For the part, you are allowed 20 minutes to write a composition of about 80 words according to the following topic. 空气污染（Air Pollution）
{解题指导}
（1）讲述环境污染危害着人类，空气污染尤为严重。
（2）讲空气污染的形成及讲造成的后果。
（3）表明自己对空气污染治理的态度。
Air Pollution
Our environment is becoming so bad that it begins to endanger our habitation. Among various pollution, air pollution is significantly severe.
Automobile exhaust contributes most to air pollution. It is of great harm to ozonosphere, which protects the earth from ultraviolet rays. Scientists have found that there are huge holes in the atmosphere above the North and South Poles. As a result, the temperature will be continuously on the rise, gradually the gigantic resources of ice will melt in the North and South Poles, and the eatrth will eventually face its doom as a result of floods overwhelming the globe. Besides, waste air emitted by industries ruins vegetation, and acid rain resulting from waste air kills marine life and destroys the fertility of soil.
There is a long way to go in solving this touchy problem. Yet we have to be resolved to tackle it. I wish it is not a dream that in the future when we look up, we can see clean blue sky with no hint of grey pollution.
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