Comparisons were drawn between the development of television in the 20th century and the d

iffusion of printing in the 15th and 16th centuries. Yet much had 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 railway, and leading【C6】______through the telegraph, the telephone, radio, and motion pictures【C7】______the 20th-century world of the motor car and the air plane. Not everyone see 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】______view about its economic, political, social and cultural implications. "Benefits" have been weighed【C20】______ "harmful" outcomes. And generalizations have proved difficult.

【C1】

A．between

B．before

C．since

D．later