题目列表(包括答案和解析)
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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They are going to have their meal ______ the top of the hill.
[ ]
A. on B. to C. in D. for
In England winter is not very cold and summer is____1____ l hot. There____2____ 2 a great differ once between summer____3____ winter. Why is this?
England has a warm winter and a____4____ summer because it is____5____ island country. In winter the sea is____6____ than the lan d. The winds from the sea____7____ warm air to England. In summer the sea is coo1er____8____ the land. The winds from the sea bring cool air
to England.
The____9____ winds blow over England all the year. They blow from the southwest. They
Are ___10_____ winds. They bring ___11_____ to England all the year. England has a lot of rain
all the year. The west of England is ___12_____ than the east. The winds must blow over the
highland in the west. They drop more rain there. The east ____13____ England is drier than the
west.
The four seasons are all____14____ months long. If you want to visit England, you can go
There____15____.
1. ( )
A. very B. badly
C. not very D. too
2. ( )
A. is not B. doesn’t have
C. is D. has
3. ( )
A. or B. and
C. but D. to
4. ( )
A. cold B. cool
C. hot D. warm
5. ( )
A. a B. an
C. this D. one
6. ( )
A. warmer B. warm
C. hot D. hotter
7. ( )
A. carry B. are
C. bring D. take
8. ( )
A. on B. than
C. then D. for
9. ( )
A. west B. east
C. southeast D. Southwest
10. ( )
A. cool B. winter
C. wet D. cold
11. ( )
A. cloud B. rain
C. cold D. snow
12. ( )
A. wet B. drier
C. wetter D. colder
13. ( )
A. over B. of
C. in D. from
14. ( )
A. two  f; B. four
C. three D. same
15. ( )
A. only in spring B. only in autumn
C. only in winter D. at any of the four seasons
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