题目内容：
根据下面资料，回答题 Television
Television--the most pervasive and persuasive of modem technologies, marked by rapid changeand 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 bythe 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 asophisticated system of electronics, television provides the capability of converting an image ( focusedon 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 asa 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 non-broadcast television, which provides for the needsof individuals or specific interest groups through controlled transmission techniques.
Traditionally,television has been a medium of the masses. We are most familiar with broadcasttelevision because it has been with us for about thirty-seven years in a form similar to what existstoday. 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. Thesegiants of broadcasting have actually shaped not only television but our perception of it as well. We havecome to look upon the picture tube as a source of entertainment, placing our role in this dynamicmedium as the passive viewer.
What is the literal meaning of the word "television" ? A．Medium of the masses.
A．Medium of the masses.
B．Sight from a distance.
B．Sight from a distance.
C．Airwave transmission.
C．Airwave transmission.
D．Vehicle for communication.
D．Vehicle for communication.
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