大学英语四级模拟试题(九)

《大学英语四级模拟试题(九)》由会员分享，可在线阅读，更多相关《大学英语四级模拟试题(九)（11页珍藏版）》请在装配图网上搜索。

1、大学英语四级模拟试题（9）Directions:There are four reading passages in this part. Each passage isfollowed by some questions. For each question there are four suggested answers marked A, B, C and D. You should choose the one best answer and blacken the corresponding letter on the ANSWER SHEET with a pencil.Passa

2、ge 1How do you send a message to a submerged submarine, particularly one carrying mi Water may not look like a barrier to communications, but appearances are deceiving. Water strongly absorbs all electromagnetic waves except blue green light and extremely low frequency radio waves. The very low freq

3、uency waves now used to contract submarines penetrates only a short distance into the ocean, so the craft must either surface or send up and antenna （天线）to receive messages, thereby increasing its weakness. A laser system -accurate over long distances and capable of carrying more data than the very

4、low frequency waves - would talk to submarine at their normal depths.In the system, a very broad beam spreading out freely in all directions would be scanned（扫描）over thousands of square miles of ocean so that it wouldntendanger boats, birds or fish or the submarines it is supposed to reach.Since onl

5、y a small fraction of the laser system will make its way through the air and ocean, receivers mounted on the submarines must be able not only to detect the laser but also to discriminate between it and sunlight. So, military scientists are now working hard on special filter that allow through only t

6、he precise wavelengths emitted by the laser. The filtered light, when transformedinto electrical signal, can then be decoded. Military planners are confident that laser communication with submarines is feasible.1. Which of the following does the passage mainly discuss?A. Missiles carried by submerge

7、d submarines.B. Messages sent by submerged submarines.C. Blue-green lasers used by submerged submarines.D. The way to send a message to submerged submarines.2. Which of the following is TRUE according to the passage?A. Water is a barrier to radio communication.B. Lasers have found wide application i

8、n submarine communication.C. Water absorbs all kinds of electromagnetic waves.D. Very low frequency radio waves cannot be used to contact submarines.3. Which of the following is NOT true of a laser system?A. It is able to make its way through water.B. It is able to communicate with submarines at wor

9、k.C. Its beam reaches a submerged submarine with the help of an antenna.D. It is able to carry more data than low frequency waves.4. The reference word“ it ” (Sentence 1, para.3) refers to .A. the airB. the laser beamC. the oceanD. the submarine5. Who would be very much interested in the passage?A.

10、Missile buildersB. Military scientistsC. FishermenD. Ship builderPassage 2The West begun to take more notice of the East. The fifth volume of an enormous work re-assessing the Chinese contribution to science and technology is to be published next year. The first volume, which was publishedtwenty yea

11、rs ago, set the tone for the whole work. In it, evidence was given to show that many inventions which, until then, western historians had claimed for Europe, were made first in China. The attempt to rewrite the intellectual history of the world was not received without protest by some reputable hist

12、orians. However , the evidence that has been presented so far in the first four volumes has persuaded many historians who were skeptical at first. Chinas invention of paper , printing, the magnetic compass and gunpowder has never been disputed, but this new history has added advanced bridge design,

13、mechanical clocks, paddle boats and many other inventions to the list.In the four volumes published so far no attempt has been made to explain why China has not kept up with the West in science and technology in modern times. It is probable that the answer is to be found in the social and economic h

14、istory of China, where a static society under a relatively benevolent regime of scholar-gentry contrasts with the potentially revolutionary and dynamic society of the West at the end of the Middle Ages. In recent years, the Chinese. But will Chinagovernment has been making every effort to catch up w

15、ith the West again, and there is little doubt that the gap is being reduced year by yearavoid the Wests mistakes?6. So far , how many volumes have been published?A. Five.B. Four .C. Three.D. None.7. The first volume was published .A. ten years agoB. last yearC. five years agoD. twenty years ago8. In

16、 Line 7, the word“ skeptical means .A. doubtfulB. worriedC. sadD. angry9. Which of the following is not mentioned in the passage?A. Gunpowder .B. Needle.C. Paddle boats.D. Bridge design.10. The best title for this passage is .A. Chinas InventionsB. Comparisons Between the East and the WestC. China I

17、s Catching UpD. Situations in ChinaPassage 3Within fifteen years Britain and other nations should be well on with the building of huge industrial complexes for the recycling of waste. The word rubbish could lose its meaning because everything which goes into the dustbin would be made into something

18、useful. Even the most dangerous and unpleasant wastes would provide energy if nothing else.The new concept of recycling waste is taking shape at the British technological laboratory at Warren Spring, not far from the north of London. Today, the laboratory spends four times as much money in studying

19、recycling as it did five years ago.The latest project is to take a city of around half a million inhabitants and discover exactly what raw materials go into it and what go out. The aim is to find out how much of these raw materials could be provided if a plant for recycling waste were built just out

20、side the city. This plant would recycle not only metal such as steel, lead and copper , but also paper and rubber as well. Methods have been discovered, for example, for removing the ink from newsprint so that the paper can be used again, and for obtaining valuable oils and gases from old motor car

21、types. All these ideas are already being made use of, but what is new is the idea of combining them on such a large scale in a single plant designed to recycle most types of waste.Another new project is being set up to discover the best ways of sorting and separating the rubbish. When this project i

22、s complete, the rubbish will be processed like this: first, it will pass through sharp metal spikes which will tear open the plastic bags in which rubbish is usually packed; then it will pass through a powerful fan to separate the lightest elements from the heavy solids; after that crushers and roll

23、ers will break up everything that can be broken finally, and the rubbish will pass under magnets, which will remove the bits of iron and steel; finely the rubber and plastic will then be sorted out in the final stage.The first full-scale giant recycling plants are, perhaps, fifteenyears away. But in

24、some big industrial areas, where rubbish hasbeen dumped forsolongthatthere are no holes left to fill up with rubbish, these new automatic recycling plants may be built sooner . Indeed, with thegrowing costoftransportingrubbish to more distant dumps, some big cities will be forcedto build their ownre

25、cycling plants before long.11. Projects for recycling waste in Britain .A. will not be started for at least fifteen yearsB. are being developed all over BritainC. have not yet been fully testedD. have been abandoned because they are too expensive12. The purpose of the latest recycling project isA. t

26、o prevent people from putting rubbish into holesB. to find a way of destroying all kinds of wasteC. to extract useful raw materials from the wasteD. to find out how much raw materials should be provided of people want to recycle the waste13. The new type of recycling plant will .A. recycle only pape

27、r and rubberB. not recycle metals, paper or rubberC. recycle paper , rubber and metalsD. not recycle steel, lead or copper14. The first recycling plants .A. have already been built in large industrial areasB. will not be built for at least fifteen yearsC. will probably be built in the next fifteen y

28、earsD. will be too expensive to build near big cities.15. “ Well on with in the first paragraph probably means.A. finished withB. nearing completionC. getting ready to startD. making improvements onPassage 4People with disabilities comprise a large part of the population. It is estimatedthat over 35

29、 million Americanshave physical, mental, or other disabilities.About half of these disabilities are“ developmental, i.e., they occur prior to theindividuals twenty-second birthday, often from genetic conditions, and are severe enough to affect three or more areas of development, such as mobility, co

30、mmunication, employment, etc. Most other disabilities are considered “ adventitious, i.e., accidental or caused by outside forces.Prior to the 20th century, only a small percentage of people with disabilities survived for long. Medical treatment for these disabilities was unavailable. Advancements i

31、n medicine and social services have created a climate in whichpeople with disabilities can expect to have such basic needs as food, shelter, andmedical treatment. Unfortunately, these basics are often not available. Civil liberties such as the right to vote, marry, get an education, and gain employm

32、ent have historically been denied on the basis of disability.In recent decades, the disability rights movement has been organized to fightagainst these infringements of civil rights. Congress responded by passing major legislation recognizing people with disabilities as a protected class under civil

33、 rights statutes.Still today, people with disabilities must fight to live their lives independently. Itis estimated that more than half of qualified Americans with disabilities are unemployed, and a majority of those who do work are underemployed. About two-thirds live at or below the official pover

34、ty level.Significant barriers, especially in transportation and public awareness, preventdisabled people from taking part in society. For example, while no longer prohibited by law from marrying, a person with no access to transportation is effectively excluded from community and social activities w

35、hich might lead to the development of long-term relationships.It will only be when public attitudes advance as far as laws have that disabled people will be fully able to take their rightful place in society.16. A “ developmental disability .A. develops very slowly over timeB. is caused forcesC. occ

36、urs in youth and affects developmentD. is getting more and more severe17. Most disabled people used to die early because .A. disabilities destroyed major bodily functionsB. they were not very well looked afterC. medical techniques were not availableD. they were too poor to get proper treatment18. In

37、 the authors opinion, to enable the disabled people to take their rightful place in society.A. more laws should be passedB. public attitudes should be changedC. government should provide more aidsD. more public facilities should be set up19. Which of the following cannot be inferred from the passage

38、 ?A. Many disabled people may remain single for their whole life.B. The public tends to look down upon the disabled people.C. The disabled people feel inferior to those surrounding them.D. Discriminatory laws prevent the disabled from mixing with others.20. The best title for this passage might be .

39、A. Handicaps of People with DisabilitiesB. The difficulties of the DisabledC. The Causes for DisabilitiesD. Medical Treatments for DisabilitiesPart III Vocabulary and Structure (20 minutes)Directions: There are 30 incomplete sentences in this part. For each sentence there are four choices marked A.,

40、 B., C. and D. Choose the ONE answer that best completes the sentence. Then mark the corresponding letter on the Answer Sheet with a single line through the centre.21. The guard walked through the train everyones ticket.A. inspectingB. overlookingC. reviewingD. conducting22. It is quite natural that

41、 the customs of all national minorities .A. would be respectedB. were respectedC. be respectedD. had been respected23. I slipped on the stairs and fell down, breaking my leg.A. soB. thusC. henceD. therefore24. He tried to read but the words on the page made no for him.A. messageB. explanationC. sens

42、eD. impression25. They lost their way in the forest, and made matters worse was that night began to fall.A. itB. whichC. whatD. that26. Since there were five different of the accident, it was difficult to know what really happened.A. outcomesB. interpretationsC. quotationsD. paragraphs27. Craig assu

43、red his boss that he would all his energies in doing the new job.A. call atB. call onC. call offD. call forth28. The worlds governments have done nothing to combat the threat of nuclear accidents.A. incidentallyB. vitallyC. virtuallyD. identically29. The people who objected to the new approach were

44、told that since work had already started there was no point in .A. denyingB. upsettingC. protestingD. competing30. He just couldnt what in the world she had been talking about all the time.A. figure outB. catch onC. set outD. work on31. second thoughts Ive decided against buying a new tape recorder.

45、A. OnB. WithC. AtD. But32. Scientists say it may be five or ten years it is possible to test this medicine on human patients.A. sinceB. beforeC. afterD. when33. The police will discover the truth sooner or later, whether you try to the factor not.A. cut backB. set backC. keep backD. look back34. not

46、hing to talk about, the head said good-bye and went out of the room.A. There wasB. BeingC. As there beingD. There being35. Johnson offered a reward to would find the lost ring for his wife.A. whoB. whomC. whoeverD. whomever36. This is the reason I came here.A. thatB. whatC. for whichD. of which37. I

47、n the past men generally preferred that their wives at home.A. workedB. would workC. workD. to work38. Mistakes carelessness may have serious consequences.A. due toB. thank toC. owing toD. because of39. It seems to be high time that this argument put to an end.A. must beB. isC. wereD. should be40. T

48、he child was . He made up a wonderful story when he was given only the beginning of it.A. imaginalB. imaginaryC. imageryD. imaginative41. She will come to call on the moment she her work.A. has finishedB. had finishedC. finishesD. will finish42. Having missed that last bus, Bob had no alternative a

49、taxi home though he did not like the idea.A. but to takeB. take to butC. to but takeD. to take but43. I would have gone to visit him in the hospital, had it been at all possible, but I fully occupied the whole of last week.A. wereB. had beenC. have beenD. was44. got on the train when it started to m

50、ove.A. I Rarely hadB. Scarcely had IC. No sooner I hadD. No sooner had I45. Great efforts to increase agricultural production must be made if food shortage avoided.A. will beB. can beC. has beenD. is to be46. In fact, he would rather leave for Beijing in Shanghai.A. than stayingB. than have stayedC.

51、 than stayD. to stay47. The boy walked quietly into the room awake his room mates.A. in order to notB. so as not toC. for not toD. so as to48. Here is a message of importance to every man and woman who .A. votesB. voteC. votingD. are voting49. The farmer used wood to build a house to store grains.A. with whichB. whereC. whichD. in which50. For nearly four hours they waited for the decision, only to come again next day.A. they were toldB. to be toldC. were toldD. being told