2. 外语
  3. Television—that most pervasive(遍布的)and persuasive of modern of modern technologies, marked by rapid change and growth — is movin

Television—that most pervasive(遍布的)and persuasive of modern of modern technologies, marked by rapid change and growth — is movin

admin2013-02-16  85
问题     Television—that most pervasive(遍布的)and persuasive of modern of modern technologies, marked by rapid change and growth — is moving into a new era, and 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.
    The word "television", derived from its Greek(tele: distant)and Latin(vision: sight)roots, can literally be interpreted as sight from a distance. Very simply put, it works in this way; through a sophisticated system of electronics, television provides the capability of converting an image(focused on a special photoconductive(光电导的)plate within a camera)into electronice impulses, which can be sent through a wire or a cable. These impulses when fed into a receiver(television set), can then be electronically reconstituted 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 categories determined by its means of transmission. First, there is broadcast television, which reached the masses through broad-based airwave transmission of television signals. Second, there is non-broadcast television, which provided for the needs of individuals or specific interest groups through controlled transmission techniques.
    Traditionally, television has been a medium of the masses. We are most familiar with broadcast television because it has been with us for 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 major purveyors(传播者)of the news, information and entertainment. These giants of broadcasting have not only shaped television but our perception(感觉)as well. We have come to look upon the picture tube as a source of entertainment, placing our role in this dynamic medium as the passive viewer.
Which of the following is NOT mentioned in the passage as a function of electronics in television transmissions?
选项 A、the conversion of image into electronic impulses
B、the sending of impulses through a wire cable
C、the changing of one image into another image
D、the feeding of impulses into a receiver
答案C
解析 本题为事实细节题。文中第二段对电视传输的描述可知，电视将图像转换成电子脉冲，通过电线或电缆传输电子脉冲，通过接收器，将电子脉冲转换成原来的图像。A、B和D选项均为文章细节内容。文中说转换成原来的图像，而非另外的图像，因此，C选项与文员意思不符。所以，C选项为正确选项。
转载请注明原文地址:https://kaotiyun.com/show/dLmO777K
0

考博英语

相关试题推荐
随机试题
最新回复(0)