题目内容

We are all busy talking about and using the Internet, but how many of us know about 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’ t work well. If one computer in the network broke down, then the whole network stopped. So a new network system(系统) 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 the 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 expensive and the Internet was difficult to use. By the start of the 1990s, computers become cheaper and easier to use. Scientists had also developed software(软件) that made “surfing(浏览)” the Internet more convenient(方便).

Today it is easy to get on-line 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 ______ years.

A. about 40 B. less than 30

C. more than 45 D. nearly 35

2.Scientists set up a new network system to ______.

A. make the computer cheaper

B. make the system work well

C. make the computer go well

D. develop new softwares

3.The Internet was widely used in the ______.

A.1960s B.1970s C.1980s D.1990s

4.The underlined words “get on-line” in Chinese mean ______.

A.上机 B.上网 C.接线 D.买电脑

5.Which of the following is NOT true?

A. In the 1960s computer network system went wrong easily.

B. Computers are much cheaper than before.

C. Today the Internet is used everywhere.

D. People had enough softwares to get on-line fifteen years ago.

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Many animals hide to stay alive. They hide in many ways. Some animals hide in leaves; some animals hide in snow. Usually their colors or shapes help protect them. It’s hard to see an Arctic bear in snow. Its white fur helps protect it. Chameleons(变色龙) can hide by changing colors. Their skin turns the same color as what is around them. Some chameleons can change colors in five minutes.

Many animals try to look bigger than they are to stay alive. Some animals can make other animals think they are very big. If they look very big, animals that are looking for food will run away. Bears can walk on two legs. They look very, very scary. Some animals will run away from them.

Many animals try to stay around other animals. This helps them stay alive. Zebras stay close together so that they can help each other look out of danger. Seeing many stripes at once can also confuse animals that want to eat them. Some birds stay in a circle, each toward a different direction. In this way they can also help each other stay alive by looking around for animals that many want to eat one of them.

1.Animals have ways to stay alive. How many of them are mentioned in the passage ?

A. One B. Two C. Three D. Five

2.Why do animals hide ?

A. Because they like to play hide-and-seek.

B. Because they are shy.

C. Because they want to catch other.

D. Because they want to protect themselves.

3.How do Chameleons hide ?

A. They change colors.

B. They change shapes.

C. They hide in snow.

D. They hide in leaves.

4.How do zebras hide ?

A. Become good friends.

B. Talk to each other.

C. Help each other look out for danger.

D. Eat and play together.

5.Why do animals try to look bigger than they are ?

A. They want other animals to run away from them.

B. They want other animals to follow them.

C. They want other animals to see them.

D. They want other animals to like them.

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