任務(wù)型閱讀

Computers can injure (傷害) 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 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 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 (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) at the same height (高度)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 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 the body

Causes of the injuries

Some 2. of keeping you away from computer injuries

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.

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 as 8. as the keyboard.

◆Exercise your hands, wrists and fingers in different ways.

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.

練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目：初中英語(yǔ) 來(lái)源：2015-2016學(xué)年江蘇無(wú)錫東湖塘中學(xué)七年級(jí)12月月考英語(yǔ)試卷（解析版） 題型：單項(xiàng)填空

We shouldn’t watch _______ TV. It’s bad for our eyes.

A. much too B. too many

C. many too D. too much

查看答案和解析>>

科目：初中英語(yǔ) 來(lái)源：2015-2016學(xué)年陜西西安第七十中學(xué)八年級(jí)上學(xué)期12月月考英語(yǔ)試卷（解析版） 題型：補(bǔ)充句子

補(bǔ)全對(duì)話。

根據(jù)對(duì)話內(nèi)容，將符合對(duì)話情境的句子抄寫(xiě)在對(duì)話空白處，使對(duì)話恢復(fù)完整。選項(xiàng)中有兩項(xiàng)是多余的。

A. Because I love children.

B. I’m going to be an astronaut.

C. I’d like to work in my hometown.

D. Is it interesting to become an astronaut?

E. I want to be a teacher.

F. I want to be a doctor.

G. What will you do to make your dream come true?

(Jane and Tony are classmates. One afternoon, they are talking about their future in the classroom.) A=Jane B=Tony

A: What are you going to be when you grow up?

B: 1.

A: Sounds like an exciting job.But I don’t think it’s easy to be an astronaut. 2. .

B: I’m going to do some exercise every day so that I can be strong enough. And ’m going to study science at college. How about you?

A: 3. .

B: Why are you going to be a teacher?

A: 4. .

B: Have you thought about where to work?

A: Yes. I have thought about it many times. 5. I want to do something to make my hometown better.

B: Great! Let’s work hard at our lessons to make our dreams come true.

查看答案和解析>>

科目：初中英語(yǔ) 來(lái)源：2015-2016學(xué)年山東夏津縣雙語(yǔ)中學(xué)七年級(jí)寒假第一次招生考英語(yǔ)試卷（解析版） 題型：書(shū)面表達(dá)

寫(xiě)作。根據(jù)所學(xué)的電腦知識(shí)寫(xiě)一下你朋友大明的周末.

查看答案和解析>>

科目：初中英語(yǔ) 來(lái)源：2016屆遼寧大石橋水源二中九年級(jí)上學(xué)期期末模擬英語(yǔ)試卷（解析版） 題型：完形填空

完形填空

根據(jù)短文內(nèi)容，從A、B、C、D四個(gè)選項(xiàng)中中選擇一個(gè)最佳答案。

Last Friday, after doing all the family shopping in the town. I wanted to have a rest before catching the rain. I __ _ a newspaper and some chocolate and __ __ into the station coffee shop. It was a cheap self-service place with long tables to ____ at. I put my heavy bag down on the floor, ___ the newspaper and the chocolate on the table and then went to get a cup of coffee.

When I came back with the coffee, There was someone ____ in the next seat. ____ was a boy, with dark glasses and old clothes, and ____ bright red at the front. He had started to eat my chocolate!

Naturally, I was rather uneasy about him, but I didn’t want to have any ____. I just read the newspaper, tasted my coffee and took a bit of chocolate. The boy looked at me in ____.Then he took a ____ piece of my chocolate. I could hardly believe it. Still I didn’t say anything to him. When he took a third piece, I felt more angry than uneasy. I thought, “Well, I shall have the last piece.” And I got it.

The boy gave me a strange look, then ____ up. As he left, he shouted out, “There’s something ____ with that woman!” Everyone looked at me, ____ I didn’t want to quarrel with the boy, so I kept quiet. I did not realize that I had ____ a mistake until I finished my coffee and was ready to ____. My face turned red when I saw my unopened chocolate under the newspaper. The chocolate that I had been eating was the boy’s!

1.A. stole B. bought C. sold D. wrote

2.A. went B. sat C. seated D. looked

3.A. sit B. seat C. lie D. laugh

4.A. pushed B. took C. put D. pulled

5.A. jumping B. playing C. sitting D. sleeping

6.A. He B. It C. Who D. What

7.A. cut B. washed C. covered D. colored

8.A. coffee B. trouble C. chocolate D. matter

9.A. carelessness B. anger C. surprise D. happiness

10.A. first B. second C. very D. last

11.A. stood B. took C. cried D. looked

12.A. strange B. wrong C. OK D. funny

13.A. and B. but C. so D. while

14.A. spelt B. corrected C. made D. found

15.A. finish B. leave C. jump D. shop

查看答案和解析>>

科目：初中英語(yǔ) 來(lái)源：2015-2016學(xué)年江蘇鎮(zhèn)江丹陽(yáng)市八年級(jí)12月月考英語(yǔ)試卷（解析版） 題型：單項(xiàng)填空

— ______did the baby panda Xi Wang ______ when she was born?

— About 100 grams.

A. How heavy, weigh B. What, weight

C. How many, weight D. How much, weigh

查看答案和解析>>

科目：初中英語(yǔ) 來(lái)源：2014-2015學(xué)年內(nèi)蒙古鄂爾多斯康巴什新區(qū)初中畢業(yè)升學(xué)第一次模擬英語(yǔ)試卷（解析版） 題型：閱讀理解

任務(wù)型閱讀。 閱讀短文，按要求完成短文后的各項(xiàng)任務(wù)。

Smog is a big problem in many Chinese cities. But it seems that besides wearing a mask, few of us know what has caused the smog and what to do to beat it. In fact, burning too much coal and oil are the main causes of PM2.5 and smog (霧霾).
To solve the problem, we should clean our coal and oil or replace them with cleaner energy such as natural gas. We ordinary people can do something to help control smog, too.

What can we do to help beat the smog?

Choose to take public transportation. Though many people have their own cars, they had better take public transportation, such as the subway or buses. If the destination (目的地) is not far away, you can also walk ________ ride a bike.

Call the hotline 12369. You can call the number for complaints and questions about environmental issues. It is run by China’s Ministry of Environmental Protection. If you call the number, some officers can come and try to solve the issues, so please remember it.

Report and resist pollutant source. If you find any pollutant source, take a picture of it and post it on your social media accounts. Remember to add “@local environmental departments” on weibo. Pay attention to factories that pollute the environment and don’t buy products from them.

Our environment will become better if everyone is concerned (關(guān)注) with the environment. This is what we need in the future. So everyone can do something to beat smog.

1. What are the main causes of PM2.5 and smog according to the passage?

_______________________________________________________________________

2. 根據(jù)文章內(nèi)容補(bǔ)全句子：

If you have environmental issues, you can _____________________________________.

3.將句中橫線處空缺的一個(gè)單詞填出使句意完整。

If the destination is not far away, you can also walk ________ ride a bike.

4.從文中找出與下面句子意義相近的句子

If all of us keep an eye on the environment, the world will become more beautiful.

________________________________________________________________________

5.將文中畫(huà)線句子譯成漢語(yǔ)：________________________________________________

查看答案和解析>>

科目：初中英語(yǔ) 來(lái)源：2015-2016學(xué)年江蘇海安城東韓洋初級(jí)中學(xué)九年級(jí)12月月考英語(yǔ)試卷（解析版） 題型：閱讀理解

“ Listen carefully to what I say.” the time traveler said. “I shall tell you something that you will not agree.”

“Why will we not agree?” I asked.

“Because the science and mathematics you know are not correct,” he said, “You believe there are only three dimensions(三維空間）---length, breadth(寬）and thickness.”

“There is nothing to agree with that,” the youngest member of our little group said.

“Exactly!” the time traveler answered. “But there is also a fourth dimension---time.”

“We all know about time,” another member of the group said,” Time passes.”

“I do not agree,” the time traveler said. “Length, breadth and thickness do not pass. They stay in the same place in space. We move about them. I can prove that time is the same. It does not pass. We move in time the same way that we move in length, breadth and thickness.”

None of us believed the time traveler, and we argued with him for many hours.

“If we could travel back in time,” the scientist said, “we could do things to change the future.”

“If we could travel forward in time,”the doctor(博士）said,“We could do things that change our present.”

The time traveler smiled. “It is clear,” he said, “that there is only one way I can show you that I am right. We must do an experiment. Please wait here.”

He left the room and soon returned, carrying what looked like a clock.

“This is a model of a time machine. It took me two years to make it.” the time traveler said, “I want all of you to understand that when I start the machine, it will immediately travel in time and disappear from present.”

He turned to the youngest of us. “Give me your hand.” he said.

The young man put out his hand. The time traveler took it and placed it on the machine. Immediately, there was a sudden wind, and the little machine disappeared.

I was certain this was not a trick, but the doctor was not so sure.

“Are you asking us to believe,” he said, “that the machine is now in the different time?”

“Certainly! In my laboratory, a full-size machine is almost complete. As soon as it is complete, I shall send myself on a journey through time. Would you like to see my machine?”

“Are you serious about this?” the doctor asked.

“I have never been more serious about anything,” the time traveler said, “Come.”

We followed him to his laboratory. There, we saw the actual machine, not quite complete, but large enough for a man to sit in.

1. How many dimensions did the time traveler say there are?

A. Two. B. Three. C. Four. D. Five.

2. How long did it take the time traveler to make his model time machine?

A. Two years. B. Two months.

C. Twenty years. D. All his life.

3. Which is the right order of what happened in the story?

a. The model time machine disappeared with a wind.

b. The time traveler came back to the room with a model time machine.

c. The members of the group argued with the time traveler for many hours.

d. The time traveler showed them a full-size time machine which was not quite complete.

e. The youngest man’s hand was placed on the model time machine.

A.e c a d b B.b c e a d C.c e b a d D.c b e a d

4.What can we infer(推斷）from the passage about the time traveler?

A. He believed that they could move in time.

B. He was playing a trick on a group of people.

C. He sent the young man to the future in the model time machine.

D. He would possibly send himself on a journey through time.

5. What kind of story do you think the passage is?

A. A detective story. B. A science fiction.

C. A romantic fiction. D. A horror story.

查看答案和解析>>

科目：初中英語(yǔ) 來(lái)源：2015-2016學(xué)年江蘇宿豫實(shí)驗(yàn)中學(xué)八年級(jí)上第三次月考英語(yǔ)試卷（解析版） 題型：單項(xiàng)填空

Most teenagers play games on their smart-phones（智能手機(jī)）_______fun.

A. at B. with C. in D. For

查看答案和解析>>

同步練習(xí)冊(cè)答案