[外语类试卷]大学英语四级模拟试卷888及答案与解析.doc

1、大学英语四级模拟试卷 888及答案与解析 一、 Part I Writing (30 minutes) 1 For this part, you are required to write a composition on the topic College English Teaching in China according to the following outline (given in Chinese). Your composition should be no less than 120 words. Remember to write your composition on

2、the Answer Sheet 1 clearly and neatly. 1. 有人认为中国的大学英语教学很不成功。 2. 失败的原因是 3. 我的建议 College English Teaching in China 二、 Part II 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 attached t

3、o 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 information given in the passage; NG (for NOT GIVEN) if the information is not given in the passage. 1 Rocket Renaissance The Ear of Priv

4、ate Spaceflight Is About to Start Background Two years ago, people witnessed the first space travel by SpaceShip One. Three people were involved in this flight: Burt Rutan, who designed the craft, and Mike Melvill, who flew it-although they were ably assisted by Paul Allen, one of the founders of Mi

5、crosoft, who paid for it. Certainly, people have long been known that manned spaceflight was possible. What they showed was that it is not just a game for governments. Private individuals can play, too. People involved Now, lots of people want to join in, and most of them have just met up at the Int

6、ernational Space Development Conference in Los Angeles, to engage in that mixture of camaraderie and competition that characterises the beginnings of a new technology. And, as might be expected, they have two of the necessary ingredients of success: ideas and money. First, the money. So far, more th

7、an $1 billion is known to have been committed to building private spaceships and the infrastructure to support them. For example, Mr Rum s follow-up vehicle, SpaceShip Two, is expected to cost its backers, Virgin Galactic, $240m for a fleet of five. The spaceport in New Mexico from which these are i

8、ntended to fly will account for another $225m, although New Mexicos government is planning to raise this money itself. These are not small sums, of course. On the other hand, Virgin Galactic has already banked $14m of deposits towards the $200,000 fare from people who want to travel on SpaceShip Two

9、, even though it has yet to be built, let alone flown. All this suggests that spaceflight, if not exactly entering the age of the common man, is at least entering the age of the moderately prosperous enthusiast. For entrepreneurs, it is no longer necessary to have billions of dollars to get into spa

10、ce; millions will now do. And for those who merely wish to travel there, and have enough money in their bank account, reality is favourable. Get started As with aircraft a century ago, a lot of designs are competing with each other, and there is no certainty about which will succeed. The initial goa

11、l is to build a “suborbital“ vehicle. This will not have to develop the tremendous speed needed to go into orbit around the Earth. instead, it will travel briefly into space, offering a short thrilling ride out of the atmosphere, a few minutes of weightlessness, and a spectacular view of the planet

12、from about 100kin. Four important criteria are how you take off, what fuel you use, what your craft is made of, and how you come back. Most peoples vision of a rocket launch is straight up from the ground. But, of the five vehicles most likely to be developed, two will actually be launched from the

13、air. SpaceShip Two will be carded to high altitude by a purpose-built aircraft known as Eve before its rocket motor is ignited. And Explorer, a vehicle being designed by Space Adventures, will be launched from the top of a high-altitude Russian research plane called the M-55X, according to Eric Ande

14、rson, the firms president and chief executive. As Dennis Jenkins, a consultant engineer at NASA, Americas space agency, points out, this is similar to using a two-stage rocket to get into space, with the aircraft acting as the first stage. However, a plane offers several advantages over a throw-away

15、 booster rocket. First, it can be used again. Second, it uses oxygen from the air, rather than having to carry its own oxidant, which saves weight. Third, it is lifted by wings. That means the atmosphere is an advantage, rather than a hindrance. All this means that the spacecraft itself can be light

16、er and cheaper. Not everyone wants to run two vehicles, though. Jeff Greason, president of XCOR Aerospace, a firm based in Mojave, California, is developing a two-person, ground-launched suborbital rocketplane called Xerus. Launching from the ground, says Mr. Greason, is more difficult than air laun

17、ching, but he reckons that in this case it has significantly lower operating costs. Fuel choices The second important design choice is the type of fuel. Unlike a jet engine, a rocket carries its own oxidant (氧第剂 ). This is why it can operate in space. Sometimes that oxidant is oxygen itself, in liqu

18、id form. In that case the fuel, too, is usually liquid-either kerosene (煤油 ) or liquid hydrogen (氢 ) and the two liquids are stored in separate tanks until they meet in the rockets combustion chamber. Alternatively, both fuel and oxidant are solid, and are loaded pre-mixed, like the propellant of a

19、firework rocket. SpaceShip Two, though, follows the design of SpaceShip One and is powered by a mixture of the two. The combustion chamber of a mixture is partly filled with solid fuel but no oxidant. However, the fuel is coated round the inside of the chamber, leaving a hole through the middle into

20、 which a liquid or gaseous oxidant can be pumped, and out of which the exhaust emerges. In SpaceShip One, the fuel was rubber and the oxidant a liquefied gas called nitrous oxide (一氧化二氮 ). Proponents of mixture say they are safer than either pure solid or pure liquid rockets. George Whittinghill, Vi

21、rgin Galactics chief technologist, says that they are safer than solid rockets because the flow of oxidant can be controlled, and combustion halted, if there is a problem. Solid rockets, like the fireworks they resemble, cannot be stopped until they run out of fuel. On the other hand liquid-fuelled

22、engines, though they can be shut down, are complex and temperamental. As Mr. Whittinghill observes, “they have pumps, seals, valves and lines everywhere, and there is a lot that potentially could go wrong.“ All this rather irrates those working on liquid propulsion. Richard Pournelle, head of invest

23、or relations at XCOR Aerospace, says the comparison is unfair. Liquid propulsion is routine in rocketry while hybrids are still rare. Numbers alone, therefore, mean that liquid-fuelled rockets blow up more often. That, Mr. Pournelle argues, does not prove that they are inherently unsafe. Chuck Lauer

24、, vice- president of business development for Rocketplane, another firm going down the liquid-fuelled route, agrees and argues that kerosene is widely used as aviation fuel and nobody complains that it is unsafe. 2 It is only two years ago that people became aware of the fact that manned spaceflight

25、 was actually possible. （ A） Y （ B） N （ C） NG 3 Spaceflight is possible for individuals who want to fly in the space and who have the money. （ A） Y （ B） N （ C） NG 4 The initial goal of building an aircraft is to make the vehicle fly, and speed was not such a primary consideration. （ A） Y （ B） N （ C）

26、 NG 5 All of the five vehicles most likely to be developed will be launched from the air. （ A） Y （ B） N （ C） NG 6 Although it is possible to launch the spaceship both from ground and from the air, some people believe its more cost-effective to launch it from ground. （ A） Y （ B） N （ C） NG 7 A consult

27、ant engineer at NASA points out that using aircraft acting as the first Stage provides several advantages over a throw-away booster rocket. （ A） Y （ B） N （ C） NG 8 In the design considerations of a spaceship, fuel choice is as important as the method of launching. （ A） Y （ B） N （ C） NG 9 A rocket ca

28、rries its own oxidant, and its fuel is usually either kerosene or_. 10 Proponents of mixture say that they are_than either pure solid or pure liquid rockets. 11 Proponents of kerosene cite the example of_using it as fuel Section A Directions: In this section, you will hear 8 short conversations and

29、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 choices marked A, B, C and D, and deci

30、de which is the best answer. （ A） Bob will probably remain angry until the man apologizes. （ B） Bob might not be really angry with the man. （ C） Bob has also been mad at her recently. （ D） The man should ask Bob to apologize. （ A） It may not be warm enough. （ B） The woman can wear it all winter. （ C

31、） It will not fit if the woman loses weight. （ D） The woman may have trouble paying for it. （ A） The doctor is not in until late the next morning. （ B） If he wants the best doctor than he should try Dr. Noon. （ C） If he wants a suitable doctor he should wait until 12 oclock. （ D） The doctor who usua

32、lly handles these things is not in usually in the mornings. （ A） Hes not sure he wants to go to the party. （ B） He just returned from a visit to the Andersons. （ C） He may not be able to give the woman a ride. （ D） He will give the woman a ride if he was also invited to the party. （ A） He knows who

33、the wallet belongs to. （ B） He can call the owner from his house. （ C） Some member of his family lost the wallet. （ D） The woman should keep the wallet at his house. （ A） At a tailors. （ B） At a butchers. （ C） At a hairdressers. （ D） At a photographers. （ A） Business courses have become popular. （ B

34、） The school only offers business courses. （ C） The business school has a new program. （ D） The school has just started to offer business courses. （ A） Hes not a very good chess player. （ B） The woman should join the chess club. （ C） The woman needs a lot of time to play chess. （ D） Hes willing to t

35、each the woman how to play chess. （ A） Leisure sporting activities. （ B） Average age of athletes. （ C） Durability of sporting equipment. （ D） Publics impression of the company. （ A） Target the 18-to-26-year-old age group. （ B） Sell tennis rackets. （ C） Carry more athletic shoes. （ D） Make an appeali

36、ng slogan. （ A） Because they have more buying power. （ B） Because they enjoy sports more than young people. （ C） Because they become more health conscious. （ D） Because they are less energetic than young people. （ A） An experiment in Antarctica. （ B） The breaking off of part of the Larsen Ice Shelf.

37、 （ C） The formation of the Larsen Ice Shelf. （ D） An expedition in Antarctica. （ A） They could be a sign of global warming. （ B） They are disturbing Antarctic bird habitats. （ C） They have destroyed research facilities. （ D） They refute current scientific theories. （ A） No melting has been observed

38、in Antarctica. （ B） The past several winters have been unusually severe. （ C） Nothing unusual has happened in other parts of Antarctica. （ D） The ice shelf had remained intact for centuries despite the weather. （ A） Warmer water temperatures. （ B） Less aquatic life. （ C） A rise in sea level. （ D） Co

39、lder winds. Section B Directions: 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 an

40、d D. （ A） 19 thousand. （ B） 11 million. （ C） 222 million. （ D） 4 million. （ A） Carrying out reading activities. （ B） Comparing newspaper remarks. （ C） Finding information in a book. （ D） Answering written questions. （ A） Young Americans should read more for pleasure. （ B） There too many non-English

41、speaking immigrants. （ C） Reforms should be carried out in high schools. （ D） People should complete college study if possible. （ A） 135,000. （ B） 350,000. （ C） 515000 （ D） 531000 （ A） one. （ B） Two. （ C） Three. （ D） Four. （ A） To live for away from them. （ B） To choose their own lifestyles. （ C） To

42、 live in the same area as them. （ D） To marry a strange people. （ A） To continue the family profession: （ B） To find better jobs. （ C） To do whatever they can. （ D） To follow fathers steps. （ A） Young people are often educated in their own cities. （ B） Parents and children often have much in common.

43、 （ C） Elderly people are always respected for their wisdom. （ D） The young and the old have different opinions and abilities. Section C Directions: 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. Whe

44、n 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 you are required to fill in the missing information. For these blanks, you can either use the exact words you have just

45、 heard or write down the 34 Yesterday we discussed the problem of rising prices. In other words, or in the 【 B1】_ terms, it is regarded as inflation. We noted that, during the 【 B2】 _ of inflation, all prices and incomes do not rise at the same rate. Some incomes rise more slowly than the cost of li

46、ving, and a few do not rise at all. Other incomes, 【 B3】 _ , rise more 【 B4】 _ than the cost of living. We concluded that persons with fixed incomes, as for example, the 【 B5】 _ who depend upon pensions, a person with slow-rising incomes as, for example, an 【 B6】 _ with a salary agreed to in a long-

47、term 【 B7】 _ will be most seriously affected by inflation. Please 【 B8】 _ that while their dollar incomes stay the same, the cost of goods and services rises, and in effect, real income decreases; that is 【 B9】 _ . We also talked about the fact that 【 B10】 _ , since high prices would increase sales

48、and profits would likely rise faster then the cost of living. And now, before we begin todays lecture, 【 B11】 _ ? 35 【 B1】 36 【 B2】 37 【 B3】 38 【 B4】 39 【 B5】 40 【 B6】 41 【 B7】 42 【 B8】 43 【 B9】 44 【 B10】 45 【 B11】 Section A Directions: In this section, there is a passage with ten blanks. You are re

49、quired 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 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. 45 Although April did not bring us the【 S1】 _we all hoped for, and although the Cen