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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
115
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
【S5】
选项
答案
D
解析
此处从语法结构上不易推断,而从意义上理解就会很容易选择。这里依然讲的是酸雨和雪所造成的危害,那么意思肯定是消极的。从逻辑上,我们可以推断出酸雨和雪会使湖泊河流不适合鱼类和其他动植物生存。因此,选择unsuitable。
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0
大学英语四级
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