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NA

Computer are very (1)............, but they also can(2)............. problem. One kind of problem is with the computer's memory. It is not prefect, so(3).............. computer lose (4)............ information. (5).............. problem is with the machinery. Computer are machines, and(6)............... can break down. When computers break down, they(7)..................... erase information, like chalk on a blackboard. Or they may stop doing anything at all. And there is another different kind of problem with computers. Some doctors say they may be had for your (8)............... They say you should computers all day.

DH
24 tháng 5 2021 lúc 23:11

1 useful

2 cause

3 sometimes

4 important

5 Another

6 machine

7 may

8 health

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