正弦波形初中英语阅读理解题二在线测试(附答案)_七年级英语_在线做题网

2020年12月16日发(作者：柯蘅)
初中英语阅读理解题二在线测试（附答案）_七年级英语_在线做题网
阅读理解2
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
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 (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
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。
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…u ntil句型，译为“直到90年代早期人们才有足够的软件
上网”。