5．
将下列单词或词组填入空格。每空格限填一词或词组，每词或词组只能填一次。
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A. computer B. worst C. look after D. best
E. cause
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Many young people can use a computer, but
few of them know how toit.
Remember the following tips when you use a computer.
Keep your computer in a cool, dry room. Too
much or too little heat is bad for computers. A damp atmosphere is also bad for
them. Most computers workat a temperature of 5-10 degrees
centigrade.
Do not let people smoke cigarettes near your computer. Smoke of all
kinds is very bad for many parts of the computer and canmany
problems.
Do not eat or drink when you are near your.
Pieces of food or drops of water on the keyboard can also cause many problems.
