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

Television—the most pervasive and persuasive of modern technologies, marked by rapid change and growth—is moving into a new era,

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问题     Television—the most pervasive and persuasive of modern technologies, marked by rapid change and growth—is moving into a new era, an era of extraordinary (1)_____ and versatility, which promises to reshape our lives and our world. It is an electronic revolution of sorts, made possible by the (2)_____ of television and computer technologies.
    The word "television", derived from its Greek (tele: distant) and Latin (vision: sight) roots, can (3)_____ be interpreted as sight from distance. Very simply (4)_____, it works in this (5)_____: through a sophisticated system of electronics, television provides the capability of (6)_____ an image (focused on a special photo-conductive plate within a camera) into electronic impulses, which can be sent through a wire of cable. These impulses, when fed into a (7)_____ (television set), can then be electronically (8)_____ into that same image.
    Television is (9)_____ just an electronic system, (10)_____. It is a means of expression, as well as a (11)_____ for communication, and as such becomes a powerful tool for reaching other human beings.
    The field of television can be divided into two (12)_____ determined by its means of transmission. First, there is broadcast television, which reaches the masses through broad-based airwave transmission of television (13)_____. Second, there is non-broadcast television, which provides for the needs of individuals or (14)_____ interest groups through controlled transmission techniques.
    Traditionally, television has been a (15)_____ of the masses. We are most familiar with broadcast television (16)_____ 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, for the most part, by the broadcast networks. ABC, NBC and CBS, who have been the (17)_____ purveyors of news, information, and entertainment. These giants of (18)_____ have actually shaped not only television but our perception of it as well. We have come to (19)_____ the picture tube as a source of entertainment, placing our role in this (20)_____ medium as the passive viewer.

选项 A、convert
B、converting
C、switch
D、switching
答案B
解析 本题的考点为动词的词义及语态辨析。空格处表达的意思是"把…转换成…"，所以convert"转换"符合文意，convert sth into sth为固定搭配；另外，介词of后面应用动词的动名词形式，即converting。因此，答案选项符合文意。switch"转换"，switch sth to sth意为"转换至…"，与文意不符。
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考研英语一

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