三、听问句，找出正确的答语。
1. () A. We can see the Sun, clouds and birds.
2. () B. I think there aren't any aliens on Mars.
3. () C. We can write a spending plan and wait for a sale.
4. () D. She has 158 yuan.
5. () E. The air conditioner.
6. () F. Yes. Reduce, reuse and recycle.
7. () G. It gives us light and keeps us warm.
8. () H. Because Earth is running out of resources.

1. D 2. G 3. E 4. F 5. H 6. B 7. A 8. C

四、听对话，选出正确的答案。
() 1. People used as money after sea shells.
A. paper money B. copper coins C. bankbooks
() 2. Lucy pays money for her weekly .
A. piano class B. haircut C. dance class
() 3. The electricity of the man’s town is from a power station.
A. wind B. water C. solar
() 4. The woman may to save electricity at home.
A. unplug the machines after use
B. wash the dirty clothes by hand
C. keep only one light on at night
() 5. Taikonauts can on the space station.
A. ride a bike
B. do experiments(实验)
C. travel to Mars
() 6. may hit(击) our spaceships.
A. The Moon B. Astronauts C. Space junk

1. B 2. A 3. C 4. A 5. B 6. C