根据短文内容，判断下列句子正（A ）误 ( B ) 。

     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.

( )l. The Internet has a history of less than thirty years.                               

( )2. In the 1960s computer networks went wrong easily.                                   

( )3. Computers become cheaper so that many hospitals and banks were allowed to use them  

( )4. People didn't have enough software to get on-line conveniently until the early 1990s.

( )5. The Internet has now become one of the most unimportant parts of people's life.