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收起Many teachers worry about the effects of television on young people. According to studies, some children spend more time watching television than they spend in school. Because so much viewing, children may not be develop the habit of read and the ability to enjoy themselves. No one worries much about the radio program young people listen to, although radios can be very noise. Teachers also wonder about the effects of television commercials. In one year the average child will see 25,000 television commercials, all planned and written by grown-ups to make children to want things that they don't real need.