全国大学英语四级模拟题8及答案

1、Part Reading Comprehension (35 minutes) Directions: There are 4 passages in this part. 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 the A

2、nswer Sheet with a single line through the centre. Questions 21 to 25 are based on the following passage: Increasingly, over the past ten years, peopleespecially young peoplehave become aware of the need to change their eating habits, because much of the food they eat, particularly processed foods,

3、is not good for health. Consequently,there has been a growing interest in natural foods: foods which do not contain chemical additives and which have not been affected by chemical fertilizers widely used in farming today. Natural foods, for example, are vegetables, fruit and grain which have been gr

4、own in soil that is rich in organic matter.In simple terms, this means that the soil has been nourished by unused vegetable matter, which provides it with essential vitamins and minerals. This in itself is a natural process compared with the use of chemicals and fertilizers, the main purpose of whic

5、h is to increase the amount but not the quality of foods grown in commercial farming areas. Natural foods also include animals which have been allowed to feed and move freely in healthy pastures. Compare this with what happens in the mass production of poultry: there are battery farms, for example,

6、where thousands of chickens live crowded together in one building and are fed on food which is little better than rubbish. Chickens kept in this way are not only tasteless as food; but also produce eggs which lack important vitamins. There are other aspects of healthy eating which are now receiving

7、increasing attention from experts on diet. Take, for example, the question of sugar. This is actually a nonessential food! Although a natural alternative, such as honey, can be used to sweeten food if this necessary, we can in fact do without it. It is not that sugar is harmful in itself. But it doe

8、s seem to be additive: the quantity we use has grown steadily over the last centuries and in Britain today each person consumes an average of 200 pounds a year! Yet all it does is provide us with energy, in the form of calories. There are no vitamins in it, no minerals and nofiber. It is significant

9、 that nowadays fiber is considered to be an important part of a healthy diet. In white bread, for example ,the fiber has been removed. But it is present in unrefined flour and of course in vegetables. It is interesting to note that in countries where the national diet contains large quantities of un

10、refined flour and vegetables, certain diseases are comparatively rare. Hence the emphasis is placed on the eating of whole meal bread and more vegetables by modern experts on “healthy eating”. 21.Which statement best expresses the main idea of this article? A) People should eat any food to keep them

11、selves healthy and strong. B) People should eat natural foods to keep themselves healthy and strong. C) People should eat fiber foods to keep themselves healthy and strong. D) People should eat vegetables to keep themselves healthy and strong. 22.“Particularly processed foods” means _. A) foods whic

12、h are particularly processed by adding chemical additives B) foods which are particularly made by commercial farms C) foods which are specially produced by commercial factories D) foods which are not specially made by adding anything 23.Natural foods means _. A) foods good for health B) foods not go

13、od for health C) foods such as vegetables, fruit and grain from rich organic matters soil D) crops from rich organic matters soil and meats of animals from healthy pastures 24.There are no vitamins, no minerals and no fibers in _. A) natural foods C) sugar B) animal meats D) fruit 25.“Yet all it doe

14、s is provide us with energy, in the form of calories.” It means _. A) processed food provides us with energy B) natural food furnishes us with vitamins and minerals C) sugar gives us enough energy in the form of calories D) fiber helps us to digest food Questions 26 to 30 are based on the following

15、passage: With a tremendous roar from its rocket engine, the satellite is sent up into the sky. Minutes later, at an altitude of 300 miles, this tiny electronic moon begins to orbit about the earth. Its radio begins to transmit an astonishing amount of information about the satellite's orbital pa

16、th, the amount of radiation it detects, and the presence of meteorites. Information of all kinds races back to the earth.No human being could possibly copy down all these facts, much less remember and organize them. But an electronic computer can. The marvel of the machine age, the electronic comput

17、er has been in use only since 1946. It can do simple computationsadd,subtract, multiply and dividewith lighting speed and perfect accuracy. Some computers can work 500,000 times faster than any person can. Once it is given a “program” that is, a carefully workedout set of in structions devised by a

18、technician trained in computer language a computer ca gather a wide range of information for many purposes. For the scientist it can get information from outer space or from the depth of the ocean. In business and industry the computer prepares factory inventories, keeps track of sales trends and pr

19、oduction needs, mails dividend checks, and makes out company payrolls. It can keep bank accounts up to date and make out electric bills. If you are planning a trip by plane, the computer will find out what to take and what space is available. Not only can the computer gather facts, it can also store

20、 them as fast as they are gathered and can pour them out whenever they are needed. The computer is really a highpowered“memory” machine that “has all the answers”or almost all.Bes ides gathering and storing information, the computer can also solve complicated problems that once took months for peopl

21、e to do. At times computers seem almost human. They can “read” handprinted letters, play chess, compose music, write plays and even design other computers. Is it any wonder that they are sometimes called “thinking” machines? Even though they are taking over some of the tasks that were once accomplis

22、hed by our own brains, computers are not replacing us at least not yet. Our brain has more than 10 million cells. A computer has only a few hundred thousand parts. For some time to come, then, we can safely say that our brains are at least 10, 000 times more complex than a computer.How we use them i

23、s for us, not the computer, to decide. 26.In the first paragraph, the author thinks an electronic computer can _. A) copy down all the facts B) remember all the facts C) organize the facts and everything D) copy down, remember and organize all the facts 27.“Program” means _. A) a plan of what is to

24、be done B) a complete show on a TV station at a fixed time table C) a scheduled performance D) series of coded instructions to control the operations of a computer 28.The computer is a high powered “memory” machine, which _. A) has all the ready answers or almost all to any questions B) can remember

25、 everything C) can store everything and work for you D) has all the answers or almost to all the information that has been stored 29. “Thinking” machines suggest that _. A) they can “read” hand printed letters etc B) they really can think and do many other jobs C) they even design other computers D)

26、 they can't think, but can do something under human control 30.Can computers do whatever they want to do?Why? A) Yes, because some computers can work 500,000 times faster than any person can. B) No, because they normally have a few hundred thousand parts. C) No, because human brains are at least

27、 10000 times more complex than any computers. D) No, because how a computer works is decided by human. Questions 31 to 35 are based on the following passage: No one expressed this attitude more strongly than Noah Webster (17581843). Born near Nartford, Connecticut, he received his education at Yale

28、College and later began to practise law. But business in this profession was slow, and he was forced to turn to teaching. As a teacher, he soon discovered that the English school books then in use were unsatisfactory, and the American Revolution reduced the supply of such books as there were. Webste

29、r therefore began to work on three simple books on English, a spelling book, a grammar, and a reader, and these were the first books of their kind to be published in this country. The success of the first part was surprisingly great. It was soon issued again under the title THE AMERICAN SPELLING BOO

30、K, and in this form about 80 million copies were sold during the next hundred years. From a profit of less than one cent a copy, Webster got most of his income for the rest of his life. Not only did the little book have great influence on many generations of school children, but it also had the effe

31、ct or turning its author's attention to questions of language. In 1806 he produced a small dictionary,and this was followed by his greatest work, AN AMERICAN DICTIONARY OF THE ENGLISH LANGUAGE, published in two volumes in1828. In both of these works and in many smaller writings he had one purpos

32、e: to show that the Englsih language in his country was a truly American thing, developing in its own special way and deserving to be considered from an independent, American point of view. As he himself wrote,“ It is not only important, but in a degree necessary, that the people of this country sho

33、uld have an AMERICAN DICTIONARY of the English language; for, although the body of the language is the same as in Englandsome differences exist. No person in this country will be satisfied with the English definitions of the words congress, senate, assembly, court, and so forth, for although these a

34、re words used in England, yet they are applied in this country to express ideas which they do not express in that country.” By giving American meanings and American pronunciation, by adopting a number of American spellings, and especially by introducing quotations from American authors beside those

35、from English literature, he was able, to a great extent, to justify the title of his work. If, after a hundred years, some people still doubt the existence of a separate American language, his efforts, nevertheless, have left a lasting mark on the language of his country. 31.Webster first tried to e

36、arn his living in the field of _. A) education C) law B) journalism D) medicine 32.Webster earned most of his money from the sale of his _. A) dictionary of 1828 C) grammar B) spelling book D) reader 33.Apparently Webster published his first books while he was a _. A) teacher C) lawyer B) student D)

37、 doctor 34.This article could be entitled _. A) Noah Webster and American English Spelling B) Noah Webster, the author of An American Dictionary of the English Lan guage C) Noah Webster D) Noah Webster and American English Grammar 35.According to the article, Webster _. A) had created American Engli

38、sh and its usages B) had discovered American English and improved it C) had tried his best and left a milestone on the language of his country D) had left a language which was not used in England. Questions 36 to 40 are based on the following passage: Once upon a time, the United States seemed to ha

39、ve plenty of land to go around. Plenty of rivers to dam and plenty of rural valleys left over. Plenty of space for parks and factories. Plenty of forests to cut and grasslands to plow. But that was once upon a time. The days of unused land are over.Now the land has been spoken for, fenced off, carve

40、d up into cities and farms and industrial parks, put to use. At the same time, the population keeps growing. People need places to work and places to play. So we need more sites for more industries, more beaches for more sunbathers, and more clean rivers for more fishers. And it isn't just a mat

41、ter of population growth. Our modern technology has needs that must be met, too. We need more coal for energy, and we need more power plants; cars must have highways and parking lots, and jets must have airports. Each of these land uses swallows up precious space.Highways and expressways alone take

42、some 200,000 acres each year. And urban sprawl the spreading out of cities is expected to gobble up vast areas of land by the year 2,000. But there is only so much land to go around. It is always hard to decide. Take, for example, a forest. A forest can be a timber supply. It can provide a home for

43、wildlife. It is scenery and a recreation area for man. It is soil and watershed protection. 36.“the United States seemed to have plenty of land to go around ” means that _. A) the United States seemed to have vast land for its people to walk around B) the United States seemed to have enough land for

44、 sharing with everyone C) the United States could provide whatever its inhabitents' needs D) the United States was not able to allow its people to do what they wanted to 37.The sentence of “Plenty of rivers to dam and plenty of rural valleys left over” suggests that _. A) the United States had a

45、 lot of rivers to dam and many rural valleys, too B) the rivers could be damed later C) rural valleys would be considered in the future D) people needn't think of the rivers and valleys 38.“Now the land has been spoken for, ” tells us that _. A) today, land has shown its values B) now, people ha

46、ve said something about land C) nowadays, land has been claimed by human beings D) recently, people spoke for the land 39.The phrase of “swallows up” informed us that _. A) these usages of land have good results B) these lands must be used totally C) the precious space was taken completely D) the pr

47、ecious space were eaten up 40.The word “sprawl” indicates that _. A) cities are developing very fast to meet the people's demands B) urban areas are diminishing smoothly C) urban areas are enlarging steadily in a planned way D) cities are spreading out without any plans Part Vocabulary and Struc

48、ture (20 minutes) Directions: There are 30 incomplete sentences in this part. For each sentence there are four choices marked A),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. 41.So f

49、rightened _ in darkness that she did not dare to move an inch. A) was the girl C) such a girl was B) the girl was D) that the girl was 42.The students _ the exercises, the teacher went on to explain the text. A) doing C) having done B) did D) to do 43.They talked about things and persons _ they reme

50、mbered in the school. A) who C) that B) which D) what 44.Such an obvious error _ this would be avoided, if you were more careful. A) like C) as B) with D) of 45.They remained full of hope and determination _ their repeated failures. A) instead of C) because of B) in search of D) in spite of 46.The c

51、ar _ seventy miles per hour until it reaches the riverside at about ten o'clock tonight. A) goes C) went B) will go D) will be going 47.He kept rubbing the child until _ he fell asleep. A) long after C) before long B) soon after D) long before 48. _ his youth and inexperience, he is not suitable

52、 for the job. A) Seeing C) Having seen B) Seen D) To see 49.When you _ the test, check your papers before you hand them in. A) will finish C) will have finished B) are finishing D) have finished 50.I am interested in _ you have told me. A) which C) that B) all what D) all that 51.No other quality is

53、 more important for a scientist to acquire _ to observe carefully. A) as C) and B) than D) but 52.They were just about to give up the question, _ suddenly they found the answer. A) as C) when B) while D) the moment 53.It was _ then that I came to know that knowledge comes from practice. A) until C)

54、till B) not until D) since 54.The world's supplies of petroleum _. A) have been gradually being exhausted B) have gradually exhausted C) are gradually exhausted D) are being gradually exhausted 55.Everything depends on _ we have enough time. A) if C) whether B) when D) that 56.I'd just as so

55、on _ rudely to her. A) you not speak C) you didn't speak B) your not speaking D) you hadn't spoken 57.The concert was so interesting that we all felt it ended _ soon. A) but too C) very B) only too D) too 58.The roar of the crowd finally _ to a murmur. A) reduced C) decreased B) diminished D

56、) cut down 59.It's very discourteous to _ during some one's conversation. A) inspect C) interfere B) interrupt D) instruct 60.Sometimes even the smallest thing will upset an _ person. A) annoyed C) irritable B) irritated D) angry 61.The conversation was so interesting that we were _ of the lateness of the hour. A) negligible C) irrelevant B) inattentive D) oblivious 62.The rainbow is one of the most beautiful _ in nature. A) phenomenon C) appearance B) phenomena D) experience 63.It is _ that nowadays fiber is con