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2011年6月大学英语六级口训练文章(3)

来源:考试吧 编辑:beck   可可英语APP下载 |  可可官方微信:ikekenet

  Television

  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 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 (visio: 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 plate within a camera) 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.

  Television is more than just an electronic 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 reaches the masses through broad-based airwave transmission of television signals. Second, there is nonbroadcast 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. We are most familiar with broadcast television because 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 major purveyors of news, information, and entertainment. These giants of broadcasting have actually shaped not only television but our perception of it 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.

重点单词   查看全部解释    
suitable ['sju:təbl]

想一想再看

adj. 合适的,适宜的
adv. 合适

 
extraordinary [iks'trɔ:dnri]

想一想再看

adj. 非凡的,特别的,特派的

联想记忆
passive ['pæsiv]

想一想再看

adj. 被动的,消极的
n. 被动性

联想记忆
assumption [ə'sʌmpʃən]

想一想再看

n. 假定,设想,担任(职责等), 假装

联想记忆
supernatural [.sju:pə'nætʃərəl]

想一想再看

adj. 超自然的,神奇的

联想记忆
community [kə'mju:niti]

想一想再看

n. 社区,社会,团体,共同体,公众,[生]群落

联想记忆
eventually [i'ventjuəli]

想一想再看

adv. 终于,最后

 
electronically [i,lek'trɔnikli]

想一想再看

adv. 电子地

 
specific [spi'sifik]

想一想再看

adj. 特殊的,明确的,具有特效的
n. 特

联想记忆
revolution [.revə'lu:ʃən]

想一想再看

n. 革命,旋转,转数

联想记忆


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