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  3. Television—that most attractive modern technology, marked by rapid change and growth—is moving into a new era which promises to

Television—that most attractive modern technology, marked by rapid change and growth—is moving into a new era which promises to

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问题      Television—that most attractive modern technology, marked by rapid change and growth—is moving into a new era 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.
    The word "television" can literally be interpreted as sight from a distance. Very simply put, it works in this way: through a complete 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 reconstructed into that same image.
    Television is more than just an electronics system, however. It is a means of expression, as well as a vehicle for communication, and as such becomes a powerful tool for reaching other human beings.
    The field of television can be divided into two types. First, there is broadcast television, which reaches the masses through broad-based airwave transmission of television signals. Second, there is non-broadcast television, which provides for the needs of individuals or specific interest groups through controlled transmission techniques.
    Traditionally, television has been a medium of the masses. It has been with us for about thirty- seven years in a form similar to what exists today. During those years, it has been controlled mostly by the broadcast networks, ABC, NBC and CBS, who have been the major suppliers of news, information, and entertainment. These giants of broadcasting have actually not only shaped television as a source of entertainment, but placed our role in this active medium as the passive viewer.
What is the topic of the passage?
选项 A、The role of television in today’s society.
B、The marriage of broadcasting giants.
C、Recent changes in modern technology.
D、The content of broadcast television programs.
答案A
解析 本题为主旨归纳题。文章开篇就提到电视将走进一个新时代，它将改变我们的生活和我们的世界。接下来，又从电视工作原理、电视对人们的意义、电视节目的传输方式以及电视广播公司等几方面讲述了电视在当今社会所扮演的角色。
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