Television can be (helpful) to those who carefully choose the programs they like to watch (them去掉) and harmful to those who watch it too much.Many people worry (about) that children or young people watch television too often.A survey (on) 300 youngsters in Shanghai last year showed that,(on) average,they spent half of their free time,that is,two and (a) half hours watching television and two-thirds of millions of Chinese viewers stayed up late to (watch) the opening ceremonies and other programs.And television is (quickly) taking the place of printed materials as the major (source) of news.
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