阅读下面短文，根据上下文填入适当的词语，或使用括号中的词语的适当形式填空，并将答案填写在答题卡上标号为31-40的相应位置。 With the 小题1:_____________ (develop) of industry, air pollution is getting more 小题2:_________ more serious. In Beijing, many people suffer different kinds of illnesses because 小题3:________ air pollution. Air pollution is caused by the following 小题4:________[ reason]: about half 小题5:________ the problem is caused by vehicles. There are more and more cars, buses on the roads, and they give off poisonous gases. 25% of air pollution is caused by factories. Another factor is the smokers. 小题6:_________[Smoke] not only does harm to their health but also to others. Besides these, about 10%of air pollution is caused by other reasons. We should take some measures to fight 小题7:__________ pollution. New fuel[燃料] can 小题8:________[use] to replace[代替] gas. We can plant more trees. 小题9:________ everybody realizes the importance of environment and does something to stop pollution, 小题10:________ problem will be solved. |