The media are offering us a lot of good news，but it is now taking up too much of our time.Many teenagers are spending so much time in using computers that it seems computers are their whole life.Their life belongs to the media rather than themselves. The media can prevent people getting in touch with the nature.They understand the outside world by surfing the Internet and watching TV.Except for that，more and more people are having cellphones which can help them obtain information they want.Because of the information technology，less people choose laggard(落后的) information tools，such as newspapers and books.For them it is easy to understand the world by media.What is more，

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