Everyone knows that exercise is important. It makes your heart and body strong. But you need to know the following：

Get your body ready！

Before you do any exercise， make sure to warm up for at least five minutes. During warming up you should stretch （伸展） all parts of your body.

Exercise enough， but not too much.

Its best to exercise twice each week. Thirty minutes each time is enough. Try all kinds of things until you find one， two or even three sports that feel right for you.

Exercise at fitness centers.

There are a lot of equipments （設(shè)備） at fitness centers. The equipments will help exercise your arms， legs and other parts of your body to make you fit. Some people buy equipments for their homes. But it is very expensive.

Stop playing when you are hurt！

If you get hurt when you are doing exercises， dont play again until you are well.

Dont get thirsty！

Drink a lot when you are playing sports because it is easy to become thirsty.

根據(jù)短文內(nèi)容，選擇正確答案。

1. From the above， we know that these are ____.

A. signs B. notices C. suggestions

2. Youd better exercise ____ according to this passage.

A. about two hours a week B. twice a day C. twice a week

3. The phrase “fitness centers” in the text means ____.

A. 商務(wù)中心 B. 健身中心 C. 購(gòu)物中心

4. If you are doing sports， you should ____.

A. have a goad rest before exercise B. exercise twice a month

C. stop doing it if you get hurt

5. Which of the following is WRONG according to the passage？

A. Everyone should buy equipment for their homes.

B. Do enough exercise but not too much.

C. Warm up all parts of our body before exercise.