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 and Latin 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 into electronic impulses, which can be sent through a wire or cable. These impulses, when fed into a receiver , 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.
备考战略:全面提升雅思阅读
雅思难点应对策略
雅思阅读成绩总是上不去的原因剖析
雅思一个月复习备考计划--适合基础较好的烤鸭
解析三种不同雅思阅读方法
雅思阅读机经的使用方法
雅思阅读的猜词技巧
雅思阅读背景知识介绍:数字13为什么不吉利
提高雅思考试阅读分数的诀窍
提高雅思阅读成绩 功在平时
雅思阅读答题注意事项
雅思阅读的做题顺序有讲究
盘点雅思阅读技巧
雅思阅读技巧小贴士
雅思阅读判断题的一种解题思路
如何做好雅思填空题?
剖析雅思阅读Heading题的段落结构
提高雅思阅读 扩充词汇量才是王道
备考雅思阅读的注意事项
雅思阅读实用临场技巧
怎样做好雅思段落与信息匹配题
雅思阅读备考误区
你知道雅思阅读备考的潜规则吗?
解析雅思阅读中的词汇替换
雅思阅读:判断题的解题思路
一个月时间如何提升雅思阅读成绩?
盘点雅思阅读考试的坏习惯
用西方思维来应对雅思阅读
雅思阅读高分技巧
雅思阅读summary题技巧
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