Saving the earth

1. Saving the earth Lesson 34 Unit 9 Earth, Air and Water 制作人：矫灵灵

3. USA Alska Lake Baikal Russia Germany Dunhuang Gebi China Mediterranean Sea India

4. EARTH

7. AIR

10. WATER

13. Many parts of the world with large population and plenty of crops have become desert. • 2. Land may become poor if farmers do not limit their cattle. • 3. Good soil is gradually lost these days as trees are being cut down. • 4. Air pollution and water pollution are the two causes of problem that many parts of the world have become desert. • 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.

14. Many parts of the world with large population and plenty of crops have become desert.(T) • 2. Land may become poor if farmers do not limit their cattle.(T) • 3. Good soil is gradually lost these days as trees are being cut down.(T) • 4. Air pollution and water pollution are the two causes of problem that many parts of the world have become desert.(F) • 5. Chemicals in the smoke from power stations can travel hundreds of miles before falling down to the rain.(F) • 6. After a bad accident at a nuclear power station, 50%of the trees in Germany were damaged.(F) • 7. The writer uses the examples of the accidents in both India and Russia to explain how water is polluted.(F) • 8. Once oceans are polluted, they are not able to clean themselves.(F)

17. The main idea of each passage The area of desert is growing and good soil is gradually lost. Earth: Air: Chemicals in the smoke cause a lot of damage and serious accidents took place from time to time. 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. Water:

18. DISCUSSION

19. What kind of pollution can you • think of ? • (2) Why trees are important? • (3) What are the causes of water • pollution? • (4) What can be done to stop land • from becoming into desert? • (5) What else do we know about the • problems that the earth is facing? • (6) What steps should we take to • save the earth?

20. So everybody should remember: A lot of damage has already been done to the earth, including pollution, nuclear waste, radiation and so on. We are also aware that there is only one earth for us. So the idea that everyone should keep in his or her mind is stopping any damage to the world and saving the earth.

21. practice Now you are a reporter from the 21st Century , when you are making a social survey in your home town, you see some factories in your home town are seriously polluting the air and the water. The environment is not well protected. You are going to Interview a government official and write a report about what you see. You are supposed to tell the Importance of stopping the pollution and Protecting the environment. Now do the interview first in pairs and then make an oral report according to the following pictures.