1、大学英语四级模拟试卷 733及答案与解析 一、 Part I Writing (30 minutes) 1 1询问关于展览内容等的信息 2开闭馆时间 3是否有折扣 (discount) 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 to the passage. For q
2、uestions 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 Naturalgas Vehicles Kermit the Frog once said, “Its no
3、t that easy being green.“ Although he wasnt referring to cars, his observation seems particularly appropriate for the auto industry today: Designing, developing and marketing “green“ cars has not been an easy task, which is why gasolinepowered vehicles still rule the road and fossil fuels still ac c
4、ount for almost 75 percent of the worlds energy consumption. As gasoline prices soar and concern over harmful emission mounts, how ever, cars that run on alternate fuel sources will become increasingly important. A naturalgas vehicle, or NGV, is the perfect example of such a carits fuelefficient, en
5、vironmentally friendly and offers a relatively low cost of ownership. Natural Gas Basics The word “gas“ is a confusing term because it is used to de scribe many different substances that are similar hut not exactly the same. For example, the “gas“ you put in your car is gasoline, one component of cr
6、ude oil, or petroleum. Petroleum is a dark, sticky liquid mixture of compounds formed underground by tile decay of ancient marine animals. Natural gas also cranes from the decay of ancient organisms, but it naturally takes a gaseous form instead of a liquid form. Natural gas commonly occurs in assoc
7、iation with crude oil. It is derived from both land plants and aquatic(水中的 ) organic matter and forms above or below oil deposits. It is often dissolved in crude oil at the high pressures existing in a reservoir. There are also reservoirs of natural gas, known as nonassociated gas, that contain only
8、 gas and no oil. Natural gas consists primarily of methane(甲烷 ) and other hydrocarbon gases. Hydrocarbons are organic compounds composed only of the elements carbon and hydrogen. The hydrocarbons in natural gas are called saturated hydrocarbons because they contain hydrogen and carbon bound together
9、 by single bonds. Like gasoline, natural gas is combustible, which means it can be used in a combustion engine like gasoline. But cars that could burn natural gas didnt appear on the scene until the 1930s. From Field to Ford We extract natural gas trapped in underground reservoirs by drilling wells
10、into the earth. A modem well, equipped with diamondstudded drill bits, can drill to depths approaching 25,000 feet. Throughout the 19th century, the use of natural gas remained localized because there was no way to transport large quantities of gas over long distances. In 1890, the invention of a le
11、akproof pipeline coupling made it possible to transport gas miles from the source, Improvements in pipeline technology continued over the next two decades constructed more than 10 major natural gas transmission systems in the United States, making natural gas a viable energy source for many applicat
12、ions. The oil shortages of the late 1960s and early 1970s brought renewed interest in natural gas as a fuel source, especially for automobiles. Today, owners of naturalgas vehicles can fill up their cars at one of 1,300 fueling stations located in the United States. Honda al so offers a personal nat
13、ural gas pump to people who purchase its naturalgaspowered Civic. The pump uses a homes existing natural gas lines and can be installed for $500 to $1500. Naturalgas Vehicle Design Naturalgas vehicles use the same basic principles as gasoline powered vehicles. In other words, the fuel (natural gas i
14、n this case) is mixed with air in the cylinder of a fourstroke engine and then ignited by a spark plug to move a piston up and down. Although there are some differences between natural gas and gasoline in terms of flammability and ignition temperatures, NGVs themselves operate on the same fundamenta
15、l concepts as gasolinepowered vehicles. Still, some modifications are required to make an NGV work efficiently. These changes are primarily in the fuel storage tank, the engine and the chassis. Advantages The biggest advantage of NGVs is that they reduce environ mentally harmful emissions. Naturalga
16、s vehicles can achieve up to a 93 percent reduction in carbon monoxide emissions, 33 percent reduction in emissions of various oxides of nitrogen and a 50 percent reduction in reactive hydrocarbons when compared to gasoline vehicles. NGVs also rate higher in particulate matter 10 (PM10) emissions. P
17、M10 particles transport and deposit toxic materials through the air. NGVs that operate in diesel applications can reduce PM10 e missions by a factor of 10. Naturalgas vehicles also offer these benefits: NGVs are safer. The fuel storage tanks on an NGV are thicker and stronger than gasoline or diesel
18、 (内燃机车 ) tanks. There has not been an NGV fueltank rupture in more than two years in the United States. Natural gas costs are lower than gasoline. On average, natural gas costs onethird less than gasoline at the pump. Natural gas is convenient and abundant. A weltestablished pipeline infrastructure
19、exists in the United States to deliver natural gas to almost every urban area and most suburban areas. There are more than 1,300 NGV fueling stations in the United States, and more are being added every day. Natural gas prices have exhibited significant stability compared to oil prices. Historically
20、, natural gas prices have exhibited significant price stability compared to the prices of petroleumbased fuels. This stability makes it easier to plan accurately for longterm costs. NGVs have lower maintenance costs. Because natural gas burns so cleanly, it results in less wear and tear on the engin
21、e and extends the time between tuneups and oil changes. Disadvantages One of the biggest complaints about NGVs is that they arent as roomy as gasoline cars. This is because NGVs have to give up precious cargo and trunk space to accommodate the fuel storage cylinders. Not only that, these cylinders c
22、an be expensive to design and builda contributing factor to the higher overall costs of a naturalgas vehicle compared to a gasolinepowered car. Another drawback is the limited driving range of NGVs, which is typically about half that of a gasolinepowered vehicle. For example, Hondas natural gas Civi
23、c, the Civic GX, can go up to 220 miles without refueling. A typical gasolinepowered Civic can go approximately 350 miles without refueling. If a dedicated NGV ran out of fuel on the road, it would have to be towed to the owners home or to a local natural gas refueling station, which might be harder
24、 to find than a “regular“ gas station. Finally, it should be noted that natural gas, like gasoline, is a fossil fuel and cannot be considered a renewable resource. While natural gas reserves in the United States are still considerable, they are not inexhaustible, some predict that there are enough n
25、atural gas re serves remaining to last another 67.1 years, assuming that the 2003 level of production continues. 2 This passage explains the basic idea of NGVs and examines the benefits and shortcomings of this technology. （ A） Y （ B） N （ C） NG 3 Natural gas is mainly made up of methane and other hy
26、drocarbon gasses. （ A） Y （ B） N （ C） NG 4 The basic principles applied to naturalgas vehicles are quite different from those applied to gasolinepowered vehicles. （ A） Y （ B） N （ C） NG 5 The biggest advantage provided by NGVs is that they help reduce car accidents to a great degree. （ A） Y （ B） N （ C
27、） NG 6 The average cost of natural gas is onethird less than that of gasoline at the pump. （ A） Y （ B） N （ C） NG 7 NGVs arent as roomy as gasoline cars because they have to give up cargo and trunk space to accommodate the fuel storage cylinders. （ A） Y （ B） N （ C） NG 8 The United States has larger u
28、se of NGVs than the other countries in Europe. （ A） Y （ B） N （ C） NG 9 Not until the _ were the cars that could burn natural gas invented. 10 Natural gas trapped in underground reservoirs is extracted by _. 11 People renewed their interest in natural gas as a fuel as a result of _ of the late 1960s
29、and early 1970s. Section A Directions: In this section, you will 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
30、will be a pause. During the pause, you must read the four choices marked A, B, C and D, and decide which is the best answer. （ A） He is careless about his appearance. （ B） He is ashamed of his present condition. （ C） He changes jobs frequently. （ D） He shaves every other day. （ A） Jane may be caught
31、 in a traffic jam. （ B） Jane should have started a little earlier. （ C） He knows what sort of person Jane is. （ D） He is irritated at having to wait for Jane. （ A） Training for the Mid-Atlantic Championships. （ B） Making preparations for a trans-Atlantic trip. （ C） Collecting information about baseb
32、all games. （ D） Analyzing their rivals on-field performance. （ A） He had a narrow escape in a car accident. （ B） He is hospitalized for a serious injury. （ C） He lost his mother two weeks ago. （ D） He has been having a hard time. （ A） The woman has known the speaker for a long time. （ B） The man had
33、 difficulty understanding the lecture. （ C） The man is making a fuss about nothing. （ D） The woman thinks highly of the speaker. （ A） He has difficulty mailing sense of logic. （ B） Statistics and logic are both challenging subjects. （ C） The woman should seek help from the tutoring service. （ D） Tut
34、oring services are very popular with students. （ A） Her overcoat is as stylish as Jills. （ B） Jill missed her class last week. （ C） Jill wore the overcoat last week. （ D） She is in the same class as the man. （ A） A computer game. （ B） An imaginary situation. （ C） An exciting experience. （ D） A vacat
35、ion by the sea. （ A） In the 15th century. （ B） In the 16th century. （ C） In the 17th century. （ D） In the 18th century. （ A） Because of the size and composition of their audience. （ B） Because of their diverse and lively programs. （ C） Because advertising is the most important source of income for t
36、hem. （ D） Because TV and radio stations are run by advertising companies. （ A） Newspapers and magazines. （ B） Direct mail. （ C） Transit advertising. （ D） Outdoor billboards and posters. （ A） How to produce pollution free bus. （ B） How to prevent our environment from being polluted. （ C） Whether to r
37、ide a passenger bus or a private car. （ D） How to reduce the pollutants produced by bus. （ A） She wants to cut back on her monthly expense. （ B） Her car is at the garage. （ C） She promises to meet the man on the passenger bus. （ D） She wants to contribute to a cleaner environment. （ A） It is a very
38、good insulator. （ B） It is a kind of lubricant. （ C） It is a new type of gasoline. （ D） It is a wax coat. （ A） The trouble of melting coniine oxide. （ B） The high price of it. （ C） The difficulty of spraying it on the engine parts. （ D） It being not environment-friendly. Section B Directions: In thi
39、s 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. （ A） Five. （ B） Three. （ C） Four. （
40、 D） Two. （ A） Because he lost one. （ B） Because he only bought three. （ C） Because he forgot to count the one he was riding. （ D） Because he didnt know how to count. （ A） She thought her husband was as foolish as a donkey. （ B） She really saw five donkeys. （ C） She was as foolish as her husband. （ D
41、） She found two other donkeys following them back. （ A） Clean air, much food and more exercise. （ B） Clean air, fresh food and less exercise. （ C） Clean air, fresh food and simple life. （ D） Hard work, much food and simple life. （ A） They live a happy and healthy life. （ B） They are famous for their
42、 diligence. （ C） They work hard outdoors in the fields and eat less food. （ D） There were few crimes, few divorces and not much illness in their society. （ A） The Secret of a Happy Life. （ B） The Secret of a Long Life. （ C） Hunzas of the Himalayas and Their Long Lives. （ D） The Importance of a Simpl
43、e Way of Life. （ A） They are supported by the local government. （ B） They are named after the cities where they live. （ C） Their players gathered from all over the country. （ D） They play professional basketball games in November only. （ A） During the summer months. （ B） During the spring months. （
44、C） During the winter months. （ D） During the autumn months. （ A） Basketball. （ B） Football. （ C） Baseball. （ D） Golf. （ A） Both require strength and specialized skills. （ B） Both require height and responsibility. （ C） Both require enthusiasm and hard work. （ D） Both require flexibility and good hea
45、lth. 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. When the passage is read for the second time, you are required to fill in the blanks numbered from 36 to 43 with the exact w
46、ords 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 36 As my train was not due to leave for another hour, I had plenty of time to spare. After buyin
47、g some【 B1】 _to read on the journey, I went to the luggage office to【 B2】 _the suitcase I had left there three days before. I took out my purse to find the receipt for my【 B3】 _. The receipt did not seem to be where I had left it. I took out all the things in the purse, but no matter how hard I【 B4】
48、 _, the receipt was nowhere to be found. When my【 B5】 _came, I explained the situation to the assistant. The man looked at me【 B6】 _and asked me to【 B7】 _the case. The assistant then gave me a form and told me to make a list of the【 B8】 _things in the case.【 B9】_. I tried to remember all the article
49、s I had hurriedly packed and wrote them down as they came to me. After I had done this, I went to look among the shelves. I found the case lying in a corner.【 B10】 _. Again I took out my purse and this time to pay. I pulled out a ten dollar note and the “lost“ receipt slipped out with it.【 B11】 _. He was nodding his head knowingly, as if to say that he had often seen this happen before too! 37 【 B1】 38 【 B2】 39 【 B3】 40 【 B4】 41 【 B5】 42 【 B6】 43 【 B7】 44 【 B8】 45 【 B9
