公司登记的基本原则是什么？

阅读理解

     In China, more and more middle school students are getting shorter sleeping time than before. Most students

sleep less than nine hours every night because they have much homework to do. Some homework is given by

their teachers, and some by their parents. Also some students don't know how to save time. They are not careful

enough while they do their homework, so it takes them a lot of time. Some students spend too much time watching

TV programmes or playing computer games. They stay up very late. Some students have to get up early every

morning onweekdays to get to school on time by bus or bike. It can be a long way from home to school.

     Schools and parents should cut down some of the homework so that the children can enjoy more than nine

hours of sleep every night. As we all know, children are our country's future. They should be well cared for.

根据短文内容, 判断正(T)误(F)

( )1. Most students are getting longer sleeping time than before.

( )2. Most students sleep more than ten hours because they have less homework to do.

( )3. Some students are not careful while they do their homework.

( )4. School and parents should cut down some of the homework so that the children can play computer games.

( )5. As children are our country's future, they should be taken good care of.

下列化学用语使用正确的是

A．石英的化学式：CaCO₃

B．CO₂的电子式：

C．HClO的结构式：H－O－Cl

D．Mg^2＋的结构示意图：

— Will you join the _____ race in the sports meeting?

— I haven't decided yet. [ ]

A. 100's metres

B. 100-metre

C. 100-metres

D. 100 metre

在电气图中，主电路画在辅助电路的（）。

A.左边

B.右边

C.下部

D.左边或上部

话本小说的由来