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Ⅳ. Listen and choose.（听录音，选择正确的答语。）
（
B. Running water can make electricity.
（
B. Maybe we can talk about wind power.
（
B. We can turn on the air conditioner.
（
B. We should follow the “3R” rules.
（
（
B
）1. A. We should save water.B. Running water can make electricity.
（
A
）2. A. How do we make power from wind?B. Maybe we can talk about wind power.
（
A
）3. A. We can use LED lighting.B. We can turn on the air conditioner.
（
B
）4. A. Because many resources are running out.B. We should follow the “3R” rules.
（
A
）5. A. I agree. B. Interesting!答案
1. B 2. A 3. A 4. B 5. A
听第一段对话，完成第1至3小题。
（
A. Water power.
B. Wind power.
C. Solar power.
（
A. How to save water.
B. How to save electricity.
C. How to reuse old things.
（
A. Last week.
B. Last month.
C. This morning.
（
C
）1. What topic did Mike choose for his project?A. Water power.
B. Wind power.
C. Solar power.
（
B
）2. What are Sarah's tips about?A. How to save water.
B. How to save electricity.
C. How to reuse old things.
（
B
）3. When did Sarah recycle some books?A. Last week.
B. Last month.
C. This morning.
答案
1. C 2. B 3. B
听第二段对话，完成第4、5小题。
(
A. By bus.
B. By car.
C. On foot.
(
A. Because it's fast.
B. Because it's healthy.
C. Because it saves energy.
(
A
) 4. How does Tom go to school every day?A. By bus.
B. By car.
C. On foot.
(
C
) 5. Why does Tom think riding a bike is good?A. Because it's fast.
B. Because it's healthy.
C. Because it saves energy.
答案
4. A 5. C
