阅读理解。

Here's the content (目录) of a book.

1. If you're interested in music, you can read "_____".

A. National sports

B. Sad movies

C. The planets

D. Weather service

2. You can learn something about weather in _____.

A. Unit 1

B. Unit 2

C. Unit 3

D. Unit 4

3. Words about _____ are in Unit 5.

A. music stars

B. weather conditions

C. sports tools

D. space news

4. In all the units, you can learn the skill of _____.

A. predicting by title

B. understanding attitude

C. understanding main ideas

D. guessing meaning of new words