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Air Pollution refers to the addition of harmful substances to the atmosphere resulting in damage to the environment, human healt
Air Pollution refers to the addition of harmful substances to the atmosphere resulting in damage to the environment, human healt
admin
2010-04-12
43
问题
Air Pollution refers to the addition of harmful substances to the atmosphere resulting in damage to the environment, human health, and【S1】______of life. One of many forms of pollution, air pollution occurs inside homes, schools, and offices; in cities; across continents; and even【S2】______. Air pollution makes people sick—it causes breathing problems and【S3】______cancer—and it harms plants, animals, and the ecosystems (生态系统) in which they live. Some air pollutants return to earth in the form of acid rain and snow, which destroy【S4】______and buildings, damage crops and forests, and make lakes and streams【S5】______for fish and other plant and animal life.
Pollution is changing Earth’s atmosphere so that it lets in more harmful radiation from the Sun. At the same time, our polluted atmosphere is becoming a better insulator (绝缘体), which can【S6】______heat from escaping back into space and lead to a rise in global average temperatures. Scientists【S7】______that the temperature increase, referred to as global warming, will affect world food supply, alter sea level, make weather more【S8】______, and increase the spread of tropical disease.
Although the effects of future【S9】______change are unknown, some report that exaggerated weather conditions may【S10】______affect agriculture, for example, it may lead to severe drought and sharply decreasing agricultural yields in parts of Africa.
A) globally B) promotes C) predict D) unsuitable
E) science F) dramatically G) protect H) prevent
I) quality J) climate K) statues L) significant
M) powerful N) moderately O) extreme
【S2】
选项
答案
A
解析
本题有一定的难度。首先分析句子成分,前面出现了由inside和in构成的介词短语做地点状语,可见 and后也需要一个并列的状语,而可供选择的词中只有副词能做地点状语。其次,在三个副词中,globally是限定范围的,dramatically,moderately是限定程度的,而此处讨论的是地点,因此选择与地域范围有关的globally。
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0
大学英语四级
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