阅读下列短文,从各小题所给的A、B、C、D四个选项中选出一个能回答所提问题或完成所给句子的最佳选项。

A

Years ago, as we know, zoos kept animals in cages. Cages made it easy for visitors to see the animals, but a small cage is not a good place for an animal to live in.

Today animals live in open areas. There are usually plants and a little lake around, like the animals' habitats. Visitors usually stay in the bus to see the animals outside.

Zoos help to protect all kinds of animals. They protect animals in the zoo as well as animals in the wild. How do they do this? Zoos tell people how animals live in the wild and how to help protect their environment.

The number of many kinds of plants and animals is becoming smaller and smaller. Mammoths, which are related with Asia elephants, are now extinct(已灭绝的.Scientists say that 74 different kinds of living things are disappearing a day!

Zoos are working together to help animals-our friends.

1.In the past, zoos kept animals in cages so that people can ________.

A. protect them B. see them better

C. feed them D. save them

2.Today, zoos keep animals ________ .

A. in open areas B. in bigger cages

C. in smaller cages D. in the buses

3.To protect animals, zoos ________.

A. are trying to keep all kinds of animals

B. are trying to free the animals

C. tell people more about animals

D. want people to feed the animals

4. A mammoth is a kind of ________ that has gone extinct.

A. plant B. bird

C. animal D. tree

5. An animal or a plant that is going extinct________ .

A. has more and more living members

B. comes into this world soon

C. becomes very dangerous

D. has fewer and fewer living member

读短文,根据短文内容选择最佳答案.

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 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 software

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 software to get on-line thirty years ago.

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