根据首字母填空。
We are all busy talking about and using the Internet (互联网), but how many of us know the h__1__
of the Internet?
Many people are surprised when they find that the I__2__ was set up in the 1960s. At that time,
computers were large and e__3__ . 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 e__4__ to be used by many different computers. If part of the network was not
working, information could be sent through a__5__ part. In this way computer network system would
keep on w__6__ all the time.
At f__7__ the Internet was only used by the government, but, in the early 1970s, universities, hospitals and banks were allowed to use it too. H__8__, computers were still very expensive and the Internet
was d__9__ to use. By the start of the 1990s, c__10__ 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 m__11__ of people use the Internet everyday. Sending e-mail is more and more p__12__ among students.
The Internet has now become one of the most important parts of people's life.
