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美国电视新闻业从20世纪50年代诞生以来,大致经历了这样几个发展阶段:50—70年代,三大网新闻初现和发展时期;70—80年代,电视新闻发展的黄金时期;80—90年代,CNN、FOX等的出现,对传统三大电视网新闻形成了一定冲击;90年代至今,随着数字电视、互动电视以及网络电视的发展,美国电
Since the birth of the American television news industry in the 1950s, it has undergone several stages of development: the beginning of the news and the development of the three major networks in the 1950s and the 1970s; the golden period of the development of television news in the 1970s and 1980s; In the 1990s, the advent of CNN, FOX, etc. exerted a certain impact on the news of the three major traditional television networks. Since the 1990s, with the development of digital television, interactive television and network television,