高一英语阅读理解专项练习：说明文类

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说明文类

Water goes around and around Earth in a never ending journey called the water cycle（循环）. The sun heats up lakes, oceans, and other wet places on Earth. When the water gets warm enough, it changes into vapour. Plants also give off lots of water vapour. Some of this water vapour cools off high in the sky and becomes clouds. Then it falls back to Earth in a new place as rain or snow. This cycle happens over and over again.

The ground can absorb water like a sponge (海绵). If you could see this groundwater, it wouldn‟t look like a lake or river. The groundwater is mixed in with the rocks and sand that lie in layers(层) below Earth‟s surface.

Groundwater moves along slowly. How slowly? Maybe 1.5 kilometres in one century. Some of this water has been underground for thousands of years. And once groundwater is pumped out of the ground from a deep well（井） by people, it may take hundreds of years for another water to take its place. 35.In which order does water go around Earth?

a .Fall down as rain or snow. b. Heated up by the sun on lakes, oceans and other wet places. c. Cool off high in the sky. d. Form clouds. e. Change into vapour. A. dacbe B. becda C. caebd D. bceda 36. The groundwater seems to________.

A. be just on the ground B. be pure water like that in a lake or river C. exist in rocks and sand D. flow along like rivers or streams

37. The underlined word “pumped” in the passage can be replaced by________.

A. run B. pushed C. drawn D. picked 38. What conclusion（结论） can we draw from the passage?

A. Groundwater can be quickly replaced by other water once pumped out. B. Groundwater is very valuable.

C. Groundwater has nothing to do with human beings.

D. Groundwater travel in an unknown way. 1-4 BCCB



(II) ★★★

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 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． 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． 1-5 DCBCA

(III) ★★★

Cancer researchers urged people on Wednesday to take more vitamin D to lower risk of cancer, saying studies showed a clear link. “Our suggestion is for people to increase their intake (吸入，摄入), through diet or a vitamin supplement,” Dr. Cedric Garland said in a telephone interview.

Garland's research team reviewed 63 studies, including several large long-term ones, on the relationship between vitamin D and certain types of cancer worldwide between 1966 and 2004. “There's nothing that has this ability to prevent cancer,” he said, urging governments and public health officials to do more to fortify (增强) foods with vitamin D. Garland is part of a University of California at San Diego Moores Cancer Center team that published its findings this week online in the American Journal of Public Health. Vitamin D is found in milk, as well as in some fortified orange juice, yogurt and cheeses, usually at around 100 international units（IU）a serving. “People might want to consider a vitamin supplement to raise their intake to 1000 IUs per day” Garland said, adding that it was well within the safety guidelines established by the National Academy of Sciences.

The authors said that taking more vitamin D could be especially important for people living in northern areas, which receive less vitamin D from sunshine.

“African Americans, who don't produce as much of the vitamin because of their skin colour, could also benefit significantly from a higher intake,” the authors said.

1．According to the passage, people are advised to take more Vitamin D, because__. A. it is nutritious B. it can„t harm people‟s health C. it can lower cancer risk D. it is not taken enough every day 2．Which of the following can not help people get more Vitamin D? A. Have some sunshine B. Have more meat

C. Have more fortified cheese D. Have a vitamin supplement 3．Who can Garland probably be?

A. A health researcher B. A doctor

C. A scientist D. A public health official

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