There is an old saying:Early to bed,early to rise,makes a ma

There is an old saying:Early to bed,early to rise,makes a man healthy,wealthy and wise.It means that we should go to bed early and get up early the next morning.It's true that our bodies need to have enough sleep to be healthy.Children should have a ten-hour sleep every night.Those who do not have enough sleep can't do their work very well.They will not be clever and they may not get wealthy in the future.The body needs exercise,too.Walking,running,jumping,riding bikes and playing games are all exercises.Exercise helps to keep the body strong and fit.It also helps the blood(血液) to move around inside the body.The head needs blood too.So exercise helps people think better.
( ) 46.What does the word “rise” mean?
A.To do exercise.B.To get up.C.To stand up.
( ) 47.If children don't sleep for l0 hours ,they may .
A.not be late for school B.become wise C.not do well in their work ( ) 48.A person needs exercise because .
A.it makes him healthy B.he has lots of work to do C.he is strong ( ) 49.Which of the following is NOT true?
A.Exercise is not good to people's sleep.
B.It's good for you to get up early and go to bed early.C.A student should have l0 hours' sleep.
( )50.According to（根据） this passage ,to keep healthy,we should
A.eat a balanced diet B.go to bed early ,get up late.
C.go to bed early ,get up early and do more exercise.

BCABC