2. 外语
  3. The Internet is a【B1】______network of computers【B2】______all over the world that communicate with each other. The Internet i

The Internet is a【B1】______network of computers【B2】______all over the world that communicate with each other. The Internet i

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问题     The Internet is a【B1】______network of computers【B2】______all over the world that communicate with each other.
    The Internet is an international collection of computer networks that all understand a【B3】______  system of addresses and commands, connected together through backbone systems. It was started in 1969, when the U.S. Department of Defense【B4】______a nationwide network to connect a handful of universities and contractors. The【B5】______idea was to increase computing【B6】______that could be shared by users in many locations and to find out what it would take for computer networks to 【B7】______ a nuclear war or other disaster by providing multiple paths between users. People on the ARPNET (as this nationwide network was originally called) quickly discovered that they could【B8】______  messages and conduct electronic "conferences" with distant colleagues for purposes that had nothing to do with the military industrial complex. 【B9】______
  【B10】______The first international connections, to Norway and England, were added in 1973. Today thousands of networks and millions of computers are connected to the Internet. It is growing so quickly that nobody can say exactly how many users "On the Net".
  【B11】______.
【B3】
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