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 owm 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.”

62. A．concise C．massive B．radical D．trivial

63. A．behaviors C．inventions B．endeavors D．elements

64. A．packed C．suppressed B．stuck D．bound

65. A．facilitated C．mobilized B．modified D．terminated

66. A．competitive C．exclusive B．comparative D．expensive

67. A．merges C．relays B．connects D．unifies

68. A．figures C．individuals B．personalities D．humans

69. A．and C．or B．yet D．while

70. A．samples C．origins B．sources D．precedents

71. A．stood by C．stood against B．stood for D．stood over