2016-2017学年 译林版 必修5 Unit3 Science and nature Project 课件 (14)
2016-2017学年 译林版 必修5   Unit3 Science and nature  Project 课件 (14)第3页

1. What have people done to nature? 2. If we continue in this way, what might happen?

Listen again and answer the questions.

3. What did developing nations do decades ago? What are they concerned about now?

4. What are poorer nations doing now? What is their purpose for doing so?