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(天線)facing the earth．Sometimes, it moves away from its orbit(軌道)，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（核） 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 3rd 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．

 

Answer 1

1.D

2.C

3.B

4.C

【解析】

試題分析：這篇短文講述衛(wèi)星的重要性以及行星的運(yùn)轉(zhuǎn)規(guī)則。衛(wèi)星在我們生活中非常重要，我們的天氣預(yù)報(bào)、互聯(lián)網(wǎng)、電視節(jié)目等都要依靠衛(wèi)星來傳輸信號(hào)，因此沒有衛(wèi)星的生活將會(huì)非常乏味而落后。

1.細(xì)節(jié)理解題。根據(jù)第一段For example, the information for weather forecasts is sent by satellite．可知A正確；Some satellites have cameras which take photographs of the Earth to show how clouds are moving．可知B正確；根據(jù)第三段第一句話We use satellites to send television pictures from one part of the world to another．可知C正確；而D項(xiàng)文中沒有提到，故選D。

2.細(xì)節(jié)理解題。根據(jù)第三段第三行This is because it is moving around the world at 11，000 kilometers an hour—exactly the same speed that the earth rotates．“這是因?yàn)樗�以一小時(shí)11000千米的速度繞著世界運(yùn)動(dòng)，和地球自轉(zhuǎn)的速度完全一樣�！笨芍�地球自轉(zhuǎn)的速度是一小時(shí)11000千米。故選C。

3.細(xì)節(jié)理解題根據(jù)第三段第二行Sometimes we can see a satellite in the sky and it seems to stay in the same place．“我們有時(shí)候看到天空中的行星好像待在同一個(gè)地方�！币约暗谒男蠥 satellite must orbit the Earth with its antennae(天線)facing the earth．“一個(gè)行星必須用它的天線面對(duì)著地球圍著地球飛行�！笨芍�和地球速度一樣是因?yàn)橐�待在軌道上的固定位置，故選B。

4.詞義猜測(cè)題。This指代上文提到的句子Sometimes we can see a satellite in the sky and it seems to stay in the same place．“我們有時(shí)候看到天空中的行星好像待在同一個(gè)地方�！苯忉屵@一現(xiàn)象的原因，故選C。

考點(diǎn)：科普類短文閱讀。