题目内容：

Everyone knows that exercise is important. We all need to exercise. Doctors say it is good for us. It makes you strong and smart. If you exercise every day, you can get good grades in the exam and do homework well. There are many ways to exercise. You can walk, run, swim, skate, or play ball games. But remember: Exercise enough, but not too much. It's best to exercise thirty minutes each time. Many people go to special places to exercise. People call them 'fitness centres'. They have a lot of equipment there. The equipment will help exercise your arms, legs and other parts of your body. Exercise can be fun. Friends can exercise together at a fitness centre. Or, they can play sports together.

1.Which of the following isn't the result（结果）of exercise?

A. It can make us strong and smart.

B. It can make us do work well

C. It can make us get good grades.

D. It can make us heavy.

2.If you want to be healthy, you can't _______.

A. walk or skate                        B. run or swim

C. swim or play football                D. watch TV all day

3.It's best to exercise_______ each time.

A. twenty minutes                      B. thirty minutes

C. forty minutes                       D. fifty minutes

4.The underlined(画线的) word 'equipment' means_______ in Chinese.

A.器材   B. 机器     C. 武器   D. 武装

5.Which of the sentence(句子) is not true?

A. Friends can exercise together.

B. We should exercise too much.

C. We all need to exercise.

D. Exercise can bring us fun.