译林牛津版九年级上册（主题阅读+综合能力）专项训练四 Unit 4 TV programmes（含答案）.zip

培优专项训练四 Unit 4
主题阅读训练
一、完型填空
Computers can injure you. Most other injuries happen suddenly. For example, if you 1   a bike and break your arms, it happens very   2   . But computer injuries happen slowly. You    3    know how to ride a bike safely. Now learn to use a computer safely.
Your eyes—  4   light can injure your eyes,   5   never sit too close to a computer screen. Your eyes should be   6  50 centimeters 7   the screen.  8  remember to look away from it. This gives your eyes a rest. When you use a computer, the window   9   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   10   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  11  times. If you use a keyboard for a long time,   12   these three rules: 1）Rest your wrists on something. 2）Keep your elbows（肘）at the same height 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 should sit with your back straight. 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 a