题目内容：

    Everyone knows that exercise is important. We all need to exercise. Doctors say it is good for us. It makes your body strong. Children who often exercise are more active. That means they do better in schoolwork than those who don’t exercise.

There are many ways to exercise. You can walk, run, swim, skate, or play ball games. Make sure you exercise in the following ways: You have to like what you are doing. Exercise enough—but not too much. It’s best to exercise twice a week. Thirty minutes each time is enough. Try all kinds of sports until you find one, two or even three sports that feel right for you.

You can exercise at fitness centers. There is a lot of equipment in the centers. The equipment will help you exercise your arms, legs and other parts of your body to make you keep fit. Some people buy equipment to exercise at home. But it’s very expensive.

1.Exercise can help children           .

A.feel excited B.keep fit C.look different D.always be happy

2.Which of the following is NOT mentioned(被提及) in the passage?

A. B. C. D.

3.Each time, it’s best to exercise           .

A.two hours B.one hour C.half an hour D.fifteen minutes

4.The word “fitness center” means           in Chinese.

A.娱乐中心 B.服务中心 C.健身中心 D.培训中心

5.The main idea of the passage is           .

A.the equipment of fitness centers B.the history of sports

C.types of sports D.how to exercise