早睡早起身体好
There is an old saying: Early to bed and early to rise makes a man healthy, wealthy and wise. It says that we must go to bed early and get up early in the morning. The body must have enough sleep to be healthy. Kids should have eight hours' sleep every night. Kids who don't have enough sleep can't think carefully and can’t do their homework well. They will not be wise and they may not become wealthy!
The body also needs exercise. Walking, running and swimming are all exercise. Exercise keeps the body strong. Exercise also keeps the blood moving around inside the body. Blood takes nutrition to all parts of our bodies. The brains (大脑) in our heads also need blood. We think with our brains. If we keep our bodies healthy, and take exercise, we can think better! This is very important.
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1.What does the old saying mean?
A People should run and swim.
B People should make much money.
C It is dangerous to learn some old sayings.
D It is important to go to bed and get up early.
解析：选D。细节理解题。根据第一段第二句It says that we must go to bed early and get up early in the morning. 可知这句谚语的意思是我们必须早睡早起，故选D。
2.Why does a person need exercise?
A Because it is dangerous.
B Because it doesn't need time.
C Because it makes him strong.
D Because it is fun to do exercise.
解析：选C。细节理解题。根据第二段第三句Exercise keeps the body strong.可知运动使身体强壮，故选C。
3.Exercise also keeps the _____ moving around inside the body.
A body
B water
C blood
D juice
解析：选C。细节理解题。根据第二段第四句Exercise also keeps the blood moving around inside the body. 可知运动还能使血液在身体内流动，故选C。
4.From the passage, we can know that people think with their ____.
A toes
B arms
C brains
D fingers
解析：选C。细节理解题。根据第二段倒数第三句We think with our brains.可知我们用大脑思考，故选C。
5.Which of the following is TRUE?
A People will live without blood.
B Enough sleep makes you feel asleep.
C Exercise is good for a person's thinking.
D The more peanuts you have, the cleverer you are.
解析：选C。综合理解题。根据全文可知C选项“运动利于我们思考”正确，故选C。