题目内容：

We are all busy talking about and using the internet. 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 1960’. At that time, computers were large and expensive. Computer networks 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 one part of the network was not working , information could be sent through another part. In this way computer network system could keep on working all the time.

At first the internet was only used it, too. However, computers were still very expensive and the internet was difficult to use. By the start of the 1990’s, computers were still very expensive and the internet was difficult to use. By the start of the 1990’s, computers had become cheaper and easier to use. Scientists had also developed software that made “surfing “ the internet more convenient.

Today it is easy to get online and it is said that millions of people use the internet every day. 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.

1.The Internet has a history of more than       years.

A. ten          B. twenty         C. forty          D. sixty

2.A new network system was set up to       .

A. make computers cheaper

B. make computers expensive

C. make itself keep on working all the time

D. make computers large

3.At first the Internet was only used by       .

A. the government       B. universities      C. hospitals        D. schools

4.What does “convenient” mean in the passage?

A. 便宜的      B. 昂贵的     C. 方便的       D.困难的

5.Today       than before.

A. fewer people are using computers

B. it is more difficult to get online

C. sending e-mail is more popular

D. computers are more expensive