Computers-draft one

The computer is the most influential invention of the twentieth century. They have already been widely used in our daily life. With it, we can listen to music, watch the latest movie, and play the online games, and so on. We can use it to make friends, such as get into the chat room, send the e-mail, or talk on the MSN. It can help somebody who are introversion to make more friends. Besides, through the computer network, we can get the new information, and do the homework quickly. Because of that, we can have more time to do other things which we want to do. We also can buy some things on the internet.
Though it is very convenient, it may harm our health. First, if we look at the computer for a long time, our eyesight may be injured. Second, the electromagnetic wave is not good for our body. Furthermore, person and person will become distant. After that, to sit on the chair to play computer for a long time, it may account us become fatter and fatter. Even if the computer have a lot of advantages, we may not use it too long, or it will make us become unhealthy.