题目内容
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 (vision. sight) roots, can literally be interpreted as sight from 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 photo-conductive plate within a camera) into electronic impulses, which can be sent through a wire of 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 broadbased airwave transmission of television signals. Second, there is non-broadcast 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.
What is the literal meaning of the word "television"？
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【C3】
The urge to explore is innate in Man.【C1】______ his imagination roams, Man seeks also to go. A large part of history is concerned【C2】______ the exploration of the world in which we live.【C3】 men have set out with amazing courage and fortitude to【C4】______ into unknown regions and lands. They crossed the sea in【C5】______ boats,traversed continents, scaled mountains, fought their way through jungles and swamps, endured【C6】______ hardships — all to explore, to see what had not yet been seen, to make【C7】______ the unknown. Nor did Man confine his movements 【C8】______ the surface of land and sea. With kites, balloons and aircraft he left the ground and to【C9】______ through the lower atmosphere. Now outer space receives his attention.
The hard way to answer the question, why should Man bother about【C10】______ space, is to attempt to list the specific practical benefits【C11】______ result. One knows, from past experience in other areas, that Man will【C12】______ see and discover new things in space. That will increase our store of scientific knowledge, and this new knowledge will find its way 【C13】______ valuable practical uses.【C14】______ about Man himself, from his experience in space, and from the effects of space and the space flight【C15】______ environment, will be invaluable. The new techniques developed to carry out the exploration of space, and to keep men【C16】______ in space, will inevitably be put into valuable practical uses in everyday life. The areas that will benefit are.【C17】______ .They include communications, generation, transportation and travel, food production,【C18】______ of resources, navigation, human comfort and welfare, biology and medicine, materials, fuels and many others.【C19】______ to state specifically just what the practical outcomes will be is【C20】______ impossible.
【C1】
听力原文： A senator is urging President Clinton not to end the trade restriction against Vietnam. (28[C])Republican Senator Bob Smith says the restrictions should continue until Vietnam provides more information about Americans missing from the Vietnam War. President Clinton must decide by next week if he will order the restrictions continued for another year. On Tuesday, the Defense Department released some documents from the former Soviet Union that appeared (29[B])to show that North Vietnam held hundreds more of American war prisoners than it had admitted. Defense officials say the documents must be examined closely.
According to Senator Smith, how will the trade restrictions against Vietnam end？
【C14】
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