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 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 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 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, wrists, hands and the upper part of your legs should all be parallel 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. 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
B

Hundreds of people did not get their train tickets through the online train ticketing service after paying the money. The China Railway Customer Service Center said that it would try to solve the problem and return the money in 15 working days. The service center said changes would be made to the online booking system which limited each purchase which is finished in 30 minutes. Many people said that they failed to book tickets because of the time limit in purchase. People who paid without getting their tickets have formed groups on QQ. As many as 400 people had joined the QQ group by Thursday and the group continues to grow. The ticket buyers said their money had been returned through online banks but they didn't get confirmation from the online booking system. They are afraid that they will not be able to get refunds because they don't have the order number given to those who have succeeded in booking. People also said they were unable to inquire through the booking hotline 12306, because it is almost always busy. The China Railway Customer Service Center Website suggested that the online banks didn't return the payment information to the online booking system because of network problems. The online railway booking service was made by the Ministry of Railways on Dec. 21, in order that people can easily buy train tickets during the Spring Festival. According to the passage,which is Not true? A) The people who didn't get tickets can get their money back. B) People can't inquire their booking through the hotline 12306. C) People can easily book train tickets online without any problems. D) The online booking system didn't get the payment information.
C

Dear Mr. Heppell, I am Sabrina Akhtar studying in a high school and I've noticed that forests are disappearing. Forests are disappearing around the world each year. This is because of many different things such as farming and tourism pollution. If we stop doing these things, there will be a good future for people of tomorrow. Now I'm writing to ask you to help stop forests from disappearing. You can help by making shops stop selling paper made from trees and change to tree-free paper(paper not made from trees). This will help protect forests. There are many things we can do to help protect forests. If you would like to know more, please visit http://www.rainforestweb.org. By changing the little things, we can make a big difference. If you would like to contact me, please e-mail me at shazadinol@hotmail.co.uk. Thank you for taking your time in reading this letter. Yours sincerely, Sabrina Akhtar How can Mr. Heppell contact the writer? A) By calling her. B) By interviewing her. C) By visiting her. D) By e-mailing her.
D