Question

Satellites are an important part of our ordinary lives．For example, the information for weather forecasts is sent by satellite．Some satellites have cameras which take photographs of the Earth to show how clouds are moving．Satellites are also used to connect our international phone calls．

Computer connections of the World Wide Web and Internet also use satellites. Many of our TV programs come to US through satellites．Airplane pilots also sometimes use a satellite to help them find their exact location．

We use satellites to send television pictures from one part of the world to another．They are usually 35，880 kilometers above the equator．Sometimes we can see a satellite in the sky and it seems to stay in the same place．This is because it is moving around the world at 11，000 kilometers an hour—exactly the same speed that the earth rotates．A satellite must orbit the Earth with its antennae(天线)facing the earth．Sometimes, it moves away from its orbit，So there are little rockets on it which are used to put the satellite back in the right position．This usually happens about every five or six days．

Space is not empty! Every week, more and more satellites are sent into space to orbit the Earth．A satellite usually works for about 10-12 years．Satellites which are broken are sometimes repaired by astronauts or sometimes brought back to Earth to be repaired．Often，very old or broken satellites are left in space to orbit the Earth for a very long time．This is very serious because some satellites use nuclear power and they can crash into each other．

1.Which of the following is NOT done by satellites according to the passage?

A．Sending information for weather forecast

B．Taking photographs of the Earth

C．Sending TV pictures

D．Providing food for airplane pilots

2.What’s the speed the earth rotates at?

A．35,880 kilometers per hour．     B．335,880 kilometers per hour

C．11,000 kilometers per hour．     D．110,000 kilometers per hour

3.Why does the satellite move around the world at the same speed as the Earth rotates?

A．In order to take photographs

B．In order to stay in a certain position in the orbit

C．In order to move away from its orbit

D．In order to send television pictures．

4.What does the underlined word “This” in the 3^rd paragraph refer to?

A．A satellite

B．A little rocket

C．A satellite seems to stay in the same place in the sky

D．The satellite puts the rockets in the right position．

5.Which is true of satellites?

A．A satellite usually works for about 10-12 years．

B．Every time a satellite gets broken，it is brought back to the Earth to be repaired．

C．A broken satellite is never left in space

D．They often crash into each other．

 

Answer 1

【答案】

 

1.D

2.C

3.B

4.C

5.A

【解析】

试题分析：文章介绍了卫星的作用，和卫星在太空运行的情况，包括运行的速度，卫星的工作年限和卫星出故障的处理办法。

1.细节题：从第一段的句子：the information for weather forecasts is sent by satellite．Some satellites have cameras which take photographs of the Earth to show how clouds are moving．可知卫星可以帮助预测天气，和拍地球的照片，从第二段的句子：Many of our TV programs come to US through satellites．可知卫星可以用来发送电视图像。没有说可以提供飞机飞行员的图画，选D

2.细节题：从第三段的句子：This is because it is moving around the world at 11，000 kilometers an hour—exactly the same speed that the earth rotates．可知卫星的速度的是每小时11，000公里。选C

3.细节题：从第三段的句子；Sometimes we can see a satellite in the sky and it seems to stay in the same place．可知卫星的速度和地球的相似是想在某个特定的地方，选B

4.猜词题：上文说卫星好像在同一个地方，后面的句子解释这是因为卫星的速度和地球的相似。所以这个this指的是“卫星好像在同一个地方”，选C

5.细节题：从最后一段的句子：A satellite usually works for about 10-12 years．可知一个卫星可以工作10-12年。选A

考点：考查科普类短文