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

---It’s too cold today.

---Yes, why don’t you _______ your coat?

A. get onB. put up　 C. take off　　 D. put on

He used to ________very late, but now he is used to __________early.

　　　　 A. get up; getting up　　　　　 B. get up; get up

　　　 C. getting up; get up　 　　　　D. getting up; getting up

　　　　Now Mr Clark is travelling around the country（乡下）in his car.He wants to find a small hotel（旅馆）. He sees an old man at the 　　side of the road and says to him, "Excuse me, how can I get to the Sea Hotel? "

　　"Yes, " the old man answers, "I'll show you the way. " He gets 　　into the car and they drive for about twenty minutes. They come to a small house. The old man says, "Stop here! " Clark looks at the 　　house. "But this isn't a hotel. " He says to the old man. "No, this is my house. Now I'll show you the way to the Sea Hotel. Turn around 　　and go back to the big bridge. Then you'll see the hotel on your right. " The old man says.

　　根据短文内容，选择最恰当的答案。

　　1. Mr Clark ______.　　　　　　　　　　　　

[　　]

　　A. is making a trip to the country in his car

　　B. goes camping in the country

　　C. has a holiday

　　D. is travelling around a big city

　　2. He wants to ______.　　　　　　　　　　　　

[　　]

　　A. see an old man　　　　　B. visit some friends

　　C. find a big hotel　　　　D. get to the Sea Hotel

　　3. He asks the old man to ______.　　　　　　

[　　]

　　A. get into his car　　　B. show him the way

　　C. find a hotel　　　　　D. look at the house

　　4. Mr Clark drives twenty minutes to ______.

[　　]

　　A. get to the old man's house　　B. get to the Sea Hotel

　　C. a big bridge　　　　　　　　　D. go travelling the country

　　5. The Sea Hotel is close to ______.　　　　

[　　]

　　A. your right　　　　　B. the country

　　C. the big bridge　　　D. the old man's house