2013届周末练习6参考答案

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2013年6月英语六级真题及答案详解

2013年6月英语六级真题及答案Part I Writing2013年6月六级作文范文一It is not exaggerating to say that habits determine how much a person can achieve. This is due to the magical power that habits have. It can redouble the effort of our daily behavior.Take this for example: if you recite one word every day, you will add 365 words to your vocabulary by one year, and 700 words by two years, and 1400 words before graduation which is by far beyond the curricular of CET-6. While if you spend two hours on playing computer games—which is far less than how much time is spent in reality for college students— you will probably get addicted to it and fail your study. This phenomenon can be easily found in the college that it is high time for us to be aware of the importance of habits. We should cultivate good habits and get rid of the bad habits such as staying up late, being addicted to games, consuming extravagantly, etc as soon as possible. Rome was not built in one day. We can accumulate a great fortune by the tiny efforts we made every day. From now on say good bye to the bad habits and stick to the good ones, we will enjoy a profitable return in the future.2013年6月六级作文范文二Good habit result…Good habits are a valuable thing and a bridge reaching desirable results. Evidently, good habits include teamwork, optimistic attitude, confidence and so on. It is well known that teamwork always leaves us less mean-spirited and more inclusive. Again, optimistic attitude and confidence can encourage us to never give up and find silver linings in desperate situations.Why should we actively cultivate good habits? For one thing, good habits can jump our trains of thought onto correct tracks, in turn, we can bypass the wrong path. For another thing, persisting what we are good at and doing even more of it creates excellence. This is where developing good habits comes in.As a result, we should take some effective steps to cultivate our good habits. For instance, we can frequently inform young people that opportunities for errors abound, so we must develop good habits to cope with them. To sum up, we cannot deny it that good habits do carry a positive connotation.Part Ⅱ Reading Comprehension (Skimming and Scanning)暂缺Part III Listening Comprehension (35 minutes)Section ADirections:In this section you will hear 8 short conversations and 2 long conversations. At the end of each conversation, one or more questions will be asked about what was said. Both the conversations and the questions will be spoken only once. After each question there will be a pause. During the pause, you must read the four choices marked A), B), C) and D), and decide which is the best answer. Then mark the corresponding letter on Answer Sheet 2 with a single line through the centre.注意：此部分试题请在答题卡2上作答。

2013年6月六级考试真题答案解析(一)

2013 年 6 月六级考试真题答案解析（第一套）2013 年 6 月大学英语六级考试真题 ( 一) 答案与详解Part ⅠWriting1、审题 :本篇是评论性的话题作文。

“微笑”是常谈不衰的话题，它本应是人们最自然、最常见的表情，而现代都市人大都为生活、工作、学业、子女等种种事务日复一日地劳碌奔波，背负着越来越大的压力，那种最真诚、最自然、最质朴的微笑正渐渐从人们的脸上消失。

在科技发达的现代社会，人与人之间在空间上的距离更近了，但在心灵上却越走越远。

本篇要求评论“微笑可以拉近两个人的距离”这句话并为文，而在更深层次上，出题人似乎是想借这个题目引发人们的思考，让人们通过“微笑”消除彼此之间的冷漠、仇恨、冲突，搭建良好的交流沟通和亲近的桥梁，因此这一题目开放性强，考生可发挥的空间很大。

此外，题目 Drections 中指出考生可以援引事例来证明观点，这为考生行文提供了一个思路，即：先陈述微笑的作用，然后援引事例予以证明，并对事例简单评述以点题，最后提出个人看法。

此外，考生也可先指出微笑可以缩短人与人之间距离的几个方面，然后指出微笑所代表的深层含义 ( 人与人之间的信任支持、关怀友爱、宽容悲悯等真挚情感），最后再作出总结。

2、写作思路：第一段：引用特蕾莎修女的名言，指出微笑能缩短人与人之间的距离，并从三个方面体现：消融冷漠或敌意；赋予力量；拉近友情。

第二段：从不同角度举例证明微笑能缩短人与人之间的距离：绝望中抚慰心灵；陌生环境中与人亲近，获得帮助；困境中，获得力量。

第三段：总结前面所述，给出个人看法：微笑让我们受益匪浅，笑口常开促进人与人的交流，促进社会的和谐。

A Smile Can Shorten the Distance Between PeopleMother Teresa once said, “ Every time you smile at someone, it is an action of love, a gift to that person, a beautiful thing. ”Human beings are said to be one of the few species in this planet who can express sincere sentiments through a smile. And it is a smile that melts the indifference or hostility between people, that gives power to those who are at the edge of despair, and that brings friends close to each other. In a word, it is a smile that continuously shortens the distance between people.A smile, with its strong power, brings out its miraculous glamour in different ways. When you are in the situation of despair, a smile from others will console your hurting heart. When you get into an unfamiliar circumstance, a smile will make the people around you feel comfortable and help you willingly. When you get into trouble, a smile from friends will give you power to stand up. Where there is no smile, there is no happiness of life.Seen from the discussion above, a smile benefits us very much. Let ’s keep smiling so that better communication between people can be achieved and a more harmonious society can be built.PartⅡListening Comprehension1.听力原文： W: I was shocked to hear of your wife ’s illness. Is she going to be all right?M: At first, the doctors won’ t assure, but she’ s reallySheimproved’llbehome. next week.Q: What do we learn about the man’s wife from the conversation?【预测】选项中的主语she 以及 recovered, operation, critical condition ( 危急状况）和getting much better表明，对话与she 的病情有关。

2012-2013学年(上)六年级数学第六周周末作业

2012-2013学年（上）六年级数学第六周周末作业班级：姓名：家长签名：等级：
一、填表。

二、解决问题。

1、一个半径10米的圆形花坛，它的占地面积是多少？在它的一周围一圈篱笆，篱笆长多少米？
2、一种自行车轮胎的外直径60厘米，小红骑车车轮每分钟转动100周。

她骑车每分钟行使多少米？
3、小军用一根30米长的绳子测一棵树的直径，在树干上绕了10圈多了1.74米。

这棵树的直径大约多少米？
4、学校圆形大钟的时针长75厘米，它的针尖转动一周走过的路程是多少米？
5、用26米长的篱笆围成一个圆形苗圃，篱笆接头处用去0.88米。

苗圃的面积多少？
6、求右图阴影部分面积：（单位：厘米）
7、求各图的周长和面积：（单位：米）。

2013年6月英语六级真题答案【修改版】

Section A47.motivation and practice48.leisure time 49.musicians and dancers50.treated as special51.the key factorSection BPassage one 52.A. It is more comfortable and convenient.53.C. They had no chance to touch them when shopping.54.To test his hypothesis about online shopping.55.B. More motivated to own it.56.D. Physical touch helps form a sense of possession.Passage two57.A) They can attract people’s attention to their reports.58.D) There is no way to prove its validity.59.A) Demand for food has been rising in the developing countries.60.C) It has dropped greatly.61.B) They do a disservice to addressing the problem.完形填空答案及解析：62.C. terrifies 考查动词辨析。

exhaust 表示“使筋疲力尽，用尽”；suppress 表示“镇压，抑制”；terrify 表示“使惊吓”；disgust 表示“使反感”。

前文表明关于气候变暖的惊悚报道让我们感到恐惧，更糟糕的是，它吓到了我们的孩子们。

63.D. depicted 考查动词辨析。

dismiss 表示“开除，解散”；distract 表示“使分心，分散”；deposit 表示“储蓄，寄存”；depict 表示“描绘，描述”。

2013年6月大学英语六级真题和答案

2013年6月大学英语六级真题Part I Writing (30 minutes)Directions: For this part, you are allowed 30 minutes to write an essay commenting on the remark "A smile is the shortest distance between two people." You can cite examples to illustrate your point. You should write at least 150 words but no more than 200 words.________________________________________________________________________________________________________________________________________________________________________________________________注意：此部分试题在答题卡1Part II Reading Comprehension (Skimming and Scanning) (15 minutes) Directions: In this part, you will have 15 minutes to go over the passage quickly and answer the questions on Answer Sheet 1. For questions 1-7, choose the best answer from the four choices marked A) , B) , C) and D) . For questions 8-10, complete the sentences with the information given in the passage.Norman Borlaug: 'Father of the Green Revolution'Few people have quietly changed the world for the better more than this rural lad from the midwestern state of Iowa in the United States. The man in focus is Norman Borlaug, the Father of the 'Green Revolution', who died on September 12, 2009 at age 95. Norman Borlaug spent most of his 60 working years in the farmlands of Mexico, South Asia and later in Africa, fighting world hunger, and saving by some estimates up to a billion lives in the process. An achievement, fit for a Nobel Peace Prize. Early Years"I'm a product of the great depression" is how Borlaug described himself. A great-grandson of Norwegian immigrants to the United States, Borlaug was born in 1914 and grew up on a small farm in the northeastern corner of Iowa in a town called Cresco. His family had a 40-hectare (公顷) farm on which they grew wheat, maize (玉米) and hay and raised pigs and cattle. Norman spent most of his time from age 7-17 on the farm, even as he attended a one-room, one-teacher school at New Oregon in Howard County.Borlaug didn't have money to go to college. But through a Great Depression era programme, known as the National Youth Administration, Borlaug was able to enroll in the University of Minnesota at Minneapolis to study forestry. He excelled in studies and received his Ph.D. in plant pathology (病理学) and genetics in 1942. From 1942 to 1944, Borlaug was employed as a microbiologist at DuPont in Wilmington. However, following the December 7, 1941 attack on Pearl Harbor, Borlaug tried to join the military, but was rejected under wartime labour regulations. In Mexico In 1944, many experts warned of mass starvation in developing nations where populations were expanding faster than crop production. Borlaug began work at a Rockefeller Foundation-funded project in Mexico to increase wheat production by developing higher-yielding varieties of the crop. It involved research in genetics, plantbreeding, plant pathology, entomology (昆虫学) , agronomy (农艺学) , soil science, and cereal technology. The goal of the project was to boost wheat production in Mexico, which at the time was importing a large portion of its grain.Borlaug said that his first couple of years in Mexico were difficult. He lacked trained scientists and equipment. Native farmers were hostile towards the wheat programme because of serious crop losses from 1939 to 1941 due to stem rust.Wheat varieties that Borlaug worked with had tall, thin stalks. While taller wheat competed better for sunlight, they had a tendency to collapse under the weight of extra grain - a trait called lodging. To overcome this, Borlaug worked on breeding wheat with shorter and stronger stalks, which could hold on larger seed heads. Borlaug's new semi-dwarf, disease-resistant varieties, called Pitic 62 and Penjamo 62, changed the potential yield of Mexican wheat dramatically. By 1963 wheat production in Mexico stood six times more than that of 1944. Green Revolution in India During the 1960s, South Asia experienced severe drought condition and India had been importing wheat on a large scale from the United States. Borlaug came to India in 1963 along with Dr. Robert Anderson to duplicate his Mexican success in the sub-continent. The experiments began with planting a few of the high-yielding variety strains in the fields of the Indian Agricultural Research Institute at Pusa in New Delhi, under the supervision of Dr. M. S. Swaminathan. These strains were subsequently planted in test plots at Ludhiana, Pantnagar, Kanpur, Pune and Indore. The results were promising, but large-scale success, however, was not instant. Cultural opposition to new agricultural techniques initially prevented Borlaug from going ahead with planting of new wheat strains in India. By 1965, when the drought situation turned alarming, the Government took the lead and allowed wheat revolution to move forward. By employing agricultural techniques he developed in Mexico, Borlaug was able to nearly double South Asian wheat harvests between 1965 and 1970.India subsequently made a huge commitment to Mexican wheat, importing some 18000 tonnes of seed. By 1968, it was clear that the Indian wheat harvest was nothing short of revolutionary. It was so productive that there was a shortage of labour to harvest it, of bull carts to haul it to the threshing floor (打谷场) , of jute (麻黄) bags to store it. Local governments in some areas were forced to shut down schools temporarily to use them as store houses.United Nation's Food and Agriculture Organization (FAO) observed that in 40 years between 1961 and 2001, "India more than doubled its population, from 452 million to more than 1 billion. At the same time, it nearly tripled its grain production from 87 million tonnes to 231 million tonnes. It accomplished this feat while increasing cultivated grain acreage (土地面积) a mere 8 percent."It was in India that Norman Borlaug's work was described as the 'Green Revolution.' In AfricaAfrica suffered widespread hunger and starvation through the 70s and 80s. Food and aid poured in from most developed countries into the continent, but thanks to the absence of efficient distribution system, the hungry remained empty-stomach. The then Chairman of the Nippon Foundation, Ryoichi Sasakawa wondered why the methods used in Mexico and India were not extended to Africa. He called up NormanBorlaug. now leading a semi-retired life, for help. He managed to convince Borlaug to help with his new effort and subsequently founded the Sasakawa Africa Association. Borlaug later recalled, "but after I saw the terrible circumstances there, I said, 'Let's just start growing'".The success in Africa was not as spectacular as it was in India or Mexico. Those elements that allowed Borlaug's projects to succeed, such as well-organized economies and transportation and irrigation systems, were severely lacking throughout Africa. Because of this, Borlaug's initial projects were restricted to developed regions of the continent. Nevertheless, yields of maize, sorghum (高粱) and wheat doubled between 1983 and 1985.Nobel PrizeFor his contributions to the world food supply, Borlaug was awarded the Nobel Peace Prize in 1970. Norwegian officials notified his wife in Mexico City at 4:00 a. m., but Borlaug had already left for the test fields in the Toluca valley, about 65 km west of Mexico City. A chauffeur (司机) took her to the fields to inform her husband. In his acceptance speech, Borlaug said, "the first essential component of social justice is adequate food for all mankind. Food is the moral right of all who are born into this world. Yet, 50 percent of the world population goes hungry."Green Revolution vs EnvironmentalistsBorlaug's advocacy of intensive high-yield agriculture came under severe criticism from environmentalists in recent years. His work faced environmental and socio-economic criticisms, including charges that his methods have created dependence on monoculture crops, unsustainable farming practices, heavy indebtedness among subsistence farmers, and high levels of cancer among those who work with agriculture chemicals. There are also concerns about the long-term sustainability of fanning practices encouraged by the Green Revolution in both the developed and the developing world.In India, the Green Revolution is blamed for the destruction of Indian crop diversity, drought vulnerability, dependence on agro-chemicals that poison soils but reap large-scale benefits mostly to the American multi-national corporations. What these critics overwhelmingly advocate is a global movement towards "organic" or "sustainable" farming practices that avoid using chemicals and high technology in favour of natural fertilizers, cultivation and pest-control programmes.注意：此部分试题请在答题卡1上作答。

2013年6月英语六级大学英语六级听力真题和答案及听力原文

2013年6月英语六级真题及答案Part III Listening Comprehension (35 minutes)Section ADirections:In this section you will hear 8 short conversations and 2 long conversations. At the end of each conversation, one or more questions will be asked about what was said. Both the conversations and the questions will be spoken only once. After each question there will be a pause. During the pause, you must read the four choices marked A), B), C) and D), and decide which is the best answer. Then mark the corresponding letter on Answer Sheet 2 with a single line through the centre.11. A) She has completely recovered.B) She went into shock after an operation.C) She is still in a critical condition.D) She is getting much better.12. A) Ordering a breakfast.B) Booking a hotel room.C) Buying a train ticket.D) Fixing a compartment.13. A) Most borrowers never returned the books to her.B) The man is the only one who brought her book back.C) She never expected anyone to return the books to her.D) Most of the books she lent out came back without jackets.14. A) She left her work early to get some bargains last Saturday.B) She attended the supermarket’s grand opening ceremony.C) She drove a full hour before finding a parking space.D) She failed to get into the supermarket last Saturday.15. A) He is bothered by the pain in his neck.B) He cannot do his report without a computer.C) He cannot afford to have a coffee break.-D) He feels sorry to have missed the report.16. A) Only top art students can show their works in the gallery.B) The gallery space is big enough for the man’s paintings.C) The woman would like to help with the exibition layout.D) The man is uncertain how his art works will be received.17. A) The woman needs a temporary replacement for her assistant.B) The man works in the same department as the woman does.C) The woman will have to stay in hospital for a few days.D) The man is capable of dealing with difficult people.18. A) It was better than the previous one.B) It distorted th e mayor’s speech.C) It exaggerated the city’s economy problems.D) It reflected the opinions of most economists.Questions 19 to 22 are based on the conversation you have just heard.19. A) To inform him of a problem they face.B) To request him to purchase control desks.C) To discuss the content of a project report.D) To ask him to fix the dictating machine.20. A) They quote the best price in the market.B) They manufacture and sell office furniture.C) They cannot deliver the steel sheets on time.D) They cannot produce the steel sheets needed21. A) By marking down the unit price.B) By accepting the penalty clauses.C) By allowing more time for delivery.D) By promising better after-sales service.22. A) Give the customer a ten percent discount.B) Claim compensation from the stool suppliers.-C) Ask the Buying Department to change suppliers.D) Cancel the contract with the customer.Questions 23 to 25 are based on the conversation you have just heard.23. A) Stockbroker. C) Mathematician.B) Physicist. D) Economist.24. A) Improve computer programming.B) Predict global population growth.C) Explain certain natural phenomena.D) Promote national financial health.25. A) Their different educational backgrounds.B) Changing attitudes toward nature.C) Chaos theory and its applications.D) The current global economic crisis.Section BDirections: In this section you will hear 3 short passages. At the end of each passage, you will hear some questions. Both the passage and the questions will be spoken only once. After you hear a question, you must choose the best answer from the four choices marked A), B), C) and D). Then mark the corresponding letter on Answer Sheet 2 with a single line through the centre.Passage OneQuestions 26 to 28 are based on the passage you have just heard.26. A) They lay great emphasis on hard work.B) They name 150 star engineers each year.C) They require high academic degrees.D) They have people with a very high IQ.27. A) long years of job training.B) High emotional intelligence.C) Distinctive academic qualifications.-D) Devotion to the advance of science.28. A) Good interpersonal relationships.B) Rich working experience.C) Sophisticated equipment.D) High motivation.Passage TwoQuestions 29 to 31 are based on the passage you have just heard.29. A) A diary.B) A fairy tale.C) A history textbook.D) A biography.30. A) He was a sports fan.B) He loved architecture.C) He disliked school.D) He liked hair-raising stories.31. A) Encourage people to undertake adventures.B) Publicize his colorful and unique life stories.C) Raise people’s environmental awareness.D) Attract people to America’s national parks.Passage ThreeQuestions 32 to 35 are based on the passage you have just heard.32.A) The first infected victim.B) A coastal village in Africa.C) The doctor who first identified it.D) A river running through the Congo.33.A) They exhibit similar symptoms.B) They can be treated with the same drug.C) They have almost the same mortality rate.D) They have both disappeared for good.34.A) By inhaling air polluted with the virus.B) By contacting contaminated body fluids.C) By drinking water from the Congo River.D) By eating food grown in Sedan and Zaire.35. A) More strains will evolve from the Ebola virus.B) Scientists will eventually find cures for Ebola.C) Another Ebola epidemic may erupt sooner or later.D) Dose infected, one will become immune to Ebola.Section CDirections: In this section, you will hear a passage three times. When the passage is read for the first time, you should listen carefully for its general idea. When the passage is read for the second time, you are required to fill in the blanks numbered from 36 to 43 with the exact words you have just heard. For blanks numbered from 44 to 46 you are required to fill in the missing information. For these blanks you can write the exact words you have just heard or write down the main points in your own words. Finally when the passage is read for the third time, you should check what you have written.The ideal companion machine would not only look, feel, and sound friendly but would also be programmed to behave in an agreeable manner. Those (36)___ that make interaction with other people enjoyable would be simulated as closely as possible, and the machine would appear to (37)___ stimulating and easygoing. Its informal conversation style would make interaction comfortable, and yet the machine would remain slightly (38)___ and therefore interesting. In its first (39)___ it might be somewhat honest and unsmiling that it came to know the user it would progress to a mere (40)___ and intimate style. The machine would not be a passive (41)___ but would add its own suggestions, information, and opinions; it would sometimes take the (42)___ in developing or changing the topic and would have a (43)___ of its own.The machine would convey presence. We have all seen how a computer’s use of personalnames (44) ___. Such features are wholly written into the software (45) ___. Friendships are not made in a day, and the computer would be more acceptable as a friend (46) ___. At an appropriate time I might also express the kind of affection that simulates attachment and intimacy.答案Part III Listening Comprehension Section A 短对话Directions: In this section, you will hear 8 short conversations and 2 long conversatio ns. At the end of each conversation, one or more questions will be asked about what was said. Both the conversation and the questions will be spoken only once. After eac h question there will be a pause. During the pause, you must read the four choices ma rked A), B), C) and D), and decide which is the best answer. Then mark the correspo nding letter on Answer Sheet 2 with a single line through the centre. 11.W: What's wrong with your phone, Gary? I tried to call you all night yesterday. M: I' m sorry. No one's able to get through yesterday. My telephone was disconnected by t he phone company.Q: What does the woman ask the man about? 12.W: I finally found a really nice apartment that's within my price range. M: Congratul ations! Affordable housing is rare in this city. I've been looking for a suitable place si nce I got here six months ago. Q: What does the man mean? 13.M: I got this in my mailbox today, but I don't know what it is. Do you have any idea?W: Oh, that's your number for the new photocopier. It acquires an access code. Every one got one.Q: What do we learn from the conversation?14.W: Jane told me that you'll be leaving at soon. Is it true?M: Yeah, my wife's maternity leave is close to an end. And since she wants to go bac k to work, I've decided to take a year off to raise the baby. Q: What does the man mean? 15M: We'll never find a parking space here. What about dropping you at thesouth gate a nd I'll find parking somewhere else.W: Well, OK. It looks like everyone in town came to the mall today. Q: What does th e woman mean? 16W: When will the computers be back online?M: Probably not until tomorrow. The problem is more complicated than I thought. Q: What does the man mean? 17M: Did you catch Professor Smith on TV last night?W: I almost missed it, but my mother just happened to be watching at home and gave me a call.Q: What does the woman imply? 18M: May I get this prescription refilled?W: I'm sorry, sir, but we can't give you a refill on that. You'll have to get a new prescr iption.Q: What can we infer from the conversation?Conversation OneW: Well, it’s the South Theater Company. They want to know if we’d be interested in sponsoring a tour they want to make to East Asia. M: East Asia? uhh… and how mu ch are they hoping to get from us?W: Well, the letter mentions 20,000 pounds, but I don’t know if they might settle for us.M: Do they say what they would cover? Have they anything specific in mind?W: No, I think they are just asking all the firms in tongue for as much money as they think they’ll give.M: And we are worth 20, 000 pounds, right? W: It seems so.M: Very flattering. But I am not awfully happy with the idea. What we get out of it?W: Oh, good publicity I suppose. So what I suggest is not that we just give them a su m of money, but that we offer to pay for something specific like travel or something, and that in return, we ask for our name to be printed prominently in the program, and that they give us free advertising space in it.M: But the travel bill would be enormous, and we could never manage that. W: I kno w. But why don’t we offer to pay for the printing of the programs ourselves on condit ion that on the front cover there's something like This program is presented with the c ompliments of Norland Electronics, and free advertising of course.M: Good idea. Well, let’s get back to them and ask what the program they want will c ost. Then we can see if we are interested or not.Questions 19-21 are based on the conversation you have just heard. 19. What do we l earn about the South Theater Company?20. What benefit does the woman say their firm can get by sponsoring the Theater Co mpany?21. What does the woman suggest they do instead of paying the South Theater Comp any’s travel expenses? Conversation TwoW: Rock stars now face a new hazard --- voice abuse. After last week's announcemen t that Phil Collins might give up touring because live concerts are ruining his voice, d octors are counseling stars about the dos and don'ts of voice care. Here in the studio t oday, we have Mr. Paul Phillips, an expert from the High Field Hospital. Paul, what a dvice would you give to singers facing voice problems?M: If pop singers have got voice problems, they really need to be more selectiveabou t where they work. They shouldn't work in smoky atmospheres. They also need to thi nk about resting their voices after a show. Something else they need to be careful abo ut is medicines. Aspirin, for example, singers should avoid aspirin. It thins the blood. And if a singer coughs, this can result in the bruising of the vocal cords.W: And is it true that some singers use drugs before concerts to boost their voices wh en they have voice problems?M: Yes, this does happen on occasion. They are easily-available on the continent and they are useful if a singer has problems with his vocal cords and has to sing that night . But if they are taken regularly, they cause a thinning of the voice muscle. Most pop singers suffer from three things: lack of training, overuse and abuse of the voice, espe cially when they are young. They have difficult lives. When they go on tour, they do a vast number of concerts, singing in smoky places.W: So, what would you advise the singers to do?M: Warm you voice up before a show and warm it down after.Questions 22-25 are based on the conversation you have just heard.22. What does last week's announcement say about rock star, Phil Collins?23. What does Paul Philips say about aspirin?24. What does Paul Philips say about young pop singers? 25. What are the speakers mainly talking about?Passage 1Would you trust a robot to park your car? The question will confront New Yorkers in February as the city's first robotic parking opens in Chinatown. The technology has b een successfully applied overseas, but the only other public robotic garage in the Unit ed States has been troublesome, dropping vehicles and trapping cars because of techn ical problems.Nonetheless, the developers of the Chinatown garage are confident with the technolo gy and are counting on it to squeeze 67 cars in an apartment-building basement that would otherwise fit only 24, accomplished by removing a maneuver space normally r equired.A human-shaped robot won't be stepping into your car to drive it. Rather, the garage i tself does the parking. The driver stops the car on a flat platform and gets out. The pl atform is lowered into the garage, and it is then transported to a vacant parking space by a computer-controlled device similar to an elevator that also runs sideways. There is no human supervision, but an attendant will be on hand to accept cash and explain the system to newly users. Parking rates will be attracted about $400 monthly or $25 per day, according to Ari Milstein, the director of planning for Automation Par king Systems, which is the U.S. subsidiary of a German company. This company has built automated garages in several countries overseas and in the United States for resi dents of a Washington, D.C. apartment building.Questions 26 to 29 are based on the passage you have just heard.26. What do we learn about the robot parking in the U.S. so far?27. What advantage does robotic parking have according to the developers?28. What does the attendant do in the automated garage?29. What does the company say about the parking rate?Passage 2A recent study shows that meat consumption is one of the main ways that human can damage the environment, second only to the use of motor vehicles. So how can eatin g meat have a negative effect on the environment? For a start, all animals, such as co ws, pigs and sheep, always gas limed methane, which is the second most common gr een house gas after carbon dioxide. Manyenvironmental experts now believe that methane is more responsible for global warm ing than carbon dioxide. It is estimated that 25% of all methane that released into the atmosphere coming from farm animals. Another way in which meat production affect s the environment is through the use of water and land. 2,500 gallons of water are nee ded to produce one pound of beef. While 20 gallons of water are need to produce one pound of wheat. One acre of farmland use to for raising cows can produce 250 poun ds of beef. One acre of farmland use to for crop production can produce 1,500 pound s of tomatoes. Many people now say the benefits of switching to vegetarian diet whic h excludes meat and fish. Not just for health reasons, but also because it plays a vital role in protecting the environment. However, some nutritionists advise against switch ing to a totally strict vegetarian diet. They believe such a diet which includes no prod ucts from animal sources can be deficient in many of the necessary vitamins and minerals our bodies need. Today many people have come to realize that help the environ ment and for the human race to survive, more of us will need to become vegetarian. Questions 30 to 32 are based on the passage you've just heard.30. What does the recent study show?31. What do some nutritionists say about the strict vegetarian diet?32. What does the speaker think more people need to do?Passage 3Alcoholism is a serious disease. Nearly nine million Americans alone suffer from the illness. Many scientists disagree about what the differences are between the alcohol a ddict and social drinker. The difference occurs when someone needs to drink. And thi s need gets in the way of his health or behavior. Alcohol causes a loss of judgment an d alertness. After a long period, alcoholism can deteriorate the liver, the brain and oth er parts of the body. The illness is dangerous, because it is involved in half of all auto mobile accidents. Another problem is that the victim often denies being an alcohol ad dict and won’t get help. Solutions do exist. Many hospitals and centers help patients cope. Without the assistance, the victim can destroy his life. He would detach himself from the routines of life. He may lose his employment, home or loved ones.All the causes of the sickness are not discovered yet. There is no standard for a perso n with alcoholism. Victims range in age, race, sex and background. Some groups of p eople are more vulnerable to the illness. People from broken homes and North Ameri can Indians are two examples. People from broken homes often lack stable lives. Indi ans likewise had the traditional life taken from them by white settlers who often enco urage them to consume alcohol to prevent them from fighting back. The problem has now been passed on. Alcoholism is clearly present in society today. People have start ed to get help and information. With proper assistance, victims can put their lives tog ether one day.Question 33 to 35 are based on the passage you have just heard.Q33. What is the problem of the victims about alcoholism according to the speaker?Q34. Why did white settlers introduce alcohol to Indians?Q35. What does the speaker seem to believe about those affected by alcoholism?复合式听写Self-image is the picture you have of yourself, the sort of person you believe you are. Included in your self-image are the categories in which you place yourself, the roles you play and other similar descriptors you use to identify yourself. If you tell an acqu aintance you are a grandfather who recently lost his wife and who does volunteer wor k on weekends, several elements of your self-image are bought to light — the roles o f grandparent, widower and conscientious citizen. But self-image is more than how y ou picture yourself; it also involves how others see you. Three types of feedback fro m others are indicative of how they see us: conformation, rejection, and disconfirmati on. Conformation occurs when others treat you in a manner consistent with who you believe you are.You believe you have leadership abilities and your boss put you in ch arge of a new work team. On the other hand, rejection occurs when others treat you i n a manner that is inconsistent with yourself definition. Pierre Salinger was appointe d senator from California but subsequently lost his first election. He thought he was a good public official, but the voters obviously thought otherwise— Their vote was in consistent with his self-concept. The third type of feedback is disconfirmation, which occurs when others fail to respond to your notion of self by responding neutrally. A s tudent writes what he thinks is an excellent composition, but the teacher writes no en couraging remarks. Rather than relying on how others classify you, consider how you identify yourself. The way in which you identify yourself is the best refection of you rself-image.ce.。

2012--2013(上)高三(7)数学周六考试试题2(答案)

2012~2013（上）高三(7)数学周六考试试题2（答案）命题人:张开桃姓名：一.选择题：本大题共10小题，每小题5分，共50分1. 设集合{|1A x =-≤x ≤2},B=},04|{2R x x x x ∈>-,则)(B C A R ⋂= （ B ）A.［1,2］B.［0,2］C. ［1,4］D.［0,4］2. 已知{a n }是等比数列，21,474==a a ,则公比q= （ D ） A.21-B.-2C.2D.213.设变量,x y 满足约束条件⎪⎩⎪⎨⎧≤-≥+-≥-+01042022x y x y x ,则目标函数x y z 32-=的最大值为（ C ） A ．-3 B ．2C ．4D ．54. 函数()230x y x =+>的反函数为（ C ）A ．()23log 42x y x -=> B ．()()2log 33y x x =->C ．()()2log 34y x x =->D ．()23log 32xy x -=>5. 若正数y x ,满足3039422=++xy y x ,则xy 的最大值是（ C ）A ．34 B ．35 C ．2D ．45 6. A 为三角形的内角，则23cos 21sin <>A A 是的（ A ）A.充分不必要条件B.必要不充分条件C. 充要条件D.既不充分也不必要条件 7. 函数()3233f x x x =--在区间[]0,3上的值域是（ A ）A. []7,3--B. {}3-C. []5,3--D. []10,3-- 8.若]2,0[0)sin()32cos(πϕωπ∈≤+⋅-x x x 对恒成立，其中=⋅-∈>ϕωππϕω则),,[,0（ A ）A. 35π- B ．32π- C ．32π D. 34π9. 将函数sin 2y x =的图象向左平移4π个单位，再向上平移1个单位，所得图象的解析式是（B ）A. cos 2y x = B ．22cos y x = C ．1sin 24y x π⎛⎫=++⎪⎝⎭D ．22sin y x =错误!链接无效。

河北省衡水中学2013届高三第六次模拟考试数学(文)试题 Word版含答案

2012—2013学年度下学期第六次模拟考试高三数学(文科试卷)注息事项:1.本试卷分第Ⅰ卷（选择题）和第Ⅱ卷(非选择题)两部分。

答卷前，考生务必将自己的姓名、准考证号填写在本试卷和答题卡相应位置上。

2.做答第Ⅰ卷时。

选出每小题答案后，用铅笔把答题卡上对应题目的答案标号涂黑。

如需改动.用橡皮擦干净后，再选涂其它答案标号。

写在本试卷上无效.3.回答第Ⅱ卷时。

将答案写在答题卡上.写在本试卷上无效·第Ⅰ卷一、选择题：本大题共12小题，每小题5分，在每小题给出的四个选项中，只有一项是符合题目要求的。

1．设集合}21|{≤≤-=x x A ，}40|{≤≤=x x B ，则=⋂B A （）A.}20|{≤≤x xB. }21|{≤≤x xC. }40|{≤≤x xD. }41|{≤≤x x 2．命题“对01,23≤+-∈∀x x R x ”的否定是（） A ．不存在x∈R,x 3－x 2＋1≤0 B.01,23≤+-∈∃x x R x C ．01,23>+-∈∃x x R xD.01,23＞+-∈∀x x R x3．如果复数mii m ++1)(2是实数，则实数=m （）A.1-B. 1C. 2-D.2 4．若为第三象限角，则αααα22cos 1sin 2sin 1cos -+-的值为（）A.-3B. -1C. 1D. 35.已知双曲线)0,0(12222>>=-b a by a x 的右焦点为F ，若过点F 且斜率为33的直线与双曲线的渐近线平行，则此双曲线的离心率为（） A.332 B.3 C. 2 D.32 6.利用如图所示的程序框图在直角坐标平面上打印一系列的点，则打印的点落在坐标轴上的个数是（）A.0B. 1C. 3D. 47. 设椭圆22221(00)x y m n m n +=>>，的右焦点与抛物线28y x =的焦点相同，离心率为12，则此椭圆的方程为（）A ．2211216x y +=B ．2211612x y +=C ．2214864x y +=D ．2216448x y +=8．如图，正方体1AC 的棱长为1，过点A 作平面BD A 1的垂线，垂足为H ．则以下命题中，错误．．的命题是（） A ．点H 是BD A 1∆的垂心 B ．AH 垂直平面11D CB C ．AH 的延长线经过点1C D ．直线AH 和1BB 所成角为045 9．函数)2||,0(),)(sin()(πφφ<>∈+=w R x wx x f 的部分图像如图所示，如果)3,6(,21ππ-∈x x ，且)()(21x f x f =，则=+)(21x x f （） A ．21B ．22C ．23D ．110．在ABC ∆中, AM AC AB 2=+， 1AM =,点P 在AM 上且满足PM AP 2=,则()PA PB PC ⋅+等于( )A ．49B ．43C ．43-D ．49-11．如图所示，墙上挂有一边长为a 的正方形木板，它的四个角的空白部分都是以正方形的顶点为圆心，半径为2a的圆弧，某人向此板投镖，假设每次都能击中木板，且击中木板上每个点的可能性都一样，则他击中阴影部分的概率是（） A ．41π- B ．4π C ．81π-D ．与a 的取值有关12.数列}{n a 满足)(11*1112N n a a a a a n n n n ∈=+=-=-+++，当[)1,+∈n n a a x 时，2)(-=n a x f ，则方程x x f =)(2的根的个数为（）A ．0B ．1C ．2D ．3xy O6π-3π1第Ⅱ卷本卷包括必考题和选考题两部分。

高三年级学业水平模拟卷6参考答案

2013学年第二学期高三年级学业水平模拟考试听力现在开始，请同学们做好准备！I. Listening Comprehension (共10分)Section A （共6分，每小题2分）Direction: In Section A, you will hear one short passage, and you will be asked three questions on the passage. The passage will be read twice, but the question will be spoken only once. When you hear a question, read the four possible answers on your paper and decide which one would be the best answer to the question you have heard.Question 1 through 3 are based on the following passage.Cheese-rolling has been a tradition in the town of Brockworth since the early 1800s. But what happens in this old and locally **petition? It’s quite simple, really. First, ****e together at the top of a hill named “Cooper’s Hill.” The slope of the hill is very steep — almost 45 degrees!Then they wait for someone to push a very large wheel of cheese down the hill. **petitors then run very quickly after it. The cheese may reach up to 40 miles per hour. **petitors go pretty fast, to o! The first one to the bottom of the hill wins. What’s the prize for such an unusual event? It’s the wheel of cheese — of course!Many people enjoy the cheese-rolling races of Brockworth. However, the race can be dangerous. You never know the route the cheese will take as it rolls down the hill. A few years ago, 30 people were injured in an accident at a race. One of the cheeses rolled down the hill too quickly and suddenly went into the crowd. Some of the spectators were hit by the cheese. Now, **petition route has crash barriers. They protect the crowd from the cheese —and from **petitors!It’s not just the spectators who get injured, **petitors do as well. This is especially true when the weather is very cold. There are also more injuries when there ha sn’t been much rain before the race. One organizer for the event explains, “It’s when the ground is really hard ... that’s when the injuries are going to happen.”But the hard ground doesn’t seem to stop **petitors. Every year there are a lot of people wh o keep on going down Cooper’s Hill. So what drives these runners? What makes them do it? Are they crazy? The cheese racers of Brokworth may be crazy. However the crowds keep on cheering, and **petitors keep on running —year after year. It seems that a lot of people are very happy to try this dangerous run. Is it for the fame? Is it for the fun? We may never know, but you can almost be sure of one thing; it’s not only for the prize. It’s more than just cheese that makes people want to win Brockworth’s annual cheese-rolling race!Questons:1.How fast may the cheese reach up to?2.Who will win the cheese-rolling?3.Which of the following statements is true according to the passage?Section B （共4分，每小题1分）Directions: In Section B, you will hear one conversation. The conversation will be read twice.After you hear the conversation, you are required to fill in the numbered blanks with the information you have heard. Write your answers on your answer sheet.Blanks 4 through 7 are based on the following conversation.Complete the form. Write ONE WORD for each blank.W : Good morning Sir. May I help you?M : Good morning! I need a room.W : Do you require a single or double room?M : Well. A single room will do.W : Please fill your name in this register.M : May I know the rent please?W : It is $45 a day sir.M : Does it include breakfast?W : No Sir. It’s just for accommodation, Sir.M : Is the room air conditioned?W : All our room is centrally air conditioned.M : Do you have restaurant?W : We have three different restaurants.M : Well, that's good news. I can choose one from them for my meals.W : May I know the duration of the stay?M : Oh! I have not filled the column. I shall stay for four days.W : I shall fill it up, Sir.M : By the way do you have laundry facility here?W : Yes Sir. Please call up the house keeping department and they will have the clothes picked up Sir.M : How do I get the extension phone number for all departments?W : Sir, all the house phone numbers are in a diary right near the telephone.M : Oh! That will do. Thank you. You have been very helpful.W : My pleasure sir. I am here to help you.M : Thanks. Well I am rather tired. Can you arrange some one to bring my luggage to the room? W : Certainly Sir. Here’s y our key.M : Thank you very much.W : You're welcome Sir.听力到此结束，请同学们继续答题！I. Listening Comprehension (共10分)Section A （共6分，每小题2分）Key：1-3 BCC 4. single 5. air-conditioned 6. laundry 7. extensionII. Grammar and Vocabulary (共30分)Section A (共10 分，每小题1 分)8-12 ABBCB 13-17 CACDASection B (共10 分，每小题1 分)18. historical 19. divided 20. liveliness 21. culture 22. different 23. addition 24. center 25. attract 26. energy 27. designersSection C (共10 分，每小题1 分)28-32 ADBBC 33-37DCADCIII. Reading Comprehension (共30分)Section A (共22分，每小题2分)38-40 CBD41-44 BDAB45-48 CDCDSection B(共8分，每小题2分)49. light and sound 50. Heritage Gardens 51. six 52. scale thrilling treehouses, clamber over suspended bridges and spider nets for a life-size experience of natureIV. Writing (共30分)Section A (共6分，每小题2分)53. find effective ways to **e the difficulties54. take on a new look55. what you need to do mostSection B (共9分，56小题4分，57小题5分)56. Tired of noisy big cities, more and more people are longing for a peaceful life in the countryside.57. Many people take physical exercise not only to keep healthy, but also to relievepressure/stress.Section C (共15分)略。

2013.6六级试卷试卷部分试题及答案

2013年6月6级部分答案2013-6-1611.W: What's wrong with your phone, Gary? I tried to call you all night yesterday.M: I'm sorry. No one's able to get through yesterday. My telephone was disconnected by the phone company.Q: What does the woman ask the man about?12.W: I finally found a really nice apartment that's within my price range.M: Congratulations! Affordable housing is rare in this city. I've been looking for a suitable place since I got here six months ago.Q: What does the man mean?13.M: I got this in my mailbox today, but I don't know what it is. Do you have any idea?W: Oh, that's your number for the new photocopier. It acquires an access code. Everyone got one.Q: What do we learn from the conversation?14.W: Jane told me that you'll be leaving at soon. Is it true?M: Yeah, my wife's maternity leave is close to an end. And since she wants to go back to work, I've decided to take a year off to raise the baby.Q: What does the man mean?15M: We'll never find a parking space here. What about dropping you at thesouth gate and I'll find parking somewhere else.W: Well, OK. It looks like everyone in town came to the mall today.Q: What does the woman mean?16W: When will the computers be back online?M: Probably not until tomorrow. The problem is more complicated than I thought.Q: What does the man mean?17M: Did you catch Professor Smith on TV last night?W: I almost missed it, but my mother just happened to be watching at home and gave me a call.Q: What does the woman imply?18M: May I get this prescription refilled?W: I'm sorry, sir, but we can't give you a refill on that. You'll have to get a new prescription. Q: What can we infer from the conversation?【听力原文】M: So what’s the next thing on the agenda, Mary?W: Well, it’s the South Theater Company. They want to know if we’d be interested in sponsoring a tour they want to make to East Asia.M: East Asia? uhh… and how much are they hoping to get from us?W: Well, the letter mentions 20,000 pounds, but I don’t kno w if they might settle for us. M: Do they say what they would cover? Have they anything specific in mind?W: No, I think they are just asking all the firms in tongue for as much money as they think they’ll give.M: And we are worth 20, 000 pounds, right?W: It seems so.M: Very flattering. But I am not awfully happy with the idea. What we get out of it?W: Oh, good publicity I suppose. So what I suggest is not that we just give them a sum of money, but that we offer to pay for something specific like travel or something, and that in return, we ask for our name to be printed prominently in the program, and that they give us free advertising space in it.M: But the travel bill would be enormous, and we could never manage that.W: I know. But why don’t we offer to pay for the printing of the programs ourselves on condition that on the front cover there's something like This program is presented with the compliments of Norland Electronics, and free advertising of course.M: Good idea. Well, let’s get back to them and ask what the program they want will cost. Then we can see if we are interested or not.Questions 19-21 are based on the conversation you have just heard.19. What do we learn about the South Theater Company?20. What benefit does the woman say their firm can get by sponsoring the Theater Company?21. What does the woman suggest they do instead of paying the South Theater Company’s travel expenses?【总评】这是一篇关于sponsorship（赞助）的商务对话。

2013年英语六级真题及答案汇总(完整文字版)

DUANG~~DUANG~~DUANG~~，又到一年CET。

说到四六级，你第一反应是裸考刷分？还是abandon？是单词书本？还是逝去的青春？考过的，满满都是回忆；将要考的，给你们加油鼓劲！2013年英语六级真题及答案汇总目录2013年6月英语六级真题及答案 (2)2013年12月英语六级真题及答案 (25)（为了这份资源，我也蛮拼的）2013年6月英语六级真题及答案Part ⅡListening ComprehensionSection A1. CM: The biological project is now in trouble. You know, my colleague and I have completely different ideas about how to proceed.W: Why don’t you compromise? Try to make it a win-win situation for you both.Q: What does the woman suggest the man do?【听前预测】1．四项均以动词原形开头。

2．两项提到同事(colleague)。

结论：对话应该是工作场景，可能提问接下来要怎么做或建议某人做什么。

2．BM: How does Nancy like the new dress she bought in Rome?W: She said she would never have bought an Italian style dress if she had known Mary had already got such a dress.Q: What do we learn from the conversation?【听前预测】1．四项提及两个人物——Mary和Nancy。

2．三项均与服饰、时尚有关(style，dress，fashion)，两项与购物有关(buying，shopping)。

周末练习参考答案

周末练习参考答案周末练习参考答案周末是人们放松身心的时光，也是进行各种活动的好时机。

而其中一项常见的活动就是练习，不论是学生还是职场人士，都需要通过练习来提升自己的技能和能力。

本文将为大家提供一些周末练习的参考答案，希望能够帮助大家更好地利用周末时间。

首先，对于学生来说，周末是他们提升学习成绩的重要时间段。

针对不同科目的学习，学生可以选择不同的练习方式。

比如，对于语文和英语，可以通过阅读和写作来提高自己的语言表达能力。

可以选择一本自己感兴趣的书籍，读完后写读书笔记或者写一篇读后感，这样可以锻炼自己的阅读理解和写作能力。

对于数学和理科类科目，可以通过做题来巩固知识点。

可以选择一些习题册或者在线学习平台，按照自己的学习进度进行练习。

此外，还可以参加一些学科竞赛或者辅导班，通过与其他同学的交流和竞争，进一步提高自己的学习水平。

对于职场人士来说，周末练习可以帮助他们提升职业技能和扩展知识面。

首先，可以选择参加一些专业培训课程或者研讨会。

这样可以学习到最新的行业动态和知识，与其他从业者进行交流，拓宽自己的眼界。

此外，可以通过阅读相关的专业书籍和文章来提升自己的专业知识。

可以选择一些与自己工作相关的书籍，深入了解行业内的专业知识和经验。

另外，可以参与一些项目或者团队活动，通过实践来提升自己的实际操作能力和团队合作能力。

除了学习和工作方面的练习，周末还可以进行一些身体锻炼和兴趣爱好的练习。

对于身体锻炼，可以选择去健身房进行有氧运动和力量训练，也可以选择户外运动如跑步、骑行等。

这样可以提高身体素质和健康水平。

对于兴趣爱好方面的练习，可以选择练习乐器、绘画、摄影等。

这样可以培养自己的艺术修养和审美能力。

总之，周末练习是提升自己的重要方式之一。

通过选择适合自己的练习方式和内容，可以在周末时间里提高自己的技能和能力。

不论是学生还是职场人士，都应该充分利用周末时间，不断提升自己。

希望本文提供的周末练习参考答案能够对大家有所启发和帮助。

周练六(含答案)

高三物理周练试题一、选择题（本题共 8 小题，每小题 6 分，在每小题给出的四个选项中，第 1～5题只有一项符合题目要求，第 6～8题有多项符合题目要求，全部选对的得 6 分，选对但不全的得 3 分，有选错的得 0 分。

）1．(2013海南卷)科学家关于物体运动的研究对树立正确的自然现象具有重要作用。

下列说法不符合历史事实的是（A ）A ．亚里士多德认为，必须有力作用在物体上，物体的运动状态才会改变B ．伽利略通过“理想实验”得出结论：运动必具有一定速度，如果它不受力，它将以这一速度永远运动下去C ．笛卡儿指出：如果运动中的物体没有受到力的作用，它将继续以同一速度沿同一直线运动，既不停下来也不偏离原来的方向D ．牛顿认为，物体具有保持原来匀速直线运动状态或静止状态的性质 2．（2014北京18）应用物理知识分析生活中的常见现象，可以使物理学习更加有趣和深入。

例如平伸手掌托起物体，由静止开始竖直向上运动，直至将物体抛出。

对此现象分析正确的是（D ）A ．手托物体向上运动的过程中，物体始终处于超重状态B ．手托物体向上运动的过程中，物体始终处于失重状态C ．在物体离开手的瞬间，物体的加速度大于重力加速度D ．在物体离开手的瞬间，手的加速度大于重力加速度3．如图所示，位于水平桌面上的物块P 质量为2m ，由跨过定滑轮的轻绳与质量为m 的物块Q 相连，从滑轮到P 和到Q 的两段绳都是水平的。

已知Q 与P 之间以及P 与桌面之间的动摩擦因数都是μ，滑轮的质量、滑轮轴上的摩擦都不计。

若用一水平向右的力F 拉Q 使它做匀速运动，则F 的大小为（ C ） A ．mg μ3 B ．mg μ4 C ．mg μ5 D ．mg μ64．（2014重庆5）以不同初速度将两个物体同时竖直向上抛出并开始计时，一个物体所受空气阻力可忽略，另一个物体所受空气阻力大小与物体速率成正比。

下列用虚线和实线描述两物体运动的υ-t 图象可能正确的是(D )5．[2013·新课标全国卷Ⅱ] 如图，在固定斜面上的一物块受到一外力F 的作用，F 平行于斜面向上．若要物块在斜面上保持静止，F 的取值应有一定范围，已知其最大值和最小值分别为F 1和F 2(F 2>0)．由此可求出( C )A ．物块的质量B ．斜面的倾角C ．物块与斜面间的最大静摩擦力D ．物块对斜面的正压力 6．（2008宁夏理综，20，6分）一有固定斜面的小车在水平面做直线运动，小球通过细绳与车顶相连。

周末练习6答案

2012-2013学年度斗门一中高一数学周末练习卷（6）答案一、选择题：C C A D A C B A B C二、填空题： 11．（2）（3）（4） 12．24σ13．0 ，51 14．Input ， i<=n ， s=s*i三、解答题15．（1）原式212329373()1()()482--=--+2132232333()1()()222-⨯⨯-=--+ 223331()()222--=--+12= （2）原式3433log lg(254)23=+⨯+1243log 3lg102=++ 1152244=-++= 16．解：74)7090708060(51=++++=甲x 73)7580706080(51=++++=乙x 104416461451222222=++++=）（甲s 5627313751222222=++++=）（乙s ∵ 22乙甲乙甲，s s x x >>∴ 甲的平均成绩较好，乙的各门功课发展较平衡17．解：（1）频率为：0.025100.25⨯=，频数：600.2515⨯=（2）0.015100.025100.03100.005100.75⨯+⨯+⨯+⨯=18．21.(Ⅰ)证明：在三角形PBC 中，E 是PC 中点． F 为PB 中点所以 EF//BC ，ABC,EF ABC,面面⊄⊂BC所以ABC //面EF ∴ (Ⅱ)⇒⎩⎨⎧⊂⊥ABC BC ABC PA 面面PA BC ⊥ ......（1）又AB 是⊙O 的直径，所以AC BC ⊥ (2)由（1）（2）得PAC 面⊥BC因 EF//BC PAC BC 面⊥，所以PAC EF 面⊥（Ⅲ）因⊥PA ⊙O 所在的平面，AC 是PC 在面ABC 内的射影，PCA ∠∴即为PC 与面ABC 所成角，045=∠∴PCA ，PA=AC在ABC Rt ∆中，E 是PC 中点，2,4===∠BC AC BAC π3231===∆--PA S V V ABC ABC P PAC B …12分19．（1）法一：函数定义域是R ，因为()f x 是奇函数，所以()()f x f x -=-，即12212121212x x xx x xa a a ---••--==+++ 122x x a a ∴-•=-解得1a =法二：由()f x 是奇函数，所以(0)0f =，故1a =，再由21()12x xf x -=+，验证()()f x f x -=-，来确定1a =的合理性（2）()f x 增函数…………………………………………………………7分法一：因为21()12x x f x x-=+，设设1x ，2x R ∈，且12x x <，得122x x <2。

2013年6月大学英语6级考试真题及答案

2013年6月大学英语6级考试真题Part I Writing (30 minutes)Directions: For this part, you are allowed 30 minutes to write an essay commenting on the remark “A smile is the shortest distance between two people”. You may cite some examples to support your view. You should write at least 150 words but no more than 200 words.注意：此部分试题在答题卡1上作答。

Part II Reading Comprehension (Skimming and Scanning) (15 minutes) Directions:In this part, you will have 15 minutes to go over the passage quickly and answer the questions on Answer sheet 1. For questions 1-7, choose the best answer from the four choices marked A), B), C) and D). For questions 8-10, complete the sentences with the information given in the passage.Welcome, Freshmen. Have an iPod.Taking a step that many professors may view as a bit counterproductive, some colleges and universities are doling out Apple iPhones and Internet-capable iPods to their students.The always-on Internet devices raise some novel possibilities, like tracking where students gather together. With far less controversy, colleges could send messages about canceled classes, delayed buses, campus crises or just the cafeteria menu.While schools emphasize its usefulness —online research in class and instant polling of students, for example — a big part of the attraction is, undoubtedly, that the iPhone is cool and a hit with students. Being equipped with one of the most recent cutting-edge IT products could just help a college or university foster a cutting-edge reputation.Apple stands to win as well, hooking more young consumers with decades of technology purchases ahead of them. The lone losers, some fear, could be professors.Students already have laptops and cell phones, of course, but the newest devices can take class distractions to a new level. They practically beg a user to ignore the long-suffering professor struggling to pass on accumulated wisdom from the front of the room — a prospect that teachers find most irritating and students view as, well, inevitable.“When it gets a little boring, I might pull it out,” acknowledged Naomi Pugh, a first-year student at Freed-Hardeman University in Henderson, Term., referring to her new iPod Touch, which can connect to the Internet over a campus wireless network. She speculated that professors might try even harder to make classes interesting if they were to compete with the devices.Experts see a movement toward the use of mobile technology in education, though they say it is in its infancy as professors try to come up with useful applications. Providing powerful handheld devices is sure to fuel debates over the role of technology in higher education.“We think this is the way the future is going to work,” said Kyle Dickson, co-director of research and the mobile learning initiative at Abilene Christian University in Texas, which has bought more than 600 iPhones and 300 iPods for students entering this fall.Although plenty of students take their laptops t o class, they don’t take them everywhere and would prefer something lighter. Abilene Christian settled on the devices after surveying studentsand finding that they did not like hauling around their laptops, but that most of them always carried a cell phone, Dr. Dickson said.It is not clear how many colleges and universities plan to give out iPhones and iPods this fall; officials at Apple were unwilling to talk about the subject and said that they would not leak any institution’s plans.“We can’t announce other people’s news,” said Greg Joswiak, vice president of iPod and iPhone marketing at Apple. He also said that he could not discuss discounts to universities for bulk purchases.At least four institutions —the University of Maryland, Oklahoma Christian University, Abilene Christian and Freed-Hardeman — have announced that they will give the devices to some or all of their students this fall.Other universities are exploring their options. Stanford University has hired a student-run company to design applications like a campus map and directory for the iPhone. It is considering whether to issue iPhones but not sure it, necessary, noting that more than 700 iPhones were registered on the university’s network last year.At the Massachusetts Institute of Technology, iPhones might already have been everywhere, if A T&T, the wireless carrier offering the iPhone in the United States, had a more reliable network, said Andrew Y u, mobile devices platform project manager at M.I.T.“We would have probably gone ahead wit h this, maybe just getting a thousand iPhones and giving them out,” Mr. Y u said.“The University of Maryland at College Park is proceeding cautiously, giving the iPhone or iPod Touch to 150 students,” said Jeffrey Huskamp, vice president and chief informat ion officer at the university. “We don’t think that we have all the answers,” Mr. Huskamp said. By observing how students use the gadgets, he said, “We’re trying to get answers from the students.”At each college, the students who choose to get an iPhone must pay for mobile phone service. Those service contracts include unlimited data use. Both the iPhones and the iPod Touch devices can connect to the Internet through campus wireless networks. With the iPhone, those networks may provide faster connections and longer battery life than A T&T’s data network. Many cell phones allow users to surf the Web, but only some newer ones are capable of wireless connection to the local area computer network.University officials say that they have no plans to track their students (and Apple said it would not be possible unless students give their permission). They say that they are drawn to the prospect of learning applications outside the classroom, though such lesson plans have yet to surface.“My colleagues and I are st udying something called augmented reality (a field of computer research dealing with the combination of real-world and virtual reality),” said Christopher Dede, professor in learning technologies at Harvard University. “Alien Contact,” for example, is an exercise developed for middle-school students who use hand-held devices that can determine their location. As they walk around a playground or other area, text, video or audio pops up at various points to help them try to figure out why aliens were in the schoolyard.“Y ou can imagine similar kinds of interactive activities along historical lines,” like following the Freedom Trail in Boston, Professor Dede said. “It’s important that we do research, so that we know how well something like this works.”The rush to distribute the devices worries some professors, who say that students are lesslikely to participate in class if they are multi-tasking. “I’m not someone who’s anti-technology, but I’m always worried that technology becomes an end in and of itself, and it replaces teaching or it replaces analysis,” said Ellen Millender, associate professor of classics at Reed College in Portland, Ore. (She added that she hoped to buy an iPhone for herself once prices fall.) Robert Summers, who has taught at Cornell Law School for about 40 years, announced this week — in a detailed, footnoted memorandum — that he would ban laptop computers from his class on Contract Law.“I would ban that too if I knew the students were using it in class,” Professor Summers said of the iP hone, after the device and its capabilities were explained to him. “What we want to encourage in these students is an active intellectual experience, in which they develop the wide range of complex reasoning abilities required of good lawyers.”The experience at Duke University may ease some concerns. A few years ago, Duke began giving iPods to students with the idea that they might use them to record lectures (these older models could not access the Internet).“We had assumed that the biggest focus of these devices would be consuming the content,” said Tracy Futhey, vice president for information technology and chief information officer at Duke.But that is not all that the students did. They began using the iPods to create their own “content,” making audio recordings of themselves and presenting them. The students turned what could have been a passive interaction into an active one, Ms. Futhey said.注意：此部分试题在答题卡1上作答。

大学英语六级(2013年12月考试改革适用)模拟试卷81(题后含答案及解析)

大学英语六级（2013年12月考试改革适用）模拟试卷81(题后含答案及解析)题型有：1. Writing 2. Listening Comprehension 3. 4. Reading Comprehension 5. TranslationPart I Writing1．For tills part, you are allowed 30 minutes to write a short essay entitled On Students’ Evaluation of Teachers following the outline given below. You should write at least 150 words but no more than 200 words.1．近年来，很多大学把学生对教师的评价纳人教学评估体系2．就其利弊，人们观点不一3．我的看法On Students’ Evaluation of Teachers正确答案：On Students’Evaluation of Teachers With the reformation and development of higher education, many universities have adopted the credit system instead of the traditional academic-year system, and changed teacher-centred teaching to student-centred teaching. As a result, teachers are now managed on the basis of students’ evaluation, which has aroused disputes. Many people agree that students’ opinions and evaluations of teachers are crucial to both the teaching process and the teacher-student relationship. For one thing, the teacher may reflect on his teaching, and then change accordingly. For another, mutual understanding is likely to be enhanced. However, many experts worry that some students’ judgements of their teachers are rather subjective, even strongly biased. To make things worse, some students take it as a game—”Anyway, my ideas do not count.”If so, nobody will benefit from the valueless feedback. As far as I’m concerned, students’ views should be taken into account, but not as a decisive factor in evaluation of a teacher. We used to relate the evaluation to the employment of a teacher, but if we take advantage of the evaluation as a guide, things will be much better.Part II Listening ComprehensionSection A听力原文：M: Mara, where were you yesterday evening? I expected to see you at the party. W: Oh, I waited for you at the corner of the street. Then I looked for you at your home. But your grandmother said you were out. Q: What do we know about the woman?2．A．She went to another party yesterday.B．She failed to find the man last night.C．She is trying to find excuses for her fault.D．She visited the man’s grandparents last night.正确答案：B解析：对话中男士问女士昨晚在哪儿，本希望在聚会上见到她；女士回答说昨晚自己在街角处等男士，后来又到男士家找他，结果他的祖母说他出去了。

2012--2013(上)高三(7)数学周六考试试题6

2012~2013（上）宜丰中学高三(7)数学周六考试试题6命题人:张开桃姓名：一.选择题：本大题共10小题，每小题5分，共50分1. 对某商店一个月内每天的顾客人数进行了统计,得到样本的茎叶图(如右图所示),则改样本的中位数、众数、极差分别是 ( )A ．46,45,56B ．46,45,53C ．47,45,56D ．45,47,532. 某几何体的三视图如右图所示，则它的体积是（）A.283π-B.83π-C.82π-D.23π3. 在某种新形材料的研制中，现准备用下列四个函数中的一个近似地表示这些数据的规律，其中最接近的一个是（）A ．y ＝2x －2B ．21(1)2y x =- C ．2log y x = D ．12xy ⎛⎫=⎪⎝⎭4. 过点()1,1-和()0,3的直线在x 轴上的截距为（）A.32-B.32C.3D.3- 5. 已知等差数列{}n a 的前n 项和为n S ，且17812215a a a a +++=，则13S = （） A.104B.78C.52D.396. 若变量,x y 满足约束条件102y x y x y ≤⎧⎪+≥⎨⎪-≤⎩，则2z x y =-的最大值为（）A.1B.2C.3D.47. 若函数1y =与函数()1y f x =-互为反函数，则()f x = （）A.22x e- B.22x e+ C.21x e- D.2xe8. 直三棱柱111ABC A B C -中，若1,2BAC AB AC AA π∠===,则异面直线1A B 与1C A 所成的角等于（）A.6π B.4π C.3π D.2π9 已知(),2,2a b ∈-，且1a b ⋅=-，则224949a b +--的最小值是（） A.85 B.125 C.127 D.241110. 4位同学每人从甲、乙、丙3门课程中选修1门，则恰有2人选修课程甲的概率是（）A.827 B.427 C.38 D.316 二.填空题：本大题共5小题，每小题5分，共25分11. 211i i +⎛⎫= ⎪-⎝⎭12. 已知函数2log ,0()2,0x x x f x x >⎧=⎨≤⎩，若1()2f a =，则a ＝13. 已知：函数()f x =的定义域为A ，2∉A ，则a 的取值范围是 14. 已知数列{}n a 中，()11112,21n n n a a a n a --+==≥-，且3690共有m 个正约数（包含1和自身），则m a = .15. 已知球O 的表面积为8π，A B C ，，是球面上的三点，点M 是AB 的中点，2AB =，1BC =，3ABC π∠=，则二面角M OC B --的正切值为.三.解答题：共75分16. （本小题满分12分）在ABC ∆中, 312cos ,cos ,21513A B AB ===,求ABC ∆的面积.17. （本小题满分12分）如图，四棱锥P ABCD -中，侧面PCD 是边长为2的正三角形，且BP与底面ABCD 垂直，底面ABCD 是面积为ADC ∠为锐角，M 为PB 的中点. (Ⅰ)求证：PA CD ⊥；(Ⅱ)求PD 与平面CDM 所成的角的正弦值.18. （本小题满分12分）已知函数()0)f x ax x =+≥，且函数f （x ）与g （x）的图象关于直线y ＝x 对称，又g （1）＝0，f 2（1）求f （x0的表达式及值域；（2）问是否存在实数m ，使得命题p ：2()(34)f m m f m -<-和q ：11()44m g ->满足复合命题p 且q 为真命题？若存在，求出a 的取值范围，若不存在，说明理由。

2013年数学(文)模拟训练(六)

2013年数学（文）模拟训练（六）2013.5本试卷分第Ⅰ卷（选择题）和第Ⅱ卷（非选择题）两部分，共150分，考试时间120分钟.第Ⅰ卷（选择题，共60分）一、选择题：本大题共12小题，每小题5分，共60分，在每小题给出的四个选项中，只有一项是符合题目要求的。

1. 设集合{}{}2|20,|1A x x x B x x =->=>，R 为实数集，则()R C B A ⋂等于（）A. （0，1）B. [1, 2)C. (0, 1]D. (-∞, 0)2. 若复数11z i=+，则z i ⋅在复平面内对应的点位于（）A. 第一象好限B. 第二象限C. 第三象限D. 第四象限3. 若向量(3,2)a x x =+ 和向量(1,1)b =- 平行，则||a b +＝（）A. B.2C. D.24. “1a =-”是“直线260a x y -+=与直线4(3)90x a y --+=”互相垂直的（） A. 充分不必要条件 B. 必要不充分条件 C. 充要条件 D. 既不充分也不必要条件5. 对四组数据进行统计，获得以下散点图，关于其相关系数比较，正确的是（）A. 24310r r r r <<<<B. 42130r r r r <<<<C.42310r r r r <<<<D. 24130r r r r <<<<6. 执行如图所示的程序框图，输出的S 的值是（） A. 2 C.12B. -1D. 17. 等比数列{}n a 中，27989a a a a =>且，则使得110n a a ->的自然数n 的最大值为（）A. 10B. 9C. 8D. 78. 函数sin ()(0||)2y x πωϕωϕ=+><且在区间2[,]63ππ上单调递减，且函数值从1减小到－1，那么此函数图象与y 轴交点的纵坐标为（） A.12B.2C.2D.49. 设不等式组004x y y kx k≥⎧⎪≥⎨⎪≤-+⎩在平面直角坐标系中所表示的区域的面积为S ，则当1k >时，1kS k -的最小值为（） A. 16 B. 32 C. 48 D. 5610. 如图所示，在等腰梯形ABCD 中，AB ＝2DC ＝2，∠DAB ＝60°，E 为AB 的中点，将△ADE 与△BEC 分别沿ED 、EC 向上折起，使A 、B 重合于点P ，则三棱锥P －DCE 的外接球的体积为（）A.27B.2C.8D.2411. 已知P 是双曲线22221(0,0)x y a b ab-=>>上的点，12,F F 是其焦点，双曲线的离心率是54，且120P F P F ⋅=，若12P F F ∆的面积为9，则a b +的值为（）A. 5B. 6C.7D. 812. 定义在{|,1}x x R x ∈≠上的函数(1)(1)f x f x -=-+，当1x >时，1()()2x f x =，则函数()f x 的图象与函数11()co s ()(35)22g x x x π=+-≤≤的图象的所有交点的横坐标之间和等于（） A. 4B. 6C. 8D. 10第Ⅱ卷（非选择题，共90分）二、填空题：本大题共4小题，每小题5分，共20分13. 一个空间几何体的三视图如图所示，其中正（主）视图为等腰直角三角形，侧（左）视图与俯视图为正方形，则该几何体的表面积为.14.已知函数()1,()ln f x g x a x ==，若在14x =处函数()()f x g x 与的图象的切线平行，则实数a 的值为 . 15. 椭圆2212516xy+=的左、右焦点分别为F 1, F 2，弦AB 过左焦点F 1，若△ABF 2的内切圆周长为,,A B π两点的坐标分别为112212(,),(,),||x y x y y y -则值为 .16. 已知“整数对”按如下规律排成一列：(1, 1), (1, 2), (2, 1), (1, 3), (2, 2), (3, 1), (1, 4), (2, 3), (3, 2), (4,1), …, 则第60个“整数对”为 .三、解答题：本大题共6小题，满分70分. 解答须写出文字说明、证明过程和演算步骤 17. （本小题满分12分）已知△ABC 中，角A 、B 、C 所对的边分别,,a b c ，且2222()3a b c a b +-=.（1）求2sin2A B +；（2）若2c =，求△ABC 面积的最大值.18. （本小题满分12分）如图，已知长方形ABCD 中，AB ＝2，A 1，B 1分别是AD ，BC 边上的点，且AA 1=BB 1=1, E ，F 分别为B 1D 与AB 的中点. 把长方形ABCD 沿直线11A B 折成直角二面角，且01130A B D ∠=. （1）求证：C D E F ⊥（2）求三棱锥11A B E F -的体积.19. （本小题满分12分）PM2.5是指悬浮在空气中的空气动力学当量直径小于或等于2.5微米的颗粒物，也称为可入肺颗粒物.根据现行国家标准GB3095－2012, PM2.5日均值在35微克/立方米以下空气质量为一级；在35~75微克/立方米之间空气质量为二级；在75微克/立方米以上空气质量为超标.从某自然保护区2012年全年每天的PM2.5监测值数据中随机地抽取12天的数据作为样本，监测值频数如茎叶图所示（十位为茎，个位为叶）：（I ）求空气质量为超标的数据的平均数与方差；（II ）从空气质量为二级的数据中任取2个，求这2个数据的和小于100的概率；（III ）以这12天的PM2.5日均值来估计2012年的空气质量情况，估计2012年（366天）大约有多少天的空气质量达到一级或二级.20. （本小题满分12分）已知抛物线2:2(0)C y px p =>的焦点F 和椭圆22143xy+=的右焦点重合，直线l 过点F 交抛物线于A 、B 两点. （1）求抛物线C 的过程；（2）若直线l 交y 轴于点M ，且,,M A m A F M B n B F ==对任意的直线l ，m n +是否为定值？若是，求出m n +的值；否则，说明理由.21. （本小题满分12分）已知函数2()(33)x f x x x e =-+⋅，设(2),()2f m f t n t -==>-且.（1）试确定t 的取值范围，使得函数()f x 在[－2，t ]上为单调函数；（2）试判断,m n 的大小，并说明理由；（3）求证：对于任意的2t >-，总存在0(2,)x t ∈-，满足020()2(1)3x f x t e'=-，并确定这样的0x 的个数.请考生在第22、23、24三题中任选一题做答，如果多做，则按所做的第一题记分.22. （本小题满分10分）选修4-1：几何证明选讲如图，AB 是⊙O 的直径，C 是⊙O 外一点，且AC ＝AB ，BC 交⊙O 于点D. 已知BC ＝4， AD ＝6， AC 交⊙O 于点E ，求四边形ABDE 的周长.23. （本小题满分10分）选修4-4：坐标系与参数方程选讲已知圆1O 和圆2O 的极坐标方程分别为22,co s()24πρρθ=--=. （I ）把圆1O 和圆2O 的极坐标方程化为直角坐标方程. （II ）求经过两圆交点的直线的极坐标方程. 24. （本小题满分10分）选修4-5：不等式选讲已知函数()|3|||,f x x x a a =-+-∈R. （I ）当0a =时，解关于x 的不等式()4f x >；（II ）若存在实数x 使得不等式|3|||4x x a -+-<成立，求实数a 的取值范围.数学（文）（四）答案一、选择题1. C 解析：因为(0,2),A =(1,)B =+∞,可得()(,1]R C B =-∞，故()R C B A ⋂＝(0, 1]2. B 解析：本题考查复数的计算和复数的坐标表示. 1112i z i-==+，则z i ⋅＝11222i i i +⋅=-+，所以z i⋅在复平面内对应的点为11(,)22-，位于第二象限. 3. C 解析：依题意得，32x x +=-，解得1x =-，所以()(2,2)(1,1)(1,1)a b +=-+-=-，则||a b +==，选C.4. A 解析：∵两直线垂直 ∴2430a a +-= ∴1a =-或34，故选A.5. A 解析：由相关系数的定义以及散点图所表达的含义可知：24310r r r r <<<<.6. A 解析：由题意得，S ＝111,,2,1,,2, (2)2--，故输出的S 的值为2，选 A.8. A 解析：sin()y x ωϕ=+的最大值为1，最小值为－1，由该函数在区间2[,]63ππ上单调递减，且函数值从1减小到－1，可知2362πππ-=为半周期，则周期为22,2Tπππωπ===，此时原函数式为sin (2)y x ϕ=+，又由函数sin()y x ωϕ=+的图象过点（,16π），代入可得6πϕ=，因此函数为sin (2)6y x π=+. 令0x =，可得12y =，故选A.7.二、填空题13. 48+解析：该几何体为直三棱柱，1442(4442S=⨯⨯⨯+++⨯＝48+14. 14解析：121(),()2af x xg xx-''==，由11()()44f g''=，则14a=.9.三、解答题17. 解：（1）22232a b c a b +-=2223c o s24a b cC a b+-∴==（2分）A B C π+=- 21c o s ()1c o s 7s i n 2228A B A B C +-++∴=== （6分）（2）22232a b ca b +-=且2c =，22342a b a b ∴+-=，又222a b ab +≥ ，3242a b a b ∴≥- 8a b ∴≤ （8分）3co s 4C =，sin 4C ∴===（10分）∴△ABC ＝1sin 2a b C ≤ （12分）18. 解：（I ）证明：因为AA 1=BB 1=1, 且AA 1//BB 1，所以四边形ABB 1A 1为矩形，故AA 1⊥A 1B 1，取A 1B 1的中点G ，边接EG ，FG ，因为F 为AB 的中点，所以AF//A 1G ，且AF ＝A 1G ，可得四边形AFGA 1是平行四边形，所以FG//AA 1，故FG ⊥A 1B 1 ,同理可得EG ⊥A 1B 1,所以A 1B 1⊥面EFG ，可得A 1B 1⊥EF. 因为CD//A 1B 1，所以CD ⊥EF. （6分）（II ）因为∠A 1B 1D=30°，所以1111tan 302A D A D AB ==，可得111323A D E G A D ===因为二面角A －A 1B 1－D 为直二面角，由（I ）可知FG ⊥面A 1B 1E, 所以111111123239AB E FF A B E V V --==⨯⨯⨯=（12分）19. 解：（I ）空气质量为超标的数据有四个：77，79，84，88 平均数为77798488824x +++== （2分）方差为222221[(7782)(7982)(8482)(8882)]18.54s=⨯-+-+-+-= （4分）（II ）空气质量为二级的数据有五个：47，50，53，57，68任取两个有十种可能结果：{47，50}，{47，53}，{47，57}，{47，68}，{50，53}，{50，57}，{50，68}，{53，57}，{53，68}，{57，68}. 两个数据和小于100的结果有一种：{47，50}. 记“两个数据和小于100”为事件A ，则1()10P A =即从空气质量为二级的数据中任取2个，这2个数据和小于100的概率为110（8分）（III ）空气质量为一级或二级的数据共8个，所以空气质量为一级或二级的频率为82123=（10分）23362443⨯=，所以2012年的366天中空气质量达到一级或二级的天数估计为244天. (12分)。