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
This is a talk by a London taxi driver.
"I've been a taxi driver for nearly ten years. Most London taxi drivers have their own taxis."
"It's a nice job most of time. you meet a lot of people. I always work at night, because there is too much traffic during the day. I live twenty miles (Ӣ��) outside London and I go to work at 5:30 in the afternoon."
"I usually go home between 2 and 3 in the morning."
"Some very strange things happened late at night .The other day I was taking a woman home from a party .She had her little dog with her. When we got to her house, she found that she had lost her key. So I waited in the car with the dog while she climbed in through the windows."
"I waited and waited. After half an hour of ringing the bell I decided to find out what was going on . I tied the dog to a tree and started to climb in through the window. The next thing I knew was that the police came. They thought I was a thief(С͵).
Luckily the woman came downstairs. She must have gone to sleep and forgotten about me and the dog!"
1..The driver always worked at night because it was easier to _____.
A. drive B. make money C. climb in through the window D. meet a lot of people
2.The woman climbed in through the window because _____.
A. she wanted to have a sleep B. her husband didn't open the door for her
C. she didn't want to pay the driver D. she couldn't find her key
3..The story happened _____.
A. early in the morning B. late at night
C. 20 miles outside London D. near the police station
4.Which of the following is wrong?
A. The driver worked until between 2 and 3 in the morning.
B. The police made a mistake.
C. The woman had no money to pay the driver.
D. The woman had forgotten about the driver and the dog.
5..The driver climbed in through the window to
A. get money from the woman B. return the dog to the woman
C. see what was happening in the house D. phone the police
I have been keeping 41 pets at home: mice, turtles and rabbits. But golden hanmsters are my favorite. I am always surprised by 42 cute they can be.
It was summer when I first 43 two golden hamsters. They 44 brown, about the size of my hand. When I 45 by, they were cracking melon seeds (嗑瓜子). They did that as 46 as any human! I was so amused (逗乐) that I bought them at once.
The only one who was not happy to see the newcomers was my 47 . She thought 48 would make our home dirty all the time. So I made a 49 for them on the balcony (阳台).
Hamsters always want people to look at them. They try to get noticed by raising the front part of their body, 50 they watch you come and go until you stop and talk to them. Watch out when they start to roller-turn in their cage (笼子). They won’t stop 51 you have tears of laugher!
Hamsters are 52 than you think. One morning several months ago, I found one missing. The side of the cage was much 53 than the hamster and the cage had a lid. How did the little one climb up, open the lid and 54 ? I thought hard. But I’ve 55 found an answer.
1. A. one B. different C. three D. same
2.A. how B. how a C. what D. what a
3. A. carry B. saw C. gave D. left
4. A. are B. was C. were D. is
5. A. pass B. past C. passing D. passed
6. A. soon B. well C. possible D. better
7.. A. father B. brother C. mother D. teacher
8. A. they B. them C. their D. theirs
9. A. school B. factory C. shop D. home
10. A. so B. then C. just D. next
11. A. if B. as C. until D. whether
12. A. smart B. smarts C. smarter D. smartest
13. A. tall B. taller C. tallest D. most tallest
14.. A. run at B. run away C. run to D. run out of
15.. A. ever B. already C. sometimes D. never
|
A. I’ve gone to a paper factory. B. That would be fine. C. That’s terrible! D. Yes, of course. E. Good idea! F. The river has become very dirty. G. I’ve been to a paper factory. |
Jack: Hi, Kate, What are you going to do this weekend?
Kate: I’m going to Wuhan.
Jack: Wuhan? 26 ?
Kate: Because there is going to be a match between China and Russia.
Jack: How wonderful!
Kate: Would you like to go with me?
Jack: I’d like to very much.27 ?
Kate: It’s a volleyball match.
Jack: 28 ?
Kate: It will be held in Wuhan Gym.
Jack: By the way, 29 ?
Kate: Let’s take the bus there tomorrow, shall we?
Jack: 30 . Good-bye!
Today my mother is feeling ______ to go to work.
A. enough good B. good enough C. enough well D. well enough
The girl was often heard ______ happily in her room.
A. sing B. to sing C. singing D. sings
