"Early to bed and early to rise make a man healthy，wealthy and wise．"This is an old English saying．It means that when we go to bed early，we can get up early the next morning．Then we will become healthy．We will also become rich and clever．

This is true．To be healthy，we must have enough sleep．Experts（专家） say that adults should get seven to eight hours of sleep a night．Teenagers need nine to ten hours．And school﹣aged children may need more than ten hours of sleep．Children who do not have enough sleep can't do their work very well．They won't be wise and they may not become wealthy!

We also need exercise．Walking，running，swimming and playing games are all exercise．Exercise keeps us strong．It also helps the blood to move around the body．This is very important．Our blood takes the nutrition（营养） from food to all parts of our body．

The head also needs blood．So exercise that moves the blood to our head helps us think better!

（1）If we get up early and go to bed early，we'll 　　．

A．	become weak
B．	have more time
C．	be healthy
D．	have more work to do

（2）Who needs most hours of sleep to keep healthy？ 　　

A．	Adults
B．	Teenagers
C．	Experts
D．	School﹣aged children

（3）A child 　　when he does not have enough sleep．

A．	can't study well
B．	will be wise
C．	will be wealthy
D．	will be active in class

（4）A person needs exercise because 　　．

A．	he is strong enough
B．	it helps make him healthy
C．	he has a lot of homework to do
D．	It can bring him much blood

（5）Which of the following is Not TRUE？ 　　

A．	Exercise helps the blood to move．
B．	Exercise is good for a person's head．
C．	If we have enough blood，we'll be wise．
D．	It's good for us to get up early and go to bed early．