A. sixty B. ten C. thirty D. twenty
2. A new network system was set up to ____.
A. make computers cheaper
B. make itself keep on working all the time
C. break down the whole network
D. make computers large and expensive
3. At first the Internet was only used by ______.
A. the government B. universities
C. hospitals and banks D. schools
4. ______ made surfing the Internet more conve-nient.
A. Computers B. Scientists C. Software D. Information
5. Which of the following is true?
A. In the 1960s, computer networks worked well.
B. In the early 1970s, the Internet was easy to use.
C. Sending e-mail is now more popular among students than before.
D. Today its still not easy to get on-line.
答案见下一页
CBACC
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