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新视野大学英语(第三版)视听说第一册U校园答案

Unit 1 Traces of the past1-1Learning objectives1-2Sharing1The people in the podcast mainly talk about whether they go out a lot and what they did when they went out last night.2I have a 1)(busy) social life. I go out most nights after work with 2)(friends). Last night,I went out for a meal with an old friend from 3)(university) – it was really good to seeher. Tell me about your 4)(social life). Do you go out a lot?3ACEDBF4She went to a club and 1)(danced) all night.She had dinner in an Italian restaurant and enjoyed the 2)(view of the river) and lots of3)(fun) with the family.She went to the cinema and then met some friends for a 4)(drink) in town.She went to Westfield Shopping Center in the 5)(west)of London and enjoyed a6)(delicious meal) there.He went to a friend's 7)(house) in south London and had some fish and chips in front of the 8)(television / TV)6Yes, I go out a lot with my friends. After a long week of study, going out at weekends can help me relax, so I can go back to study with a refreshed mind. / No, I don't go outa lot because I have no time. I'm taking many courses at college, so I have to spendmost of my time studying.I like going to shopping malls. I also like going to the cinema and the theater.Sometimes I go to museums and art galleries, too.I went shopping with my best friend last weekend. After that we went to a café andhad a cup of coffee. Yes, I enjoyed it because I took a break from study and I had a good time with my best friend. / No, I didn't enjoy it because there were too many people in the store. Besides, it was so noisy in the café that my friend and I could hardly hear each other.1-3Listening1I admire my mother most. She loves my brother and me so much that she would do everything for us. At the same time, she always encourages us to be independent and try our best to do what we like. As a teacher, she has also set a good example for me.She has worked as a primary school teacher for about 30 years and she has never got tired of her work. She spends a lot of time helping her students, especially those with learning difficulties. I'm very proud of her. Live and work with pleasure – this is what I have learned from her.2 1. Baruti was born in the year (1962).2. He was the (fourth / 4th)child in a very big family.3. Baruti married his wife in (1990)4. Together they opened an orphanage in (1996)3Baruti was born in Johannesburg. His father was a 1)(teacher)and his mother 2)(cleaned houses)for rich people. When Baruti was in school, one of his friends 3)(lost)his parents and moved to an orphanage. Baruti 4)(visited)him and when he saw his life there, he decided to 5)(work)with orphans. Later he opened an orphanage with 6)(his wife).Baruti regards Mother Teresa as his hero and his favorite book is Long Walk to Freedom, the story of Nelson Mandela's life 7)(in his own words).4Mother Teresa's words tell us that small things can make a great difference. Few of us can do anything great, but we can all do small things with great love.My favorite book is Steve Jobs. The book is based on more than 40 interviews with Jobs conducted over two years as well as interviews with more than 100 family members, friends, foes, competitors, and colleagues. Jobs spoke honestly about the people he worked with and competed against. He encouraged the people he knew to speak honestly too. So through the book, readers can not only read about the life of the legendary Steve Jobs, but also have a genuine view of his personality that shaped his approach to business and his products.When I was seven years old, my parents bought a new wall clock with an owl inside. I was very curious about how the owl moved its eyes and gave out sound. One day, I took the clock off the wall, and took it apart with a screwdriver. After an hour, I still couldn't figure out how the clock worked, and I couldn't put all the parts together. I was scared. But when my father found what I had done, instead of scolding me, he praised me for my eagerness to learn. And he taught me how to assemble the clock.This experience made me love my father more. And more importantly, I fell in love with mechanics since then. That's why I chose mechanics as my major.1-4 Viewing1-5 Pronunciation1-6 Role-playing1Isabel: Hi, Marek. How was your weekend?Marek: OK. And yours? What did you do?Isabel: I went for a walk. 1)(It was great)!Marek: Who did you go with?Isabel: With my boyfriend, Diego. 2)(He's a football player / He is a football player).Marek: Oh. Where did you go?Isabel: By the river. 3)(It was really beautiful).Marek: That sounds good.2ACEGJ1-7 Presenting1-8M ore practice in listening1BABDD DBCD2DDBAThere are so many changes when a person comes to college. Some of the new college students may have been to camp or 1)(programs / programmes)away from home before, but for some it's the 2)(very)first time they've left home. That means having to make certain 3)(decisions)that they've never really had to make before.Besides some basic everyday activities, for example, eating and 4)(doing laundry), there are many more important matters, such as whom to become friends with. "And what happens if I don't do well on my first test? Does that mean I should change fields?"5)(Obviously), there are just so many issues new college students have to face. It's reallya jump from high school.It's such a change when they don't have any parents around. They need to make6)(choices)with their studies, and with their social lives. They need to learn how to actin the right way so that they can enjoy their social lives without 7)(ruining)their studies.This is very common to college students in the first year. It takes a little while for them to 8)(get used to)their college life and learn to balance their studies and social lives.There are a lot of 9)(opportunities)for students to try new things. There are so many new ways to meet other people on campus. If they find out it's not working for them, they can 10)(step back)and try something else. They should just give it a go! That's the way everybody learns to grow up.3BC DC1-9 Check & check1-10 Unit test1 The woman enjoyed the foods at Jenny's party very much.2 He was bored.3 Because Rob has found Suzie unfaithful.4 Her opinion towards love is influenced by her sister's experience.5 Dogs.6 She finds it difficult to answer.7 Her favorite Beatles' song from 1965.8 The hits chart from 1965.9 Every time he goes to a karaoke bar, he finds it one of few English songs available.10 A Rolling Stones' song.11 Their parents' wedding anniversary.12 To put away a dollar each day.13 Teaching.14 A savings account.15 A visit to Cancun.16) achievements17) specialized/specialized18) vast19) professional20) educated21) was familiar22) extensively23) elegantly24) a great deal25) BesidesUnit 2 A break for fun2-1Learning objectives2-2Sharing1The people in the podcast mainly talk about how often they go to the cinema and what films they saw last time. They also talk about their favorite films, actors, and actresses. 2I like going to the cinema a lot, but probably only get there about (once a month).2. (Not very often). But I do go occasionally.3. I go to the cinema, probably (once or twice)a month.4. I go to the cinema about (once a week)during the summertime ...5. I go, normally, probably (once every month)or two months, but it depends on thefilm.6. I go to the cinema about (once every fortnight).3I always like 1)(romantic) comedies. Slumdog Millionaire was a 2)(great)movie.2. ... probably 3)(recommend), er, the new Terminator movie. Er, that's once again filledwith 4)(action). Very exciting.3. I like old films. I ... I've a complete 5)(collection)of John Wayne and Charlton Heston ...And musicals, anything that's quite happy or adventurous, that takes me away from6)(real life). Those are the ones I watch.4. It's a James Bond film and I think the action 7)(scenes)are just absolutely8)(fantastic)in it.4CDAB6The Graduate. I like the movie because the music is fantastic. And I enjoy Dustin Hoffman's great performance, which shows many aspects of the hero's rich character.I prefer watching DVD movies at home because it saves both money and time. I havethe freedom to choose what I would like to watch. / I prefer going to the cinema because it provides better sound effects. Besides, with more people around, the atmosphere is much better than when I watch movies alone at home.My favorite movie star is Sandra Bullock. I like her because she is beautiful and her performance is natural. I love her warm smiles as well. Every time I see her smile, I couldn't help smiling too.2-3Listening1 C2blonde blue dark masculine3CADB4tallmasculine face / best-lookingblack hair / blackdark brown / dark brown eyesred hair / red grey / grey eyesgrey / grey eyesslimblonde hair / blondelovely5The man I like should be strong and fit, without a beard. And he should not have long hair. The woman I like most is someone who is slim and healthy. She should have long hair and big eyes. And I like girls who smile a lot. I believe everyone has something beautiful about them, regardless of age, race, gender, size, ability, etc. I don't think being lighter or slimmer equals beauty. Instead, I think the inner self counts a lot more than outer appearance. Virtues such as honesty, hard-working, and willingness to help make one a beautiful person. / Beauty is what we see and feel. So my idea of beauty is what is pleasing to the eyes. As long as it makes you feel good, it is beauty. So both inner qualities and body features are important factors to make one look beautiful. Of course, what one considers beautiful may not appear the same to someone else. That is why beauty standards are different from person to person, culture to culture andtime to time.The ideas of beauty have changed over the past several decades in China. Truly, on the one hand, many still stick to the idea that one's inner quality counts more than outer appearance. Honesty, hard-working, generosity, and kindness are considered inner beauty. On the other hand, more and more people think outer appearance is more important. Nowadays, many people, especially young people, hold some new ideas about beauty. For example, long straight black hair used to be thought as one feature of beauty, but now young people want to look stylish by having their hair curled and dyed. They follow the fashion trend and put on fashionable clothes and wear make-up. More people are afraid of not looking attractive enough. So they go on diet to look thinner and receive some cosmetic surgeries to look better. Still many others realize that it is important to live a healthy lifestyle and learn to love their own body for its uniqueness.I don't think it is wise to judge a person by his / her appearance because appearanceis superficial. Sometimes the appearance of a person may mislead your judgment when it doesn't match well with the inner part of that person. For example, an ordinary-looking person can be a scientist, a hero, or a great thinker. Just as the proverb goes, "Never judge a book by its cover." The greatness of a book lies in its content instead of its cover. So it is with a person. Instead of focusing only on one's appearance, we should get to know more about that person's education, life experiences and life attitude before we make any judgment.2-4 Viewing2-5 Pronunciation2-6 Role-playing1W: OK … What do you 1)(feel like)watching?M: Hmm. I ... I don't know really. 2)(What do you recommend)?W: Um … Well, 3)(how about)French Kiss? Do you know it?M: No, I don't think so. 4)(What's it about / What is it about)?W: Well, it's a romantic comedy. It's about an American woman. She goes to France and meets a French guy and … they fall in love. It's quite old, but it's really funny.M: Um, sounds OK, I suppose. 5)(Who's in it / Who is in it)?W: Meg Ryan and Kevin Kline.M: Oh, I like Meg Ryan. Mm. 6)(Do you think)I'd like it?W: Yeah, I think so. You like comedies, don't you? And it's very funny.M: Yeah, OK. 7)(Why don't we)get it then?W: Great. Excuse me. Can we have this one, please?2ADEGHIJ2-7 Presenting2-8 More practice in listeningDBCAD DCBCABACPeople joke that no one in Los Angeles reads; everyone watches TV, rents videos, or goes to the movies. The most popular reading materials are 1)(comic)books, movie magazines, and TV guides. City libraries have only 10 percent of the 2)(traffic)that car washes have. But how do you explain this? A yearly book festival in west Los Angeles is 3)(constantly)"sold out" year after year. People wait half an hour for a parking space to become 4)(available)This outdoor festival, supported by a newspaper, takes place every April for one weekend. This year, about 70,000 people 5)(took part in)the festival on Saturday and 75,000 on Sunday. The festival 6)(attracted)280 exhibitors. There were about 90 talks given by authors, with an 7)(audience)question-and-answer period following each talk. A food court sold all kinds of local foods, from hot dogs to ice drinks. Except for a $7 parking fee, the festival was 8)(free of charge). Even so, some people take their own sandwiches and drinks to avoid the high prices of the food court.The idea for holding the festival in Los Angles was 9)(put forward)years ago, but nobody knew if it would succeed. Although book festivals were already popular in other US cities, would people in this city 10)(embrace)one? "Fortunately, they do," said one of the festival founders. AC CD2-9 Check & check2-10 Unit test1 Fast music can give people energy according to the man.2 Have a short break.3 It's terrible.4 She will outperform the man.5 Tennis.6 14.7 15 months.8 He talks about nothing but computers.9 To give Billy a birthday present.10 Michael knows how to use computers properly.11 Students think music is important.12 They listen to music whenever they are free.13 It was the most popular style.14 Parents have very little influence on their children.15 3 percent.16) too much17) warning18) affected by19) back20) drive people to suicide21) pointed out22) recent23) commit24) prevention25) it's time/it is timeUnit 3 Life moments3-1 Learning objectives3-2 Sharing1.The people in the podcast mainly talk about how they feel about London and the mostexciting things they have done in London.2.I love 1)(living) in London because there's so 2)(much) to do. I've been to lots of3)(interesting places) but there's always 4)(something) new to 5)(experience). How do you6)(feel about) London?3.ADBGHFEC4.The most 1)(exciting) thing I've done in London recently is to see Oasis live. I went to theRoundhouse and it was the most 2)(amazing concert). It was free, so we ended up having nice passes, so we were close to the band and it was 3)(incredible) . It's the best thing I think I've seen in a long time.2. I've been to 4)(the theater) quite a lot in London. I went to see Waiting for Godot atthe National.3. I ... I think Tate Modern is 5)(the best place) I've been to, you know, because it's ... it's6)(different) every time ... Um, you know, they really push the boundaries of, you know,the displays, 7)(compared to) a lot of the traditional museums and art galleries in London.4. The most exciting thing I've done in London? Um, I've watched England 8)(play football)at Wembley – that was quite exciting.5. I've done a lot of 9)(interesting things). I've had a lot of good experiences here butprobably 10)(the best thing) was when I went to Wimbledon this year. Um ... I got to watch ... I got to watch Andy Murray on Center Court. I managed to get 11)(tickets) to that. And it was just a really good atmosphere and it was a good example of, sort of,British 12)(culture and sport).6.Recently, I visited Beijing. Beijing is a wonderful city with many great things to do and see.I went to the National Center for the Performing Arts (国家大剧院) to see a famousmusical. It was a wonderful show. And I visited the Bird's Nest and the Water Cube, two important venues (场馆) of the 2008 Beijing Olympic Games. I also went to the Tian'anmen Square, the Forbidden City, the Temple of Heaven, Peking University, and the Summer Palace. But the most exciting thing I did there was visiting the Great Wall – the view was breathtaking!Yes, I have been to London. I loved it. The museums are wonderful, especially the British Museum, which was established in 1753 and is one of the largest and most comprehensive museums in the world. I also enjoyed riding in the London Eye, a giant observation wheel on the South Bank of the River Thames. / No, I haven't been to London.If I have a chance to go to London, I would like to see places I have heard so much about, such as Tower Bridge, Tower of London, Buckingham Palace, Big Ben, and Westminster Abbey. I would also like to take the Tube as the London underground is the oldest underground railway network in the world. Besides, I hope to visit some of the 2012 London Olympic Games venues.3-3 Listening1.ADHEBGCF2.This happened in 1)(Australia) … when I was about 25. I spent a few days at a hotel inAlice Springs and went to Ayers Rock and … Well, anyway, one day, I went out for a walk …in the 2)(outback). It was a lovely day so I walked and walked … and then I realized I didn't really know where I was. I was a bit stupid, really … because I decided to 3)(go further) …I guess I thought I’d find the way back. Um … anyway, after that I heard some dogs. FirstI heard them barking, and then I saw them … There was a group – maybe five or six dogs,wild dogs, coming towards me. I felt really 4)(frightened), but I remembered some advice I, I, er … um, I … I read in my guidebook: 5)(Don't move), and don't look at 6)(the dogs).So I froze, like a statue … I didn't move … and I looked at a tree, not at the dogs, and didn't move my eyes. The dogs were all around me, jumping and barking … I thought they were going to bite me. Then one dog did bite my arm, just a little, but still I didn’t move. In the end, after about 20 minutes, the dogs went away. I stayed there for a few more minutes and then luckily found my way back to the hotel. It was the most7)(frightening) experience I've ever had!3.When I was 12 years old and just graduated from elementary school, I went to Beijingwith my dad to see the 2008 Olympic Games. I loved basketball, so I wanted to watch the Chinese basketball team playing and I especially wanted to see Yao Ming playing. First, we tried to buy tickets online, but all tickets for basketball games had been sold out. Of course, I was very disappointed. Then we went to the stadium to see if someone would be selling extra tickets. After we waited for hours, we became hopeless. But just when we were about to leave, a man came up to us and said he had an extra ticket because his friend couldn't make it due to an emergency. We were overjoyed. Immediately, my dad bought the ticket, and told me to rush in – he would wait outside. Finally, I was able towatch the game between the Chinese team and the German team. I enjoyed the game greatly and I was excited when China won. The best thing was that I saw Yao Ming. Whata wonderful experience!3-4 Viewing3-5 Pronunciation3-6 Role-playingExtract 1:B: Hi, Sean. 1)(It's) Debbie.A: Hi, Debbie. What's up?B: Is Kevin 2)(there)?A: No, he's not. He went out about 10 minutes ago.Extract 2:B: Could I 3)(leave a message) for him?A: Of course.B: Just ask him to 4)(call) me.Extract 3:B: Hello. Could I 5)(speak) to customer services, please?A: Just a 6)(moment).Extract 4:B: Could you 7)(ring) me back?C: Of course. Could you give me the 8)(number) there?Extract 5:B: Hello, uh ... Who's 9)(this)?A: My name's Marianne.B: Thanks for 10)(picking up).3-7 Presenting3-8M ore practice in listeningCCBDA BCADCABCSome parts of the earth are more likely to have earthquakes than other parts. This is usually true of 1)(mountainous) areas because there the thickness of rocks is not even.It is easy to understand why people are so 2)(frightened) by earthquakes. People used to believe that when an earthquake 3)(took place), the ground opened, swallowed greatnumbers of people, and then it closed. It was also thought that those people would 4)(vanish) forever. But now we know this is not what really happens.What we need to fear most is the effects of a serious earthquake, including fires, floods, and landslides. A powerful earthquake 5)(occurred) in Yellowstone National Park on August 17, 1959. The earthquake was 6)(massive) and very strong. It also caused the worst landslides in US history since 1927.After the earthquake, some people said that they would never visit Yellowstone, because they were afraid they would be 7)(caught) in such a disaster caused by the earthquake. This is actually a foolish idea. Such a fear would 8)(keep us away from) beautiful mountains for the rest of our lives. Even though earthquakes happen every day, such a powerful earthquake like the Yellowstone one does not happen frequently at all. We should feel 9)(grateful) that very few of us will suffer such a bad natural disaster. Besides, if we know 10)(in advance) and make careful preparations, the loss of lives could be avoided.CA DC3-9 Check & check3-10 Unit test1．He is confident.2. Having a dinner party for mom on Mother's Day.3. They will probably go to his workplace to give him a birthday present.4. When the guest is leaving.5. A speech by the president on TV.6. He proposed marriage to her.7. He was nervous and trembling all over.8. She gave him a hint by showing her ring finger.9. It is a family treasure.10. She is afraid of wearing it for fear of losing it.11. They had a frightening experience in darkness.12. He has not tested his idea of the frightening situation.13. Darkness.14. The Causes and Handling of Fear of Darkness.15. They overcome different levels of fear one by one.16.apply formitment18.opportunity19.restaurant20.developed21.working practices22.attending23.add24.personal qualities25.a positive additionUnit 4 Getting from A to B4-1 Learning objectives4-2 Sharing1.In the podcast, the people talk about how they get to work, what they do on their journeyto work, what they like and don't like about their journey.2. A B C CD AC E3.Take in the 1)(fresh air) , the scenery, um ... and try to 2)(avoid holes) in the road whichare quite dangerous.2. Well, sometimes, if ... if it's a bit of a quiet road, I can 3)(think about) what I'm goingto do that day.3. I ... I 4)(dream), usually. I just ... I, I love ... I love journeys. I love just 5)(looking out ofthe window).4. Well, it's so short; I don't actually do very much at all, apart from making sure I don'thave 6)(an accident).4.CEFDABCABDFE5.In my city / town, most students get to school 1)(Reference: by underground) (how). I2)(Reference: go to school by bus) (how) and it takes 3)(Reference: about an hour) (howlong). I usually 4)(Reference: listen to music) and 5)(Reference: look out of the window) (activities) on the journey.4-3 Listening1.CAB2.When was it invented?2. (Reference: What was the transportation idea?)3. (Reference: Who invented it?)4. (Reference: What was the idea behind it?)5. (Reference: What was the problem with it? / How successful was it?)3.1962leave their cars at homepublic transportbuildkeep in good condition1948got in and drove awayengineering problemtoo heavystrongprivatedifficult to flytraffic problems4.I like the idea of the monorail in that people could get to work faster by monorail thanby car. / I like the idea of the plane with a car that comes off because one can fly to a place and then drive his / her own car without bothering to rent a car. / I like the idea of the home helicopter because with a home helicopter one can fly directly to the place he / she wants to by taking the shortest route.The Horseless Sulky:•It can only hold two people.•It's difficult to slow down.•It's open to bad weather conditions.The Lightning Bug:•It's very small.•It's difficult to get in and out.4-4 Viewing4-5 Pronunciation4-6 Role-playing1.Alex got 1)(tied up) with a 2)(customer).2. David waited for 3)(20 / twenty) minutes to get his 4)(coffee).3. George was late because the railway service was 5)(delayed) when a train hit a 6)(cow)that got onto the line between two 7)(stations).2.BABABB3.CDFG4-7 Presenting4-8 More practice in listening1.CBDDA CBDD2.CADAHumans' first means of transportation were walking and swimming. 1)(Gradually), humans learned to use animals for transportation. The use of animals not only allowed heavier loads to be hauled by them, but also 2)(enabled) humans to ride the animals so they could travel longer distances in a shorter amount of time. The invention of the wheel helped make animal transportation more efficient through the introduction of 3)(vehicles).Also, water transportation 4)(dates back to) very early times and it was the best way to move large quantities of materials over long distances before the Industrial Revolution.5)(As a result), most cities that grew up as sites for trading have been established alongrivers or the coast.Until the Industrial Revolution, transportation was very slow and expensive. After the Revolution, transportation changed 6)(thoroughly). In the 19th century, the invention of the steam engine made land transportation independent of human or animal power. Both speed and 7)(capacity) increased rapidly.With the development of cars at the 8)(turn) of the 20th century, land transportation became more common. In 1903, the first controllable airplane was invented, and after World War I, it became a fast way to transport people and goods. After World War II,9)(automobiles) and airplanes became more popular as methods of transportation. Then,after high-speed rail was first introduced in Japan in 1964, passengers started using it in Asia and Europe instead of using airplanes to travel long distances.Now, 10)(thanks to) the development of technology, human beings are able to enjoy various methods of transportation for their speed and comfort.3.DC DBC4-9 Check & check4-10 Unit test1 The man was offering to give his seat to the woman.2 By bus.3 He feels impatient.4 The woman has a choice of early flights.5 By car.6 A madhouse.7 He hates Los Angeles and does not want to be there again.8 In cash.9 A special salad.10 Some like to fly, some others not.11 Share their fears with each other.12 It can create a small world of your own.13 Do something that engages your mind to forget the fear.14 Ways to Lessen Your Fear of Flying.15) motor16) sufferer。

土木工程力学习题答案第1-2章

1.1 力的基本知识班级姓名座号1-1-1 看视频“击打棒球”，体会在1/1000秒内，用90kN的力将棒球的速度由40m/s 降为0，再由0沿相反增加到更大的速度。

看视频“击打气球”，体会在1/1000秒内，力的大小、变形的大小还在变化。

树立力与变形一致，力与运动状态改变一致的观念。

填空：力是物体之间相互的机械作用。

这种作用的效应是改变物体的运动状态和使物体变形。

在分析力的运动效应时，可以不考虑物体的变形，将实际变形的物体抽象为受力而不变形的物体，称为刚体。

力的单位为N（牛顿）。

1KN = 1000 N。

矢量是既有大小又有方向的量，例如速度、加速度为矢量。

1-1-2做梁受集中荷载作用的小实验，观察梁的变形；将集中荷载展开为均布荷载，观察梁的变形。

（图1-1）实验元件：纸片件、链条画图：依据小实验画梁的计算简图。

填空：图1-1中，受集中荷载作用梁的变形较大；力的线集度q的单位为kN/㎡。

图1-1 集中荷载与分布荷载1-1-3 试在图1-2中分别以A、B、C、D为作用点，按集中力的描述画力矢量，并标出该力的“作用线”。

图1-2 集中力的三要素1-1-4 自己的体重是0.65kN，身高 1.75m。

假设自己平躺在床上，并简化为均布荷载，则荷载的线集度q = 0.371kN/m。

1.2静力学公理（一）班级姓名学号1-2-1看视频“首尔的平衡达人”。

填空：试按认识、表达的顺序书写集中力的三要素：作用点，方向，大小。

1-2-2 看动画“二力平衡公理”。

填空：作用在刚体上的两个力，使刚体保持平衡的必要和充分条件是，这两个力在同一直线上，指向相反，大小相等。

1-2-3 看动画“作用与反作用公理”。

填空：作用力和反作用力总是同时存在，分别作用在两个物体上，沿同一直线，指向相反，大小相等。

1-2-4 看动画“加减平衡力系公理”及其推论。

填空：力的可传性：作用在刚体上的力，可以沿着它的作用线移到刚体的任意一点，不改变力对刚体的作用效应。

幼儿园1 3的教学教案

幼儿园1 3的教学教案幼儿园教学教案，认识数字1和3。

一、教学目标。

1. 让幼儿能够认识数字1和3，并能够正确书写。

2. 培养幼儿对数字1和3的认知能力，能够进行简单的数学运算。

3. 通过游戏和活动，培养幼儿对数字1和3的兴趣和好奇心。

二、教学重点。

1. 认识数字1和3。

2. 能够正确书写数字1和3。

三、教学难点。

1. 让幼儿正确区分数字1和3。

2. 能够正确书写数字1和3。

四、教学准备。

1. 数字1和3的卡片或图片。

2. 彩色笔、彩色纸、彩色贴纸等教具。

3. 数字1和3的歌曲或视频。

4. 数字1和3的相关游戏和活动。

五、教学过程。

1. 导入活动。

教师播放数字1和3的歌曲或视频，让幼儿跟着节奏一起唱。

2. 认识数字1和3。

教师出示数字1和3的卡片或图片，让幼儿观看并感受数字的形状和特点。

然后让幼儿用手指在空中或纸上画出数字1和3的形状。

3. 认知游戏。

教师准备一些彩色贴纸，让幼儿用贴纸在纸上贴出数字1和3的形状。

然后让幼儿用彩色笔在纸上画出数字1和3的形状。

4. 数学活动。

教师出示一些物品，如积木、玩具等，让幼儿用这些物品摆出数字1和3的数量。

然后让幼儿用手指或彩色笔在纸上画出相应数量的圆圈，表示数字1和3。

5. 拓展活动。

教师可以设计一些数字1和3的游戏，如找数字、数数字等，让幼儿在游戏中加深对数字1和3的认识。

六、教学总结。

通过本节课的教学，幼儿能够认识数字1和3，并能够正确书写。

同时，通过游戏和活动，幼儿对数字1和3的兴趣和好奇心得到了培养。

接下来，教师可以通过更多的实践活动，巩固幼儿对数字1和3的认知能力，为他们打下坚实的数学基础。

新职业英语2 unit1-unit3原文+译文

Unit 1Each day, many people are looking for trends in workplace clothing, so that they can “fit in”with the fashionable or well-dressed crowd. They believe that dressing in the latest fashion trends may give them the reputation of being fashionable and trendy. While it is more than possible to do this, you need to display caution.许多人每天都在捕捉职场时装的潮流，以便能与那些衣着时尚得体的人们步调一致。

他们认为按最新潮流穿衣打扮能为自己赢得时尚和时髦的好名声。

尽管这样做合情合理，你还是要小心谨慎。

What many people do not realize is that there are a number of pros and cons of relying on workplace fashion trends. One of those pros was mentioned above. When you wear a fashionable outfit to work, there is a good chance that you will receive a lot of compliments on your outfit. This is a nice feeling and it is one that makes many feel proud.许多人并没有意识到，追随职场时装潮流有利也有弊。

好处之一，正如上面所提到的，穿一套时髦的衣服去上班，很可能会得到一堆夸奖。

6.1-3一元一次方程1

3
一、判断题
1、x=2是方程x-10=-4的解---（ ×） 2、x=1与x=-1都是方程x2-1=0的解-（ √ ） 3、方程12(x-3)-1=2x+3的解是x=-4--（ ×）二、选择题
1、方程2(x+3)=x+10的解是 ( C ) A x=3 B x=-3 C x=4 D x=-4 2、已知x=2是方程2(x-3)+1=x+m的解，则m=（ C ） A 3 B 2 C -3 D -2
-3
则m ____.
2
1
2 x 2 x 3、当x ____时，式子与互为相反数. 2 3 4、 2 （ 3 y 4)的值比5 （ 2 y 7)的值大3，
2（3y+4)=5(2y-7)+3 列方程得 _________
5、方程2y-6=y+7变形为2y-y=7+6,这种变形叫________ 移项
2、已知 2 x m1 1 0 是一元一次方程，则m = 0 。
变式训练
1、下列式子中是一元一次方程的是（ B ）
15x 0 21 3x 3y2 4 y
A 1个 B 2个 C 3个
B D
43m 2 1 m
D 4个 2、已知等式3a=2b+5,则下列等式中不一定成立的是（ C）
（1）6x+2=14(0,1,2,3) （2）10=3x+1(0,1,2,3) x=2 x=3 x=8 x=6
（3）2x-4=12(4,8,12)
（4）3=2/3x-1(3,6,9)
2、检验下列各括号内的数是不是它前面方程的解。（1）x-3（x+2）=6+x （x=3，x=--4）（2）44x+64=328 （x=5，x=6）（3）2.5x-0.5x=3.3x-1.2x （x=47，x=0， x=3500） 4 （4）（y-1）=y+ (y=,y=3,y=-6)

画法几何及工程制图习题解答(第三版)

【5-7】求作下列直线与平面的交点，并判别其可见性。
【6-1】求作下列两平面的交线，并判别其可见性。
【6-2】已知平面△ABC和直线DE，求作下列直线或平面。 ⑴过点F作直线FG⊥△ABC；⑵过直线IJ作平面IJK⊥△ABC；⑶过点P作平面PQR⊥DE。
【6-3】已知平面P、Q，直线AB、CD，求作下列直线或平面。 ⑴过点E作直线EF⊥平面P，直线EG⊥平面Q；⑵过直线IJ作平面 IJK⊥平面P,过直线IJ作平面R⊥平面Q；⑶过点U作平面S⊥AB，作平面T⊥CD。
【4-7】作图检验点D和直线AE是否在△ABC平面上。
【5-1】在平行四边形ABCD平面上取一点E，使其距离V面25mm，距离W面10mm，求作点E的两面投影。
【5-2】已知矩形平面ABCD上的△EFG的水平投影，作出其正面投影。
【5-3】补全平面图形ABCDEFG的正面投影。
【5-4】已知平行四边形ABCD上有一个直角等腰三角形△EFG，FG 为水平线，直角顶点E在FG的后上方，求作平面ABCD的α 倾角，并完成直角等腰△EFG的两面投影。
【6-4】检查下列直线与平面或平面与平面的相对位置。
【7-1】作图检验下列直线与平面或平面与平面的相对位置。
【7-3】过点A作直线与直线BC、OX轴都相交。
【7-4】已知等腰△ABC的底边BC,顶点A在BC的前方，补全△ABC 的水平投影。
【7-5】求作一直线与AB平行，与CD、EF都相交。
【3-7】作两交叉线AB、CD的公垂线，并表明AB、CD之间的真实距离。
【4-1】按下列平面对投影面的相对位置，分别填写它们的名称和角度。
【4-2】过点A作正平面P;过点B作侧垂面Q和R，β ＝60°；过CD 作正垂面T。

新编大学英语综合教程1—Unit3Reading-Centered Activities

3. Conclusion (Para 6)
To communicate successfully in a foreign language, we need to master a fifth skill, _c_u_lt_u_r_a_l a_w__a_r_e_n_e_ss_.
3) Reading Comprehension
In-Class Reading
After-Class Reading
1. Background Information 2. Extensive Reading 3. Intensive Reading 4. Exercises
1. Background Information
1. About Countries
(3) Waving your hand while curling the fingers downward
(4) Waving your hand while curling the fingers upward
Both gestures mean “Come here!”
2) Text Structure
Latin America: the countries of South America, Central America and Mexico, where Spanish or Portuguese is spoken
2. Social Distances (社交距离)
The social distances here are approximate, of course, and will vary with people. But they are still a good general rule.

WHO三阶梯止痛原则(共32张PPT)

非甾体消炎药±辅助药物
基本原则：
1、按阶梯给药；2、口服；3、按时给药；4、个体化；5、注意具体细节
3 “by”: by the ladder, by the mouth, by the clock
2 “one”: One route, one drug
WHO三阶梯止痛原则
2
三阶梯治疗原则之二
• 口服给药
• 阿片类药物
– 作用机制：与感觉神经元上的阿片受体结合，抑制P物质释放，阻断
疼痛感觉传入大脑，达到止痛效果
癌症三阶梯止痛指导原则2002
非阿片类药物
• 非阿片类药物：
– NSAIDs治疗基础用药 – 解热、止痛及抗炎作用 – 无耐药性和依赖性 – 有剂量极限性(天花板效应) – 如到限制量疗效不佳，改用或合用阿片类药物
部分缓解(P– R)：前治列疗腺后素疼可痛调明节显肾减血轻流，、睡水眠、基钠本平上衡不等受作干用扰，，前能列正腺常素生合活成；抑制可导致肾血管收缩，肾血流下降，肾滤过下降。个别敏目选测择模镇拟痛法药(应VA从感S低-个划级体线向可法高致)级急顺性序肾提衰高
如果• 疼痛肝使功患者能无的法影睡响眠则为重度疼痛
癌症三阶梯止痛指导原则2002
阿片类药物分类
• 临床分类：强阿片药物，弱阿片药物 • 按对受体的作用分类：
– 激动剂：吗啡、羟考酮、芬太尼、哌替啶、可待因 – 部分激动剂：丁丙诺菲 – 拮抗剂：纳络酮
阿片类药物
• 阿片类药物：
– 癌痛治疗基础用药 – 供选择种类多、剂型也多 – 无剂量极限性(无天花板效应) – 剂量滴定个体差异明显 – 首选口服途径给药
如到• 限制C量O疗X效-2不抑佳制，剂改－用可或致合肾用功阿能片损类害药及物心肌缺血

单片机原理及应用课后习题参考标准答案1-6章

单片机原理及应用》习题答案第一章计算机基础知识1- 1 微型计算机主要由哪几部分组成？各部分有何功能？答：一台微型计算机由中央处理单元（CPU）、存储器、I/O 接口及I/O 设备等组成，相互之间通过三组总线（Bus）：即地址总线AB、数据总线DB和控制总线CB 来连接。

CPU由运算器和控制器组成，运算器能够完成各种算术运算和逻辑运算操作，控制器用于控制计算机进行各种操作。

存储器是计算机系统中的“记忆”装置，其功能是存放程序和数据。

按其功能可分为RAM和ROM。

输入/ 输出（I/O ）接口是CPU与外部设备进行信息交换的部件。

总线是将CPU、存储器和I/O 接口等相对独立的功能部件连接起来，并传送信息的公共通道。

1-3什么叫单片机？其主要由哪几部分组成？答：单片机（Single Chip Microcomputer ）是指把CPU、RAM、ROM、定时器/ 计数器以及I/O 接口电路等主要部件集成在一块半导体芯片上的微型计算机。

1- 4 在各种系列的单片机中，片内ROM的配置有几种形式？用户应根据什么原则来选用？答：单片机片内ROM的配置状态可分四种：（1）片内掩膜（Mask）ROM型单片机（如8051），适合于定型大批量应用产品的生产；（2）片内EPROM型单片机（如8751），适合于研制产品样机；（3）片内无ROM型单片机（如8031），需外接EPRO，M单片机扩展灵活，适用于研制新产品；（4）EEPRO（M或Flash ROM）型单片机（如89C51），内部程序存储器电可擦除，使用更方便。

1-5 写出下列各数的另两种数制的表达形式（二、十、十六进制）1- 6 写出下列各数的BCD参与：59：01011001，1996：0001100110010110，4859.2：0100100001011001.0010389.41 ：001110001001.01000001第二章MCS-51 单片机的硬件结构2-1 8052 单片机片内包含哪些主要逻辑功能部件？答：8052 单片机片内包括：①8位中央处理器CPU一个②片内振荡器及时钟电路③256B 数据存储器RAM。

3 第一章岸桥构造及功能简介(OK)

上海振华港口机械(集团) 股份有限公司
岸桥构造及维护手册
第1章岸桥构造及功能简介
第 1 章岸桥构造及功能简介
本章要点：
岸桥及配套零部件的使用寿命在很大程度上取决于买方的正确使用、安全操作和及时保养。
将岸桥构造及功能介绍作为本版《岸桥构造及维护手册》的开篇章节，其目的是使岸桥操作、维修人员能了解起重机的构造、功能、性能和特点。为正确、安全地操作和保养岸桥打下良好的理论基础。
电动机减速箱高速制动器
型号功率转速型号速比额定扭矩型号制动力矩
表 1-2：主起升机构主要零部件参数
ODRKF 400L 2X720kw
低速制动器
型号制动力矩
900/1800rpm
型号
FH1655.21.C2A
高速联轴器额定扭矩
21.389
制动扭矩
2X275kNm YP41-4500-900x30
1
2
3
图 1-6：起升卷筒末端的限位装置
1 凸轮限位 2 超速开关 3 绝对值编码器
图 1-7：增量型编码器 2）高速轴制动器限位开关
两个起升制动器都是由一个制动器释放限位开关（常开触点）和一个制动器手动释放限位开关（常闭触点）监测。在没有起升手柄命令的情况下，激活其中任何一个限位开关，都会禁止起升动作。
活该开关电动机将正常停止。此时可以在 CMS 系统中将绝对值编码器“手动清零”。
4）上升减速检测由增量型编码器和凸轮限位开关共同控制。如果在凸轮限位开关的上升减速检测点动作时，增量型编码器反映起升速度值没有减小到设定范围值，那么将启动紧急停车。
5）上升智能减速由凸轮限位开关和 PLC 的程序共同控制。可以根据实际速度的大小设定减速距离，目的是到达指定位置时起升速度均减小为设定值。

F-PES基准2015版第一版

在防火门、防火卷帘门的动作范围内放置物品，导致防火门、卷帘 A 门无法完全关闭自动火灾报警器、消防栓、灭火器前存放杂物，阻碍操作 A：无法进行灭火（无法取出软管、无法走到自动火灾报警器前） 6-1-2 B：难以迅速移动（室内消防栓的软管卷盘箱前应确保80Cｍ以上宽 A/B/C 度的空地） C：在其前面可以迅速移动（施工工地不适用）消防设备/设施故障。 6-1-3 A等级：未保持正常功能状态｡ C等级：有轻微的损伤、破损。 6-1-4 消防设备/设施的指示灯未亮灯 6-1-5 未按规定实施灭火器点检 A／C C C A/B B C B B B C A／C C C C A B
A/B
B A B
26
5-1
27
危化品 33 34 35 36 37 38 39 40 41 42 储存 5）危化品管理
5-4 5-5 5-6 5-7 5-8 5-9
危化品从供料泵或存储罐等漏出或溢出 A：闪点低于60℃的液体、酒精等危险品流淌到地面或接油盘内。 B：除A以外的，闪点高于60℃低于250℃的危险品流淌到地面或接 A/B/C 油盘内（积累至接油盘深度的1／2以上时为不符合） C等级：危险品未流淌到地面或接油盘内，但泄漏、溢出、渗出的未及时擦干。在涂料混合室、调漆间、喷漆房、加油站内维修或作业时，没有使 A 用无火花工具（铍、铝、黄铜制工具）。需要接地的地方无地线。 A：闪点低于21℃的危险品的容器、设备及供油泵等 A/B/C B：闪点高于21℃低于70℃的容器、设备 C：使用闪点70-200℃的危险品的设备需要接地的地方地线松动：闪点低于70℃的危险品的容器、设备、 C 供油泵等危化品设施的防火间距不足或者在防火间距内存放可燃物品贮存有闪点低于60℃的危化品仓库内，未使用防爆型电气设备未规定危化品的贮存地点。危化品的贮存量超量未在贮存地点张贴「严禁烟火」标识。 B B B B B B B C C C C C C B B

托福TPO1阅读原文(三)Timberline Vegetation on Mountains及译文

新托福TPO1阅读原文(三):Timberline Vegetation on MountainsTPO-1-3：Timberline Vegetation on MountainsThe transition from forest to treeless tundra on a mountain slope is often a dramatic one. Within a vertical distance of just a few tens of meters, trees disappear as a life-form and are replaced by low shrubs, herbs, and grasses. This rapid zone of transition is called the upper timberline or tree line. In many semiarid areas there is also a lower timberline where the forest passes into steppe or desert at its lower edge, usually because of a lack of moisture.The upper timberline, like the snow line, is highest in the tropics and lowest in the Polar Regions. It ranges from sea level in the Polar Regions to 4,500 meters in the dry subtropics and 3,500-4,500 meters in the moist tropics. Timberline trees are normally evergreens, suggesting that these have some advantage over deciduous trees (those that lose their leaves) in the extreme environments of the upper timberline. There are some areas, however, where broadleaf deciduous trees form the timberline. Species of birch, for example, may occur at the timberline in parts of the Himalayas.At the upper timberline the trees begin to become twisted and deformed. This is particularly true for trees in the middle and upper latitudes, which tend to attain greater heights on ridges, whereas in the tropics the trees reach their greater heights in the valleys. This is because middle- and upper- latitude timberlines are strongly influenced by the duration and depth of the snow cover. As the snow is deeper and lasts longer in the valleys, trees tend to attain greater heights on the ridges, even though they are more exposed to high-velocity winds and poor, thin soils there. In the tropics, the valleys appear to be more favorable because they are less prone to dry out, they have less frost, and they have deeper soils.There is still no universally agreed-on explanation for why there should be such a dramatic cessation of tree growth at the upper timberline. Various environmental factors may play a role. Too much snow, for example, can smother trees, and avalanches and snow creep can damage or destroy them. Late-lying snow reduces the effective growing season to the point where seedlings cannot establish themselves. Wind velocity also increases with altitude and may cause serious stress for trees, as is made evident by the deformed shapes at high altitudes. Some scientists have proposed that the presence of increasing levels of ultraviolet light with elevation may play a role, while browsing and grazing animals like the ibex may be another contributing factor. Probably the most important environmental factor is temperature, for if the growing season is too short and temperatures are too low, tree shoots and buds cannot mature sufficiently to survive the winter months.Above the tree line there is a zone that is generally called alpine tundra. Immediately adjacent to the timberline, the tundra consists of a fairly complete cover of low-lying shrubs, herbs, and grasses, while higher up the number and diversity of species decrease until there is much bare ground with occasional mosses and lichens and some prostrate cushion plants. Some plants can even survive in favorable microhabitats above the snow line. The highest plants in the world occur at around 6,100 meters on Makalu in the Himalayas. At this great height, rocks, warmed by the sun, melt small snowdrifts.The most striking characteristic of the plants of the alpine zone is their low growth form. This enables them to avoid the worst rigors of high winds and permits them to make use of the higher temperatures immediately adjacent to the ground surface. In an area where low temperatures are limiting to life, the importance of the additional heat near the surface is crucial. The low growth form can also permit the plants to take advantage of the insulation provided by a winter snow cover. In the equatorial mountains the low growth form is less prevalent.译文：TPO-1-3 山上树带界线的植被通常从山坡上的森林到没有树的苔原是一种非常戏剧化的转变。

养生太极掌1--3套动作名称

养生太极掌养生太极掌是在古代导引、气功、太极拳等多种健身术的基础上，以易学的哲理及祖国医学中的阴阳五行学说为理念,以疏导经路、畅销气血和采日月之精华为手段，以柔和缓慢、连绵不断的行进走旋、摆扣磨转、变换多端、协调自然为运动形式，以“天人合一”、“人社相关”、“心身一致”的整体观，辩证立法、对证选势创编的。

养生太极掌具有"形劳心安、疾病不生、康体增寿、天年永享"之养生方技。

养生太极掌第一套动作名称第一段：1、真人采气2、托梁换柱3、顺手牵羊4、掌推华山5、白马磨头6、巧女纫针7、春风摆柳8、苍鹰掐膆9、苍鹰掐膆第二段：10、上峰诊脉11、卧龙藏身12、顺身转舵13、紫燕栖巢14、喜鹊舒尾15、罗汉安睡16、野马分鬃17、上峰诊脉18、卧龙藏身19、顺身转舵20、撩衣提袍21、金鸡独立第三段：22、掩手挑帘23、孤雁出群24、二龙戏珠25、昭君捕蝶26、母鸡护雏27、气息归元第四段：28、开合拉气29、气息归元30、宿鸟投林31、巧女纫针32、春风摆柳33、苍鹰掐膆34、迎风摆莲35、顺手牵羊36、推波助澜37、马步单鞭38、母鸡护雏39、采气归元养生太极掌第二套动作名称1、真人采气2、迎风掸尘3、托梁换柱4、金鸡独立5、鹞子穿林6、野马分鬃7、金鸡独立8、仙人摘茄9、金龙戏水10、螳螂捕食11、神龙探海12、龙盘玉柱13、乌龙翻江14、虎卧凤巢15、童子抱琴16、侧身锁原17、喜鹊登枝18、十字穿花19、白虎坐洞20、走马回身21、神龙探海22、龙盘玉柱23、乌龙翻江24、虎卧凤巢25、童子抱琴26、侧身锁原27、喜鹊登枝28、闭门推月29、游鱼摆尾30、推山填海31、连珠飞脚32、顺风扫莲33、苍鹰掐膆34、神龟服气35、气行劳底36、龙盘海底37、嫦娥舒袖38、劳宫采气39、气息归元养生太极掌第三套动作名称1、真人采气2、清水穿鱼3、上峰诊脉4、碧海藏龙5、黄蜂出洞6、脱铐开枷7、蛟龙翻浪8、鸾凤栖梧9、腊梅迎春10、金鸡独立11、浪里行舟12、野马分鬃13、鴷鸟啄食14、烈马翻蹄15、青龙潜海16、金丝缠腕17、行云流水18、黄蜂出洞19、旭日东升20、鹰击长空21、腾蛟起凤22、大鹏展翅23、碧海藏龙24、碧海藏龙25、云压青松26、金针指南27、灵龟服气28、野马分鬃29、鴷鸟啄食30、烈马翻蹄31、青龙潜海32、金丝缠腕33、行云流水34、马步单鞭35、羽翼护雏36、气息归元。

人教版七年级英语下册第一到三单元知识点

人教版七年级英语下册第一到三单元知识点人教版七年级英语下册1-3单元知识点复习Unit 1.Can you play the guitar1. play + 球/棋/牌 play football /chess/ cardsPlay the +乐器 play the guitar play the pianoPlay with 和…一起玩 play with me his friends2. Speak ①说某种语言 Speak English/ Chinese②发言He doesn’t like speaking in class.他上课不喜欢发言。

English-speaking students 说英语的学生spoken English 英语口语3. want 需要，想要 = would likewant to do sth. 想要做某事 = would like to do sth.want sb. to do sth. 想要某人做某事 = would like sb to do sth4. join 参加，加入join sb 加入某人join （sb ） in sth 加入(某人）参加某项活动（如game，talk，discussion等） join a/ the ..... club 加入...俱乐部 join a sports club 加入运动俱乐部join +组织、团体 join the army 参军 join the party 入党5. let sb +动词原形让/允许某人做某事My parents don’t let me watch TV on school nights.Let’s + do sth. 让我们…吧！ ( 包括说话对方在内)（表示建议的句型）Let’s go, shall we? 我们一起走，好吗？Let us go, will you? 让我们走，好吗？6. write stories 写故事 writer 名词作家write to sb. 给某人写信 write down 写下，记下7.tell a story , tell stories 讲故事tell sb. sth.= tell sth. to sb 告诉某人某事tell sb a story=tell a story to sb. 给某人讲故事tell sb. （not） to do sth. 告诉某人（不要）做某事8. show ①演出，节目on show 在展览TV show 电视节目school show②给…看，展示show sb. sth.= show sth. to sb. 给某人看某物Show me your photos.= Show your photos to me.9.help sb. with sth. 在某方面帮助某人Can you help me with my English?help sb. (to) do sth. 帮助某人做某事10.busy 忙碌的，忙的be busy (in) doing sth. 忙于做某事be busy with sth.忙于某事11. home 为副词 at home 在家 get home 到家 go home 回家12.free ①自由的 I want to be（成为） a free bird.②空闲的 I am free on the weekend.③免费的 They are working for free. 他们在无偿工作。

一码定蓝

109：04 4
判断正确！！
108：06 1
109：04 4
110：09 4
看一下：代码出现了1--4--4--？A----XX----A？出现这种形式，就要关注A的代码，我建议连跟1-5天。这里A=1=1，11，6，16。
实际开出时间：
111：09 4
112：16 1
判断正确！！
实际什么时间开出的？就在下一期！！
123：07 2
判断正确！！
120：14 4
121：12 2
122：09 4
123：07 2
看一下：代码出现了4--2--4--2--？形式的对称，A--B--C---B----A？出现这种形式，就要关注A的代码，我建议连跟1-5。代码4的蓝球=4 14 09。杀去上面出现的4尾，就可以一码定蓝09。
实际开出时间：
087：08 3
一码定蓝正确！！
087：08 3
088：07 2
089：12 2
看一下：代码出现了3--2---2--？A----XX----A？出现这种形式，就要关注A的代码，我建议连跟1-5天。这里A=3=03，13，08。前面出现了08，就要重点关注03，13。
实际开出时间：
关于其他的形式我改天再讲。
蓝球计算（二）
1-2-4-3-4-1-2-1---？出现4--1--2--1--？4？4=04，13
142：定蓝04，13
1--2--1，2--3---2，0--2--0
大家发现了没有：2-1-？下3。1-2--？下1
判断正确！！
104：09 4
105：03 3
106：13 3

人教pep版英语五年级上册Unit 1-Unit 3单元知识点复习课件

2. She's clever and polite. (对划线部分提问)
△语音
• 字母y的发音 • 一、y前有元音字母就发/I/
• baby happy windy sunny sorry candy many family party
• 婴儿开心的有风的晴朗的对不起糖果许多家庭聚会
6. be 动词的三种形式 am, is, are 与人称代词连用的用法：
I + am,
He, she, it ，人名、物名+ is
We, you, they + are
7. Ms. , Miss , Mrs. , Mr. 的区别:
女 she
男 he
习题： 1. Do you often read books in this park?(作否定回答)
read books（看书）
play football（踢足球）
play ping-pong（打乒乓球）
play the pipa（弹琵琶）
listen to music（听音乐）
clean my room（打扫我的房间） draw pictures（画画）
play sports（做运动）
△句型：
• 二、y前没有元音字母就发/aɪ/
• by 乘坐 my 我的 why 为什么 cry 哭 fly 飞
Unit1 What's he like? 单元写作
话题：介绍自己、朋友或老师等熟悉的人物，如：My …teacher/friend/…
思路导引：（1）开头：交代人物的身份 I have a/an…. He/She is… （2）中间： 1）体貌 He/ She is tall/strong… He/She has …hair/eyes… 2）性格 He/She is strict/kind… 3）爱好 He/She likes playing pingi-pong/… （运动类）或 He/She like reading books/…（文艺类） on the weekend. （3）结尾：评价人物或抒发对人物的情感 I like him/her very much.

1大三和弦根音与三音是大三度

1。

大三和弦：根音与三音是大三度，三音与五音是小三度，用根音的大写英文字母音名来表示，如DO，MI，SOL和弦用C表示，FA，LA，DO和弦用F表示，降MI，SOL，降SI就用Eb表示，升FA，升LA，升DOL用F#表示。

2。

小三和弦：根音与三音是小三度，三音与五音是大三度，用根音的大写英文字母音名加上小写m表示，如RE，FA，LA和弦用Dm表示，MI，SOL，SI和弦用Em表示，降MI，降SOL，降SI用Ebm表示。

3。

增三和弦：根音与三音，三音与五音都是大三度，用根音的大写英文字母音名加上aug 或加一个“+”。

如DO，MI，升SOL和弦表示为Caug或C+，FA，LA，升DO和弦表示为Faug或F+。

4。

减三和弦：根音与三音，三音与五音都是小三度，用根音的大写英文字母音名加上dim 或一个“-”。

如RE，FA，降LA，表示为Ddim或D-，升DO，MI，SOL表示为#Cdim或#C-。

5。

大小七和弦：在大三和弦基础上再加小三度，用根音的大写英文字母音名加上“7”即可，如SOL，SI，RE，FA和弦用G7表示，LA，升DOL，MI，SOL用A7表示。

6。

大大七和弦：在大三和弦基础上再加大三度，用根音的大写英文字母音名加上maj7表示，如DO，MI，SOL，SI和弦表示为Cmaj7,降SI，RE，FA，LA和弦表示为Bbmaj7.7。

小小七和弦：在小三和弦基础上再加小三度，用根音的大写英文字母音名加上“m7”表示。

如LA，DO，MI，SOL和弦表示为Am7,RE，FA，LA，DO和弦表示为Dm7.8。

小大七和弦：在小三和弦基础上再加大三度，用根音的大写英文字母音名加上mM7表示，如DO，降MI，SOL，SI和弦表示为CmM7,LA，DO，MI，升SOL表示为AmM7.9。

减七和弦：在减三和弦的基础上再加小三度，用根音的大写英文字母音名加上dim7表示，如SI，RE，FA，降LA和弦表示为Bdim7,LA，DO，降MI，降SOL表示为Adim7.10。

空气动力学1-11

第一章流体介质习题：1-1.气瓶容积为315.0m ，在K 303时，瓶中氧气的压强是26/105m N ⨯，求气瓶中氧气的重量。

解：由完全气体状态方程RT p ρ=……………………①和质量体积关系Vm=ρ……………………………② 得：N KK s m s m m m N RT pVg mg G 50.84303)/(053.287/8.915.0/105222326≈⨯⋅⨯⨯⨯=== 所以气瓶中氧气的重量为N 50.84。

1-2.两平行圆盘，直径都为D ，两者相距h ，下盘固定，上盘以匀角速度ω旋转。

盘间有一种粘性系数为μ的液体。

假设与直径D 相比两盘的距离h 为小量，两盘之间液体的速度分布呈线性关系。

试推导粘性系数μ与转矩T 及角速度ω之间的关系式。

解：如右图建立平面直角坐标系xy o -，上盘的轴向速度设为：()r n r ωυ=,，因为两盘之间液体速度呈线性分布，所以两盘之间液体的周向速度为：()r h yn r ωυ=,……………………………①摩擦应力为：dyd υμτ=………………………② 取上盘dr 微段圆环为研究对象，其转矩为：r ds dT ⋅⋅=τ ……………………………③ ∵θrdrd ds =……………………………④ ∴①、②、④代入③得：θμωτdrd hr dr ds dT 3=⋅⋅=两边积分得：hD drd hr T D 3242023πμωθμωπ==⎰⎰，即为粘性系数μ与转矩T 及角速度ω之间的关系。

1-3.用容积为31000m 的金属罐作水压试验。

先在容器内注满一个大气压的水，然后加压注水，使容积内压强增加到25/107m N ⨯，问需再注入多少水？解：有水的体积弹性模数公式可知水压试验后容器内的液体密度增量为：ρρE =∆，则多注入水的体积为：3293225285.0/101.21000)/101325/107(m mN m m N m N E V p V E p VmV ≈⨯⨯-⨯=⋅∆=⋅⋅∆=⋅∆=∆=∆ρρρρρ。