题目内容
阅读下面短文,用括号内所给动词的适当形式填空 (必要时可加情态动词或助动词)。
The world itself is becoming much smaller by using modern traffic and modern communicate means(通讯设备). Life today is much easier than it (1)_________(be) hundreds of years ago, but it (2)___________(bring) new problems. One of the biggest is pollution. Pollution (3)_____________(come) in many ways. We see it, smell it, drink it and even hear it.
Man has been polluting the earth. The more people, the more pollution. Many years ago, the problem was not so serious because there weren’t so many people. When the land was used up or the river was dirty in a place, man now slowly (4)______________(pollute) the whole world.
Air pollution is still the most serious. It’s bad for all (5)____________(live) things in the world, but it is not only one kind of pollution. Water pollution kills our fish and pollutes our drinking water. Noise pollution makes us (6)____________(become) angry more easily.
The pollution of SO2 is now the most dangerous problem of air pollution. It (7)___________(cause) by heavy traffic. It is sure that if there are fewer people driving, there (8)____________ (be) less air pollution. The earth is our home. We (9)___________(take) care of it. Many countries are making rules (10)_____________(fight) pollution. That means keeping the land, water and air clean.
1. was 2. has brought 3. comes 4. is polluting 5. living
6. become 7. is caused 8. will be 9. must/should take 10. to fight