Sales of laptop computers passed desktops in the U.S. for the first time ever this fall, according to market-research firm IDC. That's bad news for backs, necks and shoulders.
Laptops are bad for our body. When you work at a computer, the keyboard should be at elbow height and the monitor should be roughly at eye level, so you can sit well in a chair. But most users simply set their laptops on a desk or table. The keyboard is too high, which makes your arms reach up, your shoulders feel tired and your wrists bend down. The monitor is too low, which pulls your head and neck forward and down and your back may feel hurt.
That's OK if you use your laptop for a short time. But if you use one for hours without stopping – as do millions of college students, business travelers, telecommuters, video-gamers and growing numbers of office workers – your body may feel hurt. Ergonomics experts have warned about laptop problems for years. But people still like laptops better than the desktops. And they use laptops anywhere – in bed, on the floor – in all kinds of positions.
“How can a mouse or a keyboard hurt you?” says Thomas Caffrey, the founder of Myofactors LLC, “Wrong positions can be bad for your body. As time goes by, a wrong position can lead to pain in the neck, shoulders, back and arms, as well as headaches.”
【小题1】When you work at a computer, the keyboard should be ________.

June 5 is World Environment Day.This makes us pay more attention to our environment and the need to protect it.
When Wang Baoxuan,a Beijing high school boy,finishes his exercise books,he does not throw them away.He puts them in the big box in the corner of his classroom.Other students do so.Then the exercise books are sold to a paper-factory in Beijing.The paper is collected and used again by students and teachers in the school.At the same time,the money made from selling the paper goes towards schools in Inner Mongolia  for planting trees and grass.During spring time,the sandstorms often attack here.
Wang’s school is one of the schools in the capital that take part in the “green promise”environmental protection activity.So far,nearly 210,000 students have taken part in the activity,collecting more than 174 kilograms of waste paper.
“There are some environment problems in the city,such as sandstorms.We should do our duty and encourage others to do so as well.”Said Wang.
Vice-premier Zeng Peiyan has written a letter to the teachers and students to encourage them to go on taking part in the environmental protection.
【小题1】What do Wang Baoxuan and his schoolmates do with the waste exercise books?

阅读下面的短文，根据短文内容完成表格中所缺信息，每空一词。
There was a big drought(干旱) in southwest China in May, 2010. Most places got less rain than usual in Guangxi, Sichuan, Guizhou, Yunnan and Chongqing. People do not have enough water to live. Crops(庄稼) die before the harvest(收获).
People from other places in China are giving help. Kids in different places give them water and money. Students at Yingcai Primary School in Haikou donate 2,512 bottles of water.
Li Jiahang is a 2nd grade student at Huang Cheng Gen Primary School in Beijing. “There are 47 students in my class. We give our pocket money. We hope we can help the kids to drink clean water and buy things they need.”
In China, there are 669 cities. But more than 400 cities are in great need of water. Water is important in our life. Everyone has the duty to save water in our everyday lives. I believe if everyone makes a little effort, we can make a big difference.

Canada geese are large blue and white birds .When autumn arrives ,they have to fly south where the weather is warmer .The winters are so cold in Canada that the birds will die if they stay there .
Last spring ,Bill Lishman found sixteen young Canada geese on his farm “They had lost their parents , ”Bill thought . “These young birds won’t know what to do in the autumn .
Bill had a small plane and he decided to teach the birds to follow him .All through the summer ,he went on short trips in his plane and the young geese flew after him .”
When the cold weather arrived in autumn ,Bill flew to Virginia in the United States ,600 miles south from his home in Canada .The geese follwed him all the way .Bill flew to Virginia and returned home .
This spring ,Bill was waiting for the birds to come back .They didn’t arrive ,so Bill flew to Virginia to get them .He looked for them for two weeks but he couldn’t find them .
When he arrived back home ,Bill found the geese waiting for him .Then had found the way home without him !
【小题1】 Canda geese have to flly south______.

In 1620,about half the USA was covered by forests .Today the forests have almost gone .A lot of good land has gone with them ,leaving only sand .China doesn’t want to copy the USA’s example.We’re planting more and more tress .We’ve built the “Great Green Wall ”of tress across northern pat of our country .The “Great Green Wall”is 7,000 kilometers long ,and between 400 and 1,700 kilometers wide .It will stop the wind from blowing the earth away .It will stop the sand from moving towards the rich farmland in the south .More “Great Green Wall ”are needed .Trees must be grown all over the world. “Great Green Wall ”will make the world better .
根据短文内容，选择正确答案。
【小题1】In 1620 ,about_____ the USA was covered by forests

Someone is singing next door, but you feel unhappy because her singing is terrible. So you think she is just making noise. We know that too much noise makes people feel terrible.
Scientists are still trying to find out more about noise, but already it is known that a noise of over 85 decibels(分贝) can make some people tried and anxious(焦虑的).
In the past we thought only workers in very noisy places became deaf easily. Today, scientists believe that 10% of all workers in Britain become deaf in their work.
There are also new dangers from noise. Pop music, for example, can reach 120 decibels when it is played loudly five feet away! Only a plane can make such loud noise when it takes off.
There was an experiment in the United States. Some people would be given a lot of money if they stood below a jet when it was taking off over their heads. No one got the money after the jet flew past because all of them died in the noise.
People can’t pay their attention on what they are doing when there is much noise. Workers in noisy offices, for example, do their work more slowly than workers in quiet offices. Another study shows that workers in factories can do dull(枯燥的) jobs better when lively music is played for them. 

阅读下面5段语言材料，从A到F选项中，找出与它们相对应的标题。
【小题1】Dear Mrs. Web provides free personal advice and opinions for you. She receives and answers worldwide email questions. She will offer you some new suggestions on your problems, like study stress, disinterested friend.
【小题2】Every year thousands of old people are in need of our help. The Help Line provides a heartwarming, helpful, kind support and information service for the English–speaking aged people.
【小题3】. Earth club is for any student in Green School. Earth Club’s goal is to help keep the school, neighborhood, and city cleaner by encouraging recycling, highway clean up, and river, lake and school campus clean up. We hope to improve the environment and encourage others to do the same.
【小题4】 My great, great grandfather invented the carpet sweeper 125 years ago. This King Sweeper is the best by far. I invite you to try it in your home. You’ll fine it used daily in hospital, restaurants, offices and homes throughout the world. This is just the thing to keep your carpet soft, clean and fresh. Only for $29.99!
【小题5】 They can protect your eyes when driving, gardening or reading in sun. It can make your life easier and happier, and make you look smarter! $10.99 each or 2 for $19.99!

In China, water is used in many different ways. Farming takes 60 percent of China’s water use. Personal use, like drinking water, takes only 12 pencent. Fifty- three countries and regions (地方) in the world have water shortages. About one fifth of the world’s population was suffer(遭受) from water shortage.
Tips for saving water
Saving water is as easy as turning off a tap! Here are some simple things you can do at home.
² Turn off the water while you’re brushing your teeth.
² Take shorter showers. Can you get your showers down to three minutes?
² Fill a liter (升) plastic bottle with water and put it in your toilet tank. It will take up the same space as the water usually does, but in a year, it will keep 20,000 liters of water.
² When you wash dishes and clothes, don’t let the water run.
² Use the washing machine only when it’s full of clothes.
² 根据短文内容，填写下面表格。

Long time ago, our world was very beautiful. There were trees, flowers and rivers. It was very clean and tidy.  1 . We are living in a polluted environment, which is bad for out earth.   2  .The public has been calling for actions against pollution. Scientists have told us to protect out environment,  3 .
The earth is our only home. We should make it comfortable for ourselves and for our children in the future. Now nearly all of the countries are trying their best to stop pollution. Although they have done much, the progress is slow,   4 . No matter how difficult it is, we should try our best to fight against pollution. By working together,   5 .
根据短文内容，从方框中选出能填入空白处的最佳选项，补全短文。（5分）

It was so dark outside the car window that it was hard to see anything.
“ Can I have a carrot, Mom?” Bruce asked.
“I don’t have any carrots,” his mom said. “How about an apple?”
“No,” said Bruce. “It has to be a carrot.”
“Why do you want a carrot?” asked his mom
“You always say carrots help your eyes.” said Bruce. “If I eat one now, it might help me see in the dark.”
Would eating a carrot really help Bruce? What is special about carrots? What makes a carrot special is its color. Carrots are orange because they contain(包含) bta-carotene( 胡萝卜素). Beta-carotene is a way of saying vitamin A. Your eyes need vitamin A. It helps them work.
When light hits your eye, very small parts inside turn the light into messages. The messages go to your brain（大脑）, and then you know what you’re looking at. Your eye can only turn light into messages when it has a special chemical(化学物质). Your eyes use vitamin A to make the special chemical. Every time your eye changes light into messages, a little bit of the chemical is used up. By the end of the day, you’ve looked at hundreds of things. That uses up a lot of the chemical. Your eyes need to make more.
What should you eat if you don’t like carrots? Don’t worry. Other fruits and vegetables have vitamin A, too. The secret is in their color. Most orange or red fruits and vegetables contain beta-carotene, or vitamin A, Sweet vegetable, red peppers（胡椒）, Mangoes(芒果) are a few foods that have the same orange secret.
【小题1】 Bruce wanted a carrot because he thought _______.
A. he liked it
B. it could help him see in the dark
C.  it was sweet and delicious
【小题2】How does vitamin A help your eyes work?
A. The special chemical can stop your eyes from using up vitamin A.
B. The special chemical is used to make Vitamin A which turns the light into messages
C. Vitamin A is used to make the special chemical which turns light into messages.
【小题3】 Which of the following is NOT true according to the passage?
A. Carrots are orange because they store beta-carotene.
B. Any food which is orange or red must have some Vitamin A.
C. Most fruits that are orange or red store some beta-carotene or Vitamin A.
【小题4】 Sweet vegetable, red peppers, and mangoes don’t have the same orange secret, do they?
A. No, they don’t.     B. Yes, they do.     C. I’m not sure.
【小题5】 The passage mainly tells us that _______.
A. we can’t see in the dark unless we eat many carrots every day
B. we can’t see unless we eat a lot of orange or red food every day
C. we should eat some food containing vitamin A so that we can see well