesuvius. (F Pompeii was located at the foot of Mt. Vesuvius.)7. Most of the people of Pompeii were able to flee the city and to escape death. (T)8. Pompeii was buried under two feet of volcanic ash. (F Pompeii was buried under 20 feet of volcanic ash.)9. Pompeii lay buried and forgotten between 79 C.E. and 1748. (T)10. The Italian farmer was looking for the ancient city of Pompeii. (F The farmer was digging on his farm.)11. Tourists come to excavate the city of Pompeii, (F Tourists come to see the ruins of the ancient city of Pompeii.) Chapter 3 Lance Armstrong: Survivor and WinnerLance Armstrong was born on September 18, 1971 in a suburb of Dallas, Texas, called Plano. Lance began running and swimming competitively when he was only 10 years old. By the time he was 13, he was competing in triathlons and won the Iron Kids Triathlon. Lance’s mother, who raised L. mostly by herself, recognized and encouraged his competitive spirit.During his senior year in high school, L. was invited to train with the US Olympic cycling developmental team in Colorado. From that time on, L. focused completely on cycling. By 1991, L. was the US National Amateur Champion. He also won 2 major national races the same year -- even beating some professional cyclists.Although he was generally doing very well, L. had his ups and downs. In 1992, he was expected to do very well at the Barcelona Olympics, but finished in 14th place. This was a big disappointment. L. got over the disappointment and decided to turn professional. In his first professional race, the 1992 Classico San Sebastian, he ended up finishing dead last, 27 minutes behind the winner. L.’s mother continued to encourage L. through his difficult times.Things went much better for L. in the following years. In 1993, he was the youngest person to win the World Race Championships. In the same year, he entered the Tour de France for the first time. He won one stage of the race, but dropped out of the race before finishing. In 1995, he even won the Classico S. S., the race he had finished last in, in 1992. L. also won the most important US tournament, the Tour du Pont, 2 times, in both 1995 and 1996. By 1996, L. was ranked 7th among cyclists in the world, and he signed a 2-year contract with a French racing team. At that time, everything was looking very good for L.A..However, everything changed dramatically and drastically in October of 1996, shortly after his 25th birthday. At this time, L. was diagnosed with advanced cancer that had already spread to his brain and lungs. He almost immediately underwent 2 cancer surgeries. After these 2 surgeries, he was given a 50-50 chance of survival as he began an aggressive 3-month course of chemotherapy. The chemotherapy left L. very weak, but the treatment worked well. Quite soon after, L. was declared free of cancer. L. returned to cycling and training only 5 months after he was initially diagnosed with cancer. He vowed he would return to competitive cycling better than ever.However, his French cycling team dropped L. from the team. They didn’t believe that L. would ever be able to return to his former level of strength and endurance. Fortunately the US Postal Service Team became his new sponsor. With the support of the US Postal Service Team, L. returned to racing in 1998. After one particularly bad day during one of his races, L. pulled over and decided he was done with racing. However, after spending time with his really good cycling friends, L. returned to racing, and again he was off again in pursuit of cycling victories!L.’s big comebac k was marked by his victory at the 1999 Tour de France. L. repeated this feat in the years 2000, 2001,2002, 2003 and 2004, for a total of 6 consecutive victories in the Tour de France, the most prestigious and the most grueling of all cycling contests. L.s’ Tour de France record may never be beaten or even matched. Interestingly, L. was the youngest person to win the World Cycling Championships in 1993 and the oldest person ever to win the Tour de France in 2004!In addition to his amazing athletic performance, L.A. has established the L.A. Foundation, which is devoted to providing information about cancer and support to cancer victims. He has also written a book about his life and winning the TdF, called Every Second Counts, and for L., every second has counted.L.A. gives a lot of credit for his success to his mother, whose independent spirit and support for L. inspired him to overcome all of life’s obstacles, both on and off the racetrack. Lance, in return, has provided inspiration to many, for his courage – both athletic and personal.PostlisteningA. The Comprehension Check1. Recognizing Information and Checking Accuracy1. How old was Lance when he began running and swimming competitively? (b)2. Which sports contest did Lance win when he was 13 years old? (b)3. How old was Lance when he was diagnosed with advanced cancer? (c)4. What chance for survival was Lance given after he underwent two surgeries? (c)5. Who was Lance's sponsor when he won the Tour de France in 1999? (d)6. What is the name of the book that Lance wrote that is mentioned in the lecture? (b)7. Lauce’s cancer had already spread to his lungs and brain before it was diagnoised? (T)8. Lauce’s French team dropped Lauce because they didn’t think he would ever return to his former lev el of strength and endurance. (T)9. Lauce won the Classico San Sebastian two times. (F He lost the first time and won the second time.)10. Lauce is the only cyclist to win the Tour de France five times consecutively. (F Lauce is the only person to win the Tour de France six times consecutively.)Chapter 4 The Internet: How it WorksThe Internet consists of millions of computers, all linked together into a gigantic network. Now every computer that is connected to the Internet is part of this network and can communicate with any other connected computer.In order to communicate with each other, these computers are equipped with special communication software. To connect to the Internet, the user instructs the computer’s communication software to contact the Internet Service Provider, or ISP. Now an Internet Service Provider, or ISP, is a company that provides Internet service to individuals, organizations, or companies, usually for a monthly charge. Local ISPs connect to larger ISPs, which in turn connect to even larger ISPs. A hierarchy of networks is formed. And this hierarchy is something like a pyramid, with lots of small networks at the bottom, and fewer but larger networks moving up the pyramid. But, amazingly, there is no one single controlling network at the top. Instead, there are dozens of high-level networks, which agree to connect with each other. It is through this process that everyone on the Internet is able to connect with everyone else on the Internet, no matter where he or she is in the world.How does information that leaves one computer travel through all of these networks, and arrives at its destination, another computer, in a fraction of a second?The process depends on routers. Now routers are specialized computers whose job is to direct the information through the networks. The data, or information, in an e-mail message, a Web page, or a file is first broken down into tiny packets. Each of these packets has the address of the sender and of the receiver, and information on how to put the packets back together. Each of these packets is then sent off through the Internet. And when a packet reaches a router, the router reads its destination address. And the router then decides the best route to send the packet on its way to its destination. All the packets might take the same route or they might go different routes. Finally, when all the packets reach their destination,they are put back into the correct order.To help you understand this process, I’m going to ask you to think of these pa ckets of information as electronic postcards. Now imagine that you want to send a friend a book, but you can send it only as postcards. First, you would have to cup up each of the pages of the book to the size of the postcards. Next, you would need to write your address and the address of your friend on each of these postcards. You would also need to number the postcards so that your friend could put them in the correct order after he receives the postcards. After completing these steps, you would put all the postcards in the mail. You would have no way to know how each postcard traveled to reach your friend. Some might go by truck , some by train, some by plane, some by boat. Some might go by all 4 ways. Now along the way, many postal agents may look at the addresses on the postcards in order to decide the best route to send them off on to reach their destination. The postcards would probably arrive at different times. But finally, after all of the postcards had arrived, your friend would be able to put them back in the correct order and read the book.Now this is the same way that information is sent over the Internet using the network of routers, but of course it happens much, much faster!PostlisteningA. The Comprehension Check1. Recognizing Information and Checking Accuracy1. What is the Internet? (d)2. What is a router? (c)3. What is carried on every tiny packet of information that travels through the Internet? (d)4. What is a router compared to in the lecture? (b)5. The Internet is controlled by one gigantic ISP. (F There is no one controlling network at the top)6. Routers can send the packets of information in one e-mail massage over many different routes to their destination. (T)7. The lecturer compares the tiny packets of information that travel through the Internet to electronic postcards. (T)Chapter 5 Language: How Children Acquire TheirsWhat I’d lie to talk to you about today is the topic of child language development. I know that you all are trying to develop a second language, but for a moment, let’s think about a related topic, and that is: How children develop their first language. What do we know about how babies develop their language and communication ability? Well, we know babies are able to communicate as soon as they are bor n―even before they learn to speak their first language. At first, they communicate by crying. This crying lets their parents know when they are hungry, or unhappy, or uncomfortable. However, they soon begin the process of acquiring their language. The first state of language acquisition begins just a few weeks after birth. At this stage, babies start to make cooing noises when they are happy. Then, around four months of age they begin to babble. Babies all over the world begin to babble around the same age, and they all begin to make the same kinds of babbling noises. Now, by the time they are ten months old, however, the babbling of babies from different language backgrounds sounds different. For example, the babbling of a baby in a Chinese-speaking home sounds different from the babbling of a baby in an English-speaking home. Babies begin a new stage of language development when they begin to speak their first words. At first, they invent their own words for things. For example, a baby in an English-speakin g home may say “baba” for the word “bottle” or “kiki” for “cat.” In the next few months, babies will acquire a lot of words. These words are usually the names of things that are in the baby’s environment, words for food or toys, for example. They will begi n to use these words to communicate with others. For example, if a baby holds up an empty juice bottle and then says “juice,” to his father, the baby seems to be saying, “I want more juice, Daddy” or “May I have more juice, Daddy?” This word “juice” is rea lly a one-word sentence.Now, the next stage of language acquisition begins around the age of 18 months, when the babies begin to say two-word sentences. They begin to use a kind of grammar to put these words together. The speech they produce is called“telegraphic” speech because the babies omit all but the most essential words. An English-speaking child might say something like “Daddy, up” which actually could mean “Daddy, pick me up, please.” Then, between two and three years of age, young children begin to learn more and more grammar. For example, they begin to use the past tense of verbs. The children begin to say things such as “I walked home” and “I kissed Mommy.” They also begin to overgeneralize this new grammar rule and make a log of grammar mista kes. For example, children often say such thins as “I goed to bed” instead of “I went to bed,” or “I eated ice cream” instead of “I ate ice cream.” In other words, the children have learned the past tens e rule for regular verbs such as “walk” and “kiss,” but they haven’t learned that they cannot use this rule for all verbs. Some verbs like “eat” are irregular, and the past tense forms for irregular verbs must be learned individually. Anyway, these mistakes are normal, and the children will soon learn to use the past tense for regular and irregular verbs correctly. The children then continue to learn other grammatical structures in the same way.If we stop to think about it, actually it’s quite amazing how quickly babies and children all over the world learn their language and how similar the process is for babies all over the world.Do you remember anything about how you learned your first language during the early years of your life? Think about the process for a minute. What was your first word? Was it “mama” or maybe “papa”? Now think also about the process of learning English as a second language. Can you remember the first word you learned in English? I doubt that it was “mama.” Now, think about some of the similarities and differences involved in the p rocesses of child and adult language learning. We’ll talk about some similarities and differences in the first and second language learning processes tomorrow. See you then.PostlisteningA. The Comprehension Check1. Recognizing Information and Checking Accuracy1. At what age do babies begin to communicate? (a)2. Which of the following is an example of “telegraphic” speech? (b)3. At what age do children begin to use the past tense? (c)4. At four months of age the babbling of babies sounds the same all over the world. (T)5. A baby’s first words are usually words that he or she inverts. (T)6. A child uses only vocabulary and no grammar before about two years of age. (F He/she actually used a kind of grammar in making two-word sentences at about 18months of age.)7. Children probably say “I goed” instead of “I went” because they hear their parents say this. (F Children say “I goed” instead of “I went” because they are overgeneralizing the grammar rule for the regular past tense verbs to the irregular ver b “go.”)Chapter 7 A Tidal Wave: What Is It? What Causes It? How Can We Predict It?A tidal wave is a very large and very destructive wall of water that rushes in from the ocean toward the shore. Many scientists call these waves tsunami. In Japanese tsunami means “storm wave.” But do you know that tidal waves are not caused by storms and that they are not true tides at all? A true tide is the regular rise and fall of ocean waters, at definite times each day, but a tidal wave comes rushing in suddenly and unexpectedly. A tidal wave is caused by an underwater earthquake. Scientists call the underwater earthquake a seaquake. The word “seaquake” is made up of two words, the word “sea” which means “ocean” and the word “quake.” “To quake” means “to shake” or“to tremble.” When a seaquake takes place at the bottom of the ocean, the ocean floor shakes and trembles, and sometimes the ocean floor shift s. It is this shifting that produces the tidal wave. The tidal wave begins to move across the sea at great speed.Tidal waves have taken many human lives in the past. Today scientists can predict when a tidal wave will hit land. They use a seismograph to do this. A seismograph is an instrument that records the strength, the direction, and the length of time of an earthquake or seaquake. It is not possible to hold back a tidal wave, but it is possible to warn people that a tidalwave is coming. This warning can save many lives.PostlisteningA. The Comprehension Check1. Recognizing Information and Checking Accuracy2. They can predict when a tidal wave will hit land. (c)3. It is caused by a seaquake. (d)4. It is a synonym for "underwater earthquake." (b)5. During a seaquake, it shakes, trembles, and sometimes shifts. (e)6. It records the strength, the direction, and the length of time of earthquakes. (f)Chapter 8 Levels of Language Usage: Formal and InformalToday I want to talk about levels of language usage. You probably have noticed that people express similar ideas in different ways, depending on the situation they are in. This is very natural. All languages have two broad, general categories, or levels of usage: a formal level and an informal level. English in no exception. I’m not talking about correct and incorrec t English. What I’m talking about are two levels of correct English. The difference in these two levels is the situation in which you use a particular level. Formal language is the kind of language you find in textbooks, reference books such as encyclopedias, and in business letters. For example, a letter to a university would be in a formal style. You would also use formal English in compositions and essays that you write in school. People usually use formal English when they give classroom lectures or speeches and at ceremonies such as graduations. We also tend to use formal language in conversations with persons we don’t know well or with people we have a formal relationship with, such as professors, bosses, doctors, friends of our parents’, strangers, etc. Informal language is used in co nversation with colleagues, family, and friends, and when we write personal notes or letters to close friends, as well as in diaries, etc.Formal language is different from informal language in several ways. However, today I’m going to talk only abou t a couple of ways. First of all, formal language tends to be more polite. Interestingly, it usually takes more words to be polite. For example, I might say to a friend or family member, “Close the door, please,” but to a stranger or someone in authority I probably would say “Would you mind closing the door?” or “Excuse me, could you please close the door?” Using words like “could”and “would” makes my request sound more polite, but also more formal. I want to be polite but not too formal with my friends and family.Another difference between formal and informal language is some of the vocabulary. There are some words and phrases that belong in formal language and others that are informal. Let me give you a couple of examples of what I mean. Let’s say that I really like soccer. If I’m talking to my friend or colleague I might say “I’m just crazy about soccer!” But if I were talking to my supervisor or a friend of my parents’, I would probably say “ I really enjoy soccer” or “I like soccer ver y much.” Let’s say I’m telling someone some news I heard about the police arresting a criminal. To my friend I might say, “The cops bagged the crook.” To my parents’ friend I might say “The police arrested the thief.”Although the line between formal and informal language is not always clear and although people are probably less formal today than in the past, it is useful to be aware that these two levels, or categories, do exist. The best way for a nonnative speaker of English to learn the difference is to observe the different ways English speakers speak or write in different situations. Television newscasters, your college professors in your class, your doctors in their offices, etc., will usually speak rather formally. However, your classmates, teammates, family members, and friends will generally speak in an informal fashion. The difference can be learned over time by observing and interacting with native speakers.PostlisteningA. Comprehension check1. Recognizing information and checking accuracy1. Which of the following are usually written in formal English? (b)2. Which of the following people do we usually speak to in informal language? (d)3. Which of the following is the most formal way to make a request? (d)4. Which of the following should not be in a composition you write in school? (b)5. It's unusual to find both a formal and informal level of usage in a language. (F All languages have two broad, general categories, or levels of usage: formal and informal.)6. People usually use formal language when they first meet someone. (T)7. The sentence "Mary is crazy about that music" would be acceptable in a conversation between classmates. (T)8. The best way to learn the difference between formal and informal English is to look up every new word in the dictionary.(F The best way is to pay attention to how native speakers use language in different situations and to interact with them.) Chapter9 Power: The Kinds People Use and AbuseJohn Mack, who is the author of a book about power, says that the need for a sense of personal power is one of the primary forces in human life. On the other hand, he also says that a feeling of powerlessness is one of the most disturbing of human emotions ―a feeling to be avoided at all costs. Just what is power?Psychologists define power as the ability to determine or to change the actions or behavior of other people. Psychologists are trying to identify different kinds of power so that they can better understand how people use these different kinds of power to gain control over other people. They are trying to understand how people manipulate other people for good and evil purposes. Psychologists have identified five basic types of power, and I’d like to talk about each o f these briefly in the next few minutes.The first type of power is called information power. Some psychologist believe that information power is one of the most effective types of power and control. The person who has information that other people want and need, but do not have, is in a position of power. Why is this? Well, most people like to receive and have information. Having information increases a person’s own sense of power. People who provide information can manipulate those who do not have information. Often, when people receive information, they do not know that they are being manipulated by those who provided the information. The psychologist named Edwards says, for example, that newspapers provide a lot of information to their readers, and that these newspaper readers generally believe the information they read. Readers do not question the accuracy of the reports about world events they read in the newspapers.A second type of power is called referent power. For example, a person may want to behave like the members of a particular group, such as a soccer team ( or a group of classmates), or a person may identify with and want to be like a certain teacher, a friend, or say , a rock star. If you identify with another person, that person has power over you, and that person can influence your actions and behavior. Many people imitate and are controlled by the people they identify with. Let me give you a sad example of the use of this type of power for evil purposes. In the 1970s in Jonestown, Guyana, more than 900 people committed suicide when their religious leader Jim Jones told them to kill themselves. They did what he told them to do because he had referent power over them. They identified with him; they believe him, and they did what he told them to do. More recently a man named David Koresh controlled the lives and destinies of a small community of men, women, and children in Waco, Texas. Most people in his community died in a fire, along with their leader, during a confrontation with U.S. government agents.A third kind of power is classified as legitimate power. Government officials, according to Edwards, have a lot of legitimate power. When the government decides to raise taxes or make people go to war, most people will do what their government officials tell them to do. One psychologist reported on an experiment that showed an example of this type of power. In this experiment, a researcher asked people on the street to move away from a bus stop. When he was dressed as a civilian, few people moved away from the bus stop. When the researcher was dressed as a guard, most people moved away from the bus stop. The guard’s uniform seemed to give the researcher a look of legitimate power.A fourth kind of power is called expert power. An expert is a person who is very skilled in some area, such as sports, or。
视听说听力原文lesson1-13
Lesson 1 NapoleonToday, I’m going to talk to you about one of the most important historical figures in European history: Napoleon Bonaparte. Let ’s start by talking about his early life. Napoleon was born in 1769 on the island of Corsica. When he was only 10 years old, his father sent him to military school in France. Napoleon was not a very good student in most of his classes, but he excelled in mathematics and military science. When he was 16 years old,he joined the French army. In that year 1785,he began the military career that would bring himfame ,power,riches and finally defeat. Napoleon became a general in the French army at the young age of 24. Napoleon had many victories on the battlefield but he also became involved in French law and politics. And in 1804, at the age of 35,he became the first emperor of the France.Napoleon was many things. He was, first of all, a brilliant military leader. His soldiers were ready to die for him. As a result, N.won many military victories. At one time he controlled most of Europe, but some countries, including England, Russia, and Austria fought fiercely against him. His defeat —“his end”came when he decided to attack Russia. In this military campaign against Russia, he lost most of his army.The great French conqueror died alone – deserted by his family and friends in 1821. Napoleon was only 51 years old when he died.=========================================================== Lesson 2 PompeiiThe lecture for this class is about the city of Pompeii. A natural disaster occurred there almost 2000 years ago.Today many rich people who live in large metropolitan areas such as Beijing, Paris and New York leave the city in the summer. They go to the mountains or to the seashore to escape the city noise and heat.2,000 years ago, wealthy Romans did the same thing.They left the city of Rome in the summer. Many of these wealthy Romans spent their summers in the city of Pompeii, a beautiful city, located on the Bay of Naples.In the summer of the year 79 C.E., a young Roman boy who later became a very famous Roman historian was visiting his uncle in P.. The boy’s name was Pliny the Younger. One day Pliny was looking up at the sky. He saw a frightening sight. It was a very large dark cloud. This black cloud rose high into the sky. What Pliny saw was the eruption of the volcano called Mount Vesuvius.Rock and ash flew through the air. The city of P . was at the foot of Mt. V.. When the volcano first erupted, many people were able to get out of the city and to escape death. In fact, 18,000 people escaped the terrible disaster. Unfortunately, there was not enough time for everyone to escape. More than 2,000 people died. These unluckypeople were buried alive under the volcanic ash.The eruption lasted for about 3 days. When the eruption was over, P . was buried under 20 feet of volcanic rock and ash. The city of P . was forgotten for almost 1,700 years.In the year of 1748 an Italian farmer was digging on his farm. As he was digging, he uncovered a part of a wall of the ancient city of P.. Soon archaeologists began to dig in the area. As time went by, much of the ancient city of P. was uncovered. Today tourists come from all over the world to see the ruins of the famous city of Pompeii.===========================================================Lesson 4 Roller CoasterLet's talk about the physics involved in a ride on a roller coaster. I'm sure many of you have taken a ride on a roller coaster. A simple roller coaster consists of a frame with a track on it. The track is very much like a train track, this track goes over a series of hills and around curves. It follows a path that ends at the same place it started. A train of cars travels around on this track, very fast. The cars have two sets of wheels. One set of wheels rolls on top of the track, and the others set of wheels rolls below the track. The wheels below the track keep the fast moving cars from coming off the track, roller coaster cars as you probably know don't have any motors or engines. Instead, a chain pulls the cars up the first, tallest and steepy staff hill, this is how the ridebegins. Then, at the top of the hill the chain comes off the cars and gravity takes over. gravity pushes the cars down the other side of the hill. the taller and steeper the first hill is, the faster the ride will be. And the farther the cars will travel. as the cars rolled downhill they gained speed. the cars have enough speed and energy to send them up the next hill. as the cars near the top of the second hill they begin to slow down. but then, the cars reached the top of that hill, and start down the other side. gravity again pushes them toward the ground. this process repeats on each hale. Okay, so let's go over this process again. first, the cars are pulled by a chain up the first highest hill. then they go down a very steep slope, at this point, there is enough energy to pull the cars up and over the next hill. when they reached the bottom of that hill, there is enough energy to climb the next hill, the roller coaster cars lose energy as the ride continues. so, the hills have to be smaller toward the end of the track, finally we roll to a stop on ground level right where we began.======================================================== Lesson 5 Language: How Children Acquire TheirsWhat I’d lie to talk to you about today is the topic of child language development. I know that you all are trying to develop a second language, but for a moment, let’s think about a related topic, and that is: How children develop their first language.What do we know about how babies develop their language and communication ability? Well, we know babies are able to communicate as soon as they are born,even before they learn to speak their first language. At first, they communicate by crying. This crying lets their parents know when they are hungry, or unhappy, or uncomfortable. However, they soon begin the process of acquiring their language. The first state of language acquisition begins just a few weeks after birth. At this stage, babies start to make cooing noises when they are happy. Then, around four months of age they begin to babble. Babies all over the world begin to babble around the same age, and they all begin to make the same kinds of babbling noises. Now, by the time they are ten months old, however, the babbling of babies from different language backgrounds sounds different. For example, the babbling of a baby in a Chinese-speaking home sounds different from the babbling of a baby in an English-speaking home. Babies begin a new stage of language development when they begin to speak their first words. At first, they invent their own words for things. For example, a baby in an English-speaking home may say ―baba‖for the word ―bottle‖or ―kiki‖for ―cat.‖In the next few months, babies will acquire a lot of words. These words are usually the names of things that are in the baby’s environment, words for food or toys, for example. They will begin to use these words to communicate with others. For example, if a baby holds up an empty juice bottle and then says ―juice,‖to his father, the baby seems to be saying, ―I want more juice, Daddy‖or ―May I have more juice, Daddy?‖This word ―juice‖is really a one-word sentence.Now, the next stage of language acquisition begins around the age of 18 months, when the babies begin to say two-word sentences. They begin to use a kind of grammar to put these words together. The speech they produce is called ―telegraphic‖speech because the babies omit all but the most essential words. An English-speaking child might say something like ―Daddy, up‖which actually could mean ―Daddy, pick me up, please.‖Then, between two and three years of age, young children begin to learn more and more grammar. For example, they begin to use the past tense of verbs. The children begin to say things such as ―I walked home‖and ―I kissed Mommy.‖They also begin to overgeneralize this new grammar rule and make a log of grammar mistakes. For example, children often say such thins as ―I goed to bed‖instead of ―I went to bed,‖or ―I eated ice cream‖instead of ―I ate ice cream.‖In other words, the children have learned the past tense rule for regular verbs such as ―walk‖and ―kiss,‖but they haven’t learned that they cannot use this rule for all verbs. Some verbs like ―eat‖are irregular, and the past tense forms for irregular verbs must be learned individually. Anyway, these mistakes are normal, and the children will soon learn to use the past tense for regular and irregular verbscorrectly. The children then continue to learn other grammatical structures in the same way.If we stop to think about it, actually it’s quite amazing how quickly babies and children all over the world learn their language and how similar the process is for babies all over the world.Do you remember anything about how you learned your first language during the early years of your life? Think about the process for a minute. What was your first word? Was it ―mama‖or maybe ―papa‖? Now think also about the process of learning English as a second language. Can you remember the first word you learned in English? I doubt that it was ―mama.‖Now, think about some of the similarities and differences involved in the processes of child and adult language learning. We’ll talk about some similarities and differences in the first and second language learning processes tomorrow. See you then.===========================================================Lesson 7 RobotsWhen people think about a robot,they often picture a machine that look s something like a human being.However,that’s not always the case.Mo st robots do not look much like a human being at all,they look like machi nes because that’s what most of them are-industrial machines. Today,I’m going to talk mostly about industrial robots used in industry. These are robots that do work that for humans would be physically demanding,repetitive,dangerous or very boring.Most industrial robots work on in an assembly line in a factory.For example,a robot might put liz on j ars of fruits or start boxesfor shaping.In a car factory,robotic arms on an assembly line join the parts of a car together;other robots tighten the b oats on the car’s wheelsor paint the car.There are thousands of robots p utting cars together in___plan.These robots are very precise when repe ating a task.For example,they always tighten boats with the same exact amount of force.They always move a heavy engine to exactly where it sh ould be and they always put ahold in the exact same place in every car d oor hour after hour.These are examples of robots doing the work human s could do but the robots are doing the work more efficiently and precise ly.So,just how do robots work?To do its job a robot first needs a control s ystem.This control system directs the robots mechanical parts.The contr ol system of a robot is sort of speak--a robot brain.So how does a robot learn which action to do first and whi ch of its moving part needs to do that action?A robot learns its job with the help and guidance of a human being.To teach an industrial robot to do something,first a person must use a hand-held computer.The computer is used to guide the robot’s arm and hand through the motions it needs to do.Then,the robot stores exact movem ent in its computer memory.The robot has sensors to gather information,so now the robot will use its sensors to direct its actions.The robot tells its moving part what to do and then it performs the action.For example, to pick up and move a box,the robot first finds the box,next it decides t he weight of the box.Then it decides how much force is needed to lift an d move the box,and finally,it finds the correct place to put the box dow n.It repeats the process over and over until it's turned off.It does the sa me job until it is given the job and new program to follow.Some scientist s think that robots of the future will be smarter than today's robots.They may also look more human like or even animal like.In fact,they may wo rk and think more like humans do.The industrial robots we've been talki ng about so far today are automatic robots.They are known as automatic robots because they have program to follo w a specific series of ually,they have parts that move but t hey really don't travel around.On the other hand,an autonomous machi ne can change itsbehavior in relation to its surroundings.For example,an autonomous robot with wheelsor legs to move around can change direc tion when it senses that there are something in its way.A robot such as …can detect the movement of people nearby.It can move to avoid bump ing into ing toward it.Asthma can even learn to dance by followi ng the movements of a dancer next to it.I don't know whether or when people would welcome autonomousmachines or human like robots.I gu ess that we will not only think about that in the future.We need to thinkabout how we will interact with our global doctor:robal teacher,robal p et,or even our robal friend.===========================================================Lesson 8 A Tidal WaveA tidal wave is a very large and very destructive wall of water that rushes in from the ocean towards the shore. Many scientists call these waves tsunami. In Japanese tsunami means “storm wave.” But do you know that tidal are not caused by storms and that they are not true tidal at all? A true tidal is the regular rise a waves and fall of ocean waters, at definite times each day, but a tidal wave comes rushing in suddenly and unexpectedly. A tidal wave is caused by an underwater earthquake. The word “seaquake” is made up of two words, the word “sea” which means “ocean” and the word “quake”. “To quake” means “to shake” or “to tremble.” When a seaquake takes place at the bottom of the ocean, the ocean floor shakes and trembles, and sometimes the ocean floor shifts. It is this shaking that produces the tidal wave. The tidal wave begins to move across the sea at great speed.Tidal waves have taken many human lives in the past. Today scientists can predict when a tidal wave will hit land. They use a seismograph to do this.A seismograph is an instrument that records the strength, the direction, and the length of time of an earthquake or seaquake. It is not possible to hold back a tidal wave, but it is possible to warn people that a tidal waveis coming. This warning can save many lives.===========================================================Lesson 9 Levels of LanguageToday I want to talk about levels of language usage. You probably have noticed that people express similar ideas in different ways, depending on the situation they are in. This is very natural. All languages have two general, broad categories, or levels of usage: a formal level and an informal level. English is no exception. I’m not talking about correct and incorrect English. What I’m talking about are two levels of correct English. The difference in these two levels is the situation in which you use a particular level. Formal language is the kind of language you find in textbooks, reference books such as encyclopedias, and in business letters. For example, a letter to a university would be in formal style. You would also use formal English in compositions and essays that you write in school. People usually use formal English when they give classroom lectures or speeches and at ceremonies such as graduations. We also tend to use formal language in conversations with persons we don’t know well or with people we have a formal relationship with, such as professors, bosses, doctors, friends of our parents’, strangers, etc. Informal language is used in conversations with colleagues, family and friends, and when we write personal notes or letters to close friends, as well as in diaries, etc. Formal language is different from informal language in several ways.However, today I’m going to talk only about a couple of ways. First of all, formal language tends to be more polite. Interestingly, it usually takes more words to be polite. For example, I might say to a friend or family member, "Close the door, please", but to a stranger or someone in authority I probably would say "Would you mind closing the door" or "Excuse me, could you please close the door" Using words like "could" and "would" makes my request sound more polite, but also more formal. Another difference between formal and informal language is some of the vocabulary. There are some words and phrases that belong in formal language and others that are informal. Let me give you a couple of examples of what I mean. Let’s say "I’m just crazy about soccer!" But if I were talking to my supervisor or a friend of my parents’, I would probably say "I really enjoy soccer" or "I like soccer very much". Let’s say I’m telling someone some news I heard about the police arresting a criminal. To my friend I might say "The cops bagged the crook". To my parents’ friend I might say "The police arrested the thief".Although the line between formal and informal language is not always clear and although people are probably less formal today than in the past, it is useful to be aware that these two levels, or categories, do exist. The best way for a non-native speaker of English to learn the difference is to observe the different ways English speakers speak or write in different situations. Television newscasters, your college professors in class, yourdoctors in their offices, etc, will usually speak rather formally. However, your classmates, teammates, family members, friends, etc. will generally speak in an informal fashion. The difference can be learned over time by observing and interacting with native speakers.=========================================================== Lesson 10 Power: The Kinds People Use and Abuse John Mack, who is the author of a book about power, says that the need for a sense of personal power is one of the primary forces in human life. On the other hand, he also says that a feeling of powerlessness is one of the most disturbing of human emotions ―a feeling to be avoided at all costs. Just what is power?Psychologists define power as the ability to determine or to change the actions or behavior of other people. Psychologists are trying to identify different kinds of power so that they can better understand how people use these different kinds of power to gain control over other people. They are trying to understand how people manipulate other people for good and evil purposes. Psychologists have identified five basic types of power, and I’d like to talk about each of these briefly in the next few minutes. The first type of power is called information power. Some psychologist believe that information power is one of the mosteffective types of power and control. The person who has information that other people want and need, but do not have, is in a position of power. Why is this? Well, most people like to receive and have information. Having information increases a person’s own sense of power. People who provide information can manipulate those who do not have information. Often, when people receive information, they do not know that they are being manipulated by those who provided the information. The psychologist named Edwards says, for example, that newspapers provide a lot of information to their readers, and that these newspaper readers generally believe the information they read. Readers do not question the accuracy of the reports about world events they read in the newspapers.A second type of power is called referent power. For example, a person may want to behave like the members of a particular group, such as a soccer team ( or a group of classmates), or a person may identify with and want to be like a certain teacher, a friend, or say , a rock star. If you identify with another person, that person has power over you, and that person can influence your actions and behavior. Many people imitate and are controlled by the people they identify with. Let me give you a sad example of the use of this type of power for evil purposes. In the 1970s inJonestown, Guyana, more than 900 people committed suicide when their religious leader Jim Jones told them to kill themselves. They did what he told them to do because he had referent power over them. They identified with him; they believe him, and they did what he told them to do. More recently a man named David Koresh controlled the lives and destinies of a small community of men, women, and children in Waco, Texas. Most people in his community died in a fire, along with their leader, during a confrontation with U.S. government agents.A third kind of power is classified as legitimate power. Government officials, according to Edwards, have a lot of legitimate power. When the government decides to raise taxes or make people go to war, most people will do what their government officials tell them to do. One psychologist reported on an experiment that showed an example of this type of power. In this experiment, a researcher asked people on the street to move away from a bus stop. When he was dressed as a civilian, few people moved away from the bus stop. When the researcher was dressed as a guard, most people moved away from the bus stop. The guard’s uniform seemed to give the researcher a look of legitimate power.A fourth kind of power is called expert power. An expert is a person who is very skilled in some area, such as sports, or who knows a lot about something, such as computers. Most people are impressed by the skills or knowledge of an expert. Some of these “experts” use their skills at playing sports or knowing about computers to gain power and influ ence ―and to gain money or admiration, according to Edwards. In other words, they use their expertise to gain power.Finally, reward or coercive power is used by people who have the power to reward or punish another person’s actions or behavior. Giving a r eward will change people’s behavior because it offers people a chance for gain. Giving a punishment may or may not cause the people to do what the powerful person wants them to do, but the changes may not last for a long time. The person who uses coercive power may also have to carefully watch thatthe less powerful person does, in fact, change his or her actions or behavior.To sum up, then, power may be gained in many ways. It may come from having information that other people want or need; it may come from being a referent for other people to identify with or to imitate; it may come from having an official, or legitimate, position of authority; it may come from having skills or expertise;or it may come from having the power to reward or punish people. We all exercise one or more of these various kinds of power over other people, and other people will try to exercise one or more of these kinds of power over us throughout our lives.================================================== Lesson11 Asian and African Elephants:Similarities and Diff erencesThe African and the Asian elephants are the largest land animals in the w orld.They are really enormous animals.The African and the Asian elepha nts are alike,or similar,in many ways,but there are differences between the2types of elephants,too.What are some of the similarities between the African and the Asian ele phant?Well,for one thing,both animals have long noses,called trunks. An elephant sometimes uses its trunk like a third hand.Both kinds of ele phants use their trunks to pick up very small objects and very large,heav y objects.They can even pick up trees with their trunks.For another thin g,both the African and the Asian elephants have very large ears,althoug h the African elephant’s ears are considerably larger.In addition,both animals are intelligent.They can be trained to do heavy work.They can also be trained to do tricks to entertain people.In other words,they both work for people,and they entertain people also.As I said before,the African and Asian elephants are alike in many ways,but they are also quite different,too.Let me explain what I mean.The Af rican elephant is larger and heavier than the Asian n eleph ants reach a height of about 10 feet, and African elephants reach about 13 feet tall.The African male elephant weighs between12,000and14,000pounds.I n contrast,the average Asian male elephant weighs between7,000and1 2,000pounds.So one is bigger than the other, but as you can see,both are still enormous animals.Another difference between the2kinds of elephants is the size of the ea n elephants have smaller ears than African elephants.The Africa n elephant has2very large teeth.These teeth are called tusks.The Asian elephanthowever sometimes does not have any tusks at all.The elephants differ i n color,too.The African elephant is dark gray in color while the Asian ele phant is light gray.Occasionally an Asian elephant is even white!The last big difference between the2 typesof elephants is their temperament.The Asian elephant is tamer than the African elephant, orin another way,the African elephant is much wilder than the Asian eleph ant.As a result,it’s more difficult to train the African elephant to perfor m tricks to entertain people.That’s why the elephants you see in the circ us are probably Asian elephants and not African elephants.Yes,there certainly are differences between the African and the Asian el ephants,but as I mention at the start of mytall,there is one big similarity between the2animals:they are both fasci nating and enormous animals.===========================================================Lesson 13 Lincoln and KennedyJohn F. Kennedy and Abraham Lincoln lived in different times and had very different family and educational backgrounds. K ennedy lived in the 20th century; Lincoln lived in the 19th cen tury. Kennedy was born in 1917, whereas Lincoln was born m ore than a hundred years earlier, in 1809. As for their family b ackgrounds, Kennedy came from a rich family, but Lincoln’s f amily was not wealthy. Because Kennedy came from a wealthy family, he was able to attend expensive private schools. He gr aduated from Harvard University. Lincoln, on the other hand, had only one year of formal schooling. In spite of his lack of f ormal schooling, he became a well-known lawyer. He taught himself law by reading law books. Li ncoln was, in other words, a self-educated man.In spite of these differences in Kennedy and Lincoln’s backgr ounds, some interesting similarities between the 2 men are ev ident. In fact, books have been written about the strange coincidences in the lives of these 2 men. Take forexample ,their political careers. Lincoln began his political car eer in congress. Similarly, Kennedy also began his political car eer in congress. Lincoln was elected to the U.S. House of Repr esentatives in 1847, and Kennedy was elected to the House in 1947. So they were elected to congress exactly 100 years apart. Another interesting coincidence is that each man was e lected president of the United States in a year ending with the number 60. Lincoln was elected president in 1860, and Kenne dy was elected in 1960; furthermore, both men were presiden t during years of civil unrest in the country. Lincoln was presid ent during the American Civil War. At the time Kennedy became president,African-Americans were fighting for their civil rights ,unrest took the form of civil rights demonstrations.Times change and it’s just over 15 more years,the United States elected its first African-American president Barack Obama. President Obama was elected in 2008 and…,but let me get back to talk about Lincoln and Kennedy.Another striking similarity between these 2 men was that, as y ou probably know, neither president lived to complete his ter m in office. Lincoln and Kennedy were both assassinated whil。
视听说听力原文lesson1-13
Lesson 1 NapoleonToday, I ' m going to talk to you about one of the most important historical figures in European history: Napoleon Bonaparte. Let by talking about his early life. Napoleon was born in 1769 on the island of Corsica. When he was only 10 years old, his father sent him to military school in France. Napoleon was not a very good student in most of his classes, but he excelled in mathematics and military science. When he was 16 years old,he joined the French army. In that year 1785,he began the military career that would bring him fame ,power,riches and finally defeat. Napoleon became a general in the French army at the young age of 24. Napoleon had many victories on the battlefield but he also became involved in French law and politics. And in 1804, at the age of 35,he became the first emperor of the France.Napoleon was many things. He was, first of all, a brilliant military leader. His soldiers were ready to die for him. As a result, N.won many military victories. At one time he controlled most of Europe, but some countries, including England, Russia, and Austria fought fiercely against him. His defeat —“ his end ” came when he decided to attack Russia. In this military campaign against Russia, he lost most of his army.The great French conqueror died alone -deserted by his family and friends in 1821. Napole on was only 51 years old whe n he died.Less on 2 PompeiiThe lecture for this class is about the city of Pompeii. A n atural disaster occurred there almost 2000 years ago.Today many rich people who live in large metropolitan areas such asBeiji ng, Paris and New York leave the city in the summer. They go to the mountains or to the seashore to escape the city no ise and heat.2,000 years ago, wealthy Roma ns did the same thin g.They left the city of Rome in the summer. Many of these wealthy Roma ns spe nt their summers in the city of Pompeii, a beautiful city, located on the Bay of Naples.In the summer of the year 79 C.E., a young Roma n boy who later became a very famous Roman historian was visiting his uncle in P.. The boy n ame was Pli ny the Youn ger. One day Pli ny was look ing up at the sky.He saw a frighte ning sight. It was a very large dark cloud. This black cloud rose high into the sky. What Pliny saw was the eruption of the volca no called Mount Vesuvius.Rock and ash flew through the air. The city of P . was at the foot of Mt. V.. When the volcano first erupted, manypeople were able to get out of the city and to escape death. In fact, 18,000 people escaped the terrible disaster. Unfortun ately, there was not eno ugh time for every one to escape. More tha n 2,000 people died. These uni ucky people were buried alive under the volcanic ash.The eruption lasted for about 3 days. When the eruption was over, P . was buried under 20 feet of volca nic rock and ash. The city of P . was forgotte n for almost 1,700 years. In the year of 1748 an Italian farmer was digging on his farm. As he was digg ing, he un covered a part of a wall of the an cie nt city of P.. Soon archaeologists bega n to dig in the area. As time went by, much of the ancient city of P. was uncovered. Today tourists come from all over the world to see the ruins of the famous city of Pompeii.Lesson 4 Roller CoasterLet's talk about the physics involved in a ride on a roller coaster. I'm sure many of you have take n a ride on a roller coaster. A simple roller coaster con sists of a frame with a track on it. The track is very much like a train track, this track goes over a series of hills and around curves. It follows a path that ends at the same place it started. A train of carstravels around on this track, very fast. The cars have two sets of wheels. One set of wheels rolls on top of the track, and the others set of wheels rolls below the track. The wheels below the track keep the fast moving cars from coming off the track, roller coaster cars as you probably know don't have any motors or engines. Instead, a chain pulls the cars up the first, tallest and steepy staff hill, this is how the ride begins. Then, at the top of the hill the chain comes off the cars and gravity takes over. gravity pushes the cars down the other side of the hill. the taller and steeper the first hill is, the faster the ride will be. And the farther the cars will travel. as the cars rolled downhill they gained speed. the cars have enough speed and energy to send them up the next hill. as the cars near the top of the second hill they begin to slow down. but then, the cars reached the top of that hill, and start down the other side. gravity again pushes them toward the ground. this process repeats on each hale. Okay, so let's go over this process again. first, the cars are pulled by a chain up the first highest hill. then they go down a very steep slope, at this point, there is enough energy to pull the cars up and over the next hill. when they reached the bottom of that hill, there is enough energy to climb the next hill, the roller coaster cars lose energy as the ride continues. so, the hills have to be smaller toward the end of the track, finally we roll to a stop on ground level right where we began.Lesson 5 Language: How Children Acquire TheirsWhat I 'lie to talk to you about today is the topic of child Ian guage development. I know that you all are trying to develop a second Ianguage, but for a moment, let ' s think about a related topic, and that is:How childre n develop their first Ian guageWhat do we know about how babies develop their Ianguage and com muni cati on ability? Well, we know babies are able to com muni cate as soon as they are born,even before they learn to speak their firstIan guage. At first, they com muni cate by crying. This crying lets thei parents know when they are hungry, or unhappy, or uncomfortable. However, they soon begi n the process of acquiri ng their Ian guage. The first state of Ianguage acquisition begins just a few weeks after birth. At this stage, babies start to make cooing no ises whe n they are happy. Then, around four mon ths of age they beg in to babble. Babies all over the world beg in to babble around the same age, and they all beg in to make the same kinds of babbli ng no ises. Now, by the time they are ten mon ths old, however, the babbling of babies from different Ianguage backgro unds sounds differe nt. For example, the babbli ng of a baby in a Chin ese-speak ing home sounds differe nt from the babbli ng of a baby in an English-speaking home. Babies begin a new stage of Ianguage developme nt when they beg in to speak their first words. At first, they invent their own words for things. For example, a baby in an English-speaking home may say —baba II for the word —bottle II or —kiki II for —cat. I In the n ext few mon ths, babies will acquire a lot of words. These words are usually the names of things that are in the baby's en vir onment, words for food or toys, for example. They will begi n to use these words to com muni cate with others. For example, if a baby holds up an empty juice bottle and then says —juice, I to his father the baby seems to be saying, —I want more juice, Daddy II or —May I have more juice, Daddy? I This word — juice II is really a one-word senten ce.Now, the n ext stage of Ian guage acquisiti on begi ns around the age of 18 mon ths, whe n the babies begi n to say two-word senten ces. They begi n to use a kind of grammar to put these words together. The speech they produce is called —telegraphic I speech because the babies omit al but themost essential words. An English-speaking child might say something like —Daddy, up II which actually could mean —Daddy, pick me up, please.I Then, betwee n two and three years of age, young childre n beg in to lear n more and more grammar. For example, they begi n to use the past tense of verbs. The childre n beg in to say things such as —I walked home II and —I kissed Mommy. II They also beg in to overgeneralize this new grammar rule and make a log of grammar mistakes. For example, children often say such thins as —I goed to bed II in stead of — I went to bed, I or — I eated ice cream II in stead of —I ate ice cream. I In other words, the children have learned the past tense rule for regular verbs such as —walk II and —kiss, I but they haven' t learned that they cannot use this rule for all verbs. Some verbs like —eat II are irregular, and the past tense forms for irregular verbs must be lear ned in dividually. Any way, these mistakes are no rmal, and the childre n will soon lear n to use the past tense for regular and irregular verbs correctly. The children then continue to learn other grammatical structures in the same way.If we stop to think about it, actually it ' s quite amazing how quickly ba and childre n all over the world lear n their Ian guage and how similar the process is for babies all over the world.Do you remember any thi ng about how you lear ned your first Ian guageWhat was your first word? Was it ——mama II or maybe ——papa I ?Now think also about the process of learning English as a second Ianguage. Can you remember the first word you learned in English? I doubt that it was ——mama. II Now, think about some of the similarities and differences invoIved in the processes of child and adult Ianguage learning. We' ll talk about some similarities and differences in the first and sec ond Ianguage lear ning processes tomorrow. See you the n.Lesson 7 RobotsWhe n people thi nk about a robot, they ofte n picture a machi ne that look s something like a human being. However, tha' not always the case. Mo st robots do not look much like a human being at all, they look like machi nes becausethat 'what most of them are- in dustrial machi nes.Today, ' m oing to talk mostly about in dustrial robots used in in dustry. These are robots that do work that for huma ns would be physically dema nding, repetitive, dan gerous or very bori ng. Most in dustrial robots work on in an assembly line in a factory. For example, a robot might put liz on j ars of fruits or start boxesfor shaping. In a car factory, robotic arms on an assembly line join the parts of a car together; other robots tighten the bo atson the car 'w h eelsor paint the car. There are thousands of robots put ting cars together in ______ pla n. These robots are very precise whe n repeat ing a task. For example, they always tighten boats with the same exact a mount of force. They always move a heavy engine to exactly where it sho uld be and they always put ahold in the exact same place in every car do or hour after hour. These are examples of robots doing the work humans could do but the robots are doing the work more efficiently and preciselySo, just how do robots work? To do its job a robot first needs a control s ystem. This control system directs the robots mechanical parts. The contr ol system of a robot is sort of speak--a robot brain. So how does a robot l earn which action to do first and which of its moving part needs to do th at action?A robot learns its job with the help and guidance of a human b eing. To teach an industrial robot to do something, first a person must us e a hand-held computer. The computer is used to guide therobot 'a s rm a nd hand through the motions it needs to do. Then, the robot stores exact movement in its computer memory. The robot has sensors to gather info rmation, so now the robot will use its sensors to direct its actions. The ro bot tells its moving part what to do and then it performs the action. For e xample, to pick up and move a box, the robot first finds the box, next it d ecides the weight of the box. Then it decides how much force is needed t o lift and move thebox, and finally, it finds the correct place to put the b ox down. It repeats the process over and over until it's turned off. It does the same job until it is given the job and new program to follow. Some sc ientists think that robots of the future will be smarter than today's robot s. They may also look more human like or even animal like. In fact, they may work and think more like humans do. The industrial robots we've be en talking about so far today are automatic robots.They are known as automatic robots because they have program to follo w a specific series of movement. Usually, they have parts that move but t hey really don't travel around. On the other hand, an autonomous machi ne can change itsbehavior in relation to its surroundings. For example, an autonomous robot with wheelsor legs to move around can change direc tion when it senses that there are something in its way. A robot suchas …candetect the moveme nt of people n earby. It can move to avoid bump ing into sb. coming toward it. Asthma can even learn to dance by followi ng the movements of a dancer next to it. I don't know whether or when people would welcome autonomousmachines or human like robots. I gu ess that we will not only think about that in the future. We need to think about how we will interact with our global doctor: robal teacher, robal p et, or even our robal friend.Lesson 8 A Tidal WaveA tidal wave is a very large and very destructive wall of water that rushesin from the ocean towards the shore. Many scientists call these waves tsunami. InJapanesetsunami means “ stormwave. ”But do you know that tidal are not caused by storms and that they are not true tidal at all? A true tidal is the regular rise a waves and fall of ocean waters, at definite times each day, but a tidal wave comes rushing in suddenly and unexpectedly. A tidal wave is caused by an underwater earthquake. Theword “ seaquake ” is made up of two words, the word “seawhich me “ ocean a”nd the word “ quake ”“.Toquake ”means “ toshake ”or “totremble. ” When a seaquake takes place at the bottom of the ocean, the ocean floorshakes and trembles, and sometimes the ocean floor shifts. It is this shaking thatproduces the tidal wave. The tidal wave begins to move across the sea at great speed.Tidal waves have taken many human lives in the past. Today scientists can predict when a tidal wave will hit land. They use a seismograph to do this. A seismograph is an instrument that records the strength, the direction, and the length of time of an earthquake or seaquake. It is not possible to hold back a tidal wave, but it is possible to warn people that a tidal wave is coming. This warning can save many lives.Lesson 9 Levels of LanguageToday I want to talk about levels of language usage. You probably have noticed that people express similar ideas in different ways, depending on the situation they are in. This is very natural. All languages have two general, broad categories, or levels ofusage: a formal level and an informal level. English is no exception. I ' m not talking about correct anincorrect English. What I ' m talking about are two levels of correct English. The difference in these two levels is the situation in which you use a particular level. Formal language is the kind of language you find in textbooks, reference books such as encyclopedias, and in business letters.For example, a letter to a university would be in formal style. You would also use formal English in compositions and essaysthat you write in school. People usually use formal English when they give classroom lectures or speeches and at ceremonies such as graduations. We also tend to use formal language in conversations with persons we don' t know well or with people we have a formal relationship with, such as professors, bosses, doctors, friends of our parents 'str,angers, etc. Informal language is used in conversations with colleagues, family and friends, and when we write personal notes or letters to close friends, as well as in diaries, etc.Formal language is different from informal language in several ways.However, today I ' m going to talk only about a couple of ways. First of all,formal language tends to be more polite. Interestingly, it usually takesmore words to be polite. For example, I might say to a friend or family member, "Close the door, please", but to a stranger or someone in authority I probably would say "Would you mind closing the door" or "Excuse me, could you please close the door" Using words like "could" and "would" makes my request sound more polite, but alsomore formal. Another difference between formal and informal language is some of the vocabulary. There are some words and phrases that belong in formal language and others that are informal. Let me give you a couple of examples of what I mean. Let ' s say "I ' m just crazy about soccer!" But if Iwere talking to my supervisor or a friend of my parents 'I w, ould probably say "I really enjoy soccer" or "I like soccer very much". LetI ' mtelling someone some news I heard about the police arresting a criminal. To my friend I might say "The cops bagged the crook". To my parents ' friend I might say "The police arrested thhi e f"t.Although the line between formal and informal language is not always clear and although people are probably less formal today than in the past, it is useful to be aware that these two levels, or categories, do exist. The best way for a non-native speaker of English to learn the difference is to observe the different ways English speakers speak or write in different situations. Television newscasters, your college professors in class, your doctors in their offices, etc, will usually speak rather formally. However, your classmates, teammates, family members, friends, etc. will generallyspeak in an in formal fashi on. The differe nee can be lear ned over time by observ ing and in teract ing with n ative speakers.Lesson 10 Power: The Kinds People Use and AbuseJoh n Mack, who is the author of a book about power, says that the n eed for a sense of pers onal power is one of the primary forces in huma n life. On the other hand, he also says that a feeli ng of powerless ness is one of the most disturb ing of huma n emotions —a feeling to be avoided at all costs. Just what is power?Psychologists defi ne power as the ability to determ ine or to cha nge the acti ons or behavior of other people. Psychologists are trying to ide ntify differe nt kinds of power so that they can better un dersta nd how people use these differe nt kinds of power to gain con trol over other people. They are tryi ng to un dersta nd how people mani pulate other people for good and evil purposes. Psychologi sts have identified five basic types of power, and I to talk about each of these briefly in the n ext few mi nutes.The first type of power is called in formatio n power. Some psychologist believed like that in formati on power is one of the most effective types of power and con trol. The pers on who has in formati on that other people want and n eed, but do not have, is in a position of power. Why is this? Well, most people like to receive and have in formatio n. Havi ng in formatio n in creases a pers on ' sown sense of power. People who provide in formatio n can man ipulate those who donot have in formati on. Often, whe n people receive information, they do not know that they are being mani pulated by those who provided the in formati on. The psychologist n amed Edwards says, for example, that n ewspapers provide a lot of information to their readers, and that these n ewspaper readers gen erally believe the in formati on they read.Readers do not questio n the accuracy of the reports about world eve nts they read in the n ewspapers.A sec ond type of power is called referent power. For example, a person may want to behave like the members of a particular group, such as a soccer team ( or a group of classmates), or a pers on may identify with and want to be like a certain teacher, a friend, or say , a rock star. If you identify with another person, that person has power over you, and that pers on can in flue nee your acti onsand behavior. Many people imitate and are con trolled by the people they ide ntify with. Let me give you a sad example of the use of this type of power for evil purposes. In the 1970s in Jon estow n, Guya na, more tha n 900 people committed suicide when their religious leader Jim Jones told them to kill themselves. They did what he told them to do because he had referent power over them. They identified with him; they believe him, and they did what he told them to do. More rece ntly a man n amed David Koresh con trolled the lives and dest inies of a small com mun ity of men, wome n, and childre n in Waco, Texas. Most people in his community died in a fire, along with their leader, during a confron tati on with U.S. gover nment age nts.A third kind of power is classified as legitimate power. Government officials, according to Edwards, have a lot of legitimate power. When the gover nment decides to raise taxes or make people go to war, most people will do what their gover nment officials tell them to do. One psychologist reported on an experime nt that showed an example of this type of power. In this experiment, a researcher asked people on the street to move away from a bus stop. Whe n he was dressed as a civilia n, few people moved away from the bus stop. Whe n the researcher was dressed as a guard, mostpeople moved away from the bus stop. The guard ' s uniformseemed to give the researcher a look of legitimate power.A fourth kind of power is called expert power. An expert is apers on who is very skilled in some area, such as sports, or who knows a lot about somethi ng, such as computers. Most people are impressed by the skills or kno wledge of an expert. Some of these“ experts ” use their skills at playing sports or knowing about computers to gain power and in flue nee —and to gain money oradmirati on, accord ing to Edwards. In other words, they use their expertise to gain power.Fin ally, reward or coercive power is used by people who have the power to reward or punish another person ' s actions or behavior.Giving a reward will change people ' s behavior because it offerspeople a cha nee for gain. Giving a puni shme nt may or may not cause the people to do what the powerful pers on wants them to do, but the cha nges may not last for a long time. The pers on who uses coercive power may also have to carefully watch thatthe less powerful pers on does, in fact, cha nge his or her acti ons or behavior.To sum up, the n, power may be gained in many ways. It may come from having information that other people want or need; it may come from being a referent for other people to ide ntify with or to imitate; it may come from having an official, or legitimate, position of authority; it may come from having skills or expertise; or it may come from having the power to reward or punish people.We all exercise one or more of these various kinds of power over other people, and other people will try to exercise one or more of these kinds of power over us throughout our lives.Lesson 11 Asian and African Elephants: Similarities and Diffe rencesThe African and the Asian elephants are the largest land animals in the w orld. They are really enormous animals. The African and the Asian elepha nts are alike, or similar, i n many ways, but there are differe nces betwee n the 2 types of elepha nts, too.What are some of the similarities between the African and the Asian elep hant? Well, for one thi ng, both ani mals have long no ses, called trun ks. A n elephant sometimes uses its trunk like a third hand. Both kinds of elep hants use their trunks to pick up verysmall objects and very large, heavy objects. They can even pick up trees with their trunks. For another thing, both the African and the Asian elephants have very large ears, although t he African elephant 'ea s rs are considerably larger.In addition, both animals are intelligent. They can be trained to do heavy work. They can also be trained to do tricks to entertain people. In other words, they both work for people, and they entertain people also.As I said before, the African and Asian elephants are alike in many ways, but they are also quite different, too. Let me explain what I mean. The Af rican elephant is larger and heavier than the Asian elephant. Asian eleph ants reach a height of about 10 feet, and African elephants reach about 13 feet tall.The African male elephant weighs between 12,000 and 14,000 pounds. I n contrast, the average Asian male elephant weighs between 7,000 and 1 2,000 pounds. So one is bigger than the other, but as you can see,both are still enormous animals.Another difference between the 2 kinds of elephants is the size of the ea rs. Asian elephants have smaller ears than African elephants . The Africa n elephant has 2 very large teeth. These teeth are called tusks. The Asian elephanthowever sometimes does not have any tusks at all. The elephants differ i n color, too. The African elephant is dark gray in color while the Asian ele phant is light gray. Occasionally an Asian elephant is even white ! The last big difference between the 2 typesof elephants is their temperament. The Asian elephant is tamer than the African elephant, orin another way, the African elephant is much wilder than the Asian eleph ant. As a result,it 'm s ore difficult to train the African elephant to perfor m tricks to entertain people. That 'w s hy the elephants you see in the circ us are probably Asian elephants and not African elephants.Yes, there certainly are differences between the African and the Asian ele phants, but as I mention at the start of mytall, there is one big similarity between the 2 animals: they are both fasci nating and enormous animals.Lesson 13 Lincoln and KennedyJohn F. Kennedy and Abraham Lincoln lived in different times and had very different family and educational backgrounds. K ennedy lived in the 20th century; Lincoln lived in the 19th cen tury. Kennedy was born in 1917, whereas Lincoln was born m ore than a hundred years earlier, in 1809. As for their family b ackgrounds, Kennedy came from a rich family, but Lincoln 'f samily was not wealthy. Because Kennedy came from a wealthy family, he was able to attend expensive private schools. He graduated from Harvard University. Lincoln, on the other hand, had only one year of formal schooling. In spite of his lack of f ormal schooling, he became a well-known lawyer. He taught himself law by reading law books. Lincoln was, in other words, a self-educated man.In spite of these differences in Kennedy and Lincoln 'b s ackgr ounds, some interesting similarities between the 2 men are ev ident. In fact, books have been written about the strange coin cidences in the lives of these 2 men. Take for example ,their political careers. Lincoln began his political car eer in congress. Similarly, Kennedy also began his political car eer in congress. Lincoln was elected to the U.S. House of Repr esentatives in 1847, and Kennedy was elected to the House in 1947. So they were elected to congress exactly 100 years apart. Another interesting coincidence is that each man was e lected president of the United States in a year ending with the number 60. Lincoln was elected president in 1860, and Kenne dy was elected in 1960; furthermore, both men were presiden t during years of civil unrest in the country. Lincoln was presid ent during the American Civil War. At the time Kennedy became president,African-Americans were fighting for their21 /22civil rights , un rest took the form of civil rights dem on strati ons. Times change and it s just over 15 more years,the United States elected its first Africa n-America n preside nt Barack Obama . Preside nt Obama was elected in 2008 and get back to talk about Lincoln and Kenn edy. Another striking similarity between these 2 men was that, as y ou probably know, n either preside nt lived to complete his ter m in office. Li ncol n and Kenn edy were both assass in ated whil e in office. Kenn edy was assass in ated in 1963 inDallas, Texas, after only 1,000 days in office. Lincoln was assas sinated in 1865 a few days after the end of the American Civil War. It ' rather curious to note that both presidents were sh ot while they were sitting next to their wives.These are only a few examples of the unusual similarities in th e desti nies of these 2 America ns — men who had a treme ndou s impact on the social and political life in the United States an d the imagination of the American people.…,but let me。
视听说听力原文lesson1_13
Lesson 1 NapoleonToday, I’m going to talk to you about one of the most important historical figures in European history: Napoleon Bonaparte. Let ’s start by talking about his early life. Napoleon was born in 1769 on the island of Corsica. When he was only 10 years old, his father sent him to military school in France. Napoleon was not a very good student in most of his classes, but he excelled in mathematics and military science. When he was 16 years old,he joined the French army. In that year 1785,he began the military career that would bring him fame ,power,riches and finally defeat. Napoleon became a general in the French army at the young age of 24. Napoleon had many victories on the battlefield but he also became involved in French law and politics. And in 1804, at the age of 35,he became the first emperor of the France.Napoleon was many things. He was, first of all, a brilliant military leader. His soldiers were ready to die for him. As a result, N.won many military victories. At one time he controlled most of Europe, but some countries, including England, Russia, and Austria fought fiercely against him. His defeat —“his end”came when he decided to attack Russia. Inthis military campaign against Russia, he lost most of his army.The great French conqueror died alone – deserted by his family and friends in 1821. Napoleon was only 51 years old when he died.========================================= ==================Lesson 2 PompeiiThe lecture for this class is about the city of Pompeii. A natural disaster occurred there almost 2000 years ago.Today many rich people who live in large metropolitan areas such as Beijing, Paris and New York leave the city in the summer. They go to the mountains or to the seashore to escape the city noise and heat.2,000 years ago, wealthy Romans did the same thing.They left the city of Rome in the summer. Many of these wealthy Romans spent their summers in the city of Pompeii, a beautiful city, located on the Bay of Naples.In the summer of the year 79 C.E., a young Roman boy who later became a very famous Roman historian was visiting his uncle in P..The boy’s name was Pliny the Younger. One day Pliny was looking up at the sky. He saw a frightening sight. It was a very large dark cloud. This black cloud rose high into the sky. What Pliny saw was the eruption of the volcano called Mount Vesuvius.Rock and ash flew through the air. The city of P . was at the foot of Mt. V.. When the volcano first erupted, many people were able to get out of the city and to escape death. In fact, 18,000 people escaped the terrible disaster. Unfortunately, there was not enough time for everyone to escape. More than 2,000 people died. These unlucky people were buried alive under the volcanic ash.The eruption lasted for about 3 days. When the eruption was over, P . was buried under 20 feet of volcanic rock and ash. The city of P . was forgotten for almost 1,700 years.In the year of 1748 an Italian farmer was digging on his farm. As he was digging, he uncovered a part of a wall of the ancient city of P.. Soon archaeologists began to dig in the area. As time went by, much of the ancient city of P. was uncovered. Today tourists come from all over the world to see the ruins of the famous city of Pompeii.===========================================================Lesson 4 Roller CoasterLet's talk about the physics involved in a ride on a roller coaster. I'm sure many of you have taken a ride on a roller coaster. A simple roller coaster consists of a frame with a track on it. The track is very much like a train track, this track goes over a series of hills and around curves. It follows a path that ends at the same place it started. A train of cars travels around on this track, very fast. The cars have two sets of wheels. One set of wheels rolls on top of the track, and the others set of wheels rolls below the track. The wheels below the track keep the fast moving cars from coming off the track, roller coaster cars as you probably know don't have any motors or engines. Instead, a chain pulls the cars up the first, tallest and steepy staff hill, this is how the ride begins. Then, at the top of the hill the chain comes off the cars and gravity takes over. gravity pushes the cars down the other side of the hill. the taller and steeper the first hill is, the faster the ride will be. And the farther the cars will travel. as the cars rolled downhill they gained speed. the cars have enough speed and energy to send them up the next hill. as the cars near the top of the second hill they begin toslow down. but then, the cars reached the top of that hill, and start down the other side. gravity again pushes them toward the ground. this process repeats on each hale. Okay, so let's go over this process again. first, the cars are pulled by a chain up the first highest hill. then they go down a very steep slope, at this point, there is enough energy to pull the cars up and over the next hill. when they reached the bottom of that hill, there is enough energy to climb the next hill, the roller coaster cars lose energy as the ride continues. so, the hills have to be smaller toward the end of the track, finally we roll to a stop on ground level right where we began.========================================= ===============Lesson 5 Language: How Children Acquire TheirsWhat I’d lie to talk to you about today is the topic of child language development. I know that you all are trying to develop a second language, but for a moment, let’s think about a related topic, and that is: How children develop their first language. What do we know about how babies develop their language and communication ability? Well, we know babies are able tocommunicate as soon as they are born,even before they learn to speak their first language. At first, they communicate by crying. This crying lets their parents know when they are hungry, or unhappy, or uncomfortable. However, they soon begin the process of acquiring their language. The first state of language acquisition begins just a few weeks after birth. At this stage, babies start to make cooing noises when they are happy. Then, around four months of age they begin to babble. Babies all over the world begin to babble around the same age, and they all begin to make the same kinds of babbling noises. Now, by the time they are ten months old, however, the babbling of babies from different language backgrounds sounds different. For example, the babbling of a baby in a Chinese-speaking home sounds different from the babbling of a baby in an English-speaking home. Babies begin a new stage of language development when they begin to speak their first words. At first, they invent their own words for things. For example, a baby in an English-speaking home may say ―baba‖for the word ―bottle‖or ―kiki‖for ―cat.‖In the next few months, babies will acquire a lot of words. These words are usually the names of things that are in the baby’s environment, words for food or toys, for example. They will begin to use these words to communicate with others. For example, if ababy holds up an empty juice bottle and then says ―juice,‖to his father, the baby seems to be saying, ―I want more juice, Daddy‖or ―May I have more juice, Daddy?‖This word ―juice‖is really a one-word sentence.Now, the next stage of language acquisition begins around the age of 18 months, when the babies begin to say two-word sentences. They begin to use a kind of grammar to put these words together. The speech they produce is called ―telegraphic‖speech because the babies omit all but the most essential words. An English-speaking child might say something like ―Daddy, up‖which actually could mean ―Daddy, pick me up, please.‖Then, between two and three years of age, young children begin to learn more and more grammar. For example, they begin to use the past tense of verbs. The children begin to say things such as ―I walked home‖and ―I kissed Mommy.‖They also begin to overgeneralize this new grammar rule and make a log of grammar mistakes. For example, children often say such thins as ―I goed to bed‖instead of ―I went to bed,‖or ―I eated ice cream‖instead of ―I ate ice cream.‖In other words, the children have learned the past tense rule for regular verbs such as ―walk‖and ―kiss,‖but they haven’t learnedthat they cannot use this rule for all verbs. Some verbs like ―eat‖are irregular, and the past tense forms for irregular verbs must be learned individually. Anyway, these mistakes are normal, and the children will soon learn to use the past tense for regular and irregular verbs correctly. The children then continue to learn other grammatical structures in the same way.If we stop to think about it, actually it’s qu ite amazing how quickly babies and children all over the world learn their language and how similar the process is for babies all over the world.Do you remember anything about how you learned your first language during the early years of your life? Think about the process for a minute. What was your first word? Was it ―mama‖or maybe ―papa‖? Now think also about the process of learning English as a second language. Can you remember the first word you learned in English? I doubt that it was ―mama.‖Now, think about some of the similarities and differences involved in the processes of child and adult language learning. We’ll talk about some similarities and differences in the first and second language learning processes tomorrow. See you then.========================================== =================Lesson 7 RobotsWhen people think about a robot, they often picture a machine that looks something like a human being. However, that’s not al ways the case. Most robots do not look much like a human bein g at all, they look like machines because that’s what most of the m are- industrial machines.Today, I’m going to talk mostly about industrial robots used in industry. These are robots that do work that for humans would be physically demanding, repetitive, dangerous or very boring. Most industrial robots work on in an assembly line in a factory. For example, a robot might put liz on jars of fruits or start boxes for shaping. In a car factory, robotic arms on an assembly line jo in the parts of a car together; other robots tighten the boats on the car’s wheelsor paint the car. There are thousands of robots putting cars together in ___ plan. These robots are very precise when repeating a task. For example, they always tighten boats w ith the same exact amount of force. They always move a heavy engine to exactly where it should be and they always put aholdin the exact same place in every car door hour after hour. These are examples of robots doing the work humans could do but th e robots are doing the work more efficiently and precisely.So, just how do robots work? To do its job a robot first needs a control system. This control system directs the robots mechani cal parts. The control system of a robot is sort of speak--a robot brain. So how does a robot learn which action to do first and w hich of its moving part needs to do that action? A robot learns i ts job with the help and guidance of a human being. To teach a n industrial robot to do something, first a person must use a ha nd-held computer. The computer is used to guide the robot’s ar m and hand through the motions it needs to do. Then, the robo t stores exact movement in its computer memory. The robot has sensors to gather information, so now the robot will use its sen sors to direct its actions. The robot tells its moving part what to do and then it performs the action. For example, to pick up and move a box, the robot first finds the box, next it decides the we ight of the box. Then it decides how much force is needed to lif t and move the box, and finally, it finds the correct place to put the box down. It repeats the process over and over until it's turn ed off. It does the same job until it is given the job and new program to follow. Some scientists think that robots of the future w ill be smarter than today's robots. They may also look more hu man like or even animal like. In fact, they may work and think m ore like humans do. The industrial robots we've been talking ab out so far today are automatic robots.They are known as automatic robots because they have progra m to follow a specific series of movement. Usually, they have pa rts that move but they really don't travel around. On the other h and, an autonomous machine can change itsbehavior in relation to its surroundings. For example, an autonomous robot with wh eelsor legs to move around can change direction when it senses that there are something in its way. A robot such as …can detec t the movement of people nearby. It can move to avoid bumpin g into sb. coming toward it. Asthma can even learn to dance by following the movements of a dancer next to it. I don't know wh ether or when people would welcome autonomousmachines or human like robots. I guess that we will not only think about that in the future. We need to think about how we will interact with our global doctor: robal teacher, robal pet, or even our robal frie nd.========================================== =================Lesson 8 A Tidal WaveA tidal wave is a very large and very destructive wall of water that rushes in from the ocean towards the shore. Many scientists call these waves tsunami. In Japanese tsunami means “storm wave.” But do you know that tidal are not caused by storms and that they are not true tidal at all? A true tidal is the regular rise a waves and fall of ocean waters, at definite times each day, but a tidal wave comes rushing in suddenly and unexpectedly. A tidal wave is ca used by an underwater earthquake. The word “seaquake” is made up of two words, the word “sea” which means “ocean” and the word “quake”. “To quake” means “to shake” or “to tremble.” When a seaquake takes place at the bottom of the ocean, the ocean floor shakes and trembles, and sometimes the ocean floor shifts. It is this shaking that produces the tidal wave. The tidal wave begins to move across the sea at great speed.Tidal waves have taken many human lives in the past. Today scientists can predict when a tidal wave will hit land. They use a seismograph to do this. A seismograph is an instrument that records the strength, the direction, and the length of time of an earthquake or seaquake. It is not possible to hold back a tidalwave, but it is possible to warn people that a tidal wave is coming. This warning can save many lives.========================================== =================Lesson 9 Levels of LanguageToday I want to talk about levels of language usage. You probably have noticed that people express similar ideas in different ways, depending on the situation they are in. This is very natural. All languages have two general, broad categories, or levels of usage: a formal level and an informal level. English is no exception. I’m not talking about correct and incorrect English. What I’m talking about are two levels of correct English. The difference in these two levels is the situation in which you use a particular level. Formal language is the kind of language you find in textbooks, reference books such as encyclopedias, and in business letters. For example, a letter to a university would be in formal style. You would also use formal English in compositions and essays that you write in school. People usually use formal English when they give classroom lectures or speeches and at ceremonies such as graduations. We also tend to use formal language in conversations with persons wedon’t know well or with people we have a formal relationship with, such as professors, bosses, doctors, friends of our paren ts’, strangers, etc. Informal language is used in conversations with colleagues, family and friends, and when we write personal notes or letters to close friends, as well as in diaries, etc.Formal language is different from informal language in several wa ys. However, today I’m going to talk only about a couple of ways. First of all, formal language tends to be more polite. Interestingly, it usually takes more words to be polite. For example, I might say to a friend or family member, "Close the door, please", but to a stranger or someone in authority I probably would say "Would you mind closing the door" or "Excuse me, could you please close the door" Using words like "could" and "would" makes my request sound more polite, but also more formal. Another difference between formal and informal language is some of the vocabulary. There are some words and phrases that belong in formal language and others that are informal. Let me give you a couple of examples of what I mean. Let’s say "I’m just crazy about soccer!" But if I were talking to my supervisor or a friend of my parents’, I would probably say "I really enjoy soccer" or "I like soccer very much". Let’s say I’m telling someone some news I heard about the police arresting a criminal. To my friend I mightsay "The cops bagged the crook". To my parents’ friend I might say "The police arrested the thief".Although the line between formal and informal language is not always clear and although people are probably less formal today than in the past, it is useful to be aware that these two levels, or categories, do exist. The best way for a non-native speaker of English to learn the difference is to observe the different ways English speakers speak or write in different situations. T elevision newscasters, your college professors in class, your doctors in their offices, etc, will usually speak rather formally. However, your classmates, teammates, family members, friends, etc. will generally speak in an informal fashion. The difference can be learned over time by observing and interacting with native speakers.========================================== =================Lesson 10 Power: The Kinds People Use and Abuse John Mack, who is the author of a book about power, says that the need for a sense of personal power is one of the primary forces in human life. On the other hand, he also says that a feeling of powerlessness is one of the most disturbing of humanemotions ―a feeling to be avoided at all costs. Just what is power?Psychologists define power as the ability to determine or to change the actions or behavior of other people. Psychologists are trying to identify different kinds of power so that they can better understand how people use these different kinds of power to gain control over other people. They are trying to understand how people manipulate other people for good and evil purposes. Psychologists have identified five basic types of power, and I’d like to talk about each of these briefly in the next few minutes.The first type of power is called information power. Some psychologist believe that information power is one of the most effective types of power and control. The person who has information that other people want and need, but do not have, is in a position of power. Why is this? Well, most people like to receive and have information. Having information increases a person’s own sense of power. People who provide information can manipulate those who do not have information. Often, when people receive information, they do not know that they are being manipulated by those who provided the information. The psychologist named Edwards says, for example, that newspapersprovide a lot of information to their readers, and that these newspaper readers generally believe the information they read. Readers do not question the accuracy of the reports about world events they read in the newspapers.A second type of power is called referent power. For example, a person may want to behave like the members of a particular group, such as a soccer team ( or a group of classmates), or a person may identify with and want to be like a certain teacher, a friend, or say , a rock star. If you identify with another person, that person has power over you, and that person can influence your actions and behavior. Many people imitate and are controlled by the people they identify with. Let me give you a sad example of the use of this type of power for evil purposes. In the 1970s in Jonestown, Guyana, more than 900 people committed suicide when their religious leader Jim Jones told them to kill themselves. They did what he told them to do because he had referent power over them. They identified with him; they believe him, and they did what he told them to do. More recently a man named David Koresh controlled the lives and destinies of a small community of men, women, and children in Waco, Texas. Most people in hiscommunity died in a fire, along with their leader, during a confrontation with U.S. government agents.A third kind of power is classified as legitimate power. Government officials, according to Edwards, have a lot of legitimate power. When the government decides to raise taxes or make people go to war, most people will do what their government officials tell them to do. One psychologist reported on an experiment that showed an example of this type of power. In this experiment, a researcher asked people on the street to move away from a bus stop. When he was dressed as a civilian, few people moved away from the bus stop. When the researcher was dressed as a guard, most people moved away from the bus stop. The guard’s uniform seemed to give the researcher a look of legitimate power.A fourth kind of power is called expert power. An expert is a person who is very skilled in some area, such as sports, or who knows a lot about something, such as computers. Most people are impressed by the skills or knowledge of an expert. Some of these “experts” use their skills at playing sports or knowing about computers to gain power and influence ―and to gain money oradmiration, according to Edwards. In other words, they use their expertise to gain power.Finally, reward or coercive power is used by people who have the power to reward or punish another person’s actions or behavior. Giving a reward will change people’s behavior because it offers people a chance for gain. Giving a punishment may or may not cause the people to do what the powerful person wants them to do, but the changes may not last for a long time. The person who uses coercive power may also have to carefully watch thatthe less powerful person does, in fact, change his or her actions or behavior.To sum up, then, power may be gained in many ways. It may come from having information that other people want or need; it may come from being a referent for other people to identify with or to imitate; it may come from having an official, or legitimate, position of authority; it may come from having skills or expertise; or it may come from having the power to reward or punish people. We all exercise one or more of these various kinds of power over other people, and other people will try to exercise one or more of these kinds of power over us throughout our lives.========================================= =========Lesson 11 Asian and African Elephants: Similarities and DifferencesThe African and the Asian elephants are the largest land animals in the world. They are really enormous animals. The African and the Asian elephants are alike, or similar, in many ways, but ther e are differences between the 2 types of elephants, too. What are some of the similarities between the African and the A sian elephant? Well, for one thing, both animals have long noses , called trunks. An elephant sometimes uses its trunk like a third hand. Both kinds of elephants use their trunks to pick up very s mall objects and very large, heavy objects. They can even pick u p trees with their trunks. For another thing, both the African and the Asian elephants have very large ears, although the African e lephant’s ears are considerably larger.In addition, both animals are intelligent. They can be trained to do heavy work. They can also be trained to do tricks to entertai n people. In other words, they both work for people, and they e ntertain people also.As I said before, the African and Asian elephants are alike in ma ny ways, but they are also quite different, too. Let me explain w hat I mean. The African elephant is larger and heavier than the Asian elephant. Asian elephants reach a height of about 10 feet, and African elephants reach about 13 feet tall.The African male elephant weighs between 12,000 and 14,000 p ounds. In contrast, the average Asian male elephant weighs bet ween 7,000 and 12,000 pounds. So one is bigger than the other, but as you can see,both are still enormous animals.Another difference between the 2 kinds of elephants is the size of the ears. Asian elephants have smaller ears than African eleph ants . The African elephant has 2 very large teeth. These teeth a re called tusks. The Asian elephanthowever sometimes does not have any tusks at all. The elephant s differ in color, too. The African elephant is dark gray in color w hile the Asian elephant is light gray. Occasionally an Asian eleph ant is even white ! The last big difference between the 2 types of elephants is their temperament. The Asian elephant is tamer t han the African elephant, orin another way, the African elephant is much wilder than the Asi an elephant. As a result, it’s more difficult to train the African ele phant to perform tricks to entertain people. That’s why the elephants you see in the circus are probably Asian elephantsand not African elephants.Yes, there certainly are differences between the African and the Asian elephants, but as I mention at the start of mytall, there is one big similarity between the 2 animals: they are b oth fascinating and enormous animals.========================================== =================Lesson 13 Lincoln and KennedyJohn F. Kennedy and Abraham Lincoln lived in different times an d had very different family and educational backgrounds. Kenne dy lived in the 20th century; Lincoln lived in the 19th century. Ke nnedy was born in 1917, whereas Lincoln was born more than a hundred years earlier, in 1809. As for their family backgrounds, K ennedy came from a rich family, but Lincoln’s family was not we althy. Because Kennedy came from a wealthy family, he was able to attend expensive private schools. He graduated from Harvar d University. Lincoln, on the other hand, had only one year of fo rmal schooling. In spite of his lack of formal schooling, he beca me a well-known lawyer. He taught himself law by reading law b ooks. Lincoln was, in other words, a self-educated man.In spite of these differences in Kennedy and Lincoln’s backgroun ds, some interesting similarities between the 2 men are evident. In fact, books have been written about the strange coincidences in the lives of these 2 men. T ake forexample ,their political careers. Lincoln began his political career in congress. Similarly, Kennedy also began his political career in congress. Lincoln was elected to the U.S. House of Representati ves in 1847, and Kennedy was elected to the House in 1947. So they were elected to congress exactly 100 yearsapart. Another interesting coincidence is that each man was elec ted president of the United States in a year ending with the nu mber 60. Lincoln was elected president in 1860, and Kennedy w as elected in 1960; furthermore, both men were president durin g years of civil unrest in the country. Lincoln was president durin g the American Civil War. At the time Kennedy became president,African-Americans were fighting for their civil rights , unrest took the form of civil rights demonstrations.Times c hange and it’s just over 15 more years,the United States elected its first African-American president Barack Obama. President Obama was elected in 2008 and…,but let me get back to talk about Lincoln and Kennedy.。
高级英语视听说教程各章文本和练习答案19篇(供参考)
高级英语视听说教程各章文本和练习答案1-9篇Chapter 1 Napoleon：From Schoolboy to EmperorNapoleon was a French soldier who became emperor of France. He was born in 1769 on the island of Corsica. When he was only 10 years old, his father sent him to military school in France. N. wasn’t a very good student in most of his classes, but he excelled in mathematics and military science. When he was 16 years old, he joined the French army. In that year he began the military career that brought him fame, power, riches, and, finally, defeat. N. became a general in the French army at the young age of 24. Several years later, he became the emperor of the French Empire.N. was many things. He was, first of all, a brilliant military leader. His soldiers were ready to die for him. As a result, N. won many, many military victories. At one time he controlled most of Europe, but many countries, including England, Russia, and Austria fought fiercely against him. His defeat – his end – came when he decided to attack Russia. In this military campaign against Russia, he lost most of his army.The great French conqueror died alone -- deserted by his family and friends – in 1821. N. was only 51 years old when he died.PostlisteningA. The Comprehension Check1. Recognizing Information and Checking Accuracy1. When was Napoleon born? (a)2. What kind of student was Napoleon in most of his classes? (d)3. What did Napoleon's military career bring him? (d)4. When did Napoleon become emperor of the French Empire? (d)5. One reason that Napoleon won many military victories was that his soldiers were ready to fight to the death for him. (T)6. Austria and Russia fought fiercely against Napoleon, but England did not. (F England also fought against him.)7. Many of Napoleon's family and friends were with him when he died. (F He died alone and deserted by his family and friends.)8. Napoleon died before he reached the age of 52. (T)Listening Factoid#1The cause of Napoleon's death at the age of 51 on the island of St. Helena is still a mystery. There is no doubt that a very sick man at the time of his death. One theory about the cause of his death is that he had stomach cancer. Another theory is that he was deliberately poisoned by a servant. This third theory suggests that he was poisoned, but not by his servant. This third theory suggests that that he was poisoned, accidentally by fumes from the wallpaper were analyzed and traces of arsenic were found in it. Arsenic is powerful poison that was used in some of the dyes in wallpaper during the time that Napoleon lived. More than 170 years after his death, people are still speculating about the cause of his death.Listening Factoid #21. Ten people who speak make more noise than 10,000 who are silent.2. In politics, stupidity is not a handicap.3. A man will fight harder for his interests than for his rights.4. Men of genius are meteors intended to burn to light their century.5. I know, when it is necessary, how to leave the skin of the lion to take the skin of the fox.6. History is the version of past events that people have decided to agree upon.7. It is success which makes great men.Chapter 2 Pompeii：Destroyed, Forgotten, and FoundToday many people who live in large metropolitan areas such as Paris and New York leave the city in the summer. They go to the mountains or to the seashore to escape the city noise and heat. Over 2,000 years ago, many rich Romans did the same thing. They left the city of Rome in the summer. Many of these wealthy Romans spent their summers in the city of Pompeii. P. was a beautiful city; it was located on the ocean, on the Bay of Naples.In the year 79 C.E., a young boy who later became a very famous Roman historian was visiting his uncle in P.. The boy’s name was Pliny the Younger. One day Pliny was looking up at the sky. He saw a frightening sight. It was a very large dark cloud. This black cloud rose high into the sky. Rock and ash flew through the air. What Pliny saw was the eruption – the explosion -- of the volcano, Vesuvius. The city of P. was at the foot of Mt. V..When the volcano first erupted, many people were able to flee the city and to escape death. In fact, 18,000 people escaped the terrible disaster. Unfortunately, there was not enough time for everyone to escape. More than 2,000 people died. These unlucky people were buried alive under the volcanic ash. The eruption lasted for about 3 days. When the eruption was over, P. was buried under 20 feet of volcanic rock and ash. The city of P. was buried and forgotten for 1,700 years.In the year of 1748 an Italian farmer was digging on his farm. As he was digging, he uncovered a part of a wall of the ancient city of P.. Soon archaeologists began to excavate – to dig -- in the area. As time went by, much of the ancient city of P. was uncovered. Today tourists from all over the world come to see the ruins of the famous city of Pompeii.PostlisteningA. The Comprehension Check1. Recognizing Information and Checking Accuracy1. At what time of the year did wealthy Romans like to visit Pompeii? (in the summertime)2. In what year did Pliny pay a visit to his uncle/s house in Pompeii? (in 79 C.E.)3. What did Pliny see when he was looking out over the Bay of Naples one day? (a large dark cloud)4. Where was Pompeii located in relation to Mt. Vesuvius? (Pompeii was located at the foot of Mt. Vesuvius.)5. When did an Italian farmer discover a part of an ancient wall of Pompeii? {in 1748)6. Rome was located at the foot of Mt. Vesuvius. (F Pompeii was located at the foot of Mt. Vesuvius.)7. Most of the people of Pompeii were able to flee the city and to escape death. (T)8. Pompeii was buried under two feet of volcanic ash. (F Pompeii was buried under20 feet of volcanic ash.)9. Pompeii lay buried and forgotten between 79 C.E. and 1748. (T)10. The Italian farmer was looking for the ancient city of Pompeii. (F The farmer was digging on his farm.)11. Tourists come to excavate the city of Pompeii, (F Tourists come to see the ruins of the ancient city of Pompeii.)Listening factoid #1In 1951, an Australian pilot prevented his plane form being shot down-by flak form a volcano. The plane was flying over a volcano in Papua, New Guinea when the volcano suddenly erupted. It sent ash and flak 36,000 feet into the air. Bits of stone pounded against the plane’s wings and fuselage, but the pilot kept control and flew the plane to safety. Incidentally, almost 3,000 people on the ground died as a result of the eruption of this volcano.Listening factoid #2Pliny the Younger saw the eruption of Mount Vesuvius form a distance. On the day of the eruption, the boy’s uncle Pliny the Elder was in command of a Roman fleet which was not far off the shore of Pompeii. On seeing the remarkable eruption of Mt. Vesuvius, Pliny the Elder, who was a great naturalist, sailed to shore to take a look at the eruption of the mountain. On his approach to the shore, he was met by a shower of hot cinders which grew thicker and hotter as he advanced. He finally landed on the shore, and went to a house away form the beach. He even went to sleep, but later in the night, the servants woke him up. By then, the house had begun to rock so violently that Pliny and everyone in his household left the house and went toward the beach to escape. Tying pillowcases on their heads, and using torches to light the way, they groped their way to the beach. But it was too late for Pliny the Elder. Apparently, he became tired and lay down on the ground to rest. But when he lay down on the ground, he died. His death was probably due to carbon dioxide poisoning. Since CO2 is heavier than air, it hugs the ground and makes it impossible to breathe when one is close to the ground. It is likely that others in the area also died of carbon dioxide poisoning if they lay down to rest on the ground below Mt. Vesuvius.Chapter 3 Lance Armstrong: Survivor and WinnerLance Armstrong was born on September 18, 1971 in a suburb of Dallas, Texas, called Plano. Lance began running and swimming competitively when he was only 10 years old. By the time he was 13, he was competing in triathlons and won the Iron Kids Triathlon. Lance’s mother, who raised L. mostly by herself, recog nized and encouraged his competitive spirit.During his senior year in high school, L. was invited to train with the US Olympic cycling developmental team in Colorado. From that time on, L. focused completely on cycling. By 1991, L. was the US National Amateur Champion. He also won 2 major national races the same year -- even beating some professional cyclists.Although he was generally doing very well, L. had his ups and downs. In 1992, he was expected to do very well at the Barcelona Olympics, but finished in 14th place.This was a big disappointment. L. got over the disappointment and decided to turn professional. In his first professional race, the 1992 Classico San Sebastian, he ended up finishing dead last, 27 minutes behind the winner. L.’s mother continued to encourage L. through his difficult times.Things went much better for L. in the following years. In 1993, he was the youngest person to win the World Race Championships. In the same year, he entered the Tour de France for the first time. He won one stage of the race, but dropped out of the race before finishing. In 1995, he even won the Classico S. S., the race he had finished last in, in 1992. L. also won the most important US tournament, the Tour du Pont, 2 times, in both 1995 and 1996. By 1996, L. was ranked 7th among cyclists in the world, and he signed a 2-year contract with a French racing team. At that time, everything was looking very good for L.A..However, everything changed dramatically and drastically in October of 1996, shortly after his 25th birthday. At this time, L. was diagnosed with advanced cancer that had already spread to his brain and lungs. He almost immediately underwent 2 cancer surgeries. After these 2 surgeries, he was given a 50-50 chance of survival as he began an aggressive 3-month course of chemotherapy. The chemotherapy left L. very weak, but the treatment worked well. Quite soon after, L. was declared free of cancer. L. returned to cycling and training only 5 months after he was initially diagnosed with cancer. He vowed he would return to competitive cycling better than ever.However, his French cycling team dropped L. from the team. They didn’t believe that L. would ever be able to return to his former level of strength and endurance. Fortunately the US Postal Service Team became his new sponsor. With the support of the US Postal Service Team, L. returned to racing in 1998. After one particularly bad day during one of his races, L. pulled over and decided he was done with racing. However, after spending time with his really good cycling friends, L. returned to racing, and again he was off again in pursuit of cycling victories!L.’s big comeback was marked by his victory at the 1999 Tour de France. L. repeated this feat in the years 2000, 2001, 2002, 2003 and 2004, for a total of 6 consecutive victories in the Tour de France, the most prestigious and the most grueling of all cycling contests. L.s’ Tour de France record may never be beaten or even matched. Interestingly, L. was the youngest person to win the World Cycling Championships in 1993 and the oldest person ever to win the Tour de France in 2004!In addition to his amazing athletic performance, L.A. has established the L.A. Foundation, which is devoted to providing information about cancer and support to cancer victims. He has also written a book about his life and winning the TdF, called Every Second Counts, and for L., every second has counted.L.A. gives a lot of credit for his success to his mother, whose independent spirit and support for L. inspired h im to overcome all of life’s obstacles, both on and off the racetrack. Lance, in return, has provided inspiration to many, for his courage – both athletic and personal.PostlisteningA. The Comprehension Check1. Recognizing Information and Checking Accuracy1. How old was Lance when he began running and swimming competitively? (b)2. Which sports contest did Lance win when he was 13 years old? (b)3. How old was Lance when he was diagnosed with advanced cancer? (c)4. What chance for survival was Lance given after he underwent two surgeries? (c)5. Who was Lance's sponsor when he won the Tour de France in 1999? (d)6. What is the name of the book that Lance wrote that is mentioned in the lecture?(b)7. Lauce’s cancer had already spread to his lungs and brain before it was diagnoised? (T)8. Lauce’s French team dropped Lauce because they didn’t think he would ever return to his former level of strength and endurance. (T)9. Lauce won the Classico San Sebastian two times. (F He lost the first time and won the second time.)10. Lauce is the only cyclist to win the Tour de France five times consecutively. (F Lauce is the only person to win the Tour de France six times consecutively.) Listening factoid #1Amazingly enough, the bicycle is a more efficient mean of transportation than any other method of traveling. It takes much less energy to bicycle one mile than it does to walk one mile. In fact, it can take up to five times as much energy to walk a mile than to bicycle a mile. If we compare the amount of energy a human being uses to bicycle three miles, or about 5 kilometers, we find this amount of energy would power a car for only about 278 feet, or 85 meters.Listening factoid #2According to Professor Steve Jones, the three most important inventions in the history of mankind were fire, speech, and the bicycle. He says that the invention of fire freed human being from the power of climate, dangerous animals, and monotonous diets. The invention of speech meant that human being s could begin to build civilization. And the invention of the bicycle –by which he really means modern transportation in general- meant that groups of human beings were no longer isolated, but could travel great distances. Being able to travel much more freely meant that there could never again be more than one species of human beings as there had been in ancient times.Chapter 4 The Internet: How it WorksThe Internet consists of millions of computers, all linked together into a gigantic network. Now every computer that is connected to the Internet is part of this network and can communicate with any other connected computer.In order to communicate with each other, these computers are equipped with special communication software. To connect to the Internet, the user instructs the compute r’s communication software to contact the Internet Service Provider, or ISP. Now an Internet Service Provider, or ISP, is a company that provides Internet service to individuals, organizations, or companies, usually for a monthly charge. Local ISPs connect to larger ISPs, which in turn connect to even larger ISPs. A hierarchy ofnetworks is formed. And this hierarchy is something like a pyramid, with lots of small networks at the bottom, and fewer but larger networks moving up the pyramid. But, amazingly, there is no one single controlling network at the top. Instead, there are dozens of high-level networks, which agree to connect with each other. It is through this process that everyone on the Internet is able to connect with everyone else on the Internet, no matter where he or she is in the world.How does information that leaves one computer travel through all of these networks, and arrives at its destination, another computer, in a fraction of a second?The process depends on routers. Now routers are specialized computers whose job is to direct the information through the networks. The data, or information, in an e-mail message, a Web page, or a file is first broken down into tiny packets. Each of these packets has the address of the sender and of the receiver, and information on how to put the packets back together. Each of these packets is then sent off through the Internet. And when a packet reaches a router, the router reads its destination address. And the router then decides the best route to send the packet on its way to its destination. All the packets might take the same route or they might go different routes. Finally, when all the packets reach their destination, they are put back into the correct order.To help you understand this process, I’m going to ask you to think of these packets of information as electronic postcards. Now imagine that you want to send a friend a book, but you can send it only as postcards. First, you would have to cup up each of the pages of the book to the size of the postcards. Next, you would need to write your address and the address of your friend on each of these postcards. You would also need to number the postcards so that your friend could put them in the correct order after he receives the postcards. After completing these steps, you would put all the postcards in the mail. You would have no way to know how each postcard traveled to reach your friend. Some might go by truck , some by train, some by plane, some by boat. Some might go by all 4 ways. Now along the way, many postal agents may look at the addresses on the postcards in order to decide the best route to send them off on to reach their destination. The postcards would probably arrive at different times. But finally, after all of the postcards had arrived, your friend would be able to put them back in the correct order and read the book.Now this is the same way that information is sent over the Internet using the network of routers, but of course it happens much, much faster!PostlisteningA. The Comprehension Check1. Recognizing Information and Checking Accuracy1. What is the Internet? (d)2. What is a router? (c)3. What is carried on every tiny packet of information that travels through the Internet? (d)4. What is a router compared to in the lecture? (b)5. The Internet is controlled by one gigantic ISP. (F There is no one controlling network at the top)6. Routers can send the packets of information in one e-mail massage over many different routes to their destination. (T)7. The lecturer compares the tiny packets of information that travel through the Internet to electronic postcards. (T)Listening factoid #1Jeff Hancock, a scientist at Cornell University, asked 30 students to keep a communication diary for a week. The students wrote down the numbers of conversations they had either face-to-face or on the telephone and the number of e-mail exchanges they had, both regular e-mails and instant messages, that lasted more than 10 minutes. They also wrote down the number of lies they had told in each conversation or e-mail exchange. When Jeff Hancock analyzed the students’ communication records, he found that lies made up 14 percent of e-mails, 21 percent of instant messages, 27 percent of face-to-face conversations, and 37 percent of phone calls.His findings surprised some psychologists, who thought it would be easier to lie in e-mail than in real-time conversations. One explanation is that people are less likely to lie when there will be a record of their lies, such as in an e-mail.Listening factoid #2If you have an e-mail account, you have no doubt been spammed. That is, you have received unsolicited e-mail from someone you don’t know, someone who is usually trying to sell you something!Most people say that they hate spam. For many people, spam mail is just a nuisance, but for businesses it’s very expensive, as their employee waste considerable working time going through and deleting span. According to Message Labs, a company that provides e-mail security, 76% of the world’s e-mail is spam and it costs businesses approximately $12 billion dollars a year. According to a survey by Commtouch Software, another anti-spam company, in the last few months the number of spam attacks increased by 43%. Their report predicts that within two years, 98% of all e-mail will be spam!Chapter 5 Language: How Children Acquire TheirsWhat I’d lie to talk to you about today is the topic of child language development. I know that you all are trying to develop a second language, but for a moment, let’s think about a related topic, and that is: How children develop their first language. What do we know about how babies develop their language and communication ability? Well, we know babies are able to communicate as soon as they are born―even before they learn to speak their first language. At first, they communicate by crying. This crying lets their parents know when they are hungry, or unhappy, or uncomfortable. However, they soon begin the process of acquiring their language. The first state of language acquisition begins just a few weeks after birth. At this stage, babies start to make cooing noises when they are happy. Then, around four months of age they begin to babble. Babies all over the world begin to babble around the same age, and they all begin to make the same kinds of babbling noises. Now, by the time they are ten months old, however, the babbling of babies from different language backgrounds sounds different. For example, the babbling of ababy in a Chinese-speaking home sounds different from the babbling of a baby in an English-speaking home. Babies begin a new stage of language development when they begin to speak their first words. At first, they invent their own words for things. For example, a baby in an English-speaking home may say “baba” for the word “bottle” or “kiki” for “cat.” In the next few months, babies will acquire a lot of words. These words are usually the names of things that are in the baby’s environment, words for food or toys, for example. They will begin to use these words to communicate with others. For example, if a baby holds up an empty juice bottle and then says “juice,” to his father, the baby seems to be saying, “I want more juice, Daddy” or “May I have more juice, Daddy?” This word “juice” is really a one-word sentence.Now, the next stage of language acquisition begins around the age of 18 months, when the babies begin to say two-word sentences. They begin to use a kind of grammar to put these words together. The speech they produce is called “telegraphic” speech because the babies omit all but the most essential words. An English-speaking child might say something like “Daddy, up” which actually could mean “Daddy, pick me up, please.” Then, between two and three years of age, young children begin to learn more and more grammar. For example, they begin to use the past tense of verbs. The children begin to say things such as “I walked home” and “I kissed Mommy.” They also begin to overgeneralize this new grammar rule and make a log of grammar mistakes. For example, children often s ay such thins as “I goed to bed” instead of “I went to bed,” or “I eated ice cream” instead of “I ate ice cream.” In other words, the children have learned the past tense rule for regular verbs such as “walk” and “kiss,” but they haven’t learned that they cannot use this rule for all verbs. Some verbs like “eat” are irregular, and the past tense forms for irregular verbs must be learned individually. Anyway, these mistakes are normal, and the children will soon learn to use the past tense for regular and irregular verbs correctly. The children then continue to learn other grammatical structures in the same way.If we stop to think about it, actually it’s quite amazing how quickly babies and children all over the world learn their language and how similar the process is for babies all over the world.Do you remember anything about how you learned your first language during the early years of your life? Think about the process for a minute. What was your first word? Was it “mama” or maybe “papa”? Now think al so about the process of learning English as a second language. Can you remember the first word you learned in English? I doubt that it was “mama.” Now, think about some of the similarities and differences involved in the processes of child and adult langua ge learning. We’ll talk about some similarities and differences in the first and second language learning processes tomorrow. See you then.PostlisteningA. The Comprehension Check1. Recognizing Information and Checking Accuracy1. At what age do babies begin to communicate? (a)2. Which of the following is an example of “telegraphic” speech? (b)3. At what age do children begin to use the past tense? (c)4. At four months of age the babbling of babies sounds the same all over the world. (T)5. A baby’s f irst words are usually words that he or she inverts. (T)6. A child uses only vocabulary and no grammar before about two years of age. (F He/she actually used a kind of grammar in making two-word sentences at about 18months of age.)7. Children probably sa y “I goed” instead of “I went” because they hear their parents say this. (F Children say “I goed” instead of “I went” because they are overgeneralizing the grammar rule for the regular past tense verbs to the irregular verb “go.”)Listening Factoid #1Have you ever wondered about what the world's original language was? Or whether children would begin to speak if they never heard language? Well, more than 2,500 years ago, an Egyptian pharaoh asked himself the same questions. He had the idea that children who didn't hear adults speaking any language would begin to speak the world's "original language." So he had two newborn babies of poor parents taken away from them. He gave the babies to a shepherd to take care of. No one was allowed to speak to them. About two years later, the shepherd reported to the pharaoh that the children were making a sound like "bekos." This sound "bekos" sounded like the word for bread in the Phrygian language, so the pharaoh concluded that Phrygian was the original language in the world. There was only one problem with the pharaoh's conclusion. He overlooked the fact that "bekos" sounded very much like the noise that sheep make!Listening factoid #2Do you know that grownups use baby talk? Why? To help babies learn to speak David Sacks, a linguist, says that, "babies in their first year of life learn to speak-first in baby talk, then with the rudiments of genuine vocabulary-by imitating the speech sounds they hear around them. (Often these sounds are addressed to the baby in an exaggerated, singsong form; for example, "How did you sleeeep? " which apparently helps the child to learn.) But some scholars have theorized that language in the nursery is partly a two-way street and that certain family-related words in English and other tongues were formed originally-perhaps prehistorically-in imitation of baby talk. Such words are easy for babies to pronounce. The parent will say to the baby, "Say dada" and so the word "dada" retains a secure place in the language. What are these words that are easy to say? While the words vary from language to language, in English they are some of the "ba," "da," "ma," and “pa" words.The earliest speech sounds out of an infant's mouth, sometimes as early as the second month of life, might typically be pure vowels. The sounds "ah," "ee," and "oo" are said to predominate among babies all over the world, with "ah " as the earliest and most frequent sound. The infant's next step, usually begun before four months of age, is to float a consonant sound in front of the vowel: "ma-ma-ma," the sound of pure baby talk.Chapter 6 Hydroponic Aquaculture: How One System Works。
高级英语视听说教程 教师用书电子版(第一册)【完整版】
高级英语视听说教程教师用书电子版（第一册）【完整版】(文档可以直接使用，也可根据实际需要修订后使用,可编辑放心下载）Chapter 1 Napoleon：From Schoolboy to EmperorNapoleon was a French soldier who became emperor of France. He was born in 1769 on the island of Corsica. When he was only 10 years old, his father sent him to military school in France. N. wasn’t a very goo d student in most of his classes, but he excelled in mathematics and military science. When he was 16 years old, he joined the French army. In that year he began the military career that brought him fame, power, riches, and, finally, defeat. N. became a general in the French army at the young age of 24. Several years later, he became the emperor of the French Empire.N. was many things. He was, first of all, a brilliant military leader. His soldiers were ready to die for him. As a result, N. won many, many military victories. At one time he controlled most of Europe, but many countries, including England, Russia, and Austria fought fiercely against him. His defeat – his end – came when he decided to attack Russia. In this military campaign against Russia, he lost most of his army.The great French conqueror died alone -- deserted by his family and friends – in 1821. N. was only 51 years old when he died.PostlisteningA. The Comprehension Check1. Recognizing Information and Checking Accuracy1. When was Napoleon born? (a)2. What kind of student was Napoleon in most of his classes? (d)3. What did Napoleon's military career bring him? (d)4. When did Napoleon become emperor of the French Empire? (d)5. One reason that Napoleon won many military victories was that his soldiers were ready to fight to the death for him. (T)6. Austria and Russia fought fiercely against Napoleon, but England did not. (F England also fought against him.)7. Many of Napoleon's family and friends were with him when he died. (F He died alone and deserted by his family and friends.)8. Napoleon died before he reached the age of 52. (T)Listening Factoid#1The cause of Napoleon's death at the age of 51 on the island of St. Helena is still a mystery. There is no doubt that a very sick man at the time of his death. One theory about the cause of his death is that he had stomach cancer. Another theory is that he was deliberately poisoned by a servant. This third theory suggests that he was poisoned, but not by his servant. This third theory suggests that that he was poisoned, accidentally by fumes from the wallpaper were analyzed and traces of arsenic were found in it. Arsenic is powerful poison that was used in some of the dyes in wallpaper during the time that Napoleon lived. More than 170 years after his death, people are still speculating about the cause of his death.Listening Factoid #21. Ten people who speak make more noise than 10,000 who are silent.2. In politics, stupidity is not a handicap.3. A man will fight harder for his interests than for his rights.4. Men of genius are meteors intended to burn to light their century.5. I know, when it is necessary, how to leave the skin of the lion to take the skin of the fox.6. History is the version of past events that people have decided to agree upon.7. It is success which makes great men.Chapter 2 Pompeii：Destroyed, Forgotten, and FoundToday many people who live in large metropolitan areas such as Paris and New York leave the city in the summer. They go to the mountains or to the seashore to escape the city noise and heat. Over 2,000 years ago, many rich Romans did the same thing. They left the city of Rome in the summer. Many of these wealthy Romans spent their summers in the city of Pompeii. P. was a beautiful city; it was located on the ocean, on the Bay of Naples.In the year 79 C.E., a young boy who later became a very famous Roman historian was visiting his uncle in P.. The boy’s name was Pliny the Younger. One day Pliny was looking up at the sky. He saw a frightening sight. It was a very large dark cloud. This black cloud rose high into the sky. Rock and ash flew through the air. What Pliny saw was the eruption – the explosion -- of the volcano, Vesuvius. The city of P. was at the foot of Mt. V..When the volcano first erupted, many people were able to flee the city and to escape death. In fact, 18,000 people escaped the terrible disaster. Unfortunately, there was not enough time for everyone to escape. More than 2,000 people died. These unlucky people were buried alive under the volcanic ash. The eruption lasted for about 3 days. When the eruption was over, P. was buried under 20 feet of volcanic rock and ash. The city of P. was buried and forgotten for 1,700 years.In the year of 1748 an Italian farmer was digging on his farm. As he was digging, he uncovered a part of a wall of the ancient city of P.. Soon archaeologists began to excavate – to dig -- in the area. As time went by, much of the ancient city of P. was uncovered. Today tourists from all over the world come to see the ruins of the famous city of Pompeii.PostlisteningA. The Comprehension Check1. Recognizing Information and Checking Accuracy1. At what time of the year did wealthy Romans like to visit Pompeii? (in the summertime)2. In what year did Pliny pay a visit to his uncle/s house in Pompeii? (in 79 C.E.)3. What did Pliny see when he was looking out over the Bay of Naples one day? (a large dark cloud)4. Where was Pompeii located in relation to Mt. Vesuvius? (Pompeii was located at the foot of Mt. Vesuvius.)5. When did an Italian farmer discover a part of an ancient wall of Pompeii? {in 1748)6. Rome was located at the foot of Mt. Vesuvius. (F Pompeii was located at the foot of Mt. Vesuvius.)7. Most of the people of Pompeii were able to flee the city and to escape death. (T)8. Pompeii was buried under two feet of volcanic ash. (F Pompeii was buried under 20 feet of volcanic ash.)9. Pompeii lay buried and forgotten between 79 C.E. and 1748. (T)10. The Italian farmer was looking for the ancient city of Pompeii. (F The farmer was digging on his farm.)11. Tourists come to excavate the city of Pompeii, (F Tourists come to see the ruins of the ancient city of Pompeii.)Listening factoid #1In 1951, an Australian pilot prevented his plane form being shot down-by flak form a volcano. The plane was flying over a volcano in Papua, New Guinea when the volcano suddenly erupted. It sent ash and flak 36,000 feet into the air. Bits of stone pounded against the plane’s wings and fuselage, but the pilot kept con trol and flew the plane to safety. Incidentally, almost 3,000 people on the ground died as a result of the eruption of this volcano.Listening factoid #2Pliny the Younger saw the eruption of Mount Vesuvius form a distance. On the day of the eruption, the boy’s uncle Pliny the Elder was in command of a Roman fleet which was not far off the shore of Pompeii. On seeing the remarkable eruption of Mt. Vesuvius, Pliny the Elder, who was a great naturalist, sailed to shore to take a look at the eruption of the mountain. On his approach to the shore, he was met by a shower of hot cinders which grew thicker and hotter as he advanced. He finally landed on the shore, and went to a house away form the beach. He even went to sleep, but later in the night, the servants woke him up. By then, the house had begun to rock so violently that Pliny and everyone in his household left the house and went toward the beach to escape. Tying pillowcases on their heads, and using torches to light the way, they groped their way to the beach. But it was too late for Pliny the Elder. Apparently, he became tired and lay down on the ground to rest. But when he lay down on the ground, he died. His death was probably due to carbon dioxide poisoning. Since CO2 is heavier than air, it hugs the ground and makes it impossible to breathe when one is close to the ground. It is likely that others in the area also died of carbon dioxide poisoning if they lay down to rest on the ground below Mt. Vesuvius.Chapter 3 Lance Armstrong: Survivor and WinnerLance Armstrong was born on September 18, 1971 in a suburb of Dallas, Texas, called Plano. Lance began running and swimming competitively when he was only 10 years old. By the time he was 13, he was competing in triathlons and won the IronKids Triathlon. Lance’s mother, who raised L. mostly by herself, recognized and encouraged his competitive spirit.During his senior year in high school, L. was invited to train with the US Olympic cycling developmental team in Colorado. From that time on, L. focused completely on cycling. By 1991, L. was the US National Amateur Champion. He also won 2 major national races the same year -- even beating some professional cyclists.Although he was generally doing very well, L. had his ups and downs. In 1992, he was expected to do very well at the Barcelona Olympics, but finished in 14th place. This was a big disappointment. L. got over the disappointment and decided to turn professional. In his first professional race, the 1992 Classico San Sebastian, he ended up finishing dead last, 27 minutes behind the winner. L.’s mother continued to encourage L. through his difficult times.Things went much better for L. in the following years. In 1993, he was the youngest person to win the World Race Championships. In the same year, he entered the Tour de France for the first time. He won one stage of the race, but dropped out of the race before finishing. In 1995, he even won the Classico S. S., the race he had finished last in, in 1992. L. also won the most important US tournament, the Tour du Pont, 2 times, in both 1995 and 1996. By 1996, L. was ranked 7th among cyclists in the world, and he signed a 2-year contract with a French racing team. At that time, everything was looking very good for L.A..However, everything changed dramatically and drastically in October of 1996, shortly after his 25th birthday. At this time, L. was diagnosed with advanced cancer that had already spread to his brain and lungs. He almost immediately underwent 2 cancer surgeries. After these 2 surgeries, he was given a 50-50 chance of survival as he began an aggressive 3-month course of chemotherapy. The chemotherapy left L. very weak, but the treatment worked well. Quite soon after, L. was declared free of cancer. L. returned to cycling and training only 5 months after he was initially diagnosed with cancer. He vowed he would return to competitive cycling better than ever.However, his French cycling team dropped L. from the team. They didn’t believe that L. would ever be able to return to his former level of strength and endurance. Fortunately the US Postal Service Team became his new sponsor. With the support of the US Postal Service Team, L. returned to racing in 1998. After one particularly bad day during one of his races, L. pulled over and decided he was done with racing. However, after spending time with his really good cycling friends, L. returned to racing, and again he was off again in pursuit of cycling victories!L.’s big comeback was marked by his victory at the 1999 Tour de France. L. repeated this feat in the years 2000, 2001, 2002, 2003 and 2004, for a total of 6 consecutive victories in the Tour de France, the most prestigious and the most grueling of all cycling contests. L.s’ Tour de France record may never be beaten or even matched. Interestingly, L. was the youngest person to win the World Cycling Championships in 1993 and the oldest person ever to win the Tour de France in 2004!In addition to his amazing athletic performance, L.A. has established the L.A.Foundation, which is devoted to providing information about cancer and support to cancer victims. He has also written a book about his life and winning the TdF, called Every Second Counts, and for L., every second has counted.L.A. gives a lot of credit for his success to his mother, whose independent spirit and support for L. inspired him to overcome all of life’s obstacles, both on and off the racetrack. Lance, in return, has provided inspiration to many, for his courage – both athletic and personal.PostlisteningA. The Comprehension Check1. Recognizing Information and Checking Accuracy1. How old was Lance when he began running and swimming competitively? (b)2. Which sports contest did Lance win when he was 13 years old? (b)3. How old was Lance when he was diagnosed with advanced cancer? (c)4. What chance for survival was Lance given after he underwent two surgeries? (c)5. Who was Lance's sponsor when he won the Tour de France in 1999? (d)6. What is the name of the book that Lance wrote that is mentioned in the lecture?(b)7. Lauce’s cancer had already spread to his lungs and brain before it was diagnoised? (T)8. Lauce’s French team dropped Lauce because they didn’t think he would ever return to his former level of strength and endurance. (T)9. Lauce won the Classico San Sebastian two times. (F He lost the first time and won the second time.)10. Lauce is the only cyclist to win the Tour de France five times consecutively. (F Lauce is the only person to win the Tour de France six times consecutively.) Listening factoid #1Amazingly enough, the bicycle is a more efficient mean of transportation than any other method of traveling. It takes much less energy to bicycle one mile than it does to walk one mile. In fact, it can take up to five times as much energy to walk a mile than to bicycle a mile. If we compare the amount of energy a human being uses to bicycle three miles, or about 5 kilometers, we find this amount of energy would power a car for only about 278 feet, or 85 meters.Listening factoid #2According to Professor Steve Jones, the three most important inventions in the history of mankind were fire, speech, and the bicycle. He says that the invention of fire freed human being from the power of climate, dangerous animals, and monotonous diets. The invention of speech meant that human being s could begin to build civilization. And the invention of the bicycle –by which he really means modern transportation in general- meant that groups of human beings were no longer isolated, but could travel great distances. Being able to travel much more freely meant that there could never again be more than one species of human beings as there had been in ancient times.Chapter 4 The Internet: How it WorksThe Internet consists of millions of computers, all linked together into a gigantic network. Now every computer that is connected to the Internet is part of this network and can communicate with any other connected computer.In order to communicate with each other, these computers are equipped with special communication software. To connect to the Internet, the user instructs the computer’s communication software to contact the Internet Service Provider, or ISP. Now an Internet Service Provider, or ISP, is a company that provides Internet service to individuals, organizations, or companies, usually for a monthly charge. Local ISPs connect to larger ISPs, which in turn connect to even larger ISPs. A hierarchy of networks is formed. And this hierarchy is something like a pyramid, with lots of small networks at the bottom, and fewer but larger networks moving up the pyramid. But, amazingly, there is no one single controlling network at the top. Instead, there are dozens of high-level networks, which agree to connect with each other. It is through this process that everyone on the Internet is able to connect with everyone else on the Internet, no matter where he or she is in the world.How does information that leaves one computer travel through all of these networks, and arrives at its destination, another computer, in a fraction of a second?The process depends on routers. Now routers are specialized computers whose job is to direct the information through the networks. The data, or information, in an e-mail message, a Web page, or a file is first broken down into tiny packets. Each of these packets has the address of the sender and of the receiver, and information on how to put the packets back together. Each of these packets is then sent off through the Internet. And when a packet reaches a router, the router reads its destination address. And the router then decides the best route to send the packet on its way to its destination. All the packets might take the same route or they might go different routes. Finally, when all the packets reach their destination, they are put back into the correct order.To help you understand this process, I’m going to ask you to think of these packets of information as electronic postcards. Now imagine that you want to send a friend a book, but you can send it only as postcards. First, you would have to cup up each of the pages of the book to the size of the postcards. Next, you would need to write your address and the address of your friend on each of these postcards. You would also need to number the postcards so that your friend could put them in the correct order after he receives the postcards. After completing these steps, you would put all the postcards in the mail. You would have no way to know how each postcard traveled to reach your friend. Some might go by truck , some by train, some by plane, some by boat. Some might go by all 4 ways. Now along the way, many postal agents may look at the addresses on the postcards in order to decide the best route to send them off on to reach their destination. The postcards would probably arrive at different times. But finally, after all of the postcards had arrived, your friend would be able to put them back in the correct order and read the book.Now this is the same way that information is sent over the Internet using the network of routers, but of course it happens much, much faster!PostlisteningA. The Comprehension Check1. Recognizing Information and Checking Accuracy1. What is the Internet? (d)2. What is a router? (c)3. What is carried on every tiny packet of information that travels through the Internet? (d)4. What is a router compared to in the lecture? (b)5. The Internet is controlled by one gigantic ISP. (F There is no one controlling network at the top)6. Routers can send the packets of information in one e-mail massage over many different routes to their destination. (T)7. The lecturer compares the tiny packets of information that travel through the Internet to electronic postcards. (T)Listening factoid #1Jeff Hancock, a scientist at Cornell University, asked 30 students to keep a communication diary for a week. The students wrote down the numbers of conversations they had either face-to-face or on the telephone and the number of e-mail exchanges they had, both regular e-mails and instant messages, that lasted more than 10 minutes. They also wrote down the number of lies they had told in each conversation or e-mail exchange. When Jeff Hancock analyzed the students’ communication records, he found that lies made up 14 percent of e-mails, 21 percent of instant messages, 27 percent of face-to-face conversations, and 37 percent of phone calls.His findings surprised some psychologists, who thought it would be easier to lie in e-mail than in real-time conversations. One explanation is that people are less likely to lie when there will be a record of their lies, such as in an e-mail.Listening factoid #2If you have an e-mail account, you have no doubt been spammed. That is, you have received unsolicited e-mail from someone you don’t know, someone who is usually trying to sell you something!Most people say that they hate spam. For many people, spam mail is just a nuisance, but for businesses it’s very expensive, as their employee waste considerable working time going through and deleting span. According to Message Labs, a company that provides e-mail security, 76% of the world’s e-mail is spam and it costs businesses approximately $12 billion dollars a year. According to a survey by Commtouch Software, another anti-spam company, in the last few months the number of spam attacks increased by 43%. Their report predicts that within two years, 98% of all e-mail will be spam!Chapter 5 Language: How Children Acquire TheirsWhat I’d lie to talk to you about today is the topic of child language development. I know that you all are trying to develop a secon d language, but for a moment, let’s think about a related topic, and that is: How children develop their first language. What do we know about how babies develop their language and communication ability? Well, we know babies are able to communicate as soon as they are born―even before they learn to speak their first language. At first, they communicate by crying. This crying lets their parents know when they are hungry, or unhappy, or uncomfortable. However, they soon begin the process of acquiring their language. The first state of language acquisition begins just a few weeks after birth. At this stage, babies start to make cooing noises when they are happy. Then, around four months of age they begin to babble. Babies all over the world begin to babble around the same age, and they all begin to make the same kinds of babbling noises. Now, by the time they are ten months old, however, the babbling of babies from different language backgrounds sounds different. For example, the babbling of a baby in a Chinese-speaking home sounds different from the babbling of a baby in an English-speaking home. Babies begin a new stage of language development when they begin to speak their first words. At first, they invent their own words for things. For example, a baby in an English-speaking home may say “baba〞for the word “bottle〞or “kiki〞for “cat.〞In the next few months, babies will acquire a lot of words. These words are usually the names of things that are in the baby’s environment, words for food or toys, for example. They will begin to use these words to communicate with others. For example, if a baby holds up an empty juice bottle and then says “juice,〞to his father, the baby seems to be saying, “I want more juice, Daddy〞or “May I have more juice, Daddy?〞This wor d “juice〞is really a one-word sentence.Now, the next stage of language acquisition begins around the age of 18 months, when the babies begin to say two-word sentences. They begin to use a kind of grammar to put these words together. The speech they produce is called “telegraphic〞speech because the babies omit all but the most essential words. An English-speaking child might say something like “Daddy, up〞which actually could mean “Daddy, pick me up, please.〞Then, between two and three years of age, young children begin to learn more and more grammar. For example, they begin to use the past tense of verbs. The children begin to say things such as “I walked home〞and “I kissed Mommy.〞They also begin to overgeneralize this new grammar rule and make a log of grammar mistakes. For example, children often say such thins as “I goed to bed〞instead of “I went to bed,〞or “I eated ice cream〞instead of “I ate ice cream.〞In other words, the children have learned the past tense rule for regular verbs such as “wal k〞and “kiss,〞but they haven’t learned that they cannot use this rule for all verbs. Some verbs like “eat〞are irregular, and the past tense forms for irregular verbs must be learned individually. Anyway, these mistakes are normal, and the children will soon learn to use the past tense for regular and irregular verbs correctly. The children then continue to learn othergrammatical structures in the same way.If we stop to think about it, actually it’s quite amazing how quickly babies and children all over the world learn their language and how similar the process is for babies all over the world.Do you remember anything about how you learned your first language during the early years of your life? Think about the process for a minute. What was your first word? Was it “mama〞or maybe “papa〞? Now think also about the process of learning English as a second language. Can you remember the first word you learned in English? I doubt that it was “mama.〞Now, think about some of the similarities and differences i nvolved in the processes of child and adult language learning. We’ll talk about some similarities and differences in the first and second language learning processes tomorrow. See you then.PostlisteningA. The Comprehension Check1. Recognizing Information and Checking Accuracy1. At what age do babies begin to communicate? (a)2. Which of the following is an example of “telegraphic〞speech? (b)3. At what age do children begin to use the past tense? (c)4. At four months of age the babbling of babies sounds the same all over the world. (T)5. A baby’s first words are usually words that he or she inverts. (T)6. A child uses only vocabulary and no grammar before about two years of age. (F He/she actually used a kind of grammar in making two-word sentences at about 18months of age.)7. Children probably say “I goed〞instead of “I went〞because they hear their parents say this. (F Children say “I goed〞instead of “I went〞because they are overgeneralizing the grammar rule for the regular past tense verbs to the irregular verb “go.〞)Listening Factoid #1Have you ever wondered about what the world's original language was? Or whether children would begin to speak if they never heard language? Well, more than 2,500 years ago, an Egyptian pharaoh asked himself the same questions. He had the idea that children who didn't hear adults speaking any language would begin to speak the world's "original language." So he had two newborn babies of poor parents taken away from them. He gave the babies to a shepherd to take care of. No one was allowed to speak to them. About two years later, the shepherd reported to the pharaoh that the children were making a sound like "bekos." This sound "bekos" sounded like the word for bread in the Phrygian language, so the pharaoh concluded that Phrygian was the original language in the world. There was only one problem with the pharaoh's conclusion. He overlooked the fact that "bekos" sounded very much like the noise that sheep make!Listening factoid #2Do you know that grownups use baby talk? Why? To help babies learn to speak David Sacks, a linguist, says that, "babies in their first year of life learn to speak-first in baby talk, then with the rudiments of genuine vocabulary-by imitating the speech sounds they hear around them. (Often these sounds are addressed to the baby in an exaggerated, singsong form; for example, "How did you sleeeep? " which apparently helps the child to learn.) But some scholars have theorized that language in the nursery is partly a two-way street and that certain family-related words in English and other tongues were formed originally-perhaps prehistorically-in imitation of baby talk. Such words are easy for babies to pronounce. The parent will say to the baby, "Say dada" and so the word "dada" retains a secure place in the language. What are these words that are easy to say? While the words vary from language to language, in English they are some of the "ba," "da," "ma," and “pa" words.The earliest speech sounds out of an infant's mouth, sometimes as early as the second month of life, might typically be pure vowels. The sounds "ah," "ee," and "oo" are said to predominate among babies all over the world, with "ah " as the earliest and most frequent sound. The infant's next step, usually begun before four months of age, is to float a consonant sound in front of the vowel: "ma-ma-ma," the sound of pure baby talk.Chapter 6 Hydroponic Aquaculture: How One System WorksThe growing of plants without soil has developed from experiments carried out to determine what substances (like soil and water) make plants grow. Growing plants in water( rather than in soil) --- in other words, hydroponics--- dates back many more years than you might think. Scientists believe that hydroponics or aquaculture is at least as ancient as the pyramids of Egypt. Scientists also know that a primitive form of aquaculture has been used in the region of Kashmir for centuries. In fact, scientists believe hydroponic growing actually preceded soil growing. They even believe that using hydroponics as a farming tool started in the ancient city of Babylon with its famous hanging gardens. These hanging gardens were probably one of the first successful attempts to grow plants hydroponically.However, returning to more modern times, researchers at the University of the Virgin Islands have developed a system of hydroponic aquaculture that is both simple and low cost. The system uses gravity to create recirculating water systems in which fish are raised and vegetables are grown. Let me take a minute to explain the process of how this particular system of hydroponic aquaculture works on the island of St. Croix in the Virgin Island.To start with, rainwater is collected in a large 3,000-gallon tank. This tank is located on the highest point of the island. The tank is so large that it measures about 12 feet in diameter. Once the tank is filled with rainwater, fish are added to the tank and subsequently raised in a large tank. So, first, the researchers collect rainwater in a large tank, then they add fish; the fish swim around and excrete waste into the water.The next step in the process happens in this way. The rainwater collected in the large。
高级英语视听说教程1recapping
Unit 1Chapter 1 Napoleon¡¡¡¡Napoleon, born in 1769 in Corsica, was a French soldier who became emperor of the French Empire. He was sent to the military school in France at the age of 10. Actually, Napoleon was not very excellent in most of his subjects but mathematics and military science. When 16, he enrolled in the French army. In that year, he began his military career that brought him fame, power, riches, and, finally, defeat. Napoleon was promoted to the general of the French army at the very young age of 24. a few years later, he became the emperor of the French Empire. Napoleon was really an outstanding military leader and his soldier was extremely loyal to him. Consequently, he gained lots of victories. Once he took control of most of the Europe. However, he was battled by many countries including England, Russia and Austria. He was defeated when attacked Russia. In this campaign he lost most of his army.¡¡¡¡ In 1821, Napoleon, the great conqueror, died alone, abandoned by his family and friends. And he was only 51 years old when died. Chapter 2 PompeiiMore than 2000years ago, Pompeii was a very beautiful city, located on the Bay of Naples. A large number of wealthy Romans spent their summers in this city, to flee the metropolitan noise and heat, same as the modern people do.In 79 CE, a young boy came to visit his uncle in Pompeii. One day, the young boy was looking into the sky. He saw a very large dark cloud rising high into the sky. Rock and ash overflew through the air. What the young boy found was the eruption of volcano, Vesuvius. Even worse, the city of Pompeii lay at the foot of Vesuvius.At the first eruption, about 18000 people were able to escape the terrible catastrophe, to escape death. Unluckily, there were still over 2000 people dead, buried alive under the volcanic ash. The explosion terribly lasted for three days. When the explosion was over, Pompeii was covered by 20feet of volcanic rock and ash. The city of Pompeii was buried and forgotten for 1700 years.It was not until in 1748 that an Italian farmer discovered a part of the city of Pompeii. Before long, archaeologists set out to excavate in the area. As time passed, plenty of th city was uncovered. Nowadays, tourists around the world come to visit the ruins of Pompeii.Unit 2Chapter4 The InternetThe process that information leaves one computer to another computer through networks relies on routers, specialized computers. Their job is to conduct the informant through the networks. Firstly, the information is separated into very small packets, with the address ofthe sender and of the receiver, and the information on how to replace the packets together. Then, the packets are packed off via the Internet. Thirdly, when a packet arrives at a router, the router gets the destination address and then decides the best route to reach the destination for the packet. All the packets might reach the destination in the same route or in different routes. Finally, all packets are placed in to the correct order, when they reach their destination.Unit 3Chapter7 A Tidal WaveMany scientists call tidal wave tsunami, which is the meaning of storm wave in Japanese. A tidal wave is a vey big and fatal wall of water that dashes in from the sea toward the shore. Compared with true tide, which is the regular rise and fall of ocean water at certain time each day, a tidal wave comes up very abruptly and unexpectedly. A tidal wave is caused by an under-water earthquake, called seaquake, the word ¡°sea¡± which means ocean, and the word ¡°quake¡± which means ¡°shake¡± or ¡°tremble¡±. During a tidal wave, the ocean floor shakes and trembles and sometimes shifts. The shifting produces the tidal wave that removes across the ocean at a rapid clip.Tidal waves have killed many people in the past. Nowadays, scientists use a seismograph to predict when a tidal wave will attack land. It is out of the question that it can stop a tidal wave, but it is possible to warn people that a tidal wave is coming, which can save many lives. Unit4Chapter 11 Lincoln and KennedyKennedy and Lincoln were different in living era, family and education backgrounds. Kennedy was born in 1917, lived in the 20th century. He came from a wealthy family which provided him the chance to go to expensive private schools, and graduate from Harvard University. Lincoln was born in 1809 and lived in the 19th century. His family was not rich so that he attended school only one year. But he taught himself law, and then became an outstanding lawyer.However, there are also interesting similarities in their lives. Lincoln began his career as a congressman, so did Kennedy. Lincoln was elected to the House in 1847, and Kennedy was in 1947. It was just 100 years apart. In addition, Lincoln was elected president in 1860, and Kennedy was in 1960. It was also just 100 years apart. Furthermore, they both were president during the period of civil ferment. Lincoln was president during the American civil war, and Kennedy was during the civil rights demonstration.Another interesting similarity was that they both were assassinated while in office. More impressively both of them were shot when they were sitting next to their wives. At last, these two outstanding Americans both had a marvelous impact on the social and political lifeand the imagination of the American people.。
学术英语视听说1听力原文
学术英语视听说1听力原文Lesson1、1-1-4Lecturer:Today, I am going to talk to you about one of the most im portant historical figures in European history-Napoleon BonaparteLet's start by talking about his early life. Napoleon was born in 1769 on the island of Corsica. When he was only 10 years old, his father sent him to military school in France. Napoleon was not a very good student in most of his classes, but he excelled in mathematics and in military scienceWhen Napoleon was 16 years old, he joined the french army In that year, 1785，he began the military career that would bring him fame, power, riches, and finally, defeat. After eight years in the army, Napoleon became a general. He was only 24.Napoleon had many victories on the battlefield but he also became involved in French law and politics. And in 1804 at the age of 35，he became the first emperor of france.Napoleon had many victories on the battlefield, but he also became involved in French law and politics. And in 1804 at the age of 35，he became the first emperor of france Napoleon was many things. He was, first of all, a brilliant military leader. his soldiers were ready to die for him. as a result, Napoleon won many military victories. At one time hecontrolled most of Europe, but some countries, including England, Russia, and Austria, fought fiercely against Napoleon His defeathis end- came when he decided to attack russia In this military campaign against Russia, he lost most of his army .The great French conqueror died alone, deserted by his famil and his friends. The year was 1821，and Napoleon was only 51Lesson2、1-2-4Lecturer:The lecture for th is class is a b out the city of pom peii and the natural disaster that occurred there almost 2,000 years ago .Today many rich people w ho live in large m etropolitan areas such as beijing, Paris, and new york leave the city in the summer. They go to the m ountains or to the seashore to escape the city noise and heat. two thousand years ago, wealthy Rom ans did the sa me thing. They left the city of rom e in the summer. many of these wealthy rom ans spent their sum mers in the city of Pom peii, a beautiful city located on the bay of Naples, on the mediterranean Sea.In the sum mer of the year 79 Ce, a young rom an boy w ho later became a very fa m ous rom an historian w as visitin g h is uncle in Pompeii. The boy's name was pliny the younger.One day pliny w as loo king up at the sky. He saw a frightening sight. It w as a very large dark cloud. This b lack cloud rose hig h into the sky.What Pliny saw was the eruption of the volcano called Mount vesuvius. Rock and ash flew through the air. the city of Pom peii was at the foot of mount vesuvius When the volcano first erupted, many people were a ble to get out of the city and escape death. In fact, 18,000 people escaped the terrible disaster. U nfortunately, there was not enough time for everyone to escape. More than 2,000 people died. These unlucky people were buried alive under the volcanicash. The eruption lasted for about three days.When the eruption w as over, Pom peii w as buried under 20 feet of volcanic rock and ash. the city of Pom peii w as forgotten for alm ost 1,700 years.In the year 1748 an Italia n farmer was digging on his farm. As he was digging, he uncovered a part of a wall of the an cient city of Pompeii. Soon, archaeologists began to dig in the area. as time went by, much of the a ncient city of Pompeii w as uncovered. today tourists come from all over the world to see the ruins of the fa m ous city of pompeii. Lesson3、1-3-4Lecturer:I'd like to talk to you today about Steve Jobs. Jobs was someone who changed the world, because he changed the way people act every single day.Jobs was born in 1955. He grew up in California, in an area that later became known as the Silicon valley. When he was about 14 years old, hebecame friends with Stephen Wozniak Wozniak was what people in those days called an electronics whiz kid. He liked to design and build his own electronic equipment.In 1975，Wozniak started designing a personal computer. This at a time when nobody owned personal computers in their homes. Jobs was young. He was only 20. But even then he had a sharp business brain. Jobs convinced Wozniak that they could build these personal computers in his garage and sell them. a year later, Jobs and wozniak founded the apple computer Company, and started building and selling personal computers.When their apple ii computer went on the market in 1977，it became a huge success Suddenly there was a mass market for a computer that people could buy at a store and use sitting in their own homes The apple ll became the world's first mass produced personal computer, and by the age of 25，Steve Job was a millionaire.Jobs was brilliant in many ways, but he was not always very good at working with other people. He needed everything to be perfect, and this caused problems at Apple. In 1985，then, Jobs left Apple and started a new computer company and soon after he also went into business with a company called Pixar Pixar was a company trying to develop a system for using CGI-computer-generated imagery to be used in animated films And Jobs was just the person to help them.In 1995. Pixar released the movie tov story It was the first full-length, computer-generated, animated film. It was a big hit and Pixar became a very, very profita ble company and steve Jobs became a very, very rich man a billionaire in fact.In the 10 years after leaving apple jobs learned a lot about working with people and running a company. So when he returned to apple in 1995. he made many changes.Without Jobs, Apple was not doing so well. But Jobs had a also wanted them to be beautiful objects that people would e vision. He didn t only want personal computers to be useful, h enjoy looking at and using. In 1998，Apple introduced the imac a new desktop computer and the next year, the iBook, a new laptop computer. People thought both were very attractive and they immediately became very popular, and apple became profitable company again.But Steve Jobs wasnt finished. He had an even bigger vision He believed that personal computers would become the center the hub, of people's digital lives. So in 2001 Jobs introduced Apple's"digital hub"strategy He told the world that the computer would become the hub of all their electronic equipment. You could connect your camera, your music player and your video recorder to the computer and manage all your videos, photos, and music using iTunes, iMovie, iPhoto, and other apple programs, or"apps "Over the next 10 years, apple createdproducts that made jobs vision a reality. In 2001，the company introduced the iPod, which quickly became the most popular digital music player. In January 2007，Jobs introduced the iPhone and suddenly your phone became like a mini computer. It was like having an iPod, a camera, and a phone all in one device that you could hold in your hand. Then three years later he released the iPad onto the market. This really was a small, light computer that you could hold in your hand.And to use it all you had to do was touch the screen.Jobs'final vision before he died in Octo ber 2011 was Apple iCloud This is a system that allows apple users to store and manage their data and applications, not in their computer, but over the internet.Jobs may be gone, but there is no question that his vision lives on Jobs was someone who changed the world, not just for our own time, but maybe, who knows, for all time.Lesson4、1-4-4Lecturer:Let's talk a little today a out how roller coasters work and thephysics in volved in a ride on aroller coaster. I'm sure many of you have taken a ride on a roller coaster Person ally, I don't ever want to ride on one again. When i was young, my sister took me on a roller coaster, and I never forgot that frigh te n in g experience.A simple roller coaster consists o f a frame with a track on it .The track is very much like a train track. Th is track goes over a serie s of hillsand around curves following a path that ends at the sam e p lace it started, a train of cars travels around on th is track, very fast. the cars have two sets of w heels. 0 ne set of w heels rolls on top of the track and the other set of w heels rolls below the track the w heels below the track are there to keep the fa stm oving cars fro m co m in g o ff th e track. Roller- coaster cars, as you prob ably know, d on't have any m otors or es In stead, a ch ain pulls the cars up the first, tallest and steepest, h ill. A nd th isis how the ride begin s then at the top of the hill, the ch ain com es off th e cars, and gra v ity takes over. Gravity pushes the cars dow n the other sid e of th e h ill. T he taller a nd steeper the first h ill is, the fa ste r th e rid e willbe, and the farther the cars willtrave l.As the cars roll downhill, they gain speed. When they reach the botto m of the first h ill, the cars have enough speed a d e nergy to send the m up the next hill. A s th e cars n ear the top of the second hill, they begin to slow down. but then, th e cars reach the top of th at hill and start down the other sid e, a n d gravity again pushes them tow ard the ground. T his process repeats on each hill.OK, so let's go over th is process a g ain. First, the cars are u led b y a ch ain up th e first, h ig h est h ill. Then they go d ow n a very steep slope At th is point, there is enough energy to pull the cars up and over the next hill. a gain, w hen they reach the bottom of that hill, there is enough energy to clim b the next h ill. T he roller-coaster cars lose energy as therid e contin ues so the hills have to be sm aller toward the end of the track F in ally, we roll to a stop on ground level, rig ht w here we began. Tom orrow we will talk about the forces that press on our bod ies and keep us in our seats w hen the cars of a roller coaster travel in a loop th at puts us up side down.Lesson5、1-5-4Lecturer:What I'd like to talk to you about today is child language development i know that you all are trying to learn a second language, but for a moment, lets think about a related topic:How children learn their first language What do we know about how babies develop their language and communication ability？Well, we know babies are able to communicate as soon as they are bom-even before they learn to speak. At first, they communicate by crying. This crying lets their parents know when they are hungry, or unhappy, or uncomfortable. However, they soon begin the process of acquiring language The first stage begins a few weeks after birth. At this stage babies start to make cooing noises when they are happy. Then, at around four months they begin to babble Babies all over the world begin to babble around the same age and they all begin to make the same kinds of babbling noises. by the time they are ten months old however the babbling of babies from different language backgrounds sounds different. For example, the babbling of a baby in a Chinese-speaking home sounds different from the babbling of a baby inan English-speaking home.Babies begin a new stage of language development when they start to speak their first words. At first, they invent their own words for things. For example, a baby in an english speaking home may say"baba"for the word ball or" kiki"for These words are usually the names of things that are in the cat. In the next few months, babies will acquire a lot of words baby s environment, words for food or toys, for example.They will begin to use these words to communicate with others. For example, if a baby holds up an empty juice cup and says "juice, the baby seems to be saying, I want more juice"or May i have more juice？This word juice is really a one-word sentence.The next stage of language acquisition begins around 18months, when babies begin to say two-word sentences. They produce what is called"telegraphic" gether. The babies use a kind of grammar to put words speech, meaning they leave out all but the most essential words. an English-speaking child might say something like"Daddy, up, which actually means"Daddy, pick me up, please. Then, between two and three years of age, children learn more and more grammar. For example, they begin to use the past tense of verbs. In other words, they learn the rule for making the past tense of many verbs. The children begin to say things such as "I walked home" and"I kissed Mommy. They also overgeneralize this new grammar rule and make a lot of mistakes.For example children often say such things as"i goed to bed"instead of"I went to bed, or"leated ice cream" instead of"I ate ice cream In other words, the children have learned the past-tense rule for regular verbs such as walk and kiss, but they haven t learned that they cannot use this rule for all verbs Some verbs like eat are irregular and the past tense forms for irregular verbs must be learned individually. anyway these mistakes are normal. The children will soon learn to use the past tense for regular and irregular verbs correctly. They then continue to learn other grammatical structures in the same way.If we stop to think about it, it' s quite amazing how quickly children all over the world learn their language. It's also amazing how similar the process is for babies all over the world. You probably dont remember anything about how you learned your first language. But now that you' ve learned learning a first and secon d language may be similar and ss of something about the process, think about how the proc different. After class, why not make a list of some similarities and differences in the processes of child and adult lar learning. Then we'll talk about it next time we meed .Lesson7、1-7-4Lecturer:When people think about a robot, they often picture a machine that looks something like a human being. However, that' s not always the case！Most robots do not look much like a human being at all.They look like machines, because that's what most of them are industrial machines. Today, I'm going to talk mostly about industrial robots used in industry. These are robots that do work that for humans would be physicall demanding, repetitive, dangerous, or very boring.Most industrial robots work on an assembly line in a factory.For example, a robot might put lids on jars of fruit or stack boxes for shipping. In a car factory, robotic arms on th assembly line join the parts of the car together Other robots tighten the bolts on the cars wheels or paint the car. There are thousands of robots putting cars together in auto assembly plants. These robots are very precise when repeating a task. For example, they always tighten bolts with the same exac amount of force. They always move a heavy engine to exactly where it should be. and they always put a hole in the exact same place in every car door, hour after hour. These areexamples of robots doing the work humans could do, but the robots are doing the work more efficiently and precisely.So, just how do robots work？To do its job, a robot first needs a control system. This control system directs the robots mechanical parts. The control system of a robot is, so to speak, the robot' s"brain "So how does a robot "learn"which action to do first and which of its moving parts needs to do that action？The robot learns its job with the help and guidance of a human being.To teach an industrial robot to do something, first a person must use a handheld computer The computer is used to guide the robot's"arm and hand"through the motions it needs to do. Then the rob ot stores the exact movements in its computer memory. The robot has sensors to gather information. So now, the robot will use its sensors to direct its actions. The robot"tells"its moving parts what to do and then it performs the action. For example, to pick up and move a box, the robot first finds the box. next it decides the weight of the box. Then it decides how much force is needed to lift and move the box. and finally, it finds the correct place to put the box down. It repeats the process over and over until it is turned off It does the same job until it is given a new job and new program to follow.Some scientists think that rob ots of the future will be smarter than todays robots. They may also look more human like, or even animal-like. In fact, they may work and"think more like humans do. The industrial robots we've been talkin about so far today are automatic robots. They are known as automatic robots because they are programmed to follow a specific series of movements. Usually, they have parts that move, but they really don t travel around On the other hand, an autonomous machine can change its behavior in relation to its surroundings. For example, an autonomous robot with wheels or legs to move around can change direction when it senses that there is something in its way. arobot such as Hondas famous asIMo can detect the movements of people nearby. It can move to avoid bumping into someone coming toward it. asimo can even learn to dance by following themovements of a dancer next to it i don t know whether or when people will welcome autonomous machines or human-like robots. i guess that we will need to think about that in the robo-doctor, robo-teacher, robo-pet, or even our robo-Rriend future, Well need to think about how we will interact with or Think about that when you're doing your homework this evening. Would a robo-friend help you do your homework？。
(完整word版)视听说听力原文lesson1-13
Lesson 1 NapoleonToday, I’m going to talk to you about one of the most important historical figures in European history: Napoleon Bonaparte. Let ’s start by talking about his early life. Napoleon was born in 1769 on the island of Corsica. When he was only 10 years old, his father sent him to military school in France. Napoleon was not a very good student in most of his classes, but he excelled in mathematics and military science. When he was 16 years old,he joined the French army. In that year 1785,he began the military career that would bring himfame ,power,riches and finally defeat. Napoleon became a general in the French army at the young age of 24. Napoleon had many victories on the battlefield but he also became involved in French law and politics. And in 1804, at the age of 35,he became the first emperor of the France.Napoleon was many things. He was, first of all, a brilliant military leader. His soldiers were ready to die for him. As a result, N.won many military victories. At one time he controlled most of Europe, but some countries, including England, Russia, and Austria fought fiercely against him. His defeat —“his end”came when he decided to attack Russia. In this military campaign against Russia, he lost most of his army.The great French conqueror died alone – deserted by his family and friends in 1821. Napoleon was only 51 years old when he died.=========================================================== Lesson 2 PompeiiThe lecture for this class is about the city of Pompeii. A natural disaster occurred there almost 2000 years ago.Today many rich people who live in large metropolitan areas such as Beijing, Paris and New York leave the city in the summer. They go to the mountains or to the seashore to escape the city noise and heat.2,000 years ago, wealthy Romans did the same thing.They left the city of Rome in the summer. Many of these wealthy Romans spent their summers in the city of Pompeii, a beautiful city, located on the Bay of Naples.In the summer of the year 79 C.E., a young Roman boy who later became a very famous Roman historian was visiting his uncle in P.. The boy’s name was Pliny the Younger. One day Pliny was looking up at the sky. He saw a frightening sight. It was a very large dark cloud. This black cloud rose high into the sky. What Pliny saw was the eruption of the volcano called Mount Vesuvius.Rock and ash flew through the air. The city of P . was at the foot of Mt. V.. When the volcano first erupted, manypeople were able to get out of the city and to escape death. In fact, 18,000 people escaped the terrible disaster. Unfortunately, there was not enough time for everyone to escape. More than 2,000 people died. These unlucky people were buried alive under the volcanic ash.The eruption lasted for about 3 days. When the eruption was over, P . was buried under 20 feet of volcanic rock and ash. The city of P . was forgotten for almost 1,700 years.In the year of 1748 an Italian farmer was digging on his farm. As he was digging, he uncovered a part of a wall of the ancient city of P.. Soon archaeologists began to dig in the area. As time went by, much of the ancient city of P. was uncovered. Today tourists come from all over the world to see the ruins of the famous city of Pompeii.===========================================================Lesson 4 Roller CoasterLet's talk about the physics involved in a ride on a roller coaster. I'm sure many of you have taken a ride on a roller coaster. A simple roller coaster consists of a frame with a track on it. The track is very much like a train track, this track goes over a series of hills and around curves. It follows a path that ends at the same place it started. A trainof cars travels around on this track, very fast. The cars have two sets of wheels. One set of wheels rolls on top of the track, and the others set of wheels rolls below the track. The wheels below the track keep the fast moving cars from coming off the track, roller coaster cars as you probably know don't have any motors or engines. Instead, a chain pulls the cars up the first, tallest and steepy staff hill, this is how the ride begins. Then, at the top of the hill the chain comes off the cars and gravity takes over. gravity pushes the cars down the other side of the hill. the taller and steeper the first hill is, the faster the ride will be. And the farther the cars will travel. as the cars rolled downhill they gained speed. the cars have enough speed and energy to send them up the next hill. as the cars near the top of the second hill they begin to slow down. but then, the cars reached the top of that hill, and start down the other side. gravity again pushes them toward the ground. this process repeats on each hale. Okay, so let's go over this process again. first, the cars are pulled by a chain up the first highest hill. then they go down a very steep slope, at this point, there is enough energy to pull the cars up and over the next hill. when they reached the bottom of that hill, there is enough energy to climb the next hill, the roller coaster cars lose energy as the ride continues. so, the hills have to be smaller toward the end of the track, finally we roll to a stop on ground level right where we began.======================================================== Lesson 5 Language: How Children Acquire TheirsWhat I’d lie to talk to you about today is the topic of child language development. I know that you all are trying to develop a second language, but for a moment, let’s think about a related topic, and that is: How children develop their first language.What do we know about how babies develop their language and communication ability? Well, we know babies are able to communicate as soon as they are born,even before they learn to speak their first language. At first, they communicate by crying. This crying lets their parents know when they are hungry, or unhappy, or uncomfortable. However, they soon begin the process of acquiring their language. The first state of language acquisition begins just a few weeks after birth. At this stage, babies start to make cooing noises when they are happy. Then, around four months of age they begin to babble. Babies all over the world begin to babble around the same age, and they all begin to make the same kinds of babbling noises. Now, by the time they are ten months old, however, the babbling of babies from different language backgrounds sounds different. For example, the babbling of a baby in a Chinese-speaking home sounds different from the babbling of a baby in an English-speaking home. Babiesbegin a new stage of language development when they begin to speak their first words. At first, they invent their own words for things. For example, a baby in an English-speaking home may say ―baba‖for the word ―bottle‖or ―kiki‖for ―cat.‖In the next few months, babies will acquire a lot of words. These words are usually the names of things that are in the baby’s environment, words for food or toys, for example. They will begin to use these words to communicate with others. For example, if a baby holds up an empty juice bottle and then says ―juice,‖to his father, the baby seems to be saying, ―I want more juice, Daddy‖or ―May I have more juice, Daddy?‖This word ―juice‖is really a one-word sentence.Now, the next stage of language acquisition begins around the age of 18 months, when the babies begin to say two-word sentences. They begin to use a kind of grammar to put these words together. The speech they produce is called ―telegraphic‖speech because the babies omit all but the most essential words. An English-speaking child might say something like ―Daddy, up‖which actually could mean ―Daddy, pick me up, please.‖Then, between two and three years of age, young children begin to learn more and more grammar. For example, they begin to use the past tense of verbs. The children begin to say things such as ―I walked home‖and ―I kissed Mommy.‖They also begin toovergeneralize this new grammar rule and make a log of grammar mistakes. For example, children often say such thins as ―I goed to bed‖instead of ―I went to bed,‖or ―I eated ice cream‖instead of ―I ate ice cream.‖In other words, the children have learned the past tense rule for regular verbs such as ―walk‖and ―kiss,‖but they haven’t learned that they cannot use this rule for all verbs. Some verbs like ―eat‖are irregular, and the past tense forms for irregular verbs must be learned individually. Anyway, these mistakes are normal, and the children will soon learn to use the past tense for regular and irregular verbs correctly. The children then continue to learn other grammatical structures in the same way.If we stop to think about it, actually it’s quite amazing how quickly babies and children all over the world learn their language and how similar the process is for babies all over the world.Do you remember anything about how you learned your first language during the early years of your life? Think about the process for a minute. What was your first word? Was it ―mama‖or maybe ―papa‖? Now think also about the process of learning English as a second language. Can you remember the first word you learned in English? I doubt that it was ―mama.‖Now, think about some of the similarities anddifferences involved in the processes of child and adult language learning. We’ll talk about some similarities and differences in the first and second language learning processes tomorrow. See you then.===========================================================Lesson 7 RobotsWhen people think about a robot,they often picture a machine that look s something like a human being.However,that’s not always the case.Mo st robots do not look much like a human being at all,they look like machi nes because that’s what most of them are-industrial machines.Today,I’m going to talk mostly about industrial robots used in industry. These are robots that do work that for humans would be physically dema nding,repetitive,dangerous or very boring.Most industrial robots work on in an assembly line in a factory.For example,a robot might put liz on j ars of fruits or start boxesfor shaping.In a car factory,robotic arms on an assembly line join the parts of a car together;other robots tighten the b oats on the car’s wheelsor paint the car.There are thousands of robots p utting cars together in___plan.These robots are very precise when repe ating a task.For example,they always tighten boats with the same exact amount of force.They always move a heavy engine to exactly where it should be and they always put ahold in the exact same place in every car d oor hour after hour.These are examples of robots doing the work human s could do but the robots are doing the work more efficiently and precise ly.So,just how do robots work?To do its job a robot first needs a control s ystem.This control system directs the robots mechanical parts.The contr ol system of a robot is sort of speak--a robot brain.So how does a robot learn which action to do first and whi ch of its moving part needs to do that action?A robot learns its job with the help and guidance of a human being.To teach an industrial robot to do something,first a person must use a hand-held computer.The computer is used to guide the robot’s arm and hand through the motions it needs to do.Then,the robot stores exact movem ent in its computer memory.The robot has sensors to gather information ,so now the robot will use its sensors to direct its actions.The robot tells its moving part what to do and then it performs the action.For example, to pick up and move a box,the robot first finds the box,next it decides t he weight of the box.Then it decides how much force is needed to lift an d move the box,and finally,it finds the correct place to put the box dow n.It repeats the process over and over until it's turned off.It does the sa me job until it is given the job and new program to follow.Some scientists think that robots of the future will be smarter than today's robots.They may also look more human like or even animal like.In fact,they may wo rk and think more like humans do.The industrial robots we've been talki ng about so far today are automatic robots.They are known as automatic robots because they have program to follo w a specific series of ually,they have parts that move but t hey really don't travel around.On the other hand,an autonomous machi ne can change itsbehavior in relation to its surroundings.For example,an autonomous robot with wheelsor legs to move around can change direc tion when it senses that there are something in its way.A robot such as …can detect the movement of people nearby.It can move to avoid bump ing into ing toward it.Asthma can even learn to dance by followi ng the movements of a dancer next to it.I don't know whether or when people would welcome autonomousmachines or human like robots.I gu ess that we will not only think about that in the future.We need to think about how we will interact with our global doctor:robal teacher,robal p et,or even our robal friend.===========================================================Lesson 8 A Tidal WaveA tidal wave is a very large and very destructive wall of water that rushesin from the ocean towards the shore. Many scientists call these waves tsunami. In Japanese tsunami means “storm wave.” But do you know that tidal are not caused by storms and that they are not true tidal at all? A true tidal is the regular rise a waves and fall of ocean waters, at definite times each day, but a tidal wave comes rushing in suddenly and unexpectedly. A tidal wave is caused by an underwater earthquake. The word “seaquake” is made up of two words, the word “sea” which means “ocean” and the word “quake”. “To quake” means “to shake” or “to tremble.” When a seaquake takes place at the bottom of the ocean, the ocean floor shakes and trembles, and sometimes the ocean floor shifts. It is this shaking that produces the tidal wave. The tidal wave begins to move across the sea at great speed.Tidal waves have taken many human lives in the past. Today scientists can predict when a tidal wave will hit land. They use a seismograph to do this.A seismograph is an instrument that records the strength, the direction, and the length of time of an earthquake or seaquake. It is not possible to hold back a tidal wave, but it is possible to warn people that a tidal wave is coming. This warning can save many lives.===========================================================Lesson 9 Levels of LanguageToday I want to talk about levels of language usage. You probably have noticed that people express similar ideas in different ways, depending on the situation they are in. This is very natural. All languages have two general, broad categories, or levels of usage: a formal level and an informal level. English is no exception. I’m not talking about correct and incorrect English. What I’m talking about are two levels of correct English. The difference in these two levels is the situation in which you use a particular level. Formal language is the kind of language you find in textbooks, reference books such as encyclopedias, and in business letters. For example, a letter to a university would be in formal style. You would also use formal English in compositions and essays that you write in school. People usually use formal English when they give classroom lectures or speeches and at ceremonies such as graduations. We also tend to use formal language in conversations with persons we don’t know well or with people we have a formal relationship with, such as professors, bosses, doctors, friends of our parents’, strangers, etc. Informal language is used in conversations with colleagues, family and friends, and when we write personal notes or letters to close friends, as well as in diaries, etc. Formal language is different from informal language in several ways. However, today I’m going to talk only about a couple of ways. First of all, formal language tends to be more polite. Interestingly, it usually takes more words to be polite. For example, I might say to a friend or familymember, "Close the door, please", but to a stranger or someone in authority I probably would say "Would you mind closing the door" or "Excuse me, could you please close the door" Using words like "could" and "would" makes my request sound more polite, but also more formal. Another difference between formal and informal language is some of the vocabulary. There are some words and phrases that belong in formal language and others that are informal. Let me give you a couple of examples of what I mean. Let’s say "I’m just crazy about soccer!" But if I were talking to my supervisor or a friend of my parents’, I would probably say "I really enjoy soccer" or "I like soccer very much". Let’s say I’m telling someone some news I heard about the police arresting a criminal. To my friend I might say "The cops bagged the crook". To my parents’ friend I might say "The police arrested the thief".Although the line between formal and informal language is not always clear and although people are probably less formal today than in the past, it is useful to be aware that these two levels, or categories, do exist. The best way for a non-native speaker of English to learn the difference is to observe the different ways English speakers speak or write in different situations. Television newscasters, your college professors in class, your doctors in their offices, etc, will usually speak rather formally. However, your classmates, teammates, family members, friends, etc. will generally speak in an informal fashion. The difference can be learned over time byobserving and interacting with native speakers.===========================================================Lesson 10 Power: The Kinds People Use and Abuse John Mack, who is the author of a book about power, says that the need for a sense of personal power is one of the primary forces in human life. On the other hand, he also says that a feeling of powerlessness is one of the most disturbing of human emotions ―a feeling to be avoided at all costs. Just what is power?Psychologists define power as the ability to determine or to change the actions or behavior of other people. Psychologists are trying to identify different kinds of power so that they can better understand how people use these different kinds of power to gain control over other people. They are trying to understand how people manipulate other people for good and evil purposes. Psychologists have identified five basic types of power, and I’d like to talk about each of these briefly in the next few minutes.The first type of power is called information power. Some psychologist believe that information power is one of the mosteffective types of power and control. The person who has information that other people want and need, but do not have, is in a position of power. Why is this? Well, most people like to receive and have information. Having information increases a person’s own sense of power. People who provide information can manipulate those who do not have information. Often, when people receive information, they do not know that they are being manipulated by those who provided the information. The psychologist named Edwards says, for example, that newspapers provide a lot of information to their readers, and that these newspaper readers generally believe the information they read. Readers do not question the accuracy of the reports about world events they read in the newspapers.A second type of power is called referent power. For example, a person may want to behave like the members of a particular group, such as a soccer team ( or a group of classmates), or a person may identify with and want to be like a certain teacher, a friend, or say , a rock star. If you identify with another person, that person has power over you, and that person can influence your actions and behavior. Many people imitate and are controlled by the people they identify with. Let me give you a sad example ofthe use of this type of power for evil purposes. In the 1970s in Jonestown, Guyana, more than 900 people committed suicide when their religious leader Jim Jones told them to kill themselves. They did what he told them to do because he had referent power over them. They identified with him; they believe him, and they did what he told them to do. More recently a man named David Koresh controlled the lives and destinies of a small community of men, women, and children in Waco, Texas. Most people in his community died in a fire, along with their leader, during a confrontation with U.S. government agents.A third kind of power is classified as legitimate power. Government officials, according to Edwards, have a lot of legitimate power. When the government decides to raise taxes or make people go to war, most people will do what their government officials tell them to do. One psychologist reported on an experiment that showed an example of this type of power. In this experiment, a researcher asked people on the street to move away from a bus stop. When he was dressed as a civilian, few people moved away from the bus stop. When the researcher was dressed as a guard, most people moved away from the bus stop.The guard’s uniform seemed to give the researcher a look of legitimate power.A fourth kind of power is called expert power. An expert is a person who is very skilled in some area, such as sports, or who knows a lot about something, such as computers. Most people are impressed by the skills or knowledge of an expert. Some of these “experts” use their skills at playing sports or knowing about computers to gain power and influence ―and t o gain money or admiration, according to Edwards. In other words, they use their expertise to gain power.Finally, reward or coercive power is used by people who have the power to reward or punish another person’s actions or behavior. Giving a reward will change people’s behavior because it offers people a chance for gain. Giving a punishment may or may not cause the people to do what the powerful person wants them to do, but the changes may not last for a long time. The person who uses coercive power may also have to carefully watch thatthe less powerful person does, in fact, change his or her actions or behavior.To sum up, then, power may be gained in many ways. It may come from having information that other people want or need; it may come from being a referent for other people to identify with or to imitate; it may come from having an official, or legitimate, position of authority; it may come from having skills or expertise; or it may come from having the power to reward or punish people. We all exercise one or more of these various kinds of power over other people, and other people will try to exercise one or more of these kinds of power over us throughout our lives.==================================================Lesson11 Asian and African Elephants:Similarities and Diff erencesThe African and the Asian elephants are the largest land animals in the w orld.They are really enormous animals.The African and the Asian elepha nts are alike,or similar,in many ways,but there are differences between the2types of elephants,too.What are some of the similarities between the African and the Asian ele phant?Well,for one thing,both animals have long noses,called trunks. An elephant sometimes uses its trunk like a third hand.Both kinds of ele phants use their trunks to pick up very small objects and very large,heavy objects.They can even pick up trees with their trunks.For another thin g,both the African and the Asian elephants have very large ears,althoug h the African elephant’s ears are considerably larger.In addition,both animals are intelligent.They can be trained to do heavy work.They can also be trained to do tricks to entertain people.In other words,they both work for people,and they entertain people also.As I said before,the African and Asian elephants are alike in many ways, but they are also quite different,too.Let me explain what I mean.The Af rican elephant is larger and heavier than the Asian n eleph ants reach a height of about 10 feet, and African elephants reach about 13 feet tall.The African male elephant weighs between12,000and14,000pounds.I n contrast,the average Asian male elephant weighs between7,000and1 2,000pounds.So one is bigger than the other, but as you can see,both are still enormous animals.Another difference between the2kinds of elephants is the size of the ea n elephants have smaller ears than African elephants.The Africa n elephant has2very large teeth.These teeth are called tusks.The Asian elephanthowever sometimes does not have any tusks at all.The elephants differ i n color,too.The African elephant is dark gray in color while the Asian ele phant is light gray.Occasionally an Asian elephant is even white!The lastbig difference between the2 typesof elephants is their temperament.The Asian elephant is tamer than the African elephant, orin another way,the African elephant is much wilder than the Asian eleph ant.As a result,it’s more difficult to train the African elephant to perfor m tricks to entertain people.That’s why the elephants you see in the circ us are probably Asian elephants and not African elephants.Yes,there certainly are differences between the African and the Asian el ephants,but as I mention at the start of mytall,there is one big similarity between the2animals:they are both fasci nating and enormous animals.===========================================================Lesson 13 Lincoln and KennedyJohn F. Kennedy and Abraham Lincoln lived in different times and had very different family and educational backgrounds. K ennedy lived in the 20th century; Lincoln lived in the 19th cen tury. Kennedy was born in 1917, whereas Lincoln was born m ore than a hundred years earlier, in 1809. As for their family b ackgrounds, Kennedy came from a rich family, but Lincoln’s f amily was not wealthy. Because Kennedy came from a wealthy family, he was able to attend expensive private schools. He graduated from Harvard University. Lincoln, on the other hand, had only one year of formal schooling. In spite of his lack of f ormal schooling, he became a well-known lawyer. He taught himself law by reading law books. Li ncoln was, in other words, a self-educated man.In spite of these differences in Kennedy and Lincoln’s backgr ounds, some interesting similarities between the 2 men are ev ident. In fact, books have been written about the strange coin cidences in the lives of these 2 men. Take forexample ,their political careers. Lincoln began his political car eer in congress. Similarly, Kennedy also began his political car eer in congress. Lincoln was elected to the U.S. House of Repr esentatives in 1847, and Kennedy was elected to the House in 1947. So they were elected to congress exactly 100 years apart. Another interesting coincidence is that each man was e lected president of the United States in a year ending with the number 60. Lincoln was elected president in 1860, and Kenne dy was elected in 1960; furthermore, both men were presiden t during years of civil unrest in the country. Lincoln was presid ent during the American Civil War. At the time Kennedy became president,African-Americans were fighting for theircivil rights ,unrest took the form of civil rights demonstrations.Times change and it’s just over 15 more years,the United States elected its first African-American president Barack Obama. President Obama was elected in 2008 and…,but let me get back to talk about Lincoln and Kennedy.Another striking similarity between these 2 men was that, as y ou probably know, neither president lived to complete his ter m in office. Lincoln and Kennedy were both assassinated whil e in office. Kennedy was assassinated in 1963 inDallas, Texas, after only 1,000 days in office. Lincoln was assas sinated in 1865 a few days after the end of the American Civil War. It’s rather curious to note that both presidents were sh ot while they were sitting next to their wives.These are only a few examples of the unusual similarities in th e destinies of these 2 Americans – men who had a tremendou s impact on the social and political life in the United States an d the imagination of the American people.。
视听说听力原文之欧阳术创编
Lesson 1 NapoleonToday, I’m going to talk to you about one of the most important historical figures in European history: Napoleon Bonaparte. Let ’s start by talking about his early life. Napoleon was born in 1769 on the island of Corsica. When he was only 10 years old, his father sent him to military school in France. Napoleon wasnot a very good student in most of his classes, but he excelled in mathematics and military science. When he was 16 yearsold,hejoinedtheFrencharmy.Inthatyear1785,hebeganthemilitarycareer that wouldbringhimfame ,power,riches andfinallydefeat.NapoleonbecameageneralintheFrencharmyattheyounga geof24.Napoleonhad many victories on the battlefield but he also became involved in French law and politics. And in 1804, at the age of 35,hebecamethefirst emperoroftheFrance.Napoleonwas many things. He was, first of all, a brilliant military leader. His soldiers were ready to die for him. As a result, N.won many military victories. At one time he controlled most of Europe, but some countries, including England, Russia, and Austria fought fiercely against him. His defeat —“his end”came when he decided to attack Russia. In this military campaign against Russia, he lost mostof his army.ThegreatFrenchconquerordied alone – desertedbyhisfamilyand friends in 1821.Napoleonwasonly51yearsoldwhenhedied.================================================= ==========Lesson 2 PompeiiThe lecture for this class is about the city of Pompeii. A natural disaster occurred there almost 2000 years ago.Today many rich people who live in large metropolitan areas such as Beijing, Paris and New York leave the city in the summer. They go to the mountains or to the seashore to escape the city noise and heat. 2,000 years ago, wealthy Romans did the same thing.They left the city of Rome in the summer. Many of these wealthy Romans spent their summers in the city of Pompeii, a beautiful city, located on the Bay of Naples.In the summer of the year 79 C.E., a young Roman boy who later became a very famous Roman historian was visiting his uncle in P.. The boy’s name was Pliny the Younger. One day Pliny was looking up at the sky. He saw a frightening sight. It was a very large dark cloud. This black cloud rose high into the sky. What Pliny saw was the eruption of the volcano called Mount Vesuvius.Rock and ash flewthrough the air. The city of P . was at the foot of Mt. V.. When the volcano first erupted, many people were able to get out of the city and to escape death. In fact, 18,000 people escaped the terrible disaster. Unfortunately, there was not enough time for everyone to escape. More than 2,000 people died. These unlucky people were buried alive under the volcanic ash.The eruption lasted for about 3 days. When the eruption was over, P . was buried under 20 feet of volcanic rock and ash. The city of P . wasforgotten for almost 1,700 years.In the year of 1748 an Italian farmer was digging on his farm. As he was digging, he uncovered a part of a wall of the ancient city of P.. Soon archaeologists began to dig in the area. As time went by, much of the ancient city of P. was uncovered. Today tourists come from all over the world to see the ruins of the famous city of Pompeii.================================================= ==========Lesson 4 Roller CoasterLet's talk about the physics involved in a ride on a roller coaster. I'm sure many of you have taken a ride on a roller coaster. A simple roller coaster consists of a frame with a track on it. The track is very much like a train track, this track goes over a series of hills and around curves. It follows a path that ends at the same place it started. A train of cars travels around on this track, very fast. The cars have two setsof wheels. One set of wheels rolls on top of the track, and the others set of wheels rolls below the track. The wheels below the track keep the fast moving cars from coming off the track, roller coaster cars as you probably know don't have any motors or engines. Instead, a chain pulls the cars up the first, tallest and steepy staff hill, this is how the ride begins. Then, at the top of the hill the chain comes off the cars and gravity takes over. gravity pushes the cars down the other side of the hill. the taller and steeper the first hill is, the faster the ride will be. And the farther the cars will travel. as the cars rolled downhill they gained speed. the cars have enough speed and energy to send them up the next hill. as the cars near the top of the second hill they begin to slow down. but then, the cars reached the top of that hill, and start down the other side. gravity again pushes them toward the ground. this process repeats on each hale. Okay, so let's go over this process again. first, the cars are pulled by a chain up the first highest hill. then they go down a very steep slope, at this point, there is enough energy to pull the cars up and over the next hill. when they reached the bottom of that hill, there is enough energy to climb the next hill, the roller coaster cars lose energy as the ride continues. so, the hills have to be smaller toward the end of the track, finally we roll to a stop on ground level right where we began.========================================================Lesson 5 Language: How Children Acquire TheirsWhat I’d lie to talk to you about today is the t opic of child language development. I know that you all are trying to developa second language, but for a moment, let’s think about a related topic, and that is: How children develop their first language.What do we know about how babies develop their language and communication ability? Well, we know babies are able to communicate as soon as they are born,even before they learn to speak their first language. At first, they communicate bycrying. This crying lets their parents know when they are hungry, or unhappy, or uncomfortable. However, they soon begin the process of acquiring their language. The first state of language acquisition begins just a few weeks after birth. At this stage, babies start to make cooing noises when they are happy. Then, around four months of age they begin to babble. Babies all over the world begin to babble around the same age, and they all begin to make the same kinds of babbling noises. Now, by the time they are ten months old, however, the babbling of babies from different language backgrounds sounds different. For example, the babbling of a baby in a Chinese-speaking home sounds different from the babbling of a baby in an English-speaking home. Babies begin a new stage of language development when they begin to speaktheir first words. At first, they invent their own words for things. For example, a baby in an English-speaking home may say ―baba‖ for the word ―bottle‖ or ―kiki‖ for ―cat.‖ In the next few months, babies will acquire a lot of words. These words are usually the names of things that are in the baby’s environment, words for food or toys, for example. They will begin to use these words to communicate with others. For example, if a baby holds up an empty juice bottle and then says ―juice,‖ to his father, the baby seems to be saying, ―I want more juice, Daddy‖ or ―May I have more juice, Daddy?‖ This word ―juice‖ is really a one-word sentence.Now, the next stage of language acquisition begins around the age of 18 months, when the babies begin to say two-word sentences. They begin to use a kind of grammar to put these words together. The speech they produce is called ―telegraphic‖ speech because the babies omit all but the most essential words. An English-speaking child might saysomething like ―Daddy, up‖ which actually coul d mean ―Daddy, pick me up, please.‖ Then, between two and three years of age, young children begin to learn more and more grammar. For example, they begin to use the past tense of verbs. The children begin to say things such as ―I walked home‖ and ―I kisse d Mommy.‖ They also begin to overgeneralize this new grammar rule and make a log of grammar mistakes. For example, children often saysuch thins as ―I goed to bed‖ instead of ―I went to bed,‖ or ―I eated ice cream‖ instead of ―I ate ice cream.‖ In other wo rds, the children have learned the past tense rule for regular verbs such as ―walk‖ and ―kiss,‖ but they haven’t learned that they cannot use this rule for all verbs. Some verbs like ―eat‖ are irregular, and the past tense forms for irregular verbs must be learned individually. Anyway, these mistakes are normal, and the children will soon learn to use the past tense for regular and irregular verbs correctly. The children then continue to learn other grammatical structures in the same way.If we stop to thin k about it, actually it’s quite amazing how quickly babies and children all over the world learn their language and how similar the process is for babies all over the world.Do you remember anything about how you learned your first language during the early years of your life? Think about the process for a minute. What was your first word? Was it ―mama‖ or maybe ―papa‖? Now think also about the process of learning English as a second language. Can you remember the first word you learned in English? I doubt that it was ―mama.‖ Now, think about some of the similarities and differences involved in the processes of child and adult language learning. We’ll talk about some similarities and differences in the first and second language learning processes tomorrow. See you then.================================================= ==========Lesson 7 RobotsWhen people think about a robot, they often picture a machine that l ooks something like a human being. However, that’s not always the c ase. Most robots do not look much like a human being at all, they lo ok like machines because that’s what most of them are- industrial ma chines.Today, I’m going to talk mostly about industrial robots used in indu stry. These are robots that do work that for humans would be physica lly demanding, repetitive, dangerous or very boring. Most industrial robots work on in an assembly line in a factory. For example, a robot might put liz on jars of fruits or start boxesfor shaping. In a car facto ry, robotic arms on an assembly line join the parts of a car together; other robots tighten the boats on the car’s wheelsor paint the car. The re are thousands of robots putting cars together in ___ plan. These ro bots are very precise when repeating a task. For example, they alway s tighten boats with the same exact amount of force. They always mo ve a heavy engine to exactly where it should be and they always put ahold in the exact same place in every car door hour after hour. Thes e are examples of robots doing the work humans could do but the ro bots are doing the work more efficiently and precisely.So, just how do robots work? To do its job a robot first needs a cont rol system. This control system directs the robots mechanical parts. The control system of a robot is sort of speak--a robot brain. So how does a robot learn which action to do first and which of its moving p art needs to do that action? A robot learns its job with the help and g uidance of a human being. To teach an industrial robot to do somethi ng, first a person must use a hand-held computer. The computer is us ed to guide the robot’s arm and hand through the motions it needs to do. Then, the robot stores exact movement in its computer memory. The robot has sensors to gather information, so now the robot will us e its sensors to direct its actions. The robot tells its moving part what to do and then it performs the action. For example, to pick up and m ove a box, the robot first finds the box, next it decides the weight of t he box. Then it decides how much force is needed to lift and move th e box, and finally, it finds the correct place to put the box down. It re peats the process over and over until it's turned off. It does the same j ob until it is given the job and new program to follow. Some scientist s think that robots of the future will be smarter than today's robots. T hey may also look more human like or even animal like. In fact, they may work and think more like humans do. The industrial robots we' ve been talking about so far today are automatic robots.They are known as automatic robots because they have program to follow a specific series of movement. Usually, they have parts that m ove but they really don't travel around. On the other hand, an autono mous machine can change itsbehavior in relation to its surroundings. For example, an autonomous robot with wheelsor legs to move arou nd can change direction when it senses that there are something in its way. A robot such as …can detect the movement of people nearby. I t can move to avoid bumping into sb. coming toward it. Asthma can even learn to dance by following the movements of a dancer next to i t. I don't know whether or when people would welcome autonomous machines or human like robots. I guess that we will not only think ab out that in the future. We need to think about how we will interact wi th our global doctor: robal teacher, robal pet, or even our robal friend .================================================= ==========Lesson 8 A Tidal WaveA tidal wave is a very large and very destructive wall of water that rushes in from the ocean towards the shore. Many scientists call these waves tsunami. In Japanese tsunami means “storm wave.” But do you know that tidal are not caused by storms and that they are not true tidal at all? A true tidal is the regular rise a waves and fall of ocean waters, at definite times each day, but a tidal wave comes rushing in suddenlyand unexpectedly. A tidal wave is caused by an underwater earthquake. The word “seaquake” is made up of two words, the word “sea” which means “ocean” and the word “quake”. “To quake” means “to shake” or “to tremble.” When a seaquake takes place at the bottom of the ocean, the ocean floor shakes and trembles, and sometimes the ocean floor shifts. It is this shaking that produces the tidal wave. The tidal wave begins to move across the sea at great speed.Tidal waves have taken many human lives in the past. Today scientists can predict when a tidal wave will hit land. They use a seismograph to do this. A seismograph is an instrument that records the strength, the direction, and the length of time of an earthquake or seaquake. It is not possible to hold back a tidal wave, but it is possible to warn people that a tidal wave is coming. This warning can save many lives.================================================= ==========Lesson 9 Levels of LanguageToday I want to talk about levels of language usage. You probably have noticed that people express similar ideas in different ways, depending on the situation they are in. This is very natural. All languages have two general, broad categories, or levels of usage: a formal level and an informal level. English is no exception. I’m not talking about correct and incorrect English. What I’m talking aboutare two levels of correct English. The difference in these two levels is the situation in which you use a particular level. Formal language is the kind of language you find in textbooks, reference books such as encyclopedias, and in business letters. For example, a letter to a university would be in formal style. You would also use formal English in compositions and essays that you write in school. People usually use formal English when they give classroom lectures or speeches and at ceremonies such as graduations. We also tend to use formal language in conversations with persons we don’t know wel l or with people we have a formal relationship with, such as professors, bosses, doctors, friends of our parents’, strangers, etc. Informal language is used in conversations with colleagues, family and friends, and when we write personal notes or letters to close friends, as well as in diaries, etc.Formal language is different from informal language in several ways. However, today I’m going to talk only about a couple of ways. First of all, formal language tends to be more polite. Interestingly, it usually takes more words to be polite. For example, I might say to a friend or family member, "Close the door, please", but to a stranger or someone in authority I probably would say "Would you mind closing the door" or "Excuse me, could you please close the door" Using words like "could" and "would" makes my request sound more polite, but alsomore formal.Another difference between formal and informal language is some of the vocabulary. There are some words and phrases that belong in formal language and others that are informal. Let me give you a couple of examples of what I mean. Let’s say "I’m just crazy about soccer!" But if I were talking to my supervisor or a friend of my parents’, I would probably say "I really enjoy soccer" or "I like soccer very much". Le t’s say I’m telling someone some news I heard about the police arresting a criminal. To my friend I might say "The cops bagged the crook". To my parents’ friend I might say "The police arrested the thief".Although the line between formal and informal language is not always clear and although people are probably less formal today than in the past, it is useful to be aware that these two levels, or categories, do exist. The best way for a non-native speaker of English to learn the difference is to observe the different ways English speakers speak or write in different situations. Television newscasters, your college professors in class, your doctors in their offices, etc, will usually speak rather formally. However, your classmates, teammates, family members, friends, etc. will generally speak in an informal fashion. The difference can be learned over time by observing and interacting with native speakers.================================================= ==========Lesson 10 Power: The Kinds People Use and AbuseJohn Mack, who is the author of a book about power, says that the need for a sense of personal power is one of the primary forces in human life. On the other hand, he also says that a feeling of powerlessness is one of the most disturbing of human emoti ons ―a feeling to be avoided at all costs. Just what is power? Psychologists define power as the ability to determine or to change the actions or behavior of other people. Psychologists are trying to identify different kinds of power so that they can better understand how people use these different kinds of power to gain control over other people. They are trying to understand how people manipulate other people for good and evil purposes. Psychologists have identified five basic types of power, and I’d like to talk about each of these briefly in the next few minutes.The first type of power is called information power. Some psychologist believe that information power is one of the most effective types of power and control. The person who has information that other people want and need, but do not have, is in a position of power. Why is this? Well, most people like to receive and have information. Having information increases a person’s ownsense of power. People who provide information can manipulate those who do not have information. Often, when people receive information, they do not know that they are being manipulated by those who provided the information. The psychologist named Edwards says, for example, that newspapers provide a lot of information to their readers, and that these newspaper readers generally believe the information they read. Readers do not question the accuracy of the reports about world events they read in the newspapers.A second type of power is called referent power. For example, a person may want to behave like the members of a particular group, such as a soccer team ( or a group of classmates), or a person may identify with and want to be like a certain teacher, a friend, or say , a rock star. If you identify with another person, that person has power over you, and that person can influence your actions and behavior. Many people imitate and are controlled by the people they identify with. Let me give you a sad example of the use of this type of power for evil purposes. In the 1970s in Jonestown, Guyana, more than 900 people committed suicide when their religious leader Jim Jones told them to kill themselves. They did what he told them to do because he had referent power over them. They identified with him; they believe him, and they did what he told them to do. More recently a mannamed David Koresh controlled the lives and destinies of a small community of men, women, and children in Waco, Texas. Most people in his community died in a fire, along with their leader, during a confrontation with U.S. government agents.A third kind of power is classified as legitimate power. Government officials, according to Edwards, have a lot of legitimate power. When the government decides to raise taxes or make people go to war, most people will do what their government officials tell them to do. One psychologist reported on an experiment that showed an example of this type of power. In this experiment, a researcher asked people on the street to move away from a bus stop. When he was dressed as a civilian, few people moved away from the bus stop. When the researcher was dressed as a guard, most people moved away from the bus stop. The guard’s uniform seemed to give the researcher a look of legitimate power.A fourth kind of power is called expert power. An expert is a person who is very skilled in some area, such as sports, or who knows a lot about something, such as computers. Most people are impressed by the skills or knowledge of an expert. Some of these “experts” use their skills at playing sports or knowing about computers to gain power and influence ―and to gain money or admiration, according to Edwards. In other words, they use their expertise to gain power.Finally, reward or coercive power is used by people who have the power to reward or punish another person’s actions or behavior. Giving a reward will change people’s behavior because it offers people a chance for gain. Giving a punishment may or may not cause the people to do what the powerful person wants them to do, but the changes may not last for a long time. The person who uses coercive power may also have to carefully watch thatthe less powerful person does, in fact, change his or her actions or behavior.To sum up, then, power may be gained in many ways. It may come from having information that other people want or need; it may come from being a referent for other people to identify with or to imitate; it may come from having an official, or legitimate, position of authority; it may come from having skills or expertise; or it may come from having the power to reward or punish people. We all exercise one or more of these various kinds of power over other people, and other people will try to exercise one or more of these kinds of power over us throughout our lives.================================================ ==Lesson 11 Asian and African Elephants: Similarities and Differenc esThe African and the Asian elephants are the largest land animals in t he world. They are really enormous animals. The African and the Asi an elephants are alike, or similar, in many ways, but there are differe nces between the 2 types of elephants, too.What are some of the similarities between the African and the Asian elephant? Well, for one thing, both animals have long noses, called tr unks. An elephant sometimes uses its trunk like a third hand. Both ki nds of elephants use their trunks to pick up very small objects and ve ry large, heavy objects. They can even pick up trees with their trunks . For another thing, both the African and the Asian elephants have ve ry large ears, although the African elephant’s ears are considerably la rger.In addition, both animals are intelligent. They can be trained to do he avy work. They can also be trained to do tricks to entertain people. I n other words, they both work for people, and they entertain people a lso.As I said before, the African and Asian elephants are alike in many ways, but they are also quite different, too. Let me explain what I me an. The African elephant is larger and heavier than the Asian elephan t. Asian elephantsreach a height of about 10 feet, andAfrican elephants reach about 13 feet tall.The African male elephant weighs between 12,000 and 14,000 pounds. In contrast, the average Asian male elephant weighs between 7,0 00 and 12,000 pounds. So one is bigger than the other, but as you can see,both are still enormous animals.Another difference between the 2 kinds of elephants is the size of th e ears. Asian elephants have smaller ears than African elephants . Th e African elephant has 2 very large teeth. These teeth are called tusks . The Asian elephanthowever sometimes does not have any tusks at all. The elephants diff er in color, too. The African elephant is dark gray in color while the Asian elephant is light gray. Occasionally an Asian elephant is even white ! The last big difference between the 2 typesof elephants is their temperament. The Asian elephant is tamer than t he African elephant, orin another way, the African elephant is much wilder than the Asian el ephant. As a result, it’s more difficult to train the African elephant to perform tricks to entertain people. That’s why the elephants you see i n the circus are probably Asian elephants and not African elephants. Yes, there certainly are differences between the African and the Asia n elephants, but as I mention at the start of mytall, there is one big similarity between the 2 animals: they are both f ascinating and enormous animals.===========================================================Lesson 13 Lincoln and KennedyJohn F. Kennedy and Abraham Lincoln lived in different times and h ad very different family and educational backgrounds. Kennedy live d in the 20th century; Lincoln lived in the 19th century. Kennedy wa s born in 1917, whereas Lincoln was born more than a hundred years earlier, in 1809. As for their family backgrounds, Kennedy came fro m a rich family, but Lincoln’s family was not wealthy. Because Kenn edy came from a wealthy family, he was able to attend expensive pri vate schools. He graduated from Harvard University. Lincoln, on the other hand, had only one year of formal schooling. In spite of his lac k of formal schooling, he became a well-known lawyer. He taught hi mself law by reading law books. Lincoln was, in other words, a self-educated man.In spite of these differences in Kennedy and Li ncoln’s backgrounds, some interesting similarities between the 2 men are evident. In fact, books have been written about the strange coincidences in the lives o f these 2 men. Take forexample ,their political careers. Lincoln began his political career in congress. Similarly, Kennedy also began his political career in congr ess. Lincoln was elected to the U.S. House of Representatives in 184 7, and Kennedy was elected to the House in 1947. So they wereelected to congress exactly 100 yearsapart. Another interesting coincidence is that each man was elected p resident of the United States in a year ending with the number 60. Li ncoln was elected president in 1860, and Kennedy was elected in 19 60; furthermore, both men were president during years of civil unrest in the country. Lincoln was president during the American Civil War . At the time Kennedy became president,African-Americans were fighting for their civil rights ,unrest took the form of civil rights demonstrations.Timeschange and it’s just over 15 more yea rs,the United States elected its first African-American president Barack Obama. President Obama was elected in 2008 and…,but let me get back to talk about Lincoln and Kennedy.Another striking similarity between these 2 men was that, as you pro bably know, neither president lived to complete his term in office. Li ncoln and Kennedy were both assassinated while in office. Kennedy was assassinated in 1963 inDallas, Texas, after only 1,000 days in office. Lincoln was assassinat ed in 1865 a few days after the end of the American Civil War. It’s ra ther curious to note that both presidents were shot while they were si tting next to their wives.These are only a few examples of the unusual similarities in the desti。