Computers can injure(伤害)you. Most other injuries happen sudd
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Computers can injure(伤害)you. Most other injuries happen suddenly.For example,if you fall off a bike and break your arms, it happens very quickly. But computer injuries happen slowly. You probably know how to ride a bike safely. Now learn to use a computer safely. ![]() Your eyes Too much light can injure your eyes, so never sit too close to a computer screen. Your eyes should be more than 50 centimeters from the screen. Don’t forget to look away from it sometimes. This gives your eyes a rest. When you use a computer, the window should 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 both 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 hundreds of times. If you use a keyboard for a long time, follow these three rules: 1) Rest your wrists on something. 2) Keep your elbows(肘)as high as the keyboard. 3) Stop sometimes 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 shouldn’t bend your back when you sit. The top part of the screen should 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 every half an hour and exercise your arms, legs and neck. Enjoy your computer, but use it safely.
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leonlylee 共回答了22个问题
|采纳率90.9%- 小题1:parts
小题2:ways
小题3:over
小题4:Remember
小题5:hands
小题6:move
小题7:Rest
小题8:height
小题9:before
小题10:straight
- 1年前
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- Computers can injure (伤害) you. Most other injuries happen su
Computers can injure (伤害) you. Most other injuries happen suddenly. For example, if you fall over a bike and break your arms, it happens very . But computer injuries happen slowly. You probably know how to ride a bike safely. Now learn to use a computer safely.
Your eyes light can injure your eyes, never sit too close to a computer screen. Your eyes should be 50centimeters(厘米)on the screen. remember to look away from it. 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. Hundreds of times. If you use a keyboard for a long time, these three rules: 1)Rest your wrists on something. 2)Keep your elbows(肘)at the same height as the keyboard. 3)Stop sometimes 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 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 every 30 minutes and your arms, legs and neck. your computer, but use it safely.小题1: A.much quickly B.faster C.slowly D.quickly 小题2: A.Too many B.Too much C.Much too D.Many more 小题3: A.so B.because C.but D.when 小题4: A.at last B.at most C.at least D.less than 小题5: A.Sometime B.Some time C.Some times D.Sometimes 小题6: A.can B.may C.must D.should 小题7: A.both B.never C.all D.neither 小题8: A.follow B.work C.copy D.write 小题9: A.need B.exercise C.walk D.shake 小题10: A.Enjoy B.Watch C.Protect D.Keep laonong20071年前1
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天xia天 共回答了11个问题
|采纳率100%小题1:D
小题2:B
小题3:A
小题4:C
小题5:D
小题6:D
小题7:A
小题8:A
小题9:B
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1年前查看全部
- Computers can injure (伤害) you. Most other injuries happen su
Computers can injure (伤害) you. Most other injuries happen suddenly. For example, if you fall off a bike and break your arms, it happens very quickly. But computer injuries happen slowly. You probably know how to ride a bike safely. Now learn to use a computer safely.
Your eyes
Too much light can injure your eyes, so never sit too close to a computer screen. Your eyes should be more than 50 centimeters from the screen. Don’t forget to look away from it sometimes. This gives your eyes a rest.
When you use a computer, the window should 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 both 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 hundreds of times.
If you use a keyboard for a long time, follow these three rules:
1) Rest your wrists on something.
2) Keep your elbows (肘) as high as the keyboard.
3) Stop sometimes 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 shouldn’t bend your back when you sit. The top part of the screen should 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 every half an hour and exercise your arms, legs and neck.
Enjoy your computer, but use it safely.Title: How to use a computer safely Different parts
of the bodyCauses of the injuries Some ways of keeping you away from computer injuries Eyes ◆Too much light can injure your eyes ◆Don’t sit too close to a computer screen.
◆Your eyes should be over小题1:
from the screen.
◆Remember to小题2: the screen sometimes.
小题3:◆You move them in the same way hundreds of times.
◆You use a keyboard for a long time.◆Rest your wrists on something.
◆Keep your elbows at the same
height as小题4: .
◆Exercise your hands, wrists and fingers in different ways.
Back◆You sit for many hours
before a computer.
◆ You sit in the wrong way.◆You should keep your back straight
when you sit.
◆小题5: every 30 minutes if you are sitting for a long time.没有日记的青春1年前1
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_有斐君子 共回答了15个问题
|采纳率80%小题1:50 centimeters
小题2:look away from
小题3:Hands and wrists
小题4:the keyboard
小题5:get up
1年前查看全部
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