[外语类试卷]大学英语六级(听力)模拟试卷43及答案与解析.doc
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1、大学英语六级(听力)模拟试卷 43及答案与解析 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
2、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 0 Most people are aware that outdoor air pollution can damage their health, b
3、ut many do not know that indoor air pollution also can cause【 B1】 _ health effects. U.S. Environmental Protection Agency studies of human exposure to air pollutants【 B2】_ that indoor levels of pollutants may be 2 to 5 times, and【 B3】 _ more than 100 times, higher than outdoor levels. These levels of
4、 indoor air pollutants may be of particular【 B4】 _because most people spend about 90% of their time indoors. Many sources of indoor air pollution can be found in any home or office. Health effects from indoor air pollutants may be【 B5】 _ soon after exposure or, possibly, years later. Immediate effec
5、ts may show up after a single exposure or【 B6】 _ exposures. These include headaches, dizziness,【 B7】 _, and irritation(疼痛 )of the eyes, nose, and throat. Such immediate effects are usually short-term and treatable. Sometimes the treatment is simply【 B8】 _ the persons exposure to the source of the po
6、llution, if it can be identified.【 B9】 _. Age and preexisting medical conditions are two important influences. Certain immediate effects are similar to those from colds or other diseases, so it is often difficult to determine if the symptoms are a result of exposure to indoor air pollution.【 B10】 _.
7、 If the symptoms fade or go away when a person is away from home,【 B11】 _ 1 【 B1】 2 【 B2】 3 【 B3】 4 【 B4】 5 【 B5】 6 【 B6】 7 【 B7】 8 【 B8】 9 【 B9】 10 【 B10】 11 【 B11】 11 If the population of the Earth goes on increasing at its present rate, there will【 B1】 _ not be enough resources left to【 B2】 _ lif
8、e on the planet. By the middle of the 21st century, if present【 B3】 _continue, we will have used up all the oil that drives our cars, for example. Even if scientists develop new ways of【 B4】_the human race, the【 B5】 _ conditions on Earth will make it necessary for us to look for open space somewhere
9、 else. An American scientist, Professor Carl Sagan, believes that before the earths resources are completely【 B6】 _, it will be possible to change the【 B7】 _ of Venus and so create a new world almost as large as Earth itself. The difficulty is that Venus is much hotter than the Earth and there is on
10、ly a【 B8】 _amount of water there. 【 B9】 _. As soon as this has been done, the algae will be placed in small rockets.【 B10】 _. In a fairly short time, the algae will break down the carbon dioxide into oxygen and carbon. When the algae have done their work, the atmosphere will become cooler but before
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- 外语类 试卷 大学 英语六级 听力 模拟 43 答案 解析 DOC
