一般卧室里不能摆放过多的植物过夜，这是因为（    ）

阅读理解
   There is an old English saying.It tells us that we must go to bed early and get up early in the morning.Then we shall be healthy.We shall also be rich and clever.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 well and they may not be healthy.The body also needs exercise.Walking, running, jumping and playing games are all exercise.Exercise keeps the body strong.Exercise also helps the blood to move around inside the body.It is very important.Our blood moves to all parts of our body.The head also needs blood.Exercise helps us to think better.

古诗《示儿》表达了作者怎样的思想感情？

三百七十亿           写作：____

八亿零八百万         写作：____

三亿八千万           写作：____

三十二亿             写作：____

— ____?

— He is my uncle.