Some historian 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 __62__ project, easily surpassing the scale of such previous human __63__ as the Panama Canal. Eisenhower’s interstate highways __64__ the nation together in new ways and __65__ major economic growth by making commerce less __66__. Today, an information superhighway has been built—an electronic network that __67__ libraries, corporations, government agencies and __68__. This electronic superhighway is called the Internet, __69__ it is the backbone (主干) of the World Wide Web.
    The Internet had its __70__ in a 1969 U.S. Defense Department computer network called ARPAnet, which __71__ Advanced Research Projects Agency Network. The Pentagon built the network for military contractors and universities doing military research to __72__ information. In 1983 the National Science Foundation (NSF), __73__ mission is to promote science, took over.
    This new NSF network __74__ more and more institutional users, may of __75__ had their own internal networks. For example, most universities that __76__ the NSF network had intracampus computer networks. The NSF network __77__ became a connector for thousands of other networks. __78__ 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 __79__ move. It began as a military communication system, which expanded into a government-funded __80__ research network.
    Today, the Internet is a user-financed system tying intuitions of many sorts together __81__ an “information superhighway.”