阅读短文和对话，判断正(T)误(F)。

　　Can you use a computer? Do you know how to look after a computer?

　　Many people often use a computer, but they can't look after it．We should look after it when you use a computer．

　　1．Keep your computer in a cool and dry(干燥的)room．

　　2．Keep your screen(显示屏)clean and don't make it too bright(明亮的)．A dirty or too bright screen is bad for your eyes．

　　3．You must not smoke cigarettes(吸烟)near your computer．Smoking is bad for your computer．

　　4．You shouldn't eat or drink near your computer．Small pieces of food or a little water on the keyboard can also cause(引起)many problems．

　　5．Make sure(务必)that the keyboard and screen are at a correct(正确的)height(高度)．If it is not correct, you will get backache(背痛)．

　　6．Never use the softwares(软件)that you don't know very much．Maybe(或许)it brings viruses(病毒)into your computer．If your computer has viruses, it can't work or even breaks down(损坏)．

(　　)1．Many people can look after a computer．

(　　)2．Too bright screen is good for your eyes．

(　　)3．Smoking is bad for your computer．

(　　)4．If you use a software, your computer can't work．

(　　)5．If the keyboard isn't at a correct hight, you'll get backache．