2. 外语
  3. The Internet is a giant network of computers located al] over the world that communicate with each other. The Internet is an

The Internet is a giant network of computers located al] over the world that communicate with each other. The Internet is an

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问题     The Internet is a giant network of computers located al] over the world that communicate with each other.
    The Internet is an international collection of computer networks that all understand a standard system of addresses and commands,【S1】______together through backbone systems. It was started in 1959, when the U.S. Department of Defence established a nationwide network to connect a handful of universities and contractors. The【S2】______idea was to increase computing capacity that could be【S3】______by users in many locations and to find out what it would take for computer networks to survive a nuclear war or other【S4】______by providing multiple path between users. People on the ARPNET ( as this nationwide network was originally called) quickly discovered that they could【S5】______messages and conduct electronic  "conferences" with【S6】______colleagues for purposes that had nothing to do with the military industrial  complex. If somebody else had something interesting【S7】______on their computer, it was a simple matter to obtain a copy (assuming die owner did not【S8】______it).
    Over the years, additional networks joined which added access to more and more computers. The first international connections, to Norway and England, were added in 1973. Today thousands of networks and millions of computers are. connected to the【S9】______. It is growing【S10】______quickly that nobody can say exactly how many users "On the Net".
    The Internet is the largest repository of information which can provide very large network.

A) distant          B) adversary         C) exchange         D) protect  
E) universally      F) statistic         G) stored           H) connected
I) original         J) shared            K) disaster         L) assumption
M) Internet         N) so                O) peculiar
【S5】
选项
答案C
解析 此处在问：“ARPNET上的用户很快就发现他们可以与远距离的同事______消息”，根据上下文及Internet的特点选择exchange。
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大学英语四级

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