题目内容：

阅读理解。

There is an old English saying. It tells us that we must go to bed early and get up early in the morning. Then we can be healthy. We can be rich and clever.

This is true. The body must have enough sleep to be healthy. Children of young age should have ten hours sleep every night. If children don’t have enough sleep, they can not do their work well and they may not be healthy.

The body also needs exercise. Walking, running, jumping and playing games are all helps the blood(血液) to move around in the body. It is very important. Our blood moves to all parts of our body. The head also needs blood. Exercise helps us to think better.

1. If we want to be healthy, we must ________.

A. eat more          B. sleep more

C. play more         D. go to bed early and get up early

2. Children of young age should have ____________ hours sleep every day.

A. ten              B. nine

C. eleven            D. twelve

3. If children don’t have sleep, they can not _________.

A. work well        B. be clever and healthy

C. eat well         D. A and B

4. The body also needs  ____________.

A. walking          B. running

C. exercise          D. jumping

5.Does exercise help us think better ?

A. Yes, it does.

B. No, it doesn’t

C. It helps us think better.

D. It doesn’t help us think better.