Computers can injure you. Most other injuries happen suddenly. For example, if you fall off a bike and break your arms, it happens very fast. But computer injuries happen slowly. You probably know how to ride a bike safely.
Your eyes
Never sit too close to a computer screen. Too much light can injure your eyes. Your eyes should be at least 50 centimetres from the screen. After some time, remember to look away from it. This gives your eyes a rest.
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.
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.
A.If you use a keyboard for a long time, follow these rules. |
B.When you use a computer, the window should be on your left or your right. |
C.Now learn to use a computer safely. |
D.Enjoy your computer, but use it safely. |
E.The top part of the screen should be in front of your eyes. |