Computers can injure (伤害) you. Most other injuries happen su
没有日记的青春2022-10-04 11:39:541条回答
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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- _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
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- Computers can injure(伤害)you. Most other injuries happen sudd
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
小题1: of your bodyCauses of the injuries Some 小题2: of keeping you away from computer injuries
Your eyes◆Too much light can injure your eyes ◆Don’t sit too close to a computer screen.
◆Your eyes should be 小题3: 50 centimeters from the screen.
◆ 小题4: to look away from the screen sometimes.
Your 小题5: and wrists◆You 小题6: them in the same way hundreds of times.
◆You use a keyboard for a long time.◆小题7: your wrists on something.
◆Keep your elbows at the same 小题8: as the keyboard.
◆Exercise your hands, wrists and fingers in different ways.
Your back◆You sit for many hours 小题9: a computer.
◆ You sit in the wrong way.◆You should keep your back 小题10: when you sit.
◆Get up every half an hour if you are sitting for a long time.AIYICHENGGE881年前1 -
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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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