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

 

阅读理解

　　Mr. Black worked in an office in London, but he lived in the country and came to work by train every day. The station was not far from his office, and Mr. Black always walked from his office to the station in the evening, because he liked walking. He always went along the street. Every evening he passed a poor man there. The man sat at the side of the road and sold matches (火柴), and there was always an old dog near him. There was a piece of paper around the dog' s neck, and the words I AM BLIND were on the paper.

　　Mr. Black was a kind man. He always stopped and said some kind words to the poor man and gave him a little money, but he did not take any of his matches.

　　One day Mr. Black had a lot of work in his office and was very late. He said, “My train always leaves at five past six, and it is ten to six now. I'm not going to talk to the poor man today, and I' m not going to give him any money.” He came to the man and his dog, but he did not stop and did not say anything. He walked quickly to the station. But the poor man stood up quickly, ran after him and said, “Why don't you give me any money today? You're always kind to me. Give me a little money today, too. I'm a poor man.”

　　Mr. Black stopped and looked at him. “You are a blind man. How did you follow me?” he said. The poor man said, “No, I'm not blind. My dog is.”

(1) Mr. Black walked to the station every day because ________ .

[　　]

A. he had no car

B. the station was far

C. he liked walking

D. he lived in the country

(2) The old man sat at the side of the road to ________ .

[　　]

A. sell matches

B. have a rest

C. get food for his dog

D. show his blind dog

(3) On the way to the station, Mr. Black always stopped because he ________ .

[　　]

A. liked the old dog

B. liked to talk with the old man

C. was sorry for the old man

D. wanted to buy some matches

(4) Why didn't Mr. Black give the old man any money one day? Because he ________ .

[　　]

A. had given him too much help already

B. didn't want to talk to him any more

C. walked too quickly and didn't see him

D. wanted to catch the train and had not enough time

(5) The old man let his dog carry the words I AM BLIND because he wanted people to ________ .

[　　]

A. help him in his trouble

B. stop and watch his dog

C. say kind words to him

D. be kind to his dog

                                 
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.
【小题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

【小题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

【小题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

【小题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

【小题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