1. 根据材料内容，选择正确答案。

    The world itself is becoming much smaller by using modern traffic and modern communication equipment(通讯设备). Life today is much easier than it was hundreds of years ago, but it has brought new problems. One of the biggest is pollution. To pollute means to make things dirty. Pollution comes 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 were not so many people. When the land was used up or the river was dirty in one place, people moved to another place. They are slowly polluting the whole world.

    Air pollution is still the most serious. It's bad for all living things in the world but it is not the only one kind of pollution. Water pollution kills our fish and pollutes our drinking water. Noise pollution makes us angry more easily.

Many countries are making rules to fight against pollution. They stop people from burning coal in houses and factories in the city, and from putting dirty smoke into the air.

Pollution by SO₂ is now the most dangerous kind 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.

    The earth is our home. We must take care of it. That means keeping the land, water and air clean. And we must take care of the rise in population at the same time.

1. （1） Our world is becoming much smaller          .

   A . because the earth is being polluted day and night B . because of the industrial development C . because of modern traffic and communication equipment D . because of the rise in population
3. （2） Thousands of years ago, life was          it is today.

   A . much easier than B . much harder than C . as easy as D . the same as
5. （3） Pollution comes in many ways. We can even hear it. Here "it" means       .

   A . water pollution B . air pollution C . noise pollution D . the sound of the cars
7. （4） Air pollution is the most serious kind of pollution because       .

   A . it is the only one kind of pollution B . it makes our drinking water dirty C . it makes us angry more easily D . it's bad for all living things in the world
9. （5） According to the passage, which of the following is NOT true?

   A . The problem of pollution is not so serious because there are not so many people living on the earth. B . The pollution of the earth grows as fast a8 the world's population does. C . If people could go to work by bus or bike instead of car or motorbike it would be helpful in fighting against the problem of S0₂. D . Houses and factories should not burn coal so that we will have fresh air to breathe.