Early to bed,early to rise makes man healthy,wealthy and wise.
　　This is an old English saying（谚语）.Have you heard of it before?It means that we must go to bed early at night and get up early in the morning.Then we shall be healthy.We shall also be rich（wealthy）and clever（wise）.
　　This is true.The body must have enough sleep to be healthy.Children of young age should have ten hours’ sleep every night.Children who do not have enough sleep cannot do their work very well.They will not be wise and they may not become wealthy!
　　The body also needs exercise.Walking,running,jumping,swimming and playing games are all exercise.Exercise keeps the body strong.
　　Exercise also helps the blood（血液）to move around inside the body.This is very important.Our blood takes food to all parts of our body.The head also needs blood.Exercise helps us to think better!
（ ）6．If we get up early and go to bed early,we’ll ________.
A．have enough exercise B．be healthy
C．think better D．have strong blood
（ ）7．If a chill doesn’t have 10 hours’ sleep,maybe he or she ________.
A．will become wise B．won’t do well in his work
C．will go to school in time D．will have enough sleep
（ ）8．A person needs exercise because ________.
A．it makes him healthy B．he or she has a lot of homework to do
C．he or she is strong enough D．he or she does exercise
（ ）9．Exercise makes the ________ move quickly and smoothly（流畅地）.
A．body B．blood C．children D．head
（ ）10．Keeping taking exercise every day can make our body ________.
A．sleepy B．tired C．strong D．weak