Comparisons were drawn between the development of television in the 2Oth century and the d

iffusion 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 revolutio【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.

【C1】

A．between

B．before

C．since

D．later