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  3. Television that most pervasion and persuasive of modern technologies, marked by rapid change and growth is moving into a new era

Television that most pervasion and persuasive of modern technologies, marked by rapid change and growth is moving into a new era

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问题     Television that most pervasion and persuasive of modern technologies, marked by rapid change and growth is moving into a new era, an era of extraordinary sophistication and versatility, which promises to reshape our lives and our world. It is an electronic revolution of sorts, made possible by the marriage of television and computer technologies.
    Very simply put, television works in this way: through a sophisticated system of electronics, television provides the capability of converting an image into electronic impulses,which can be sent through a wire or cable. These impulses, when fed into a receiver (television set),can then be electronically reconstituted into that same image.
    The field of television can be divided into two categories determined by its means of transmission. First, there is broadcast television, which reaches the masses through broad-based airwave transmission of television signals. Second, there is one broadcast television, which provides for the needs of individuals or specific interest groups through controlled transmission techniques.
    Traditionally, we are most familiar with broadcast television; ABC, NBC and CBS have been the major purveyors of news,information, and entertainment. But now, in addition, we have CNN, Cable News Network, the first global TV news company. With its advent, the very definition of news was rewritten from something that has happened to something that is happening at the very moment you are hearing of it. In 1991 ,one of the most eventful years of this century, the world witnessed the dramatic and transforming impact of live televised news coverage on the latest developments. For turning viewers in 150 countries into instant witnesses of history, whereby influencing the dynamic of events, Robert Edward Turner president of CNN, was Time’s Man of the Year for 1991.
With what topic is the passage primarily concerned? (  )
选项 A、Recent changes in modern technology.
B、The marriage of broadcasting giants.
C、The role of television in today’s society.
D、The content of broadcast television programs.
答案C
解析 主旨大意题。文章第一段讲述了电视已经普及了人们的生活。第二、三段提到电视的分类及运作程序。可见文章都是围绕电视来展开的，谈论电视在现代生活中的重要作用。
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