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2014年成人高考高起点英语阅读理解考前训练3
时间: 2014年07月23日 来源:互联网 作者: 佚名 浏览:

   The energy which the sun radiates goes in every direction, and only a minute part of it falls on the earth Even so, it represents power of about 5,000,000 horsepower (马力) per square mile per day; the sun gives us as much energy every miunte as mankind utilizes in a year At present,we use this energy indirectly, and it is our final source of power Coal represents the chemical action of the sun on green plants thousands of years ago Water power results from the rain formed by vapor which comes from the evaporation of water under the sunshine Even windmills operate because of air currents set in motion by the different heating affects of the sun in different places Some day, through chemistry or some type of solar engine, we shall harness this great source of energy more directly Already a scientist has worked out an engine, surprisingly efficient, in which the suns rays are concentrated through mirrors on a tube of water to create steam

  1How much energy given off by the sun reaches the earth?

  A100% but indirectly B5%

  C50% Donly a very tiny amount

  2The reason why all the solar energy falling on the earth cant be utilized is that 

  Aonly a very small part is available

  Bthe sun is too distant from the earth

  Cit takes thousands of years for this energy to be stored up in coal and oil

  Dour scientific knowledge is not sufficient

  3Which of the following statements is NOT true?

  AEven windmills action depends on the sun.

  BThe sun produces enormous energy for man to make use of.

  CSome day man will be able to utilize 100% of the solar energy that gets to the earth.

  DThe sun produces different heating effects in different places.

  4In order to support this argument, the writer gives the example that 

  Aa machine using solar energy efficiently has already been developed

  Bthe sun is our final source of power

  Cman uses only a tiny part of the suns energy

  Dthe part of the suns energy we use is used indirectly

  答案:1D 2D 3 C 4A

 

 
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