Computers can injure you. Most other injuries happen suddenly. For example, if you fall off a b...

Computers can injure you. Most other injuries happen suddenly. For example, if you fall off a b...

小题1:B 小题2:A 小题3:C 小题4:B 小题5:A

试题分析：本文介绍几种使用电脑时保护身体的方法。要离屏幕远一点，就能保护眼睛。经常动动手腕就能保护手腕。挺直后背就能减轻后背的伤害。 小题1:细节理解题。根据原文Too much light can injure your eyes, so never sit too close to a computer screen.可知如果离电脑屏幕太近，就会伤害眼睛。故选B。 小题2:细节理解题。根据原文Hand and wrist injuries can happen because the hands and wrists are moved in the same way hundreds of times.可知当你一次一次在同一个地方移动的时候，手和手腕就会受伤。故选A。 小题3:细节理解题。根据原文If you are sitting for a long time, get up every 30 minutes and exercise可知经常休息，经常锻炼，你的眼睛和手就会受到保护。故选C。 小题4:细节理解题。根据原文So you should sit with your back straight.可知要想保护后背，你应该坐直了。故选B。 小题5:细节理解题。根据原文Now learn to use a computer safely.可知本文介绍的是如何安全地使用电脑。故选A。