题目内容：

With the1.(develop) of industry, air pollution is getting more and more serious. In Beijing, many people suffer different kinds of illnesses because2.air pollution.

Air pollution is caused by the following3.: about half of the problem is caused by vehicles. There are more and more cars, buses on the roads, and they give off4.(poison) gases. 25% of air pollution is caused by factories. Another factor is the smokers. Smoking not only does harm to their health5.to others.6.these, about 10%of air pollution is caused by other reasons.

We should take some measures to fight7.pollution. New fuel can be used to take8.place of gas. We can plant more trees. If everybody realizes the9.(important) of environment and does something to stop pollution, the problem will10.(solve).