题目内容：

    Many people can use the computer，but few of them know how to look after them.Remember the following when you use the computer.

1Keep your computer in a cool，dry room.Too much heat  is bad for computers.

2Do not let people smoke near your computer.It is bad for many parts of a computer.

3Do not eat or drink when you are near your computer.Pieces of food and a little water in the keyboard are also bad for a computer.

4You should often clean your computer and keep the screen  clean.

5Never use the software(软件)that you don't know about.Because some software may have viruses．If a computer gets viruses，it can't work well.

1.A computer room should be kept ______ and ______.

A.cold；hot B.cool；dry C.cold；dry D.warm；dry

2.In a computer room，we should't ______.

A.smoke, eat or clean the screen B.eat，drink or play with a ball

C.smoke or water any plants D.smoke，eat or drink anything

3.What does “viruses” mean in Chinese?

A.黑客 B.博客 C.病毒 D.网页

4.What does the writer tell us in this passage?

A.How to buy a computer. B.How to check a computer.

C.How to look after a computer. D.How to use a computer.