2. 外语
  3. The Internet has a history of ______ years. Computers become cheaper and easier to use in the ______.

The Internet has a history of ______ years. Computers become cheaper and easier to use in the ______.

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问题 The Internet has a history of ______ years.
Computers become cheaper and easier to use in the ______.
选项 A、1960s
B、1970s
C、1990s
答案C
解析 从文中第二段倒数第一句可得出答案。
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