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Computers can injure （傷害） 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） 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 shouldn't bend（使彎曲） 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．

How to use a computer safely

Different （1）
parts
parts
of the body Causes of the injuries Some （2）
ways
ways
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 （3）
over
over
50 centimeters from the screen．
◆ （4）
Remember
Remember
to look away from the screen sometimes．

Your （5）
hands
hands
and wrists ◆You（6）
move
move
them in the same way hundreds of times．
◆You use a keyboard for a long time． ◆（7）
Rest
Rest
your wrists on something．
◆Keep your elbows at the same （8）
height
height
as the keyboard．
◆Exercise your hands， wrists and fingers in different ways．

Your back ◆You sit for many hours
（9）
before
before
a computer．
◆ You sit in the wrong way ◆You should keep your back（10）
straight
straight
when you sit．
◆Get up every half an hour if you are sitting for a long time．

【考點】人與社會．

【答案】parts；ways；over；Remember；hands；move；Rest；height；before；straight

【解答】

【點評】

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發(fā)布：2024/6/27 10:35:59組卷：82引用：2難度：0.4

相似題

2．You have lots of things you'd like to do.But sometimes it's hard to get to the finish line just like your goal.How can you break your bad habits and develop good ones？（1）

Here are a few opinions we often get from kids.followed by ideas that might help.
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   （2）

If you usually spend time lying on the sofa and watching TV programs or a video when you're bored，go somewhere else instead.Take a book to your room or your violin to the backyard.Or ask if you can help cook in the kitchen.
   ●（3）

   Start with "showing up. "Then take one small step or do one tiny task，followed by another and another.For example，how do I practice the piano？First sit at it.Then play one note at a time.Starting with a very simple step often helps.Why？It's easy，quick，and gets you in action.
   （4）

   ●I have no time.
   Take a look at the choices you make about how you spend time.Do those choices show what's important to you？Can you spare 10 minutes a day to work on a goal？Let's suppose you want to be a singer. （5）

Talk with a parent about why your goal counts.Discuss whether you can let go of something less important to free up time to achieve it.

A.Then keep taking steps.
B.A journey of a thousand miles begins with a single step.
C.I can't start such a huge goal.
D.And how can you try to reach your goals？
E.To change a habit，try changing where you spend your time.
F.Is it more important to practice singing than play video games？

發(fā)布：2025/1/5 10:0:6組卷：0引用：1難度：0.4