英语四级模拟试卷

1、congratulations and best wishes to those guys who stay the course to the end _from shorebinga model test for cet4part writing(30 minutes) directions: for this part, you are allowed 30 minutes to write a composition on the topic generation gap. you should write at least 120 words following the outlin

2、e given below in chinese:1. 代沟的表现。2. 代沟出现的家庭原因。3. 代沟出现的社会原因。generation gappart reading comprehension(skimming and scanning) (15 minutes) 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 an

3、swer from the four choices marked a), b), c) and d). for question 8-10, complete the sentences with the information given in the passage. animals on the move it looked like a scene from “jaws” but without the dramatic music. a huge shark was lowly swimming through the water, its tail swinging back a

4、nd forth like the pendulum of a clock.suddenly sensitive nerve ending in the sharks skin picked up vibrations of a struggling fish. the shark was immediately transformed into a deadly, efficient machine of death. with muscles taut, the shark knifed through the water at a rapid speed. in a flash the

5、shark caught its victim, a large fish, in its powerful jaws. then, jerking its head back and forth, the shark tore huge chunks of flesh from its victim and swallowed them. soon the action was over.moving to survivein pursuing its prey, the shark demonstrated in a dramatic way the important role of m

6、ovement, or locomotion, in animals.like the shark, most animals use movement to find food. they also use locomotion to escape enemies, find a mate, and explore new territories. the methods of locomotion include crawling, hopping, slithering, flying, swimming, or walking.humans have the added advanta

7、ge of using their various inventions to move about in just about any kind of environment. automobiles, rockets, and submarines transport humans from deep oceans to as far away as the moon. however, for other animals movement came about naturally through millions of years of evolution. one of the mos

8、t successful examples of animal locomotion is that of the shark. its ability to quickly zero in on its prey has always impressed scientists. but it took a detailed study by duke university marine biologists s. a. wainwright, f. vosburgh, and j. h. hebrank to find out how the sharks did it. in their

9、study the scientists observed sharks swimming in a tank at marine land in saint augustine, fla. movies were taken of the sharks movements and analyzed. studies were also made of shark skin and muscle.skin is the keythe biologists discovered that the skin of the shark is the key to the animals high e

10、fficiency in swimming through the water. the skin contains many fibers that crisscross like the inside of a belted radial tire. the fibers are called collagen fibers. these fibers can either store or release large amounts of energy depending on whether the fibers are relaxed or taut. when the fibers

11、 are stretched, energy is stored in them the way energy is stored in the string of a bow when pulled tight. when the energy is released, the fibers become relaxed.the duke university biologists have found that the greatest stretching occurs where the shark bends its body while swimming. during the b

12、odys back and forth motion, fibers along the outside part of the bending body stretch greatly. much potential energy is stored in the fibers. this energy is released when the sharks body snaps back the other way.as energy is alternately stored and released on both sides of the animals body, the tail

13、 whips strongly back and forth. this whip-like action propels the animal through the water like a living bullet.source of energywhat causes the fibers to store so much energy? in finding the answer the duke university scientists learned that the sharks similarity to a belted radial tire doesnt stop

14、with the skin. just as a radial tire is inflated by pressure, so, too, is the area just under the sharks collagen “radials”. instead of air pressure, however, the pressure in the shark may be due to the force of the blood pressing on the collagen fibers.when the shark swims slowly, the pressure on t

15、he fibers is relatively low. the fibers are more relaxed, and the shark is able to bend its body at sharp angles. the animal swims this way when looking around for food or just swimming. however, when the shark detects an important food source, some fantastic involuntary changes take place.the press

16、ure inside the animal may increase by 10 times. this pressure change greatly stretches the fibers, enabling much energy to be stored.this energy is then transferred to the tail, and the shark is off. the rest of the story is predictable.dolphin has speed recordanother fast marine animal is the dolph

17、in. this seagoing mammal has been clocked at speeds of 32 kilometers (20 miles) an hour. biologists studying the dolphin have discovered that, like the shark, the animals efficient locomotion can be traced to its skin. a dolphins skin is made up in such a way that it offers very little resistance to

18、 the water flowing over it. normally when a fish or other object moves slowly through the water, the water flows smoothly past the body. this smooth flow is known as laminar flow. however, at faster speeds the water becomes more turbulent along the moving fish. this turbulence muses friction and slo

19、ws the fish down.in a dolphin the skin is so flexible that it bends and yields to the waviness of the water.the waves, in effect, become tucked into the skins folds. this allows the rest of the water to move smoothly by in a laminar flow. where other animals would be slowed by turbulent water at rap

20、id speeds, the dolphin can race through the water at record breaking speeds.other animals less efficientnot all animals move as efficiently as sharks and dolphins. perhaps the greatest loser in locomotion efficiency is the slug. the slug, which looks like a snail without a shell, lays down a slimy t

21、rail over which it crawls. it uses so much energy producing the slimy mucus and crawling over it that a mouse traveling the same distance uses only one twelfth as much energy.scientists say that because of the slugs inefficient use of energy, its lifestyle must be restricted. that is, the animals ar

22、e forced to confine themselves to small areas for obtaining food and finding proper living conditions. have humans ever been faced with this kind of problem?1.according to the passage, a shark can use movement to do something except .a )to find foodb) to avoid being chased by its enemiesc) to find a

23、 new place to lived) to show its braveness2.examples of automobiles, rockets and submarines are used to show that .a)humans are the most clever living creatures in the worldb)human inventions enable us to travel in almost any kind of environmentc)humans are very successful in inventing transportatio

24、n toolsd)humans cant move like other animals in any circumstances3.what is the key to the sharks swift locomotion in water?a)the skin. b)the tail. c)the muscle. d)the jaw.4.according to the duke university scientists, when does the shark stretch its collagen fibers to the greatest extent?a)when movi

25、ng its tail rapidly.b)when finding its preys.c)when staying without any movement.d)when bending its body in swimming.5.why is the area just under the sharks collagen fibers similar to a belted radial tire?a)because it is also full of blood pressure.b)because it is also filled of air pressure.c)becau

26、se it is also inflated by pressure.d)because it also can be used again and again.6.a laminar flow is formed when a fish swims _.a)slowly through the water b)rapidly through the waterc)against the current d)at the fastest speed in water7.consuming the equal amount of energy as a slug does, a mouse ca

27、n travel_ as long as it.a)one twelfth times. b)the same.c)12 times. d)1.2 times.8.a shark finds its prey by _.9.according to the passage, _can be compared to the string of a bow for both of them store energy when stretched .10.when the shark detects an important food source, _take place .part iii li

28、stening comprehension (35mins)section adirections: in part a, you will hear short conversations between two people. after each conversation, you will hear a question about the conversation. the questions and the questions will not be repeated. after you hear a question, read the four possible answer

29、s in your test book and choose the best answer. then, on your answer sheet, find the number of the question and fill in the space that corresponds to the letter of the answer you have chosen.11. a go to the football match with the woman.b ask the woman to help him write the term paper on history.c f

30、inish the last tow chapters of history assignment.d take part in the football match.12. a she wants to borrow the mans student cardb the tickets are less expensive than she expectedc she wont be able to get any discount for the ticketd the performance turns out to be disappointing13. a its far from

31、being ready b it contains some valuable ideasc she needs another week to get it ready d it has nothing to do with the internet14. a he is suffering from the difference of time zones.b he has been studying hard at night.c he finds biology difficult fo learn.d he has not adjusted to a new culture.15.

32、a a lesson requires students active involvementb students usually take an active part in a lecturec more knowledge is covered in a lectured there is a larger group of people interested in lesson16.a the pictures of night view are really better than he expectedb he didnt know how he finished his role

33、 in the playc the film hasnt been processed yetd he didnt have enough film17. a he often complains. b he is a short person.c he is worried about something. d he is a happy sort of person.18. a he cant miss the bank. b she forgot to tell him one thing.c its no use going there. d the bank is close to

34、the corner.questions 19-21 are based on the conversation you have just heard19. a a vacation trip to yellowstone parkb a lecture by a visiting professorc her biology thesisd a research project on yellowstone park20. a more buffalo are surviving the winterb fewer buffalo are dying of diseasec more bu

35、ffalo are being bornd fewer buffalo are being killed by hunters21. a she is from wyoming and eager to visit yellowstone parkb she needs the money to continue her studyingc she has been studying animal diseasesd her thesis adviser is heading the projectquestions 22-25 are based on the conversation yo

36、u have just heard.22.a) she knew about it by reading a booklet.b) she knew about it by reading a student union introduction.c) she knew about it by reading a newspaper.d) she knew about it by reading a magazine.23.a) because they want to preserve the natural beauty of the campus.b) because they want

37、 to protect the students right for living space.c) because they want to conserve the place for future use.d) because they want to sell the place for a better price.24. a) they will organize a meeting to discuss a proposal.b) they will organize a protest to express their opposition.c) they will organ

38、ize an appeal-letter signing activity.d) they will organize a march around the campus.25. a) she will participate in the protest.b) she will sign the appeal letter.c) she will take part in a meeting of the student action union.d) she will attend her class as usual.section bdirections: in this sectio

39、n, 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 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 t

40、he answer sheet 2 with a single line through the centre.passage onequestions 26 to 28 are based on the passage you have just heard.26. a how much exercise they get every day?b what they are most worried about?c how long their parents accompany them daily?d what entertainment they are interested in?2

41、7. a get enough entertainmentb have more activitiesc receive early educationd have regular checkups28. a be no place for playb be near a common areac have no tv setsd have a computer for studypassage twoquestions 29-32 are based on the passage you have just heard.29. a) to look for two of her close

42、friends.b) to stay at home and study.c) to share an apartment with friends.d) to move out and live alone.30. a) she couldnt find a good place to stay.b) her friend and she couldnt afford the rent.c) a friend left her for works sake.d) she quarreled with her friends.31. a) because her home was far wa

43、y form school.b) because her parents asked her to do so.c) because she was bored living outside.d) because the place where she lived caught fire.32. a) because she was disappointed in the college.b) because she kept moving all the time and couldnt concentrate on studying.c) because her home was too

44、far away from school and it was inconvenient.d) because she was not interested in study at all.passage threequestions 33-35 are based on the passage you have just heard.33. a) italian people.b) german people.c) british people.d) french people.34. a) wash the dishes.b) have her own meal.c) make plans

45、 for other activities.d) serve some wine.35. a) oddb) crazyc) regulard) romanticsection cdirections: in this section, you will hear a passage 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

46、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 you 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 main points in your ow

47、n words. finally, when the passage is read for the third time, you should check what you have written.the romans built great “aqueducts” to carry fresh water from the mountains to the cities. many of these aqueducts are still standing today. the roman (36) _even set up a (37)_ health service. they b

48、uilt the first great public hospitals in europe, and they paid doctors to look after poor people.when the roman empire fell to pieces, these (38) _ methods of treatment (39) _ from most of europe, for more than a thousand years. people went back to the old ways. they lived in dirty conditions, which

49、 helped to cause diseases; and they asked god to cure the (40) _. they shut up (41) _ sick people in prisons. or they burnt them alive because they were supposed to have (42) _ powers. but the work of the greek and roman doctors was not lost.over a thousand years ago, the arabs moved into many of th

50、e mediterranean countries. they took big parts of the old (43)_ lands. (44) _ arab doctors themselves made many new discoveries.(45)_ slowly, european doctors discovered again the things that the greeks and romans had known so long ago. (46) _part reading comprehension(reading in depth)(25 minutes)

51、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 bank is identified by a letter

52、. please mark the corresponding letter for each item on answer sheet 2 with a single line through the center. you may not use any of the words in the bank more than once.questions 47 to 56 are based on the following passagea sunflower is a sunflower. a mobile phone is a mobile phone. but can you 47

53、the two to do something for your local 48 ?it may well be possible. when you have finished with your mobile phone you will be able to 49 it in the garden or a plant pot and wait for it to flower.50 , a biodegradable (生物可降解的)mobile phone was introduced by scientists. it is hoped that the new type of

54、phone will encourage 51 to recycle.scientists have come up with a new material over the last five years. it looks like any other 52 and can be hard or soft. and able to change shape. overtime it can also break down into the soil without giving out any toxic 53 . british researchers used the new mate

55、rial to develop a phone cover that contains a sunflower seed. when this new type of cover turns into waste, it 54 nitrates(硝酸盐). these feed the seed and help the flower grow.engineers have designed a small 55 window to hold the seed. they have made sure it only grows when the phone is thrown away.&q

56、uot;we've only put sunflower seeds into the covers so far. but we are working with plant 56 to find out which flowers would perform best. maybe we could put roses in next time," said one scientist. 注意：自此部分试题请在答题卡2上作答。a recently b consumers c chemicalsd environment e combine f transparent g

57、buy h companion i experts j forms k bury l paper m paper n plastic o usuallysection bdirections: 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 o