從方框中所給的選項(xiàng)中選出能填入空白處的最佳選項(xiàng)補(bǔ)全短文，其中有一項(xiàng)是多余選項(xiàng)。

A. But that’s not the thing we should think of.

B. But now, it is a serious problem.

C. When people drink the water from such rivers, they become ill.

D. This is mainly because people throw rubbish here and there.

E. We should always remember the bad effects of pollution on us.

F. This is mainly because of the poisonous smoke coming from factories, especially chemical ones.

When we read newspapers, we can often see the word “pollution”. This word was not known to the people hundreds of years ago. 1. It means the poisoning (毒害) of the air, seas, rivers and lands, which would do harm to our health.

There are many factories that bring pollution to us. We cannot have fresh air in the morning. 2. In rivers, seas and oceans, there are industrial wastes. Some factories just throw their wastes into rivers or let them flow into seas. 3. Besides, there is rubbish from ships and when sometimes an accident happens in an ocean, oil flows out from tankers (油輪).

On land, the accumulation (累積) of rubbish in streets may dirty the city and do great harm to our health. 4.

If we do not fight against pollution, surely one day all of us will be killed. Some people like to put the blame on the industrial revolutions (工業(yè)革命). 5. The greatest task for us now is to solve the pollution problem with the help of modern science and technology.

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