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题型:阅读选择 题类:常考题 难易度:普通

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 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 (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.
举一反三
阅读理解

      What's going to happen in the future? Will robots control our planet? Will computers become smarter than us? Not likely. But here are some things that scientists say are most likely to happen in 10 to 0 years from now, according to the BBC.

 Digital money      

      We used to pay with cash(现金) for everything we bought. Now when we use a credit card(信用卡) to shop online, money is spent without us seeing it. That means we are already using digital(电子的) money. Using a card is much easier than searching our pockets for change. It is also safer than carrying a lot of cash.    

When ATM cards were first introduced, they were not accepted everywhere. But now it's hard to live without them. It's reported that people in Sweden completely stopped using cash last year, and the US might be next.

Bionic(仿生的) eye    

It's no longer something only in a science fiction movie. People who are blind may have a chance to get their sight back—by wearing bionic eyes.

      A blind eye can no longer sense light, but a bionic eye can use a camera to “see” the environment and send data(数据) to the mind. Now the bionic eye only allows patients to see lights and unclear shapes. A high resolution(高清的) image could be just a few years away. 

Self-driving cars     

      Unlike a human driver, a self-driving car won't get distracted(分神) by a phone call, the radio or something outside the window. Sensors (探测器) and cameras on the car would allow it to stick strictly (严格地遵守)to the rules of the road and keep a safe distance from other cars. This would greatly reduce(减少) the number of road accidents. You could even take a nap while the car drives itself. In the future, driverless cars would be widely accepted.

 阅读理解

Whether we're young or old, rich or poor, we have one thing in common: The moon has always looked down at each of us when it lights up the night sky. 

Just like a mirror(镜子), the moon reflects(反射) the sun's light. It can also reflect people's feelings. This is probably why the moon is always popular among Western and Chinese music, poems and other forms of literature. So when we look at the moon, what do we see looking back at us? Well, that depends on who's looking. 

The ancient Greek poet Sappho, for example, saw the moon as a woman who lit up space with her beauty. 

Later in England, however, the moon's image(形象) was completely different. In the Middle Ages, English people often drank to get away from difficult life. In their eyes, the moon was a man who liked drinking. In London, at least three pubs(酒馆) were named Man in the Moon. It's probably because the bright moon at night looks like a man's red face after drinking. 

 ▲  Chinese Tang Dynasty poet Li Bai's Quiet Night Thought reads, "I look up to the bright moon, and then I look down and think of my home town. " Similarly, Zhang Jiuling wrote in another poem, "Looking at the moon and thinking of one far away. " So in Chinese culture, when people look at the moon, they may miss their home town and someone. Very interesting, right?

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