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step_by_step3000第三册unit2答案及原文

英语专业学生经典的听力材料

Unit 2Earth and Environment

Part 1Warming up

A

1. ...impact of climate change … damage to crops … worse ...

2. ...2000 delegates …northern Brazil …

third United Nations Conference on Desertification.

3. ...A huge oil spill … Mexico, ...

4. Wildfires … Florida … contained … a week ...

5. ... Greenland is melting around the

edges … 50 cubic kilometers … raise global sea level ...

B

1. It attempts to balance environmental concerns and the needs of the community.

2. Reptile species are in greater trouble than amphibian species.

3. A new approach in the fight against the