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  3. Technological changes brought dramatic new options to Americans living in the 1990s. During this decade new forms of entertainme

Technological changes brought dramatic new options to Americans living in the 1990s. During this decade new forms of entertainme

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问题     Technological changes brought dramatic new options to Americans living in the 1990s. During this decade new forms of entertainment, commerce, research, and communication became commonplace in the U. S. The driving force behind much of this change was a( n)【C1】______ popularly known as the Internet.
    The Internet was developed during the 1970s by the Department of Defense. In the case of an attack, military advisers suggested the【C2】______ of being able to operate one computer from another terminal- In the early days, the Internet was used mainly by scientists to communicate with other scientists. The Internet【C3】______ under government control until 1984.
    One early problem faced by Internet users was speed. Phone lines could only transmit information at a【C4】______ rate. The development of fiber-optic (光纤) cables allowed for billions of bits of information to be received every minute. Companies like Intel developed faster microprocessors, so personal computers could process the【C5】______ signals at a more rapid rate.
    In the early 1990s, the World Wide Web was developed, in large part, for【C6】______ purposes. Corporations created home pages where they could place text and graphics to sell products. Soon airline tickets, hotel【C7】______ , and even cars and homes could be purchased online. Universities【C8】______ research data on the Internet, so students could find【C9】______ information without leaving their dormitories. Companies soon discovered that work could be done at home and【C10】______ online, so a whole new class of telecommuters began to earn a living from home offices unshaven and wearing pajamas (睡衣).
A) advantage I) maintained
B) commercial J) occupations
C) conservation K) posted
D) equipped L) remained
E) incoming M) reservations
F) innovation N) submitted
G) limited O) valuable H) local
【C1】
选项
答案F
解析 名词辨析题。空格前为冠词a(n)，空格后为过去分词短语popularly known as the Internet作后置定语修饰该空，因此应填入可数名词单数。本段第一句指出，技术变革为美国人带来了巨大的全新选择，而空格所在句指出，这一变革背后的推动力是众所周知的______因特网。由此可知，因特网在20世纪90年代的美国是新事物，故填入F)innovation“新事物，创新”。备选名词中，首先排除复数名词J)occupations和M)reservations，而A)advantage、B)commercial、C)conservation和H)local都不能用来指称the Internet，故均排除。
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