1、国家公共英语四级（综合）练习试卷 12及答案与解析 PART A Directions: For Questions 1-5, you will hear a conversation. While you listen, fill out the table with the information you have heard. Some of the information has been given to you in the table. Write only 1 word in each numbered box. You will hear the recording twic
2、e. You now have 25 seconds to read the table below. 1 Noise is America s most widespread _ . 2 Noise constitutes a real and present danger to _ . 3 Noise can produce serious _ stress. 4 Legislators have made _ the basis of many noise reducing programs. 5 The more subtle and more serious _ have been
3、given much less attention. PART B Directions: For Questions 6-10, you will hear a passage. Use not more than 3 words for each answer. You will hear the recording twice. You now have 25 seconds to read the sentences and the questions below. 6 What does “runoff“ mean? 7 What characteristics can be of
4、a flood? 8 What is the passage mainly about? 9 How much of all precipitation is runoff? 10 What forms flood plain? PART C Directions: You will hear three dialogues or monologues. Before listening to each one, you will have 5 seconds to read each of the questions which accompany it. While listening,
5、answer each question by choosing A, B, C or D. After listening, you will have 10 seconds to check your answer to each question. You will hear each piece ONLY ONCE. 11 What do we learn about the use of solar energy in the USA? （ A） It is very well established. （ B） It is relatively new. （ C） It is fo
6、und in one million homes. （ D） It is being rapidly expanded. 12 Which is not true about solar heat collector panels? （ A） They look like sandwiches. （ B） They can heat but not cool homes. （ C） They cost about 300 each. （ D） They are placed on rooftops. 13 How many solar heat panels do three or four
7、bedroom homes usually need? （ A） Three or four. （ B） Five or six. （ C） Seven or eight. （ D） Twelve or more. 14 What is the main topic of the lecture? （ A） Bicycles and cars. （ B） Building codes. （ C） Energy conservation. （ D） New housing construction. 15 Why is insulation required in new houses? （ A
8、） To limit discussion on heating bills. （ B） To prevent heat loss. （ C） To determine temperature in homes. （ D） To convert homes to electric heat. 16 What is the purpose of building new houses facing north or south? （ A） To avoid direct sunlight. （ B） To limit space used. （ C） To keep out the cold.
9、（ D） To conform to other houses. 17 What s the talk mainly about? （ A） Green house effect. （ B） Garbage treatment. （ C） Environment protection. （ D） Over-packaging problem. 18 Whats the problem with paper napkins and plastic food wraps? （ A） They can t be recycled though they help people save time o
10、n housework. （ B） They become trash and therefore are harmful to the environment. （ C） They add cost to the product and thus make it more expensive. （ D） Sometimes they are not strong enough to hold the purchase. 19 What does the speaker suggest people should do when they go shopping? （ A） Avoid ove
11、r-packaging products. （ B） Use cloth napkins and cloth towels. （ C） Not buy any products with plastic wraps. （ D） Take their own bags to hold things in. 20 What can we do to avoid the waste of paper? （ A） Learn to make notepads from unused sides of paper. （ B） Cut down on paper consumption. （ C） Tea
12、ch children not to litter. （ D） Stop using paper towels. 国家公共英语四级（综合）练习试卷 12答案与解析 PART A Directions: For Questions 1-5, you will hear a conversation. While you listen, fill out the table with the information you have heard. Some of the information has been given to you in the table. Write only 1 wor
13、d in each numbered box. You will hear the recording twice. You now have 25 seconds to read the table below. 1 【听力原文】 Noise or unwanted sound is America s most widespread nuisance. But noise is more than just a nuisance. It constitutes a real and present danger to people s health. Day and night, at h
14、ome, at work, and at play, noise can produce serious physical and psychological stress. No one is unaffected by this stress. Though we seem to adjust to noise by ignoring it, the ear, in fact, never closes and the body still responds-sometimes with extreme tension, as to a strange sound in the night
15、. The annoyance we feel when faced with noise is the most common outward symptom of the stress building up inside us. Indeed, because irritability is so apparent, legislators have made public annoyance the basis of many noise reducing programs. The more subtle and more serious health hazards associa
16、ted with stress caused by noise traditionally have been given much less attention. 1 【正确答案】 nuisance 【知识模块】 Environment 2 【正确答案】 people s health 【知识模块】 Environment 3 【正确答案】 physical and psychological 【知识模块】 Environment 4 【正确答案】 public annoyance 【知识模块】 Environment 5 【正确答案】 health hazards 【知识模块】 Envir
17、onment PART B Directions: For Questions 6-10, you will hear a passage. Use not more than 3 words for each answer. You will hear the recording twice. You now have 25 seconds to read the sentences and the questions below. 6 【听力原文】 When it rains or snows, some of the water is retained by the soil, some
18、 is absorbed by vegetation, some evaporates, and the remainder, which reaches stream channels, is called runoff. Floods occur when soil and vegetation can not absorb all the water; water then runs off the land in quantities and can t be carried in stream channels or retained in natural ponds and con
19、structed reservoirs. About 30% of all precipitation is runoff, and this amount is increased by melting snow masses. Periodic floods occur naturally on many rivers, forming an area known as the flood plain. These river floods often result from the heavy rain, sometimes combined with melting snow, whi
20、ch causes the rivers to overflow their banks; a flood that rises and falls rapidly with little or no advance warning is called a flash flood. Flash floods usually result from intense rainfall over a relatively small area. Coastal areas are occasionally flooded by unusually high tides induced by seve
21、re winds over ocean surfaces, or by tidal waves caused by undersea earthquakes. 6 【正确答案】 Water going to stream channels 【知识模块】 Environment 7 【正确答案】 It happens suddenly and unexpectedly 【知识模块】 Environment 8 【正确答案】 Floods 【知识模块】 Environment 9 【正确答案】 About 30% 【知识模块】 Environment 10 【正确答案】 Periodic floo
22、ds 【知识模块】 Environment PART C Directions: You will hear three dialogues or monologues. Before listening to each one, you will have 5 seconds to read each of the questions which accompany it. While listening, answer each question by choosing A, B, C or D. After listening, you will have 10 seconds to c
23、heck your answer to each question. You will hear each piece ONLY ONCE. 11 【听力原文】 Little by little, Americans are turning to solar power, tapping the strength of the sun for energy. Solar energy is only in its infancy, however, sunlight has already been used for heating or cooling homes and office bu
24、ildings in the sunny south. Experts say all signs point to the birth of the solar energy industry. Right now, an increasing number of companies are selling solar collector panels to heat and cool homes or to heat water. The glass and metal panels cost from 100 to more than 500 each, and the three or
25、 four bedroom homes usually require a dozen or more. They look like sandwiches, or very narrow flower boxes, 3 to 6 feet in width, 8 to 10 feet long, and 4 to 8 inches thick. They are usually placed in rooftops. Nobody knows how many have been sold, and in addition, many people have built their own
26、units. It has been estimated that solar power equipment will be a 1.3 billion industry by 1995, and more a million homes will use sunlight for heat, air conditioning or to generate electricity, both in the cities and in countryside. 11 【正确答案】 D 【知识模块】 Environment 12 【正确答案】 B 【知识模块】 Environment 13 【正
27、确答案】 D 【知识模块】 Environment 14 【听力原文】 For the past few weeks we have been discussing national energy conservation alternatives for the future. Today I am going to talk about what one community is presently doing to conserve energy. The people of Davis California have succeeded in cutting their energy
28、consumption by one third since 1973. The first energy saving action that was taken in the early 70 s was the legislation of strict building codes; all new houses in Davis must have the proper insulation so that heat will not escape unnecessarily in the winter. New houses also face north or south so
29、that they will not be overheated by the sun in summer. The laws have had a definite effect. Since 1976, there has been a 50% saving in the amount of natural gas and electricity used in heating and air conditioning. There are other energy saving features about Davis. Buses, partially supported by the
30、 city, transplant university students throughout the area. There are twenty-four miles of bicycle paths and today there are twice as many bicycles as cars in the city. By reducing the available parking space the city council has succeeded in reducing the number of cars in the city every day. Another
31、 benefit of the reduced parking space is the greater number of small cars. People are saving gas because they are choosing not to drive or because they are driving fuel economic cars. Davis California has become an energy saving model for other cities. Time is up for today. Next week we will return
32、to our regular topic of national energy alternatives. 14 【正确答案】 C 【知识模块】 Environment 15 【正确答案】 B 【知识模块】 Environment 16 【正确答案】 A 【知识模块】 Environment 17 【听力原文】 Good evening, ladies and gentlemen, and welcome. I m sure we have all heard the expression, “Think Green“. Tonight we are going to talk about w
33、ays that we can “Act Green in our everyday lives. The best place to start, of course, is the home. Every day, people all over the world are hurting the environment without even knowing it. For example, busy families buy paper napkins and plastic food wrap at the supermarket. Tins helps them save tim
34、e on housework, but after these things have been used, what happens to them? They go in the trash. In many places, especially in the North America, big cities are running out of places to throw their trash, what can we do about it? How can we cut down on garbage? Well, we can start using cloth napki
35、ns and cloth towels instead of paper towels. When we go grocery shopping, we can choose products that are not “over-packaged“. For example, last week I bought a package of cookies. The cookies were in a bag, there was a plastic tray inside the bag, and then each cookie was in its own little package
36、on the tray in the bag! That s over-packaging! We should also take our own bags to the grocery store to carry things home in. Cleaning products are another danger. Dangerous cleaning products enter our water supply every day. Of course, everyone wants a clean house, so what s the answer? For one thi
37、ng, we could make our own cleaning solution from baking soda, lemon, and vinegar. Now, what about in the community? At work and school, we use one very valuable item every day. Paper, of course, we need paper to do our work, but how much do we waste? Does your school or office recycle paper, learn t
38、o make notepads from unused sides of old pieces of paper. Perhaps the most important thing we do is to ask our schools to teach recycling to young children. We should teach them to be careful; we should teach them not to litter. We should also teach them by being good role models and recycling as much as we can every day! Finally, plant a tree. Better yet, plant two trees. 17 【正确答案】 C 【知识模块】 Environment 18 【正确答案】 B 【知识模块】 Environment 19 【正确答案】 D 【知识模块】 Environment 20 【正确答案】 A 【知识模块】 Environment
