Ⅰ. Listen and choose.（听录音，选出你所听到的单词。）
（
B
）1. A. sun B. power C. time
（
B
）2. A. space B. energy C. satellite
（
C
）3. A. light B. change C. heat
（
C
）4. A. drive B. reduce C. reuse
（
A
）5. A. useful B. helpful C. quick
答案：1. B 2. B 3. C 4. C 5. A
Ⅱ. Listen and choose.（听录音，选出与你所听内容相符的图片。）
（
A
）1. A.
B.
（
B
）2. A.
B.
（
A
）3. A.
B.
（
B
）4. A.
B.
（
B
）5. A.
B.
答案：1. A 2. B 3. A 4. B 5. B
Ⅲ. Listen and choose.（听录音，选择正确的答语。）
（
A
）1. A. We can take quick showers.
B. It is good to save energy.
（
B
）2. A. I can't find the pencils.
B. I agree with you.
（
A
）3. A. Running water can make electricity.
B. Water is important in our lives.
（
A
）4. A. Solar power and wind power.
B. We use green energy to run buses.
（
B
）5. A. We should use air conditioners less.
B. We can use old bottles again.
答案：1. A 2. B 3. A 4. A 5. B
