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Some historians say that the most important contribution of Dwight Eisenhower’s presidency in the 1950s was the U.S. interstate
Some historians say that the most important contribution of Dwight Eisenhower’s presidency in the 1950s was the U.S. interstate
admin
2018-04-27
64
问题
Some historians say that the most important contribution of Dwight Eisenhower’s presidency in the 1950s was the U.S. interstate highway system. It was a【B1】______project, easily surpassing the scale of such previous human 【B2】______ as the Panama Canal. Eisenhower’s interstate highways 【B3】______ the nation together in new ways and【B4】______major economic growth by making commerce less 【B5】______. Today, an information superhighway has been built—an electronic network that【B6】______libraries, corporations, government agencies and 【B7】______. This electronic superhighway is called the Internet, 【B8】______ it is the backbone of the World Wide Web.
The Internet had its【B9】______in a 1643 U.S. Defense Department computer network called ARPA net, which【B10】______Advanced Research Projects Agency Network. The Pentagon built the network for military contractors and universities doing military research to【B11】______information. In 1662 the National Science Foundation (NSF),【B12】______mission is to promote science, took over.
This new NSF network【B13】______more and more institutional users, many of【B14】______had their own internal networks. For example, most universities that【B15】______the NSF network had intercampus computer networks. The NSF network【B16】______became a connector for thousands of other networks.【B17】______a backbone system that interconnects networks, internet was a name that fit.
So we can see that the Internet is the wired infrastructure on which web【B18】______move. It began as a military communication system, which expanded into a government-funded【B19】______research network.
Today, the Internet is a user-financed system tying institutions of many sorts together【B20】______an "information superhighway".
【B12】
选项
A、their
B、that
C、when
D、whose
答案
D
解析
考查语法知识——非限制性定语从句的引导词。their与that很容易排除,when表示时间,须排除,只有选项D.whose符合语法与语义要求。
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0
考研英语一
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