大学四级-208及答案解析.doc

《大学四级-208及答案解析.doc》由会员分享，可在线阅读，更多相关《大学四级-208及答案解析.doc（28页珍藏版）》请在麦多课文档分享上搜索。

1、大学四级-208 及答案解析(总分：710.00，做题时间：90 分钟)一、Part Writing(总题数：1，分数：106.50)1.Directions: For this part, you are allowed 30 minutes to write a short essay based on the picture below. You should start your essay with a brief account of the impact of the Internet on the way people gather news and then explain

2、whether print newspapers will disappear. You should write at least 120 words but no more than 180 words. （分数：106.50）_二、Part Listening Com(总题数：0，分数：0.00)三、Section A(总题数：4，分数：106.50)（分数：35.50）A.She is seriously sick.B.She will not travel by plane.C.She will go there by train.D.She will do as the man s

3、uggests.A.It is Bill who wears long hair first.B.Boys in the class like wearing suit.C.The man likes long hair very much.D.Bill is the only boy who wears long hair.A.Boring.B.Informative.C.Interesting.D.Confusing.A.She won“t go overseas.B.She values the scholarship a lot.C.She will accept the offer.

4、D.She doesn“t need the scholarship.A.The time to depart.B.The booking of ticket.C.The plan for business.D.The schedule for a trip.（分数：21.30）A.The man should take her words seriously.B.She is regretful the man recovers too slowly.C.The man should not drink much when he is ill.D.She is unhappy for not

5、 being invited to the Smiths.A.The woman doesn“t understand the game well.B.The man doesn“t understand the game well either.C.The woman thinks that basketball is a relaxing game.D.The man doesn“t think that basketball is a good sport.A.Make a list of what he has to do.B.Schedule an eye exam without

6、delay.C.Buy a calendar to remind him of the appointment.D.Get over his fear of seeing an eye doctor.Questions 9 to 12 are based on the conversation you have just heard. （分数：28.40）A.They are looking for an apartment to live in.B.They are discussing living places and children“s education.C.They are co

7、mplaining about their children.D.They are planning for the next weekend.A.There“s much to do besides work and study.B.It“s convenient for people to go anywhere.C.The natural environment is beneficial to children.D.The countryside is a perfect place for weekends.A.The children are too young to benefi

8、t from city life.B.Even adults themselves cannot go everywhere in the city.C.There is a lot to see and do for children and adults.D.There isn“t a lot to see and do for children.A.She is a full-time housewife.B.She does not care for her children.C.She used to live in the suburbs in her childhood.D.Sh

9、e will go to a museum next weekend.Questions 13 to 15 are based on the conversation you have just heard. （分数：21.30）A.It“s rather expensive.B.It has plenty of light.C.It“s too small for the man.D.It doesn“t have many closets.A.Each renter is given a parking lot.B.It“s difficult to find a parking plac

10、e.C.The renter has to pay for parking.D.The renter can use any space in the parking area.A.He is unimpressed by what the woman told him.B.He doubts he can afford it.C.He doesn“t think it“s suitable for him.D.He“s enthusiastic about it.四、Section B(总题数：0，分数：0.00)五、Passage One(总题数：1，分数：21.30)Questions

11、16 to 18 are based on the passage you have just heard. （分数：21.30）A.Behaving in an abnormal way.B.Occurrence of the strange ideas.C.Emotional, mental and physical problems.D.Losing control over the thoughts.A.It is with the help of medication.B.It is through inner work and training.C.It involves much

12、 help from the external.D.It involves the psychological help.A.Return to the help of the pleasant people.B.Write down the negative thoughts and read them.C.Keep the idea of dealing with the negative thoughts.D.Divert the attention to the positive thoughts and images.六、Passage Two(总题数：1，分数：21.30)Ques

13、tions 19 to 21 are based on the passage you have just heard. （分数：21.30）A.She flew an airplane.B.She went on a hot air balloon ride.C.She entered a competition.D.She moved into a retirement community.A.To build up her own reputation.B.To compare their health condition.C.To show her admiration for him

14、.D.To make her argument persuasive.A.The beautiful clouds.B.The company of Jay.C.The wonderful view.D.The one-minute free fall.七、Passage Three(总题数：1，分数：28.40)Questions 22 to 25 are based on the passage you have just heard. （分数：28.40）A.They were invented by European armies.B.They have a history of mo

15、re than 2,800 years.C.They used to supply power to electric lights and radio in remote areas.D.They have rarely been used since electricity was discovered.A.Sailing a boat.B.Grinding wheat into flour.C.Producing electricity.D.Pumping water from underground.A.Wind power is cleaner.B.It is one of the

16、oldest power sources.C.It was cheaper to create energy from wind.D.The supply of coal and gas failed to meet needs.A.The advantage of wind power.B.The design of wind power plants.C.The worldwide movement to save energy.D.The global trend towards producing power from wind.八、Section C(总题数：1，分数：71.00)S

17、plitting dinner checks can cause a splitting headache, even when the diners are mathematics majors. Three computer science graduate students at the US“s Carnegie Mellon University were 1 worrying about shared bills so they decided to act. Shashank, Amit and Ashwin created a free 2 , B, in September,

18、 to help people remember who owes what and to whom. Instead of trying to 3 how every dinner bill should be split, the site allows users to form groups of friends or housemates to track 4 expenses over longer periods of time. For example, if one housemate pays for dinner for everyone, he earns 5 in h

19、is Buxfer group and pays less on next month“s rent. Buxfer quickly became 6 among college students and young professionals who often pool expenses and borrow small amounts from each other. News of the site has spread 7 by word of mouth and on blogs. It now has about 3,000 users who have made 8 of mo

20、re than US$875,000. Buxfer automatically e-mails users about new transactions. When a user logs on to Buxfer, the 9 he/she owes or is owed is shown on the homepage. Users can also leave notes for each other on the site. Buxfer has been an eye-opener for Veda as it has shown him how much money was fl

21、owing between him and his friends. The site is helping him track US$300 that others owe him, 10 the US$1,500 he owes to a friend who bought an airline ticket to India for him. （分数：71.00）填空项 1:_填空项 1:_填空项 1:_填空项 1:_填空项 1:_填空项 1:_填空项 1:_填空项 1:_填空项 1:_填空项 1:_九、Part Reading Compr(总题数：0，分数：0.00)十、Section

22、 A(总题数：1，分数：35.50)Whether you think you need daytime rest or not, picking up a nap (午睡) habit is a smart, healthy move. The Mayo Clinic says naps 36 relaxation, better mood and alertness, and a sharper working mind. Several studies have shown that people remember new information better when they tak

23、e a nap shortly after learning it. And, most 1 , a 2007 study of nearly 24,000 Greek adults in the Archives of Internal Medicine found that people who napped 2 had a 37 percent reduced risk of dying from heart disease compared to people who didn“t nap. Of course, napping isn“t right for everyone. If

24、 you“re suffering from inability to sleep, naps that are too long or taken too late in the day can 3 with your ability to fall or stay asleep at night. But for most, naps can make you feel sharper and happier. Naps provide different benefits, 4 on how long they are. A 20-minute nap will boost alertn

25、ess and concentration; a 90-aninute snooze (小睡) can enhance creativity. According to , you 5 a natural dip in body temperature between 1 p.m. and 3 p.m. A short nap at this time can boost alertness for several hours. 6 napping on the couch instead of in bed, so you are less 7 to snooze for too long

26、. Surprisingly, the best place to take a nap may be a hammock (吊床). A Swiss study 8 last year found that people fell asleep faster and had deeper sleep when they napped in a hammock than in a bed. That same rocking motion that puts babies to sleep works 9 for grown-ups, too. Aillustrates Binterfere

27、Cpronounced Dfocusing Epromote Fwonders Gincredibly Hinclined Idepending Jpublished Kregularly Lpassions Mexperience Nsubjected Orecommends（分数：35.50）十一、Section B(总题数：1，分数：71.00)Why Our Turbulent Weather Is Getting Even Harder to PredictThe cold snap, fingers crossed, is about to end But extreme weat

28、her snow, floods anddrought is the new norm.ABritain“s weather excelled itself last week. It produced an Easter Sunday that was the coldest on record in the UK. Temperatures stuck below zero in many regions; freezing conditions continued to disrupt transport; and experts warned of increasing threats

29、 to animals and birds already struggling to survive loss of habitat and climate change. The start of British Summer Time last Sunday night was marked in Braemar by temperatures that fell to -11. For good measure, an unappetising April looks likely to follow this misery. BThe persistence of the sprin

30、g“s awful weather is particularly striking for it comes after a series of other extreme meteorological (气象的) events in recent years. Last winter, a severe drought triggered stern warnings by the Environment Agency that water rationing and hosepipe (水管) bans would soon have to be introduced until sev

31、eral months of torrential rain produced widespread flooding. Our weather, always unpredictable, is now fluctuating on a grand scale and becoming increasingly hard to forecast long-term. The challenge for meteorologists is to explain these unexpected outbreaks of climatic unpleasantness. C“There is n

32、o doubt that the recent weather has been highly changeable on both sides of the Atlantic,“ said meteorologist Nicholas Klingaman of Reading University. “We have blizzards and flooding. America has had droughts and scorching temperatures. Nor is it difficult to pinpoint the immediate cause.“ Klingama

33、n said. “The problem lies with the jet stream, a narrow band of strong winds that sweeps round the planet between the tropics and the Arctic. Its behaviour has changed dramatically in the past few years and has produced these lengthy bouts of extreme weather. The real question, of course, is an obvi

34、ous one: Why has the jet stream changed its behaviour?“ The answer is very worrying, for it transpires that meteorologists may find it increasingly hard to make long-term assessments of future weather with their former confidence. The planet“s weather systems are being stirred and shaken and the cau

35、se is closely linked to climate change, the result of the trillions of tonnes of carbon that we have been pumping into our atmosphere. DThe jet stream gets its name because it circulates at an altitude of around 10km to 15km, the height at which most jet planes fly. It runs from west to east, a feat

36、ure that can give aircraft significant boosts on eastbound flights across the Atlantic and Pacific. However, in recent years this giant river of air has begun to meander (蜿蜒而流) and to slow down, trapping regions of high or low pressure over the same part of the globe, including the freezing air that

37、 has hung over Britain for the last six weeks. As to the reason for this change in the jet stream“s flow, more and more meteorologists now point to global warming. In particular, they pinpoint the most dramatic manifestation of climate change on the planet today the warming of the Arctic as the most

38、 likely culprit for the destabilising weather patterns we have been experiencing. “The Arctic is warming faster than any other place on Earth,“ said meteorologist Jennifer Francis of Rutgers University, New Jersey. “Arctic temperatures have increased at more than twice the global rate. You can see t

39、his in the sea ice in summer there. In just the three decades, it has declined by 40%. About 1.3m square miles of sea ice have disappeared. That is an astonishing amount of ice to lose and it shows just how much heating is going on up there. More to the point, that warming is now changing weather pa

40、tterns across the northern hemisphere.“ EHow the warming of the Arctic affects our weather has much to do with the origins of the jet stream. Air in the tropics is warmer than the Arctic and it rises. As a result, the atmosphere there is higher than it is over the Arctic. “A gradient is created and

41、air slides down this atmospheric hill towards the Arctic,“ said Francis. “This flow of air, high up in the atmosphere, from the tropics to the Arctic, is the crucial ingredient in the creation of the jet stream.“ “The world rotates from west to east, however, and that rotation whips up this northwar

42、d flow of air that descends over higher latitudes and sends it flying east round the globe as the jet stream. Earth rotates from west to east and that is what drives the jet stream in the same direction.“ FUntil recently, this mighty stream of air flew round the planet, in a slightly wavy path, betw

43、een 30 and 60 degrees north. However, times are changing and so is our atmosphere. “The trouble is that the gradient between the atmosphere in the lower latitudes and in the Arctic is being disrupted by global warming,“ said Francis. “As the Arctic heats up disproportionately, so does the atmosphere

44、 at the north pole and as it warms up, it rises. The net effect has been to erode the gradient between the top of the atmosphere over the tropics and the top of the atmosphere over the Arctic. Less air pours down towards the north pole and less air is whipped up by Earth“s rotation to form the jet s

45、tream. It is becoming less of a stream and is behaving more like a sluggish estuary that is meandering across the upper atmosphere at middle latitudes.“ GThe effects of this meandering are now being felt. As the jet stream slows, weather patterns tend to stick where they are for longer. In addition,

46、 the modest waves in the stream have increased in amplitude (波幅) so that they curve north and south more frequently, bringing more weather systems northwards and southwards. Hence the cold conditions that have been brought south over Britain and which have persisted for so long. HMost scientists bel

47、ieve the link between rising Arctic temperatures and the resulting disruption of the jet stream is the most convincing explanation for the increased bouts of extreme weather in the northern hemisphere. However, some sound notes of caution. “I think the link between Arctic warming and weather disrupt

48、ion is convincing but it is not the only possible explanation,“ said Klingaman. “For example, there is a phenomenon known as the Madden-Julian oscillation (震荡) which controls how rainfall is distributed around the tropics on a weekly and monthly basis and it has been shown to influence the position of the jet streams. It is possible this oscillation may have been involved in some way in our changing weather patterns.“ IProfessor Piers Forster of Leeds University also urged caution. “I think it is too early to say that climate change is definitel