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据调查，儿童每周要看30到35个小时的电视节目，远远超过在校学习时间。大量的不适合儿童观看的节目，对儿童造成了不利影响。请结合实际以“No Television Day Campaign”为标题呼吁家长们在星期天关上电视机，帮助儿童远离电视。词数100左右。注意：文章开头已给出，但不计入总词数。 TV nowadays is very universal，and everyone has access to it. TV makes it possible to keep track of current events and the latest developments in the world. By watching TV, we can enrich our knowledge and broaden our hor甲、乙两城相距750千米．一辆汽车以每小时50千米的速度从甲城开往乙城，几小时后可以到达？