题目内容：

With the development of science and industry, the world has changed a lot. The world is becoming much smaller by using modem traffic and modem communication means. Life today is much easier than hundreds of years ago, but it has had many problems. 1. We can see it, smell it, drink it and even hear it.

2. With the increase in population, man is now slowly polluting the world. The more people, the more pollution.

3. For example, air pollution is the most serious. It's harmful to all living things in the world. Pollution from SO2 is now the most dangerous air pollution. 4. We're sure that the fewer cars on the mad, the less air pollution in the air. Water pollution kills our fish and pollutes our drinking water. Noise pollution makes us angry more easily and even causes hearing loss. 5.

The earth is our home. We must take good care of it. That means we ought to keep the land, water and air clean and save natural resources. Then our world will become better and better.

根据材料内容,从方框中选出恰当的句子填入文中空缺处,使文章意思连贯,内容完整,并将其标号填写在下面题号后的横线上。

 

A．SO2 is mainly from heavy traffic.

B．One of the main problems is pollution.

C．Light pollution is bad for our eyes and it also wastes energy.

D．Years ago, the problem was not serious because there were not so many people.

E．There are many kinds of pollution.

A．SO2 is mainly from heavy traffic.

B．One of the main problems is pollution.

C．Light pollution is bad for our eyes and it also wastes energy.

D．Years ago, the problem was not serious because there were not so many people.

E．There are many kinds of pollution.