大学英语四级考试模拟试卷(三).doc

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1、大学英语四级考试模拟试卷(三)Part Writing (30 minutes)Directions: For this part, you are allowed 30 minutes to write a composition on the title Different Social Customs Between Americans and Chinese. You should write at least 120 words following the outline given below in Chinese:1社会习惯的不同普遍存在；2美国和中国习惯的不同之处；3我们的做法

2、。Part 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 answer from the four choices marked A), B), C) and D). For questions 8- 1

3、0, complete the sentences with the information given in the passage.Sharks Sharks are amazing fish that have been around since long before the dinosaurs existed. They live in waters all over the world, in every ocean, and even in some rivers and lakes.Sharks and long fish Unlike bony fish, sharks ha

4、ve no bones; their skeleton is made of cartilage (软骨), which is a tough, fibrous (纤维性质的) substance, not nearly as hard as bone. Cartilage, a strong fibrous substance, is softer than bone; our nose and ears are made of cartilage. Sharks also have no swim bladder (鳔) (unlike bony fish).Size There are

5、many different species of sharks that range in size from the size of a persons hand to bigger than a bus. The Whale shark is the largest fish in the world; the basking .shark (姥鲨) is the second largest fish. Fully-grown sharks range in size from 7 inches long, up to 50 feet long. Most sharks are int

6、ermediate in size, and are about the same size as people, 5- 7 feet long. Half of the shark species are less than 39 inches long.Variety of sharks There are about 368 different species of sharks, which are divided into 30 families. These different families of sharks are very different in the way the

7、y look, live, and eat. They have different shapes, sizes, color, fins, teeth, habitat, diet, personality, method of reproduction, and other attributes. Some types of shark are very rare and some are quite common. The spiny dogfish shark (白斑角鲨) is the most common shark.Body shapes Sharks have a varie

8、ty of body shapes. Most sharks have streamlined (流线型的)bodies that glide easily through the water. Some bottom-dwelling sharks have flattened bodies that allow them to hide in the sand of the ocean bed. Some sharks have a long body shape. The goblin shark has a large, pointed bulge (凸出) on its head,

9、and its purpose is unknown. Teeth The teeth of sharks are also striking. Sharks may have up to 3,000 teeth at one time. Most sharks do not chew their food, but swallow it down whole or in large pieces. The teeth are arranged in rows; when one tooth is damaged or lost, it is replaced by another. Most

10、 sharks have about 5 rows of teeth at any time. The front set is the largest and does most of the work.Diet Sharks vary greatly in their diets, but they are all carnivores (食肉动物). Some eat fish, other sharks, and marine mammals; some eat shellfish from the ocean floor; and others eat tiny bits of pl

11、ankton (浮游生物) and small animals from the water as they swim with open mouths. They eat huge amounts of these tiny animals and plants.Shark attacks When some sharks turn aggressive prior to an attack, they arch their back and throw back their head. They also move their tail more acutely (probably in

12、preparation for a chase). Sharks do not normally attack people, and only about 25 species of sharks are known to attack people. Sharks attack fewer than 100 people each year. Many more people are killed by bees or lightning. The sharks that are the most dangerous to people are the great white shark,

13、 the tiger shark, and the bull shark. The bull shark is the most frequent attacker of people as it swims in very shallow waters where people swim and is a very plentiful shark. Some of the other sharks that are known to have attacked people include the gray shark, blue shark, hammerhead shark, mako

14、shark, nurse shark, lemon shark, and blacktip reef shark. Some people believe that sharks mistake people (especially people swimming on surf boards) for seals and sea lions, some of their favorite foods. Occasionally, a group of sharks will attack a food source (for example, a school of fish) in a c

15、razy fashion. They will wildly attack the food and anything in the area, even each other, sometimes wounding or eating fellow sharks.Habitat Sharks live in oceans and seas all over the world, and even in some rivers and lakes, especially in warmer waters. Some sharks live near the surface, some live

16、 deep in the water, and others live on or near the ocean floor. Pelagic (远洋的) sharks (living in the open ocean) include the great white shark, the basking shark, etc. Benthic sharks (living at the ocean floor) like the zebra horn shark usually have flattened, camouflaged (伪装的) bodies that let them h

17、ide in the sea bed. Some sharks even venture many miles up into the fresh water of rivers like the Mississippi in the USA and the Amazon in Brazil. The bull shark sometimes ventures into fresh water.Migration of sharks Some sharks live in relatively warm waters (hammerheads, bull sharks, and tiger s

18、harks). Other sharks, such as the thresher, mako, basking and blue shark, live in temperate water (which is neither hot nor cold). Others, including the dogfish, Greenland, and goblin, live in cool waters. Some sharks stay in the same region in their entire lives while others travel across oceans. T

19、here are three different types of sharks when it comes to migratory (迁移的) patterns: Local sharks, coastal pelagic sharks, and highly pelagic sharks. Local sharks do not migrate, and range only about a hundred miles from their habitat, coastal pelagic sharks can migrate over 1,000 miles (1,600 km), w

20、hile highly pelagic sharks migrate across oceans.Evolution of sharks Sharks have existed for over 350 million years. They evolved over 100 million years before the dinosaurs did. This was long before people evolved. Most fossil evidence of early sharks is from fossilized teeth and a few skin impress

21、ions. Cladodonts, primitive sharks, had double-pointed teeth, were up to 3 feet long fish-eaters and lived about 400 million years ago. Megalodon was an ancient, meat-eating shark, living between 25 -1.6 million years ago; it is extinct. It was over 40 feet long, but this is only an estimate from fo

22、ssil teeth that have been found. Its teeth resemble those of the great white shark but are almost 3 times larger; these teeth are each the size of a persons hand!1. What is the main idea of the passage? A) The passage tells us why sharks are dangerous to people. B) The passage tells us the habitat a

23、nd migration of sharks. C) The passage introduces the basic information about sharks. D) The passage introduces the evolutional process of sharks.2. Different from most fishes, sharks body is not upheld by _. A) fiber C) bones B) cartilage D) skeleton3. Which of the following description about the s

24、ize of sharks is TRUE? A) Sharks are big animals, most of them are about 50 feet long. B) Sharks are the largest fish, most of them are bigger than buses. C) Most sharks are much longer than human beings. D) Most sharks are about the same size as human beings.4. Which of the following sharks is the

25、mast common shark? A) The whale shark. C) The basking shark. B) The spiny dogfish shark. D) The great white shark.5. Sharks eat their food by _? A) sucking C) grinding B) chewing D) swallowing6. When sharks quickly move their tail, they probably become _. A) friendly C) interested B) indifferent D)

26、offensive7. Why may the bull sharks attack people frequently? A) Because they swims in shallow waters where people swim. B) Because they may wildly attack anything in the sea. C) Because human being is their favorite food. D) Because they are very aggressive sharks.8. The zebra horn sharks sometimes

27、 may hide their bodies in _.9. The sharks that move about in a fixed area about a hundred miles are called _.10. The earliest dinosaurs lived in the time that was about _ years from today according to the passage.Part Listening Comprehension (35 minutes)Section ADirections: In this section, you will

28、 hear 8 short conversations and 2 long conversations. At the end of each conversation, one or more questions will be 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 choice

29、s marked A), B), C) and D), and decide which is the best answer. Then mark the corresponding letter on Answer Sheet 2 with a single line through the centre.Questions 11 to 18 are based on the conversation you have just heard.11. A) What information the person left. C) What Margaret said about the pe

30、rson. B) Where Margaret went. D) When the message was left.12. A) She has probably some free time this week. C) Shes probably back at home. B) She is probably not coming on Sunday. D) She has probably tried to call.13. A) Buy a new television before Friday. C) Fix the womans television. B) Check if

31、the womans television is new. D) Order a new television for the woman.14. A) The movie was more interesting than he thought. B) He had enjoyed the movie with the woman. C) The woman knew nothing about the reviews. D) He agrees with the woman about the movie.15. A) He almost slept through the movie.

32、B) He wishes he could go to the movie. C) He wants to rewrite his notes. D) Hes planning to go to the movie after exam.16. A) He should do the experiment later. B) He must be extremely careful.C) She is willing to do the experiment for him. D) Shes sure he is not right.17. A) The man should buy a me

33、al ticket every month. B) Individuals pay differently for the same meal. C) Buying the meal ticket wont save the man money. D) The price of a meal varies according to the date.18. A) She finished her model a week ago. C) She will help him build his model. B) She completed her model quickly. D) She t

34、hinks she can find him a model.Questions 19 to 21 are based on the conversation you have just heard.19. A) He wasnt present at the lecture. C) He didnt listen to the lecture attentively. B) He didnt appreciate the lecture. D) He disliked some part of the lecture.20. A) The Arctic land. C) Active vol

35、cano. B) Iceberg. D) Ice age.21. A) The ice in the Antarctic will never melt.B) The disasters caused by icebergs are all over the world.C) The Antarctic is hot with volcanoes.D) Volcano can protect ice sheet from melting.Questions 22 to 25 are based on the conversation you have just heard.22. A) She

36、 is Professor Jamisons nephew. C) She used to do the job herself. B) She is working for Professor Jamison. D) She just finished interview for the job.23. A) It can be even higher. C) Its the same as that of post office. B) Its very good. D) It varies with the persons experience.24. A) He wonders if

37、he has enough time for the job. B) He is afraid he is not experienced enough. C) He is afraid that the job may be boring. D) He thinks Professor Jamison has chosen one.25. A) Correcting examination papers. C) Teaching an economics course. B) Researching in the library. D) Grading homework sets.Secti

38、on 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 once. After you hear a question, you must choose the best answer from the four choices marked A), B), C) and D). Then mark

39、 the corresponding letter on Answer Sheet 2 with a single line through the center.Passage OneQuestions 26 to 28 are based on the passage you have just heard.26. A) Because the LIN wanted to increase the water use in the world. B) Because the UN wanted to attract peoples attention to the water proble

40、ms. C) Because the UN estimated that fresh water would be used up by 2025. D) Because the UN estimated that the environment might be damaged within a few years.27. A) More than 70 million. C) More than 2000 million. B) More than 1000 million. D) More than 6000 million.28. A) To reduce half of the nu

41、mber of people who lack safe drinking water by 2015. B) To maintain sustainable development of South Africa till 2015. C) To release a report on water development and water problems in the world. D) To arouse political desire to meet future water demands.Passage TwoQuestions 29 to 31 are based on th

42、e passage you have just heard.29. A) To improve the intelligence level of the nation. B) To improve the English language teaching in American schools. C) To promote the foreign language teaching in American schools. D) To promote the cooperation of the department of Education and Defense.30. A) Beca

43、use children may use less money in foreign language learning. B) Because children may serve in the government in tile future. C) Because children may speak a foreign language better than adults. D) Because children may learn a foreign language more easily than adults.31. A) Sending more American stu

44、dents to other countries to study their languages. B) Hiring more foreign language teaching assistants in American schools. C) Starting earlier foreign language teaching in American elementary schools. D) Investing more money in studying the teaching methods of foreign languages.Passage ThreeQuestio

45、ns 32 to 35 are based on the passage you have just heard.32. A) American economy. C) American industry. B) American agriculture. D) American GDP.33. A) 0.7 percent. C) 20 percent. B) 0.9 percent. D) 80 percent.34. A) Because of the application of new technology and methods. B) Because of the decrease of government payments. C) Because of the increase in agricultural export. D) Because of Canadas dependence on agricultural import.35. A) Canada, Japan and Mexico. B) Canada, Mexico and the European Union. C) Japan, the European