来自：查字典高考网 2014-12-25
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 Greekand Latinroots， 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 imageinto 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.
【托福写作背诵文选全集（7）】相关文章：
[标签：海外留学,语言考试,托福,,]
北京新闻 2019 5.9万余北京考生今日高考 语文试题鼓励创造性阅读与表达
张雪峰高考志愿填报指南 第15集 高考填报志愿，想学电子信息类专业，推荐报这六所高校，不出错
创艺第二届：2019届高考录取表彰大会暨“核桃音乐节”合影——你只管努力，剩下的交给创艺
高考阅卷名师给考生的高考作文密训课 第4集 高考作文审题实操方法精讲（二）
高考阅卷名师给考生的高考作文密训课 第5集 高考作文审题实操方法精讲（三）
探秘历史 第二季 第233集 考英语用来睡觉，结果仍是高考状元，如今她怎么样了？
爆笑班主任 第一季 第220集 高考前最后一只视频，山东王老师揭秘高考的秘密
衍声高考琴行2019高本硕学生暑假音乐会 张俊瀚《陕北民歌主题变奏曲》《阿根廷舞曲》第三乐章
amc传媒音乐影像 第一季 第598集 西安原创乐队走进英泰青卓 用音乐助力高考学子
