Saving the earth新都四中网络中心搜集整理

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Earth

Lake Baikal

DunhuangGebi

India

Mediterranean Sea

Germany

USAAlska

China

Russia

Air

Water

4.Air pollution and water pollution are the two causes of problem that many parts of the world have become desert.

3.Good soil is gradually lost these days as trees are being cut down

2.Land may become poor if farmers do not limit their cattle.

1. Many parts of the world with large population and plenty of crops have become desert.

Ture or False

T

T

T

F

5. Chemicals in the smoke from power stations can travel hundreds of miles before falling down to the rain.

6. After a bad accident at a nuclear power station, 50%of the trees in Germany were damaged.

7. The writer uses the examples of the accidents in both India and Russia to explain how water is polluted.

8. Once oceans are polluted, they are not able to clean themselves.

F

F

F

F

The main idea of each passage

Earth:

Air:

The area of desert is growing and good soil is gradually lost.

Chemicals in the smoke cause a lot of damage and serious accidents took place from time to time.

Water : Water pollution is caused by man’s waste. The waters of this great lake have been dirtied and 4800 square km of ocean were polluted by oil.

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