题目

阅读下面短文，用括号内所给动词的适当形式填空 (必要时可加情态动词或助动词)。 Computer are very popular these days. People are talking about and using the Internet everywhere, but how many of us__1__ (know) the history of the Internet? Many people are surprised when they find that the Internet __2___(set )up（建立）in the 1960s. At that time computers were large and expensive. Computer network(网络)__3___(not work) well. If one computer in the networks __4___(break) down, then the whole network stopped. So a new network system had to be set up. It should be good enough to be used by many different computers. If part of the network was not working, information__5___(send) through another part. In this way computer network system would keep on__6___(work) well all the time. In the 1970s, computers were still expensive and the Internet was difficult__7___(use). Today it’s easy to get on line and it__8___(say) that millions of people use the Internet every day. ___9___( send) E -mail is more and more popular among students. The Internet_10__(become) one of the most important parts of people’s life already. 答案： 1. know.      2. was set.     3. didn’t work  4. broke      5. could be sent 6. working    7. to use.      8. is said       9. sending    10. has become

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