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  3. Some historians say that the most important contribution of Dwight Eisenhower’s presidency (总统任期) in the 1950s was the U. S. int

Some historians say that the most important contribution of Dwight Eisenhower’s presidency (总统任期) in the 1950s was the U. S. int

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问题     Some historians say that the most important contribution of Dwight Eisenhower’s presidency (总统任期) in the 1950s was the U. S. interstate highway system. It was a【C1】______ project, easily surpassing the scale of such previous human【C2】______ as the Panama Canal. Eisenhower’s interstate highways【C3】______ the nation together in new ways and【C4】______ major economic growth by making commerce less【C5】______ Today, an information superhighway has been built—an electronic network that【C6】______ libraries, corporations, government agencies and【C7】______ . This electronic superhighway is called the Internet,【C8】______ it is the backbone (主干) of the World Wide Web.
    The Internet had its【C9】______ in a 1969 U. S. Defense Department computer network called ARPAnet, which【C10】______ Advanced Research Projects Agency Network. The Pentagon built the network for military contractors and universities doing military research to【C11】______ information. In 1983 the National Science Foundation (NSF) ,【C12】______ mission is to promote science, took over.
    This new NSF network【C13】______ more and more institutional users, many of【C14】______ had their own internal networks. For example, most universities that【C15】______ the NSF network had intra-campus computer networks. The NSF network【C16】______ became a connector for thousands of other networks.【C17】______ a backbone system that interconnects networks, Internet was a name that fit.
    So we can see that the Internet is the wired infrastructure (基础设施) on which web【C18】______ move. It began as a military communication system, which expanded into a government-funded【C19】______ research network.
    Today, the Internet is a user-financed system tying institutions of many sorts together【C20】______ an " information superhighway".
【C13】
选项 A、expanded
B、contracted
C、attracted
D、extended
答案C
解析 动词辨义。根据上下文可以得出句意为：这种新的NSF网络吸引了越来越多的机构用户。而且所选择的动词需要能够和后面的宾语users搭配，所以选择C项attracted“吸引”，attracted users意为“吸引客户”。A项expanded意为“扩张”，B项contracted意为“签约；缩小”，D项extended意为“延伸，伸展”。这三个动词都不能和后面的名词users搭配，故均可以排除。
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