Computerscaninjure(伤害)you.Most

更新 2022-09-03
科目英语
题型阅读理解
难度中等
浏览 1934

Computers can injure(伤害) you. Most other injuries happen suddenly. For example, if you     a bike and break your arms, it happens very     . But computer injuries slowly.You probably know how to ride a bike safely. Now learn to     a computer safely.
Your eyes
   light can injure your eyes,     never sit too close to a computer screen. Your eyes should be     50 centimeters（厘米）     the screen（平幕），   Remember to look away from it sometimes. This gives your eyes a rest.
When you use a computer, the window    be on your left or your right. If it is behind you, the light will reflect on (反射) the screen. If the window is in front of you, the sun and the screen will      shine into your eyes.
Your hands and wrists (手腕)
Hand and wrist injuries can happen because the hands and wrists are moved in the same way      times. If you use a keyboard for a long time,      these three rules: 1) Rest your wrists on something. 2) Keep your elbows at the same height as the keyboard. 3) Stop something and exercise your hands, wrists and fingers in a different way.
Your back
Some people sit for many hours in front of a computer. If you sit in the wrong way, you can injure your back or your neck. So you should sit with your back straight. The top part of the screen should all be in front of your eyes. Your forearms, wrists, hands and the upper part of your legs should all be parallel (平行) to the floor. If you are sitting for a long time, get up      30 minutes and      your arms, legs and necks.
   your computer, but use it safely.

A．fall over

B．fall down

C．fall off

D．fall onto

A．carefully

B．luckily

C．slowly

D．quickly

A．fix

B．run

C．ride

D．drive

A．Too many

B．Too much

C．Much too

D．Many more

A．so

B．because

C．but

D．when

A．at last

B．at most

C．at least

D．less than

A．to

B．from

C．on

D．away

A．sometime

B．some time

C．some times

D．sometimes

A．can

B．may

C．must

D．should

A．both

B．never

C．all

D．none

A．hundred of

B．hundreds

C．hundreds of

D．two hundreds

A．follow

B．work

C．copy(复制)

D．write

A．one

B．every

C．both

D．once

A．need

B．exercise

C．move

D．climb

A．Enjoy

B．Use

C．Protect (保护)

D．Keep

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