Computers can injure(伤害)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 happen slowly.
You may 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 more than 50 centimeters from the screen. Don’t forget 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 the screen(反射在屏幕上). 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)as high as the keyboard.
3) Stop sometimes 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 shouldn’t bend(弯曲) your back when you sit. The top part of the screen should 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 half an hour and exercise your arms, legs and neck.
Enjoy your computer, but use it safely.
Title: How to use a computer safely | ||
Different 1. of your body | Causes(原因) of the injuries | Some 2. of keeping you away from computer injuries |
Your eyes | ◆Too much light can injure your eyes. | ◆Don’t sit too close to a computer screen. ◆Your eyes should be 3. 50 centimeters from the screen. ◆ 4. to look away from the screen sometimes. |
Your 5. and wrists
| ◆You 6. them in the same way hundreds of times. ◆You use a keyboard for a long time. | ◆ 7. your wrists on something. ◆Keep your elbows at the same 8. as the keyboard. ◆Exercise your hands, wrists and fingers in different ways. |
Your back
| ◆You sit for many hours 9. a computer. ◆ You sit in the wrong way. | ◆You should keep your back 10. when you sit. ◆Get up every half an hour if you are sitting for a long time. |
Paris is a very nice city. Mrs. Curie often goes to Paris and she has a good time there. Mrs. Curie is old and very oblivious, so she sometimes can’t find her way.
Now she sees a man near a bus stop. “I can ask him the way,” she says.
“Excuse me,” she says in French. “But can you tell me the way to Notre Dame de Paris(巴黎圣母院), please?”
But the man doesn’t know French. He is Australian! Then he puts his hand into his coat and takes out a small book. He opens it and finds a phrase(短语). He reads, “I’m sorry. I don’t speak French.”
1.How does Mrs. Curie like Paris?
A. Not at all. B. A little.
C. Very much. D. We don’t know.
2.Which of the following has the closest meaning to the underlined word “oblivious” in this passage?
A. Hopeful. B. Beautiful.
C. Cheerful. D. Forgetful.
3.Where is the man from?
A. England. B. Paris.
C. Australia. D. France.
4.From the story we know ____________.
A. the man is a driver
B. the man doesn’t tell Mrs. Curie the way
C. Mrs. Curie lives in Paris
D. Mrs. Curie and the man are friends
5.What language does the man speak when he answers Mrs. Curie?
A. French. B. English.
C. Russian. D. Chinese.
In Britain, children go to school from Monday to Friday. School usually starts nine o’clock in the morning and finishes at about three o’clock in the afternoon. Most schools ask their students to wear a school uniform.
School always starts with registration. What is registration? Every child going to school each morning and afternoon is recorded(记录) in a special book. The teacher reads out each child’s name in turn. On hearing his/her name, the child makes a reply(回复) and the teacher writes in the book. From the book, you can see whether(是否) the child is in school or not.
At 9:10, children go to the meeting place. There they sing songs, listen to a story and pray(祈祷).
The first lesson begins at 9:20. They have break time from 10:20 to 10:35. During break time, the children have a snack and play games outdoors. After that, they go back in for another lesson until lunch at 12:00. Afternoon lessons begin at 1:10 and end at 3:15, and children go home. They don’t have a break in the afternoon.
1.How much time does a British student usually spend at school in a week?
A. Around 20 hours. B. Over 40 hours. C. About 30 hours. D. Only 6 hours.
2.The following things take place in British schools each morning. Which do you think is the right order(顺序)?
① Teachers call over the children’s names.
② Teachers write something in the book.
③ Children answer “Here”.
A. ①②③ B. ①③② C. ②①③ D. ③①②
3.What do they usually do after registration?
A. They meet, sing and pray.
B. They have a lesson.
C. They do some reading in a classroom.
D. They play some games.
4.When do the children have a snack?
A. Before they go to school.
B. After they have afternoon lessons.
C. When they finish their outdoor games.
D. At about half past ten in the morning.
5.Which of the following is true?
A. In Britain, most students live at school at night.
B. Students in Britain mustn’t call their teacher’s names.
C. Students in Britain go to school before nine every morning.
D. Students in Britain have a long break between the afternoon lessons.
When I was young, my mother always spent lots of time behind a sewing machine（缝纫机）with a happy look on her face. For all three children in our family, she made all the .
My mom made it look so . But the first time I tried to make something. I just couldn’t do it. I worked too quickly, and when I finished, it looked bad. Soon I just gave up.
This summer, I really wanted to a dress to wear at a party. I picked out some nice cloth, and I found a nice style in a book. I got so about sewing that I couldn’t even sleep. I couldn’t wait to .
I started early the next morning. My mom was having a meeting, so if I had questions, there could be to ask.
I started sewing slowly and carefully, and I tried to do everything . When I was sewing the top, I made the neck too small. But the rest was fine.
“I finally made it!” I shouted two hours later. And it fit! For the first time, I could wear something I had made with my own .
If you want to learn something, my advice is: never when you can’t do it well.
1.A. standing B. sitting C. walking D. playing
2.A. meals B. shoes C. clothes D. money
3.A. easy B. hard C. tiring D. boring
4.A. buy B. borrow C. make D. bring
5.A. angry B. tired C. sad D. excited
6.A. sleep B. stop C. start D. leave
7.A. no one B. someone C. someone else D. others
8.A. different B. wrong C. right D. interesting
9.A. eyes B. hands C. head D. arms
10.A. start to learn B. ask for help C. do it yourself D. stop trying
— Don’t forget to bring your homework to school tomorrow.
— _______.
A. OK! I will B. OK! I won’t
C. I’m afraid I will D. I’m afraid I won’t
— Steve is good at writing short stories.
— Yes, he is. But he writes _______ than us, so he doesn’t get good points in writing.
A. less carefully B. more carefully
C. more careful D. less careful
