[外语类试卷]大学英语四级模拟试卷949（无答案）.doc

1、大学英语四级模拟试卷 949（无答案）一、Part I Writing (30 minutes)1 For this part, you are allowed 30 minutes to write a short essay entitled My View on Money. You should write at least 120 words following the outline given below:1有人喜欢存钱2有人却喜欢提前消费3我的观点 My View on Money二、Part II Reading Comprehension (Skimming and Sca

2、nning) (15 minutes)Directions: In this part, you will have 15 minutes to go over the passage quickly and answer the questions attached to the passage. For questions 1-7, mark：Y (for YES) if the statement agrees with the information given in the passage;N (for NO) if the statement contradicts the inf

3、ormation given in the passage;NG (for NOT GIVEN) if the information is not given in the passage.1 What is an El NinoAn El Nino is a temporary change in the climate of the Pacific Ocean, in the region around the equator. You can see its effects in both the ocean and atmosphere, generally in Northern

4、Hemisphere winter. Typically, the ocean surface warms up by a few degrees Celsius. At the same time, the place where strong thunderstorms occur on the equator moves eastward. Although those might seem like small differences, it nevertheless can. have big effects on the worlds climate.What muses it?U

5、sually, the wind blows strongly from east to west along the equator in the Pacific. This actually piles up water (about half a meters worth) in the western part of the Pacific. In the eastern part, deeper water (which is colder than the sunwarned surface water) gets pulled up from below to replace t

6、he water pushed west. So, the normal situation is warm water (about 30 ; ) in the west, cold (about 22 ) in the east. In an El Nine, the winds pushing that water around get weaker. As a result, some of the warm water piled up in the west slumps hack down to the east, and not as much cold water gets

7、pulled up from below. Both these tend to make the water in the eastern Pacific warmer, which is one of the signs of an El Nine. But it doesnt stop there. The warmer ocean then affects the windsit makes the winds weaker! So if the winds get weaker, then the ocean gets warmer, which makes the winds ge

8、t weaker, which makes the ocean get warmer. This is called a positive feedback, and is what makes an El Nino grow.So what makes it stop growing?The ocean is full of waves, but you might not know how many kinds of waves there are. Theres one called a Rossby wave that is quite unlike the waves you see

9、 when you visit the beach. It is more like a distant cousin to a tidal wave. The difference is that a tidal wave goes very quickly, with all the water moving pretty much in the same direction. In a Rossby wave, the upper part of the ocean, say the top 100 meters or so, will be leisurely sliding one

10、way, while the lower part, starting at 100 meters and going on down, will be slowly moving the other way. After a while they switch directions. Everything happens very slowly and inside the ocean, and you cant even see them on the surface. These things are so slow; they can take months or years to c

11、ross the oceans. If you had the patience to sit there while one was going by, youd hardly notice it; the water would be moving 100 times slower than walking speed. But they are large, hundreds or thousands of kilometers in length (Not height! Remember, you can hardly see them on the surface), so the

12、y can have an effect on things. Another wave you rarely hear about is called a Kelvin wave, and it had some characteristics in common with Rosaby waves, but is somewhat faster and can only exist closer to the equator (say, within about 5 degrees of latitude around the equator).El Ninos often start w

13、ith a Kelvin wave spreading from the western Pacific over towards South America. Perhaps you saw, on the TV news, the movie (produced by JPL) for the El Nine of 1997/98? It showed a whitish blob(白色团状物) (indicating a sea level some centimeters higher than usual) moving along the equator from Australi

14、a to South America. That is one of the hallmarks of a Kelvin wave, the early part of the El Nino process.When an El Nino gets going in the middle or eastern part of the Pacific, it creates Rossby waves that drift slowly towards Southeast Asia. After several months of traveling, they finally get near

15、 the coast and reflect back. The changes in interior ocean temperature that these waves carry with it “cancel out“ the original temperature changes that made the El Nino in the first place. The main point is that it shuts off when these funny interiorocean waves travel all the way ever to the coast

16、of Asia, get reflected, and travel hack, a process that can take many months.What effects does it have?A strong El Nine is often associated with wet winters over the southern U.S., as well as drought in Indonesia and Australia. Keep in mind that youre not guaranteed these effects even though there i

17、s an El Nino going on; but the El Nino does make these effects more likely to happen. How long does it last?A strong El Nino can last a year or more before conditions return to normal. If you read the bit above about Rossby and Kelvin waves (you did, didnt you?), then you know that it lasts more or

18、less as long as it takes the interiorocean waves to travel all the way over to the coast of Asia, get reflected, and travel back.How often do we get them?El Nino happens irregularly, but if you want to impress people at cocktail parties, you might mention that we usually get one every three to seven

19、 years. Note the word “usually“; sometimes they turn up more frequently, sometimes less.How well can we predict El Nino?On average, complex computer models designed to predict El Nino can successfully do so 12 to 18 months in advance. However, it seems to vary by periods; sometimes El Nino is predic

20、ted quite well, with plenty of advance notice from the models, while other times they are predicted poorly, with the models not picking them up until the El Nino has already started. Trying to fix up the models is one of our research topics here at Scripps.2 An El Nino causes a permanent change in t

21、he climate of the Atlantic Ocean, in the region around the equator.（A）Y（B） N（C） NG3 The normal situation is warm water (about 30 ) in the east, cold (about 22) in the west.（A）Y（B） N（C） NG4 In an El Nino, the winds pushing the water around get weaker. As a result, some of the warm water piled up in t

22、he west slumps back down to the east, and not as much cold water gets pulled up from below.（A）Y（B） N（C） NG5 There are some similarities between a Rossby wave and a tidal wave.（A）Y（B） N（C） NG6 People can hardly ever observe a Rossby wave since it doesnt occur on the surface and the process is very sl

23、ow.（A）Y（B） N（C） NG7 When El Nino reaches a place, the temperature there would change a great deal.（A）Y（B） N（C） NG8 A strong El Nino is often associated with wet winters over the southern U.S., as well as drought in Indonesia, Philippines and Australia.（A）Y（B） N（C） NG9 A strong El Nino can last two o

24、r three years _.10 El Nino occurs irregularly and we sometimes can _.11 Generally, complex computer models can successfully predict El NinoSection 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 b

25、e 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.（A）It wont be any different from the others.（B） It will

26、 be unusually mild.（C） It wont affect the hunters.（D）It will probably be cold.（A）Blame the man for his carelessness.（B） Lend the man her pencil and paper.（C） Ask someone else to help the man.（D）Give the man her notes.（A）She thinks a hairdryer is suitable.（B） She wants to know whats making all the no

27、ise.（C） She isnt sure how practical the mans gift is.（D）She cant hear anything when the hairdryer is on.（A）It is in the center of the campus.（B） It should have a map of the city.（C） It has information about summer camps.（D）It probably has a campus map.（A）Grocer.（B） Taxicab driver.（C） Carpenter.（D）Sh

28、oe maker.（A）He usually talks quietly.（B） He usually assigns homework.（C） He didnt come to class today.（D）He came to class late today.（A）She built a model a week ago.（B） She completed her model quickly.（C） She helped him on Thursday.（D）She thought she could reduce the size.（A）There are many good oran

29、ges in the supermarket.（B） The man has bought the best oranges.（C） She isnt satisfied with the oranges.（D）She has never seen such expensive oranges.（A）To smoke in a public place.（B） To make a fool of oneself.（C） To smoke when a girl is in the room.（D）To spit in the street.（A）Take the place of Ruth a

30、s a tour guide.（B） Ask Ken if he will be at the activity.（C） Help out when he is free.（D）Leave work early if he can.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 o

31、nce. After you hear a question, you must choose the best answer from the four choices marked A, B, C and D.（A）Two.（B） Three.（C） Four.（D）Five.（A）Walk around the apartment for dangerous signs.（B） Check the water and electricity to see if they are working.（C） Make sure there are good locks on all the w

32、indows and doors.（D）Talk to other people who rent apartments in the same building.（A）Deposit some money in a bank.（B） Read the lease carefully and sign it.（C） Ask the landlord for a damage deposit.（D）Sign the contract and pay a security deposit.（A）Three.（B） Five.（C） Two.（D）Four.（A）Upper class.（B） Lo

33、wer class.（C） Working class.（D）Middle class.（A）Football.（B） Baseball, hockey and tennis.（C） Golf and running.（D）Shooting, fishing and horse riding.（A）Birds have to be taught to navigate.（B） A bird that has been caged will not.（C） Some birds cannot fly at night.（D）Some birds seem instinctively to fol

34、low the stars when flying at night.（A）They migrate from North America to the Falkland Islands.（B） They migrate only once during their lifetime.（C） They migrate using what is apparently an inborn navigational ability.（D）They migrate when they are freed from their cages.（A）They find their way by mount

35、ain ranges.（B） They find their way by coastlines.（C） They find their way by river courses.（D）They find their way by the three landmarks mentioned above.（A）They circle helplessly.（B） They fly by radar.（C） They use landmarks.（D）They use the moon.Section CDirections: In this section, you will hear a pa

36、ssage 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 yo

37、u are required to fill in the missing information. For these blanks, you can either use the exact words you have just heard or write down the 31 Carbon monoxide poisoning causes death and injuries throughout the world. The poison gas has been a problem since humans first began burning【B1】_to cook fo

38、od or to create heat during cold weather. More people die from carbon monoxide poisoning in the United States each year than from any other kind of poisoning. Carbon monoxide gas is called the such a silent【B2】_that it is hard for people to【B3 】_it in the air. Yet, carbon monoxide gas is very【B4】_It

39、 steals the bodys ability to use oxygen. Carbon monoxide【B5】_the ability of the blood to carry oxygen to body tissues. It does this by【B6】_with the blood. When carbon monoxide links with the blood, the blood is no longer able to carry oxygen to the tissues that need it.【 B7】_to the body can begin ve

40、ry quickly from large【 B8】_of this gas.【B9 】_and the amount of the gas he or she breathes in. Small amounts of carbon monoxide will cause a persons head to hurt.【B10】_. The room may appear to be turning around. The person may have trouble thinking clearly.【B11】_. They will begin to feel very sleepy

41、and very tired. They may have terrible stomach pains.32 【B1 】33 【B2 】34 【B3 】35 【B4 】36 【B5 】37 【B6 】38 【B7 】39 【B8 】40 【B9 】41 【B10 】42 【B11 】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

42、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 with a single line through the center. You may not use any of the words in the bank more than once.4

43、2 We commonly think of sportsmanship in connection with athletic contests, but it also applies to individual outdoor sports. Not everyone who picks up a fishing rod or goes out with a gun is a sportsman. The sportsman first of all obeys the fish and game laws, not because he is liable to be punished

44、 as a violator, but because he knows that in the main these laws are made for his best interests.The following are some of the things that those who would qualify for membership in the sportsmanship fraternity (圈内人) will do.1. Take no more game than the bag limit provided for by the fish and game la

45、ws. The person who comes back from a trip boasting about the large number of fish or game taken is not a sportsman but a game hog (贪得无厌的捕猎者).2. Observe the unwritten rules of fair play. This means shooting birds only when the birds are “on the wing“. For the same reason, do not use a shotgun to shoo

46、t a rabbit or similar animal while it is sitting or standing still.3. Be careful in removing illegal or undersized fish from the hook. This should be done only after wetting the hands. This is necessary because the body of the fish is covered with a thin, protective film which will stick to your dry

47、 hands. If the hands are dry when the fish is handled, the film is torn from the body of the fish. Without the protective film, the fish is more easily attacked by diseases. If you wish to release a fish that is hooked in such a way that it will be impossible to disengage the hook without badly inju

48、ring the fish, just take a knife and cut the line or leader as dose to the hook as convenient. In a remarkably short time, the hook will break down and the fish will remain almost unharmed. Fish have been known to feed successfully while hooks were still in their lips.4. Be sure of the identity of y

49、our target before you shoot. Many useful and harmless species of wildlife are thoughtlessly killed by the uninformed parson who is out with a gun to kill whatever flies within range.43 In what respect does the author think individual outdoor sports are similar to athletic contests? _.44 A person who goes out fishing with a fishing rod or hunting with a gun is not necessarily _.45 Whats the most important thing a true sportsman should bear in mind when he