We are all busy talking about and using the Internet (互联网), but how many of us know the history of the Internet? Many people are surprised when they find that the Internet was set up in the 1960s. At that time, computers were large and expensive. Computer networks (网络) didn"t work well. If one computer in the network broke 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 could be sent through another part. In this way computer network system would keep on working all the time.
At first the Internet was only used by the government, but, in the early 1970s, universities, hospitals and banks were allowed to use it too. However, computers were still very expensive and the Internet was difficult to use. By the start of the 1990s, computers became cheaper and easier to use. Scientists had also developed software that made "surfing" (浏览) the Internet more convenient.
Today it is easy to get on-line (上网) and it is said that millions of people use the Internet everyday. Sending e-mail is more and more popular among students.
The Internet has now become one of the most important parts of people"s life.
讲解：
1.第二段开头讲互联网是在60年代建立的，故至今历史已超过30年。
2.文中第二段阐明计算机网络工作状况不好(didn"t work well)。
3.第三段中说明大学、医院等都被允许使用电脑，然而，计算机仍然很贵，并且网络很难使用。
4.由第三段最后几句介绍可知，到90年代，计算机便宜且好用。科学家也发展了软件使网上浏览更方便。而本题干用了not…until句型，译为"直到90年代早期人们才有足够的软件上网"。
判断下列句子是否符合短文内容，符合的用"T"表示，不符合的用 "F"表示。
l. The Internet has a history of less than thirty years. (本题分数：3分)
2. In the 1960s computer networks went wrong easily. (本题分数：3分)
3. Computers become cheaper so that many hospitals and banks were allowed to use them. (本题分数：3分)
4. People didn‘t have enough software to get on-line conveniently until the early 1990s. (本题分数：3分)
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