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 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 institutions of many sorts together __81__ an information superhighway。

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

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

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

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

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

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

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

　　69. A.and B.yet C.or D.while

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

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

　　72. A.exchange B.bypass C.switch D.interact

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