We all need to exercise. Doctors say it is good for us. It makes your heart and body strong. It also gives you more energy. And you will feel better about yourself. It’s good to exercise twice a week. Twenty minutes each time is enough.
There are many ways to exercise. You can walk, run, play sports or swim. Many people go to some places to exercise. They are called “fitness centers.” These places have a lot of equipment(装备). People use them to exercise. Some people buy equipment for their homes. But it is very expensive.
Exercise can be fun. Friends can exercise together at a fitness center, or they can play sports together. How do you exercise?
What is the main idea?

A．Exercise equipment is expensive

B．Playing sports is a good way to exercise.

C．Every person should exercise.

D．Fitness centers are popular.

We should exercise ________.

A．every day	B．20 minutes a week
C．twice a week	D．two times a month

At fitness centers,___________.

A．you can buy expensive equipment

B．people can do many kinds of exercising

C．it is very expensive

D．exercising is not fun

Which kind of exercising is not mentioned in the article?

A．Sports	B．Swimming
C．Running	D．Dancing

Which of these sentences about exercising is TRUE?

A．Exercising is expensive

B．Exercise is good for your heart.

C．Only doctors exercise

D．Friends never exercise together