大学英语四级真题及答案
大学英语四级考试真题试卷及答案
大学英语四级考试真题试卷及答案第一部分听力（共两节，满分30分）第一节（共5小题；每小题1.5分，满分7.5分）听下面5段对话。
每段对话后有一个小题，从题中所给的A、B、C 三个选项中选出最佳选项，并标在试卷的相应位置。
听完每段对话后，你都有10秒钟的时间来回答有关小题和阅读下一小题。
每段对话仅读一遍。
1. What does the man suggest the woman do?A. Stay in bedB. Go for a walkC. Get exercise2. What do we learn about the speakers?A. They like the movieB. They have known each other for yearsC. They are going for a walk3. What is the woman going to do next?A. Make a planB. Talk with her friendC. Help the man4. What does the man mean?A. He wants the woman to sit downB. He prefers the woman to stand upC. He doesn't want to distract the woman5. Why is the man going to Cuba?A. For a jobB. For a holidayC. For further study第二节（共15小题；每小题1.5分，满分22.5分）听下面5段对话或独白。
每段对话或独白后有几个小题，从题中所给的A、B、C三个选项中选出最佳选项，并标在试卷的相应位置。
听每段对话或独白前，你将有时间阅读各个小题，每小题5秒钟；听完后，各小题将给出5秒钟的作答时间。
每段对话或独白读两遍。
大学英语四级考试真题及答案(完整版)
大学英语四级考试真题及答案(绝对完整）Part I Writing (30 minutes)Directions: For this part, you are allowed 30 minute to write a shortessay on the topic of students selecting their lectures. You should writeat least 120 words following the outline given bellow:1. 越来越多的博物馆免费对外开放的目的是什么？2. 也会带来一些问题3. 你的看法？Part II Reading Comprehension (Skimming and Scanning) (15minutes)Directions: In this part, you will have 15 minutes to go overthe passage quickly and answer the questions on Answer Sheet 1. Forquestions 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 informationgiven in the passage.How Do You See Diversity?As a manager, Tiffany is responsible for interviewing applicants for someof the positions with her company .During one interview, she noticed thatthe candidate never made direct eye contact. She was puzzled and somewhatdisappointed because she liked the individual otherwise. He had a perfect resume and gave good responses to her questions, but thefact that he never looked her in the eye said “untrustworthy,” so shedecided to offer the job to her second choice.“It wasn’t until I attended a diversity workshop that I realized theperson we passed over was the perfect person,” Tiffany confesses. Whatshe hadn’t known at the time of the interview was that the candidate’s“different”behavior was simply a cultural misunderstanding . He was an Asian-Americanraised in a household where respect for those in authority was shown byaverting(避开) your eyes.“I was just thrown off by the lack of ye contact; not realizing it wascultural,” Tiffany says. “I missed out ,but will not miss thatopportunity again.”Many of us have had similar encounters with behaviors we perceive asdifferent. As the world becomes smaller and our workplaces more diverse,it is becoming essential to expand our under-standing of others and toreexamine some of our false assumptions .Hire AdvantageAt a time when hiring qualified people is becoming moredifficult ,employers who can eliminate invalid biases(偏爱) from theprocess have a distinct advantage .My company, Mindsets LLC ,helpsorganizations and individuals see their own blind spots . A real estaterecruiter we worked with illustrates the positive difference suchtraining can make .“During my Mindsets coaching session ,I was taught how to recruit a diversified workforce. I recruited people from different cultures and skill sets .The agents were able to utilize their full potential and experiences to build up the company .When the real estate market began to change, it was because we had a diverse agent pool that we were able to stay in the real estate market much longer than others in the same profession.”Blinded by GenderDale is an account executive who attended one of my workshops onsu pervising a diverse workforce . “Through one of the sessions ,I discovered my personal bias ,” he recalls . “I learned I had not been looking at a person as a whole person , and being open to differences .” In his case , the blindness was not about culture but rather gender.“I had a management position open in my department ;and the two finalists were a man and a woman . Had I not attended this workshop , I would have automatically assumed the man was the best candidate because the position required quite a bit of extensive travel . My reasoning would have been that even though both candidates were great and could have been successful in the position , I assumed the woman would have wanted to be home with her children and not travel .”Dale’s assumptions are another example of the well-intentioned but incorrect thinking that limits an organization’s ability to tap into the full potential of a diverse workforce.“I learned from the class that instead of imposing my gender biases into the situation , I needed to present the full range of duties, responsibilities and expectations to all candidates and allow them to make an informed decision .” Dale credits the workshop , “because it helped me make decisions based on fairness .”Year of the Know-It-AllDoug is another supervisor who attended one of my workshops .He recalls a major lesson learned from his own employee.“One of my most embarrassing moments was when I had a Chinese-American employee put in a request to take time off to celebrate Chinese New Year . In my ignorance , I assumed he had his dates wrong , as the first of January had just passed . When I advised him of this , I gave him a long talking-to about turning in requests early with the proper dates .“He pati ently waited , then when I was done , he said he would like Chinese New Year did not begin January first , and that Chinese New Year ,which is tied to the lunar cycle ,is one of the most celebrated holidays on theChinese calendar . Needless to say , I felt very embarrassed in assuminghe had his dates mixed up . But I learned a great deal about assumptions ,and that the timing of holidays varies considerably from culture toculture .“Attending the diversity workshop helped me realize how much I couldlearn by simply asking questions and creating dialogues with my employees ,rather than making assumptions and trying to be a know-it-all ,” Dougadmits . “The biggest thing I took away from the workshop is learninghow to be more ‘inclusive’ to differences.A better Bottom LineAn open mind about diversity not only improves organizationsinternally , it is profitable as well . These comments from a customerservice representative show how an inclusive attitude can improvesales .”Most of my customers speak English as a second language . Oneof the best things my company has done is to contract with a languageservice that offers translations over the phone . It wasn’t until my bossreceived Mindsets’ training that she was able to understand how importantinclusiveness was to customer service . As result , our customer base hasincreased .”Once we start to see people as individuals . and discard thestereotypes , we can move positively toward inclusiveness for everyone .Diversity is about coming together and taking advantage of our differencesand similarities . It is about building better communities andorganizations that enhance us as individuals and reinforce our sharedhumanity .When we begin to question our assumptions and challenge what we think wehave learned from our past , from the media, peers , family , friends ,etc , we begin to realize that some of our conclusions are flawed(有缺陷的) or contrary to our fundamental values . We need to train our-selvesto think differently , shift our mindsets and realize that diversity opensdoors for all of us ,creating opportunities in organizations andcommunities that benefit everyone.1. What bothered Tiffany during an interview with her candidate?A) He just wouldn’t look her in the eye.B) He was slow in answering her questions.C) His answers to some of her questions were irrelevant.D) His answers to some of her questions were irrelevant.2. Tiffany’s misjudgment about the candidate stemmed from _____.A) Racial stereotypes. C) Racial stereotypes.B) Invalid personal bias . D) Emphasis on physical appearance3. What is becoming essential in the course of economic globalizationaccording to the author?A) Hiring qualified technical and management personnel.B) Increasing understanding of people of other cultures.C) Constantly updating knowledge and equipment.D) Expanding domestic and international markets.4. What kind of organization is Mindsets LLC?A) A real estate agency. C) A cultural exchange organization.B) A personnel training company. D) A hi-tech company5. After one of the workshops ,account executive Dale realized that _____.A) He had hired the wrong person.B) He could have done more for his company.C) He had not managed his workforce well.D) He must get rid of his gender bias.6. What did Dale think of Mindsets LLC’s workshop?A) It was well-intentioned but poorly conducted.B) It tapped into the executives’ full potential.C) It helped him make fair decisions.D) It met participants’ di verse needs.7. How did Doug, a supervisor, respond to a Chinese-American employee’srequest for leave?A) He told him to get the dates right. C)He flatly turned it downB) He demanded an explanation. D)He readily approved it.8. Doug felt _____ when he realized that his assumption was wrong.9. After attending Mindsets’ workshops, the participants came to knowthe importance of _____ to their business.10. When we view people as individuals and get rid of stereotypes , wecan achieve diversity and benefit from the _____ between us.Part III Listening Comprehension (35 Minutes)Section ADirections: In this section, you will hear 8 short conversations and 2long conversations. At the end of each conversation, one or more questionswill be asked about what was said .Both the conversation and the questionswill 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 letteron Answer sheet 2 with a single line through the centre.11. A) She expected more people at her party.B) She enjoys entertaining small children .C) She threw a surprise party for her friendD) She has always enjoyed great popularity.12. A) They are not used to living in a cold place.B) They feel lucky to live in Florida.C) They are going to have a holiday.D) They have not booked their air tickets yet.13. A) He was pleased to get the medal. C) He used to be a firefighter.(B) He was very courageous. D) He was accused of causing a fire.14。
2020年精品-大学生英语四级真题试卷及答案(三套全)
目录2018年6月大学英语四级真题试卷一及答案(完整版) (1)答案 (15)2018年6月大学英语四级真题试卷二及答案(完整版) (16)答案 (30)2018年6月大学英语四级真题试卷三及答案(完整版) (31)答案 (41)2018年6月大学英语四级真题试卷一及答案(完整版)Part I Writing (30 minutes) (请于正式开考后半小时内完成该部分，之后将进行听力考试)Directions:For this part, you are allowed 30 minutes to write an a short easy on the importance o f.You should write at least120 words but no more than 180 words. speaking ability and how to develop itPart II Listening Comprehension (25 minutes) Section ADirections:In this section, you will hear three news reports. At the end of each news report, you will hear two or three questions. Both the news report and questions will be spoken only once. After you hear questions, you must choose the best answer from the four choices marked A), B), C) and D). Then mark the corresponding letter on Answer Sheet 1with a single line through the centre.注意：此部分试题请在答题卡1上作答。
大学英语四级真题及参考答案(第一套)
大学英语四级真题解析及参考答案Part I Writing (30 minutes)Directions:For this part, you are allowed 30 minutes to write a news report to your campus newspaper on a volunteer activity organized by your Student Union to assist elderly people in the neighborhood. You should write at least 120 words but no more than180 words.【参考范文】On June 14, Friday, a volunteer activity where many students took an active part in visiting the local Nursing House was organized by the Student Union and it turns out to be a big success.The activity was aimed at encouraging students to visit the elderly at the Nursing House and help elderly people deal with their troubles both physical and psychological. Many students volunteered to participate in this good deed and were engaged in helping the elderly here out by making their meals, washing their clothes and chatting with them. When asked about those volunteers’ feelings about such an experience, all of them responded with a smile, saying “what a wonderful practice and I really appreciate this experience, for it makes me learn to care more for others in need.”All in all, the activity turns out to be a success not only for the visited elderly but for those students involved.【参考范文译文】6月14日，星期五，学生会组织了一个参观当地敬老院的志愿活动，许多学生都积极参与其中，该活动取得了巨大的成功。
2021年12月全国大学英语四级真题及答案(全三套)
2021年12月全国大学英语四级真题及答案（一）一、听力部分：News Report One(1)A 22-year-old Chinese woman who suffered from a persistent cough was shocked to learn that she had a piece of chicken bone lodged in her lung.The unnamed woman from the province of Shandong started have coughing problems when she was 7 or 8 years old.For 14 years,she made numerous hospital visits.However,no doctor could identify any problem.Her uncontrollable coughing was a mystery.Finally,the woman got a full body scan at a hospital in the city of Qingdao.This special medical procedure revealed she had a chicken bone stuck in herlung.(2)Doctors performed surgery and removed the bone.The simple procedure went smoothly and the woman has recovered fully with the bone finally removed from her lung,the woman is very happy that she no longer suffers from that annoying cough.1.What was the woman’s problem?2.How was the woman’s problem eventually solved?News Report Two(3)A white shape named Prickles that ran away from an Australian farm during the 2013 bush fires recently returned home.According to farmer Alice Gray,Prickles was only a lamb when she ran away.The bush fires that hit the area back then destroyed a large part of her family’s massive property.They thought Prickles had died in the fire.But instead,the young sheep escaped into a 200-acre forest near the farm.(4)Once the fires were over,the family had to fix the damage done to the farm as it was such a large property,which included rebuilding about 40 kilometers of fencing.It was this huge fencing that prevented Pickles from finding her way back.Over the years,the family spotted her a few times.They even recorded her with cameras installed to monitor the activity.But when they knew Pringles was alive,they couldn’t find her and never expected her to re turn by herself.Seven years later,they were proven wrong.3.What does the news say about the white sheep Prickles?4.What the family do of the bush fires?News Report Three(5)Tons of gold have fallen out of the sky in Russia after a cargo plane malfunctioned in midair this morning.The aircraft was carrying 265 million pounds worth of gold and diamonds,when the door flew open,sending the precious metal back to earth.According to the official news agency,Russian authorities have recovered more than 170 gold bars weighing 20 kilograms each.The plane was traveling from Yakutsk airport in a major diamond producing region to the city Krasnoyarsk in Siberia.(6)However,the aircraft made an emergency landing in Magan after began losing some of its valuable cargo.Reports suggest some bars of gold were scattered up to fifteen miles away from the airport.Nine tons of gold on plane AN12 belonged to a gold mine company.Police have sealed off the runway and say it is unclear if it was an accident or an attempted robbery.(7)Technical engineers who worked on the plane prior to takeoff are reportedly going to be questioned by the police.5.What is the news report mainly about?6.What did the aircraft do when the incident happened?7.What does the news report say about the technical engineers who worked on the plane beforetakeoff?Conversation One8.Why does the man have this conversation with the man recorded?His job is related to the customer service.9.What is the woman’s purpose of calling to the furniture company?She wants to know when she can get her money back.10.What does the woman say about her bank card?The new bank card will be sent to her on Tuesday,and the bank may has canceled the old one before the man made the payment.11.What does the man advise the woman to do?She needs to update the card details directly on the website.Conversation Two12.Why isn’t the man going to cook?He’s worn out.13.What does the man say he’ll do on his phone?He’ll use the food delivery app on his phone.14.What does the woman think of the Indian food?That’s not the kind of the hot she means.She needs something mild.15.What does the man think of the woman?She’s really difficult to please.Passage One(16)A new study carried out by the university of Lincoln has found a link between the personalities of cat owners and the behavior and wellbeing of their cats.The findings suggest that just as apparent personality can affect the personality of a child,the same is true for a cat and its owner.Owners defined as individuals with high levels of anxiety,fear,anger,depression and loneliness were more likely to have cats with behavioral issues.Such cats display more aggressive and anxious behavioral styles as well as more stress related sickness.They will also more likely to have an ongoing medical condition and be overweight.The research also found that mentally well-adjusted owners had come from happier and healthier cats.Researchers explained that many owners regard their pets as a family member and form close social bonds with them.(17)The majority of owners want to provide the best care for their pets and is therefore possible that pets could be affected by the way their owners interact with and manage them.The study highlights an important relationship between our personalities and the well-being of our pets.(18)Further research is needed to investigate the cause of nature of this relationship and look at how owners’personalities are directly influencing their pet’s behavior and well-being.It is possible that the well-being of pets is driven by the underlying nature of the owner not simply by their conscious decisions and behaviors.16.What do we learn from the new study by the University of Lincoln?17.What does the passage say most pet owners want to do?18.What does the passage say it’s still needed to understand the effects of owners’personalities on their pets?Passage Two(19)One 50-minute run can add seven hours to your life.This was a claim made by The Times last week.The claim was based on a new review of studies about the effects of running.The review concluded that an average runners live three years longer than non-runners and that running doesmore to extend life than any other form of exercise.But there’s more to running than its health benefits.(20)Research published in recent years have shown that running changes your brain and mind in some fascinating ways from increasing your brain function to regulating your emotions.However,the precise effects vary according to whether you engage in short fast running or long distance runni ng.For example,in one study,researchers compared participants’ability to learn new words after several minutes of intense running,and after 40 minutes of gentlerunning,participants were able to learn 20 percent faster after the intense running and they showed a superior memory when tested again a week later.In another study,researchers asked volunteers to jog for 30 minutes and then showed them clips from a sad movie.Participants who usually struggled to handle negative emotions were more intensely affecte d by the sad clips just as you’d expect.But crucially,this was less so if they had completed the 30 minutes jog.(21)The researchers said moderate exercise appears to have helped those participants to be less vulnerable to the impact of the sad movie.19.What did the new review of studies claim?20.What is one effect that running has on people according to recent research?21.What did another study find about the participant after they had a 30 minutes jog?Passage ThreeWelcome to the tour of the Hill House.This house built in 1904 is one of the most well-known works of Charles Hill,the famous architect.It was designed and built for local entrepreneur and his family.Before starting the tour,let me give you a brief introduction about the design of this amazing building.(23)Prior to beginning his design,the architect spends sometime in the client’s old home,observing their life and studying their habits.This meant that he could design the house according to the needs of the family.(24)The client’s main desire w as to have a home with unique design,so the architect was given complete freedom.The building style is radically different from what was the fashion of the period.At the time,most large homes were constructed of timber and brick.This one,however,is made of concrete,a novel construction material in those days.The interior of the house,including the fittings and furniture,was also designed by the same person.Most of the furniture you will see is original and in good condition.However,(25)both pieces in the ch ildren’s bedrooms are copies built to the designs of the architect.Fortunately,all the blueprints for both the building and its contents have been preserved,so we’ve been able to replace badly damaged furniture.Let’s begin our tour,starting from the rooms.22.What do we learn about the speaker?He is the guide of the tour.23.What dis the architect do before beginning his design?24.What did the architect’s client mainly want?25.What do we learn about the pieces of furniture in the children’s bedrooms?1.D)He did an unusual good deed2.C)Give some money to the waiter3.A)Whether or not to move to the state's mainland4.B)It costs too much money5.A)To investigate whether people are grateful for help6.C)They held doors open for people at various places7.B)Most people express gratitude for help8.C)To enquire about solar panel installation9.D)He has a large family.10.B)The cost of a solar panel installation11.D)About five years12.A)At a travel agency13.D)She wanted to spend more time her family.14 D)Two weeks.15.A)Choosing some activities herself16.D)Pay a green tax upon arrival17.A)It has not been doing a good job in recycling.18.B)To ban single-use plastic bags and straws on Bali land.19.D)Its population is now showing signs of increase20.C)Commercial hunting21.D)To seek breeding grounds22.C)They consume less milk these days23.A)It is not as healthy as once thought24.C)They lack the necessary proteins to digest it25.B)It provides some necessary nutrients二、选词填空部分：When my son completes a task,I can't hlep but praise him.26.B.constant27.G.negative28.K.repeatedly29.L.rewarded30.C disappointing31.H.outcome32.1.pattern33.D.distinguish34.N.simply35.0.undertaken三、信息匹配部分：The History of the Lunch Box36.[F]City kids,on the other hand,went home for lunch and came back.37.[j]The company sold 600,000 units the first year.38.[〇]The introduction of backpacks changed the lunch box scene a bit^he adds.39.[C]Lunch boxes have been connecting kids to cartoons and TV shows and super-heroes for decades.40.[H]And then everything changed in the year of 1950.41.[L]The new trend was also a great example of planned obsolescence,that is,to design a product so that it will soon become unfashionable or impossible to use and will need replacing.42.[D]Let's start back at the beginning of the 20th century-the beginning of the lunch box story,really.43.[A]It was made of shiny,bright pink plastic with a Little Mermaid sticker on the front,and I carried it with me nearly every single day.44.[M]The metal lunch box craze Lasted until the mid-1980s,when plastic took over.45.<I>But these containers were really sting years on end.四、仔细阅读部分：P146 A When they don*t have the chance to do what they want47 D Harmful conduct48 B Many volunteers choose to hurt themselves rather than endure boredom49 C It may promote creative thinking.50 D Allow oneself some time to be bored.P251.B Forests are fast shrinking in many developing countries.52.C Those that used to have the lowest forest coverage.53.A The g overnment’s advocacy54.C Their capability of improving air quality55.D Developed and developing countries are moving in opposite directions五、作文部分：WritingDirections：For this part,you are allowed 30 minutes to write on the topic Changes in the Way of Transportation.You should write at least 120 words but no more than 180 words.范文：Changes in the way of transportationAs the internet is developing so rapidly,the way of transportation keeps changing surprisingly.New applications on transportation emerge abundantly,contributing to the fact that people*s lifestyle has been changed as well.The changes in the way of transportation can be listed as follows.First of all,with the development of technology,the price of transportation is much cheaper than before.Moreover,compared with traditional ways of buying tickets,transportation applications and websites give passengers the opportunity to book tickets online without going outside to particular ticketoffices.Besides,highspeed railways gradually replace the oldfashioned green trains,which can tremendously improve travelers’comfort during the journey and shorten the time spent on the way. From my perspective,the changes in the way of transportation mainly lie in the good respects.As one of the fortunate passengers who live in the age of internet and can get access to online service of transportation,I can*t help exclaiming:it is the best of times.六、翻译部分：春节前夕吃团圆饭是中国人的传统。
大学英语四级考试试题真题附参考答案
大学英语四级考试试题真题附参考答案Section CWe're now witnessing the emergence of an advanced economy based on information and knowledge. Physical(36)___, raw materials, and capital are no longer the key(37) ____ in the creation of wealth. Now, the(38) ____ raw material in our economy is knowledge. Tomorrow's wealth depends on the development and exchange of knowledge. And(39) ___ entering the workforce offer their knowledge, not their muscles. Knowledge workers get paid for their education and their ability to learn. Knowledge workers(40)____ in mind work. They deal with symbols: words,(41) ___ and data.What does all this mean for you? As a future knowledge worker, you can expect to be(42) ____ , processing, as well as exchanging information.(43)____ , three out of four jobs involve some form of mind work, and that number will increase sharply in the future. Management and employees alike(44)____ .In the new world of work, you can look forward to being in constant training (45)____ . You can also expect to be taking greater control of your career. Gone are the nine-five jobs. lifetime security, predictable promotions, and even the conventional workplace, as you are familiar with. (46)____ , and don’t wait for someone to “empower”you. Youhave to empower yourself.Part IV Reading Comprehension (Reading in Depth) (25 minutes) Section AQuestion 57 to 61 are based on the following passage.Some years ago I was offered a writing assignment that would require three months of travel through Europe. I had been abroad a couple of times, but I could hardly -47- to know my way around the continent. Moreover, my knowledge of foreign languages was -48- to a little college French.I hesitated. How would I, unable to speak the language, -49- unfamiliar with local geography or transportation systems, set up-50- and do research? It seemed impossible, and with considerable-51-I sat down to write a letter begging off. Halfway through, a thought ran through my mind: you can’t learn if you don’t try. So I accepted the assignment.There were some bad-52-. But by the time I had finished the trip I was an experienced traveler. And ever since. I have never hesitated to head for even the most remote of places. Without guides or even-53- bookings. Confident that somehow I will manage.The point is that the new, the different, is almost by definition –54- . but each time you try something. You learn. And as the learning plies up. The world opens to you.I’ve learned to ski at 40, and flown up the Rhine river in a –55-. And I know I’ll go to doing such things. It’s not because I’m braver or more daring than others. I’m not. But I’ll accept anxiety as another name for challenge and I believe I can-56-wonders.A. complish I. manufactureB. advanced J. momentsC. balloon K. newsD. claim L. reducedE. constantly M. regretF. declare N. scaryG. interviews O. totallyH. limitedPassage OneQuestion 57 to 61 are based on the following passage.Global warming may or may not be the great environmental crisis of the 21st century, but- regardless of whether it is or isn't - we won't do much about it. We will argue over it and may even, as a nation, make some fairly solemn-sounding commitments to avoid it. But the more dramatic and meaningful these commitments seem, the less likely theyare to be observed.A1 Gore calls global warming an "inconvenient truth," as if merely recognizing it could put us on a path to a solution. But the real truth is that we don't know enough to relieve global warming, and - without major technological breakthroughs - we can't do much about it.From 2003 to 2050,the world 's population is projected to grow from 6.4 billon to 9.1 billion ,a 42% increase. if energy use per person and technology remain te same, total energy use and greenhouse gas emissions(mainly,CO2)will be 42% higher in 2050.But that's too low, because societies that grow richer use more energy. We need econmic growth unless we condemn the world's poor to their present Poverty and freeze everyone else's living standards. With modest growth, energy use and greenhouse emissions more then double by 2050.No government will adopt rigid restrictions on economic growth and personal freedom (limits on electricity usage, driving and travel)that might cut back global warming. Still, politicians want to show they're "doing something "Consider the Kyoto Protoco(京都议定书).It allowed countries that joined to punish those that didn't. But it hasn't reduced CO2 emissions(up about 25% since 1990),and many signatories(签字国) didn't adopt tough enough policies to hit their 2008-2012 targets.The practical codusion is that if global warming is a potentialdisaster, the only solution is new technology. Only an aggressive research and development program might find ways of breaking our dependence on fossil fuels or dealing with it.The trouble with the global warming debate is that it has become a moral proble when it's really an engineering one. The inconvenient truth is that if we don't solve the engineering problem, we're helpless.57.What is said about global warming in the first paragraph?A) It may not prove an environmental crisis at all.B) It is an issue requiring worldwide commitments.C) Serious steps have been taken to avoid or stop it.D) Very little will be done to bring it under control.58.According to the author's understanding, what is A1 Gore's view on global warming?A) It is a reality both people and politicians are unaware of.B) It is a phenomenon that causes us many inconveniences.C) It is a problem that can be solved once it is recognized.D) It is an area we actually have little knowledge about.59.Greenhouse emissions will more than double by 2050 because of ___.A) economic growthB) wasteful use of energyC) the widening gap between the rich and poorD) the rapid advances of science and technology60.The author believes that, since the signing of the Kyoto Protocol,____.A) politicians have started to do something to better the situationB) few nations have adopted real tough measures to limit energy useC) reductions in energy consumption have greatly cut back global warmingD) international cooperation has contributed to solving envoronmental problems61.What is the message the author intends to convey?A) Global warming is more of a moral issue than a practical one.B) The ultimate solution to global warming lies in new technology.C) The debate over global warming will lead to technological breakthroughs.D) People have to give up certain material comforts to stop global warming.Passage TwoQuestion 62 to 66 are based on the following passage.Someday a siranger will read your e-mail without your permission or scan the Website you've visited，Or perhaps someone will casuallyglance through your credit card purchases or cell phonebills to find out your shopping preferences or calling habits.In fact, it's likely some of these things have already happened to you. Who would watch you without your permission? It might be a spouse, a girl friend, a marketing company, a boss, a cop or a criminal. Whoever it is, they will see you in a way you never intended to be seen - the 21st century equivalent of being caught naked.Psychologists tell us boundaries are healthy, that it's important to reveal yourself to friends, family and lovers in stages, at appropriate times. But few boundaries remain. The digital bread crumbs(碎屑) you leave everywhere make it easy for strangers to reconstruct who you are, where you are and what you like. In some cases, a simple Google search can reveal what you think. Like it or not, increasingly we live in a world where you simply cannot keep a secret.The key question is: Does that matter?For many Americans, the answer apparently is "no."When opinion polls ask Americans about privacy, most say they are concerned about losing it. A survey found an overwhelming pessimism about privacy, with 60 percent of respondents saying they feel their privacy is "slipping away, and that bothers me."But people say one thing and do another. Only a tiny fraction of Americans change any behaviors in an effort to preserve their privacy.Few people turn down a discount at tollbooths(收费站) to avoid using the EZ-Pass system that can track automobile movements. And few turn down supermarket loyalty cards. Privacy economist A lessandro Acauisti has run a series of tests that reveal people will surrender personal information like Socail Security numbers just to get their hands on a pitiful 50-cents-off coupon(优惠卷)。
大学英语四级历年真题及答案(经典版
大学英语四级历年真题及答案英语四级Part ⅠWriting (30minutes)Directions: For this part, you are allowed 30 minutes to write a short essay entitled Excessive Packaging following the outline given below. You should write at least 120 words but no more than 180 words.1.目前许多商品存在过度包装的现象2.出现这一现象的原因3.我对这一现象的看法和建议On Excessive PackagingPart ⅡReading Comprehension(Skimming and Scanning)(15minutes) 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.Small Schools RisingThis year's list of the top 100 high schools shows that today, those with fewer students are flourishing.Fifty years ago, they were the latest thing in educational reform: big, modern, suburban high schools with students counted in the thousands. As baby boomers(二战后婴儿潮时期出生的人) came of high-school age, big schools promised economic efficiency.A greater choice of courses, and, of course, better football teams. Only years later did we understand the trade-offs this involved: the creation of excessive bureaucracies(官僚机构)，the difficulty of forging personal connections between teachers and students.SAT scores began dropping in 1963;today,on average,30% of students do not complete high school in four years, a figure that rises to 50% in poor urban neighborhoods. While the emphasis on teaching to higher, test-driven standards as set in No Child Left Behind resulted in significantly better performance in elementary(and some middle)schools, high schools for a variety of reasons seemed to have made little progress.Size isn't everything, but it does matter, and the past decade has seen a noticeable countertrend toward smaller schools. This has been due ,in part ,to the Bill and Melinda Gates Foundation, which has invested $1.8 billion in American high schools, helping to open about 1,000 small schools-most of them with about 400 kids each with an average enrollment of only 150 per grade, About 500 more are on the drawing board. Districts all over the country are taking notice, along with mayors in cities like New York, Chicago and San Diego. The movement includes independent public charter schools, such as No.1 BASIS in Tucson, with only 120 high-schoolers and 18 graduates this year. It embracesdistrict-sanctioned magnet schools, such as the Talented and Gifted School, with 198 students, and the Science and Engineering Magnet,with383,which share a building in Dallas, as well as the City Honors School in Buffalo, N.Y., which grew out of volunteer evening seminars for students. And it includes alternative schools with students selected by lottery(抽签)，such as H-B Woodlawn in Arlington, Va. And most noticeable of all, there is the phenomenon of large urban and suburban high schools that have split up into smaller units of a few hundred, generally housed in the same grounds that once boasted thousands of students all marching to the same band.Hillsdale High School in San Mateo, Calif, is one of those, ranking No.423-among the top 2% in the country-on Newsweek's annual ranking of America's top high schools. The success of small schools is apparent in the listings. Ten years ago, when the first Newsweek list based on college-level test participation was published, only three of the top 100 schools had graduating Classes smaller than 100 students. This year there are 22. Nearly 250 schools on the full ,Newsweek list of the top 5% of schools nationally had fewer than 200 graduates in 2007.Although many of Hillsdale's students came from wealthy households, by the late 1990 average test scores were sliding and it had earned the unaffectionate nickname (绰号) "Hillsjail. " Jeff Gilbert. A Hillsdale teacher who became principal last year, remembers sitting with other teachers watching students file out of a graduation ceremony and asking one another in astonishment, "How did that student graduate?"So in 2003 Hillsdale remade itself into three "houses," romantically named Florence, Marrakech and Kyoto. Each of the 300 arriving ninth graders are randomly(随机地) assigned to one of the houses. Where they will keep the same four core subject teachers for two years, before moving on to another for 11th and 12th grades. The closeness this system cultivates is reinforced by the institution of "advisory" classes Teachers meet with students in groups of 25, five mornings a week, for open-ended discussions of everything from homework problems to bad Saturday-night dates. The advisers also meet with students privately and stay in touch with parents, so they are deeply invested in the students' success."We're constantly talking about one another's advisers," says English teacher Chris Crockett. "If you hear that yours isn't doing well in math, or see them sitting outside the dean's office, it's like a personal failure." Along with the new structure came a more demanding academic program, the percentage of freshmen taking biology jumped from 17 to 95."It was rough for some. But by senior year, two-thirds have moved up to physics," says Gilbert "Our kids are coming to school in part because they know there are adults here who know them and care for them."But not all schools show advances after downsizing, and it remains to be seen whether smaller schools will be a cure-all solution.The Newsweek list of top U.S. high schools was made this year, as in years past, according to a single metric, the proportion of students taking college-level exams. Overthe years this system has come in for its share of criticism for its simplicity. But that is also its strength: it's easy for readers to understand, and to do the arithmetic for their own schools if they'd like.Ranking schools is always controversial, and this year a group of 38 superintendents(地区教育主管)from five states wrote to ask that their schools be excluded from the calculation."It is impossible to know which high schools are 'the best' in the nation, "their letter read. in part. "Determining whether different schools do or don't offer a high quality of education requires a look at man different measures, including students' overall academic accomplishments and their subsequent performance in college. And taking into consideration the unique needs of their communities."In the end, the superintendents agreed to provide the data we sought, which is, after all, public information. There is, in our view, no real dispute here, we are all seeking the same thing, which is schools that better serve our children and our nation by encouraging students to tackle tough subjects under the guidance of gifted teachers. And if we keep working toward that goal, someday, perhaps a list won't be necessary.注意：此部分试题请在答卡1上作答.1．Fifty years ago. big. Modern. Suburban high schools were established in the hope of __________.A) ensuring no child is left behindB) increasing economic efficiencyC) improving students' performance on SA TD)providing good education for baby boomers2. What happened as a result of setting up big schools?A)Teachers' workload increased.B)Students' performance declined.C)Administration became centralized.D)Students focused more on test scores.3.What is said about the schools forded by the Bill and Melinda Gates foundation?A)They are usually magnet schools.B)They are often located in poor neighborhoods.C)They are popular with high-achieving students.D)They are mostly small in size.4.What is most noticeable about the current trend in high school education?A)Some large schools have split up into smaller ones.B)A great variety of schools have sprung up in urban and suburban areas.C)Many schools compete for the Bill and Melinda Gates Foundation funds.D)Students have to meet higher academic standards.5.Newsweek ranked high schools according to .A)their students' academic achievementB)the number of their students admitted to collegeC)the size and number of their graduating classesD)their college-level test participation6.What can we learn about Hillsdale's students in the late 1990s?A)They were made to study hard like prisoners.B)They called each other by unaffectionate nicknames.C)Most of them did not have any sense of discipline,D)Their school performance was getting worse.7.According to Jeff Gilbert, the "advisory" classes at Hillsdale were set up so that students could .A)tell their teachers what they did on weekendsB)experience a great deal of pleasure in learningC)maintain closer relationships with their teachersD)tackle the demanding biology and physics courses8.________is still considered a strength of Newsweek's school ranking system in spite of the criticism it receives.9.According to the 38 superintendents, to rank schools scientifically, it is necessary to use________.10.To better serve the children and our nation, schools students to take________.Part ⅢListening Comprehension (35minutes)Section ADirections: in this section you will hear 8 short conversations, one or more questions will be asked about what was said. Both the conversation 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：此部分试题请在答案卡2上作案。
(完整版)大学英语四级真题及答案(多套题及详解)
大学英语四级真题及答案(多套题及翻译）CET4 Part I Writing (30 minutes)Directions: For this part, you are allowed 30 minutes to write a short essay on the following topic. You should write at least 120 words but no more than 180 words.题目一：Suppose a foreign friend of yours is coming to visit your campus, what is the most interesting place you would like to take him/her to see and why?假设你的一位外国朋友来参观你的校园，你最感兴趣的地方想带他/她去看?为什么?题目二：Suppose a foreign friend of yours is coming to visit your hometown, what is the most interesting place you would like to take him/her to see and why?假设你的一位外国朋友来参观你的家乡，你最感兴趣的地方想带他/她去看?为什么?题目三：Suppose a foreign friend of yours is coming to visit China, what is the most interesting place you would like to take him/her to see and why?假设你的一位外国朋友来参观中国，你最感兴趣的地方想带他/她去看?为什么?Part II Listening Comprehension (30 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 conversation 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 1 with a single line through the centre.注意：此部分试题请在答题卡1上作答。
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大学英语四级真题及答案2017年大学英语四级真题及答案在平平淡淡的日常中，我们都可能会接触到试题，试题有助于被考核者了解自己的真实水平。
什么类型的试题才能有效帮助到我们呢？以下是店铺收集整理的大学英语四级真题及答案，仅供参考，大家一起来看看吧。
大学英语四级真题及答案1Part I Writing (30 minutes)Directions：For this part，you are allowed 30 minutes to write a letter to express your thanks to one of your friends who helped you most when you were in difficulty。
You should write at least 120 words but no more than 180 words。
Part Ⅱ Listening Comprehension (25 mi nutes)Section ADirections： In this section， you will hear three news reports。
At the end of each news report，you will hear two or three questions。
Both the news report 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 1 with a single line through the centre。
Questions 1 and 2 are based on the news report you have just heard.1. A)The International Labor Organization?s key objective.B)The basic social protection for the most vulnerable.C)Rising unemployment worldwide.D)Global economic recovery.2. A)Many countries have not taken measures to create enough jobs.B)Few countries know how to address the current economic crisis.C)Few countries have realized the seriousness of the current crisis.D)Many countries need support to improve their people?s livelihood.Questions 3 and 4 are based on the news report you have just heard.3. A)Serve standardized food nationwide.B)Put calorie information on the menu.C)Increase protein content in the food.D)Offer convenient food to customers.4. A)They will be fined.B)They will be closed.C)They will get a warning.D)They will lose customers.Questions 5 to 7 are based on the news report you have just heard.5. A)Inability to implement their business plans.B)Inability to keep turning out novel products.C)Lack of a successful business model of their own.D)Failure to integrate innovation into their business.6. A)It is the secret to business success.B)It is the creation of something new.C)It is a magic tool to bring big rewards.D)It is an essential part of business culture.7. A)Its hardworking employees.B)Its flexible promotion strategy.C)Its innovation culture.D)Its willingness to make investments.Section BDirections：In this section，you will hear two long conversations. At the end of each conversations you will hear four questions. Both the conversations and the question-s 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 1 with a single line through the centre.Questions 8 to 11 are based on the conversation you have just heard.8. A)He?s got addicted to technology.B)He is not very good at socializing.C)He is crazy about text-messaging.D)He does not talk long on the phone.9. A)Talk big.B)Talk at length.C)Gossip a lot.D)Forget herself.10. A)He thought it was cool.B)He needed the practice.C)He wanted to stay connected with them.D)He had an urgent message to send.11. A)It poses a challenge to seniors.B)It saves both time and money.C)It is childish and unprofessional.D)It is cool and convenient.Questions 12 to 15 are based on the conversation you have just heard.12. A)He wants to change his job assignment.B)He is unhappy with his department manager.C)He thinks he deserves extra pay for overtime.D)He is often singled out for criticism by his boss.13. A)His workload was much too heavy.B)His immediate boss did not trust him.C)His colleagues often refused to cooperate.D)His salary was too low for his responsibility.14. A)He never knows how to refuse.B)He is always ready to help others.C)His boss has a lot of trust in him.D)His boss has no sense of fairness.15. A)Put all his complaints in writing.B)Wait and see what happens next.C)Learn to say no when necessary.D)Talk to his boss in person first.Section CDirections： In this section， you will hear three passages. At the end of each passage， you will hear three or four 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 1 with a single line through the centre.Questions 16 to 18 are based on the passage you have just heard.16. A)The importance of sleep to a healthy life.B) Reasons for Americans? decline in sleep.C)Some tips to improve the quality of sleep.D)Diseases associated with lack of sleep.17. A)They are more health-conscious.B)They are changing their living habits.C)They get less and less sleep.D) They know the dangers of lack of sleep.18. A)Their weight will go down.B)Their mind function will deteriorate.C)Their work efficiency will decrease.D)Their blood pressure will rise.Questions 19 to 21 are based on the passage you have just heard.19. A)How much you can afford to pay.B)What course you are going to choose.C)Which university you are going to apply to.D)When you are going to submit your application.20. A)The list of courses studied.B)The full record of scores.C)The references from teachers.D)The personal statement.21. A)Specify what they would like to do after graduation.B)Describe in detail how much they would enjoy studying.C)Indicate they have reflected and thought about the subject.D)Emphasize that they admire the professors in the university.Questions 22 to 25 are based on the passage you have just heard.22. A)It was equipped with rubber tyres.B)It was built in the late 19th century.C)It was purchased by the Royal family.D)It was designed by an English engineer.23. A)They consumed lots of petrol.B)They took two passengers only.C)They were difficult to drive.D)They often broke down.24. A)They were produced on the assembly line.B)They were built with less costly materials.C)They were modeled after British cars.D)They were made for ordinary use.25. A)It made news all over the world.B)It was built for the Royal family.C)It marked a new era in motor travel.D)It attracted large numbers of motorists.Part III Reading Comprehension (40 minutes)Section ADirections：In this section，there is a passage with ten blanks. You are required to select one word for each blank from a list of choices given in a word bank following the passage. Read the passage through carefully before making your choices. Each choice in the bank is identified by a letter. Please mark the corresponding letter for each item on Answer Sheet 2 with a single line through the centre. You may not use any of the words in the bank more than once.Questions 26 to 35 are based on the passage you have just heard.Physical activity does the body good， and there?s growing evidence that it helps the brain too. Researchers in the Netherlands report that children who get more exercise，whether at school or on their own，to have higher GPAs and better scores on standardized tests. In a of 14 studies that looked at physical activity and academic investigators found that the more children moved， the better their grades were in school，math， English and reading.The data will certainly fuel the ongoing debate over whetherphysical education classes education have included concerns that gym time may be taking away from study time. With standardized test scores in the U.S. in recent years，some administrators believe students need to spend more time in the classroom instead of on the playground. But as these findings show，exercise and academics may not Physical activity can improve to the brain， fueling memory， attention and creativity to learning. And exercise releases hormones that can improve 35 and relieve stress， which can also help learning. So while it may seem as if kids are just exercising their bodies when they?re running around， they may actually be exercising their brains as well.Section BDirections： In this section， you are going to read a passage with ten statements attached to it. Each statement contains information given in one of the paragraphs. Identify the paragraph from which the information is derived. You may choose a paragraph more than once. Each paragraph is marked with a letter. Answer the questions by marking the corresponding letter on Answer Sheet 2.Finding the Right Home—and ContentmentT oo[A] When your elderly relative needs to enter some sort of long-term care facility—a moment few parents or children approach without fear—what you would like is to have everything made clear.[B] Does assisted living really mark a great improvement over a nursing home， or has the industry simply hired better interior designers? Are nursing homes as bad as people fear， or is that an out-moded stereotype Can doing one?s homework really steer families to the best places? It is genuinely hard to know.[C] I am about to make things more complicated by suggesting that what kind of facility an older person lives in may matter less than we have assumed. And that the characteristics adult children look for when they begin the search are not necessarily the things that make a difference to the people who are going to move in. I am not talking about the quality of care，let me hastily add. Nobody flourishes in a gloomy environment with irresponsible staff and a poor safety record. But an accumulating body of research indicates that some distinctions between one type of elder care and another have little real bearing on how well residents do.[D] The most recent of these studies，published in The journal of Applied Gerontology，surveyed 150 Connecticut residents of assisted living，nursing homes and smaller residential care homes (known in some states as board and care homes or adult care homes). Researchers from the University of Connecticut Health Center asked the residents a large number of questions abouttheir quality of life，emotional well-being and social interaction， as well as about the quality of the facilities.[E] “We thought we would see differences based on the housing types，” said the lead author of the study，Julie Robison， an associate professor of medicine at the university. A reasonable assumption—don?t families struggle to avoid nursing homes and suffer real guilt if they can?t?[F] In the initial results， assisted living residents did paint the most positive picture. They were less likely to report symptoms of depression than those in the other facilities， for instance，and less likely to be bored or lonely. They scored higher on social interaction.[G] But when the researchers plugged in a number of other variables，such differences disappeared. It is not the housing type，they found，that creates differences in residents? responses. “It is the characteristics of the specific environment they are in， combined with their own personal characteristics—how healthy they feel they are， their age and marital status，” Dr. Robison explained. Whether residents felt involved in the decision to move and how long they had lived there also proved significant.[H] An elderly person who describes herself as in poor health，therefore， might be no less depressed in assisted living (even if her children preferred it) than in a nursing home. A person who bad input into where he would move and has had time to adapt to it might do as well in a nursing home as in a small residential care home，other factors being equal. It is an interaction between the person and the place， not the sort of place in itself，that leads to better or worse experiences. “You can?t just say， ?Let?s put this person in a residential care home instead of a nursing home—she will be much better off，” Dr. Robison said. What matters， she added，“is a combination of what people bring in with them，and what they find there.”[I] Such findings，which run counter to common sense，have surfaced before. In a multi-state study of assisted living，for instance， University of North Carolina researchers found that a host of variables—the facility?s type， size or age; whether a chain owned it; howattractive the neighborhood was—had no significant relationship to how the residents fared in terms of illness，mental decline，hospitalizations or mortality. What mattered most was the residents? physical health and mental status. Whatpeople were like when they came in had greater consequence than what happened one they were there.[J] As I was considering all this，a press release from a respected research firm crossed my desk， announcing that the five-star rating system that Medicare developed in 2008 to help families compare nursing home quality also has little relationship to how satisfied its residents or their family members are. As a matter of fact， consumers expressed higher satisfaction with the one-star facilities，the lowest rated，than with the five-star ones. (More on this study and the star ratings will appear in a subsequent post.)[K] Before we collectively tear our hair out—how are we supposed to find our way in a landscape this confusing?—here is a thought from Dr. Philip Sloane， a geriatrician(老年病学专家)at the University of North Carolina：“In a way，that could be liberating for families.”[L] Of course， sons and daughters want to visit the facilities，talk to the administrators and residents and other families， and do everything possible to fulfill their duties. But perhaps they don?t have to turn themselves into private investigators or C ongressional subcommittees. “Families can look a bit more for where the residents are going to be happy，” Dr. Sloane said. And involving the future resident in the process can be very important.[M] We all have our own ideas about what would bring our parents happiness. They have their ideas， too. A friend recently took her mother to visit an expensive assisted living/nursing home near my town. I have seen this place—it is elegant， inside and out. But nobody greeted the daughter and mother when they arrived，though the visit had been planned; nobodyintroduced them to the other residents. When they had lunch in the dining room， they sat alone at a table.[N] The daughter feared her mother would be ignored there，and so she decided to move her into a more welcoming facility. Based on what is emerging from some of this research，that might have been as rational a way as any to reach a decision.36. Many people feel guilty when they cannot find a place other than a nursing home for their parents.37.Though it helps for children to investigate care facilities，involving their parents in the decision-making process may prove very important.38.It is really difficult to tell if assisted living is better than a nursing home.39.How a resident feels depends on an interaction between themselves and the care facility they live in.40.The author thinks her friend made a rational decision in choosing a more hospitable place over an apparently elegant assisted living home.41.The system Medicare developed to rate nursing home quality is of little help to finding a satisfactory place.42.At first the researchers of the most recent study found residents in assisted living facilities gave higher scores on social interaction.43.What kind of care facility old people live in may be less important than we think.44.The findings of the latest research were similar to an earlier multi-state study of assisted living.45.A resident?s satisfaction with a care facility has much to do with whether they had participated in the decision to move in and how long they had stayed there.Section CDirections：There are 2 passages in this section. Each passage is followed by some questions or unfinished statements. For each of them there are four choices marked A)，B)，C) and D). You should decide on the best choice and mark the corresponding letter on Answer Sheet 2 with a single line through the centre.Passage oneQuestions 46 to 50 are based on the following passage.As Artificial Intelligence(AI) becomes increasingly sophisticated，there are growing concerns that robots could become a threat. This danger can be avoided，according to computer science professor Stuart Russell， if we figure out how to turn human values into a programmable code.Russell argues that as robots take on more complicated tasks，it?s necessary to translate our morals into AI language.For example， if a robot does chores around the house， you wouldn?t want it to put the pet cat in the oven to make dinner for the hungry children. “You would want that robot preloaded with a good set of values，” said Russell.Some robots are already programmed with basic human values. For example， mobile robots have been programmed to keep a comfortable distance from humans. Obviously there are cultural differences， but if you were talking to another person and they came up close in your personal space， you wouldn?t think that?s the kind of thing a properly brought-up person would do.It will be possible to create more sophisticated moral machines， if only we can find a way to set out human values as clear rules.Robots could also learn values from drawing patterns from large sets of data on human behavior. They are dangerous only if programmers are careless.The biggest concern with robots going against human values is that human beings fail to so sufficient testing and they?ve produced a system that will break some kind of taboo(禁忌). One simple check would be to program a robot to check the correct course of action with a human when presented with an unusual situation.If the robot is unsure whether an animal is suitable for the microwave， it has the opportunity to stop， send out beeps(嘟嘟声)， and ask for directions from a human. If we humans aren?t quite sure about a decision， we go and ask somebody else.The most difficult step in programming values will be deciding exactly what we believe in moral， and how to create a set of ethical rules. But if we come up with an answer， robots could be good for humanity.46.What does the author say about the threat of robots?A)It may constitute a challenge to computer progranmers.B)It accompanies all machinery involving high technology.C)It can be avoided if human values are translated into their language.D)It has become an inevitable peril as technology gets more sophisticated.47.What would we think of a person who invades our personal space according to the author?A)They are aggressive.B)They are outgoing.C)They are ignorant.D)They are ill-bred.48.How do robots learn human values?A)By interacting with humans in everyday life situations.B)By following the daily routines of civilized human beings.C)By picking up patterns from massive data on human behavior.D)By imitating the behavior of property brought-up human beings.49.What will a well-programmed robot do when facing an unusual situation?A)keep a distance from possible dangers.B)Stop to seek advice from a human being.C)Trigger its built-in alarm system at once.D)Do sufficient testing before taking action.50.What is most difficult to do when we turn human values into a programmable code?A)Determine what is moral and ethical.B)Design some large-scale experiments.C)Set rules for man-machine interaction.D)Develop a more sophisticated program.Passage TwoQuestions 51 to 55 are based on the following passage.Why do some people live to be older than others? You know the standard explanations：keeping a moderate diet，engaging in regular exercise，etc. But what effect does your personality have on your longevity(长寿)?Do some kinds of personalities lead to longer lives?A new study in the Journal of the American Geriatrics Society looked at this question by examining the personality characteristics of 246 children of people who had lived to be at least 100.The study shows that those living the longest are more outgoing， more active and less neurotic (神经质的) than other people. Long-living women are also more likely to be sympathetic and cooperative than women with a normal life span. These findings are in agreement with what you would expect from the evolutionary theory： those who like to make friends and help others can gather enough resources to make it through tough times.Interestingly，however，other characteristics that you might consider advantageous had no impact on whether study participants were likely to live longer. Those who were more self-disciplined， for instance， were no more likely to live to be very old. Also， being open to new ideas had no relationship to long life，which might explain all those bad-tempered old people who are fixed in their ways.Whether you can successfully change your personality as an adult is the subject of a longstanding psychological debate. But the new paper suggests that if you want long life， you should strive to be as outgoing as possible.Unfortunately，another recent study shows that your mother?s personality may also help determine your longevity. That study looked at nearly 28，000 Norwegian mothers and found that those moms who were more anxious， depressed and angry were more likely to feed their kids unhealthy diets. Patterns of childhood eating can be hard to break when we?re adults，which may mean that kids of depressed moms end up dying younger.Personality isn?t destiny(命运)，and everyone knows that individuals can learn to change. But both studies show that long life isn?t just a matter of your physical health but of your mentalhealth.51. The aim of the study in the Journal of the American Geriatrics Society is____.A)to see whether people?s personality affects their life spanB)to find out if one?s lifestyle has any effect on their healthC)to investigate the role of exercise in living a long lifeD)to examine all the factors contributing to longevity52. What does the author imply about outgoing and sympathetic people?A)They have a good understanding of evolution.B)They are better at negotiating an agreement.C)They generally appear more resourceful.D)They are more likely to get over hardship.53. What finding of the study might prove somewhat out of our expectation?A)Easy-going people can also live a relatively long life.B)Personality characteristics that prove advantageous actually vary with times.。