Ⅰ Listen and choose.（听录音，选出你所听到的句子。）
()1. A. We can see Earth and the Sun from space.
B. We can see Earth and the Moon from space.
()2. A. Are there any living things on Mars?
B. Are there any living things on Earth?
()3. A. The sunrise on Mars is very beautiful.
B. The sunset on Mars is very beautiful.
()4. A. Mars travels around the Sun.
B. Mars travels around the Moon.
()5. A. Earth is called the "Blue Marble".
B. Mars is called the "red planet".

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

Ⅱ. Listen and choose.（听对话，选择正确的答语。）
()1. A. Because it's very hot. B. Because of its red soil. C. Because of the red sunrise.
()2. A. They are friendly. B. There are no aliens. C. She saw an alien.
()3. A. Water and soil. B. Plants and trees. C. Animals and people.
()4. A. A flag. B. A rover. C. A space station.
()5. A. The Sun and clouds.
B. The Moon and the stars.
C. Earth and the Sun.

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

Ⅲ. Read and choose.（读一读，选择合适的选项补全对话。）
Binbin: What are you doing, Lulu?
Lulu:1.
Binbin: Are there any people on the Moon?
Lulu:2.
Binbin:3.
Lulu: No, there aren't.
Binbin: Why not?
Lulu: There is no air there. 4.
A. So there is no life on the Moon.
B. I'm reading a book about the Moon.
C. Are there any animals there?
D. No, there aren't.
E. I don't think so.
Binbin: Are there any aliens there?
Lulu:5.

1. B 2. D 3. C 4. A 5. E