If you sit in a chair _____a long time, your back may begin to hurt.
A．a(chǎn)tB．inC．onD．for
D解析:
介詞的用法。介詞for 用來引導(dǎo)一段時(shí)間，本身無具體意義，有時(shí)可譯為“計(jì)，達(dá)”等。
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科目：初中英語 來源：2012屆浙江省寧波市初三3月月考英語試卷 題型：閱讀理解


Computers can injure 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 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 at least 50 centimeters from the screen. Remember 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 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 every 30 minutes and exercise your arms, legs and necks.
Enjoy your computer, but use it safely.
【小題1】A computer screen may injure your eyes if __________.
A. you sit 60 centimeters away
B. you remember to look away
C your eyes are too close to it
D the window is on your left or your right
【小題2】Hand and wrist injuries are caused when you _________.

A．get plenty of exercise
B．move in the same way again and again
C．rest your wrists on something
D．keep your elbows as high as the keyboard
【小題3】Your eyes and hands will be safe if __________.
A．you work near a window
B．you often take a rest from working
C．you use a keyboard for a long time
D．the window is behind you
【小題4】It is good for your back and neck if you sit __________.
A．in the right way
B．for many hours
C．with the screen below your eyes
D．with your back leaning forward
【小題5】What would be the best title for the passage?
A．How to protect your eyes.
B．How to protect your hands and wrists.
C．How to use a computer safely.
D．How to protect your back.

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科目：初中英語 來源：2013屆江蘇省鹽城市阜寧縣東溝中學(xué)九年級(jí)下學(xué)期期中考試英語試卷（帶解析） 題型：閱讀理解

Computers can injure 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 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 at least 50 centimeters from the screen. Remember 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 (肘部） 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（前臂）, wrists, hands and the upper（上部） 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 exercise your arms, legs and necks.
　 Enjoy your computer, but use it safely.
【小題1】A computer screen may injure your eyes if __________.

A．you sit 60 centimeters away
B．you remember to look away
C．your eyes are too close to it
D．the window is on your left or your right
【小題2】Hand and wrist injuries are caused when you _________.
A．get plenty of exercise
B．move in the same way again and again
C．rest your wrists on something
D．keep your elbows as high as the keyboard
【小題3】Your eyes and hands will be safe if __________.
A．you work near a window
B．you often take a rest from working
C．you use a keyboard for a long time
D．the window is behind you
【小題4】It is good for your back and neck if you sit __________.
A．in the right way
B．for many hours
C．with the screen below your eyes
D．with your back leaning forward
【小題5】What would be the best title for the passage?
A．How to protect your eyes
B．How to protect your hands and wrists
C．How to use a computer safely
D．How to protect your back

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科目：初中英語 來源：2013屆江蘇南通海安縣初三學(xué)業(yè)水平測試（一模）英語卷（帶解析） 題型：選詞填空

請(qǐng)根據(jù)句意從方框中選擇合適的單詞，并用其適當(dāng)形式填空，使句子通順。

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【小題1】Look! They are watching the film Lost in Thailand with __________ on the Internet.
【小題2】My father’s __________ birthday happens to be on Father’s Day.
【小題3】The Internet is __________ used in most families in our country today.
【小題4】Those beautiful paintings don’t belong to us. They are those ___________.
【小題5】It will make you feel ____________ if you sit too long in front of the computer.

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科目：初中英語 來源：2011-2012學(xué)年遼寧省大石橋市九年級(jí)中考模擬考試（四）英語試題（解析版） 題型：閱讀理解

                                 

  Computers can injure 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 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 at least 50 centimeters from the screen. Remember 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 (肘部） 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（前臂）, wrists, hands and the upper（上部） 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 exercise your arms, legs and necks.

　Enjoy your computer, but use it safely.

1.A computer screen may injure your eyes if __________.

　　A. you sit 60 centimeters away  　 B. you remember to look away

　　C. your eyes are too close to it　　  D. the window is on your left or your right　

2. Hand and wrist injuries are caused when you _________.

　　A. get plenty of exercise　　       B. move in the same way again and again

　　C. rest your wrists on something　  D. keep your elbows as high as the keyboard

3.Your eyes and hands will be safe if __________.

　　A. you work near a window　　       B. you often take a rest from working

　　C. you use a keyboard for a long time　　D. the window is behind you

4.It is good for your back and neck if you sit __________.

　　A. in the right way                           B. for many hours

　　C. with the screen below your eyes       D. with your back leaning forward

5. What would be the best title for the passage?

　　A. How to protect your eyes            B. How to protect your hands and wrists

　　C. How to use a computer safely       D. How to protect your back

 

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