题目内容：

The world itself is becoming much smaller by using modern traffic and TV, telephone and so on. Life today is much easier than it was hundreds of years ago, but it has also brought new problems. One of the biggest is pollution. Pollution comes in many ways. We see it, smell it, drink it and even hear it.

The more people, the more pollution. Many years ago, the problem was not so serious because there were not so many people. Man is now slowly polluting the whole world..

Air pollution is still the most serious. It’s bad to all living things in the world. Water pollution kills our fish and pollutes our drinking water. Noise pollution makes us become angry more easily.

Many countries are making rules to fight pollution. They stop people from burning coal in houses and factories in the city.

The pollution of SO2 is now the most dangerous problem of air pollution. It is caused by heavy traffic. It is sure that if there are fewer people driving, there will be less air pollution.

1.Our world is becoming much smaller _______.

A．because the earth is being polluted day and night

B．thanks to science development

C．because of the rise in population

D．because the earth is blown away by the wind every year

2.Thousands of years ago, life was _______it is today.

A．much easier than   B．as easy as          C．as hard as         D．much harder than

3.Pollution comes in many ways. We can even hear it. Here “it” means______.

A．Water pollution     B．air pollution        C．noise pollution     D．rubbish

4.Air pollution is the most serious kind of pollution because ________.

A．it’s bad to all living things in the world      B．it makes much noise

C．it has made our rivers and lakes dirty         D．it makes us become angry more easily

5.Which of the following is NOT TRUE?

A．Many countries are making rules to fight pollution.

B．The pollution of the earth grows as fast as the world’s population does.

C．From now on, maybe people should try to go to work by bus or bike instead of car ormotorbike. It is helpful to fight against the problem of SO2.

D．The problem of pollution is not so serious because there are so many people