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最佳答案：最早是在英国出现的黑白无声电视机,后来出现了有声电视,再后来是出现了彩色的电视机,当时的彩色电视是用的专用频率,没有办法和黑白电视兼容的,后来开发出来能兼容黑白
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最佳答案：希望可以帮到你Watch TV: Good or Bad for students? TV is very important in our life. We
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最佳答案：Nowadays, television has become the most popular media of human kind. It’s also
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最佳答案：TV is very important in our life. We can get to know all kinds of events around
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最佳答案：After supper , I like to sit on the sofa and wait to watch my favourite TV progr
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最佳答案：Television, as a popular means of mass media, appeals to people for various reas
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最佳答案：Today,a growing number of commercial advertisements jump into TV programs,which