Comparisons were drawn between the development of television in the 20th century and the diffusion of printing in the 15th and 1

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问题     Comparisons were drawn between the development of television in the 20th century and the diffusion of printing in the 15th and 16th centuries. Yet much has happened【C1】______. As was discussed before , it was not【C2】______the 19th century that the newspaper became the dominant pre-electronic【C3】______, following in the wake of the pamphlet and the book and in the【C4】______of the periodical. It was during the same time that the communications revolution【C5】______up, beginning with transport, the railways and leading【C6】______through the telegraph, the telephone, radio and motion pictures【C7】______the 20th century world of the motor car and the airplane. Not everyone sees that process in【C8】______. It is important to do so.
    It is generally recognized, 【C9】______, that the introduction of the computer in the early 20th century, 【C10】______by the invention of the integrated circuit during the 1960s, radically changed the process, 【C11】______its impact on the media was not immediately【C12】______. As time went by, computers became smaller and more powerful, and they became personal too, as well as【C13】______, with display becoming sharper and storage【C14】______increasing. They were thought of, like people,【C15】______generations, with the distance between generations much【C16】______.
    It was within the computer age that the term information society began to be widely used to describe the【C17】______within which we now live. The communications revolution has【C18】______both work and leisure and how we think and feel both about place and time, but there have been【C19】______views about its economic, political, social and cultural implications. Benefits have been weighed【C20】______harmful outcomes. And generalizations have proved difficult.
【C6】

选项 A、on
B、out
C、over
D、off

答案A

解析 on表示“进展,向前,继续活动”,是一个持续的状态。短语lead off是“开始”的意思,与句意不符。
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