Which of the following does the story lead you to believe、

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• 1The main idea of the whole story is that _______.

  A.there is more food and water in space than on earth

  B.eating and drinking in space is a special problem

  C.astronauts can never eat or drink in a spaceship

  D.there is no food or water in a spaceship

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• 2Why can’t astronauts drink water from cups、

  A.The water would come from the open cups.

  B.The water would spill all over their food.

  C.Crambs would float in the cups.

  D.The cups would float in the air.

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• 3The story does not say this, but from what we have read, we can tell that ______.

  A.you get much hungrier in space than you do

  B.you can’t have water to drink in a spaceship

  C.astronauts must learn many new and different things

  D.you can’t eat anything in a spaceship

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• 4Some space foods are carried in _______.

  A.water guns

  B.lunch boxes

  C.closed bags

  D.crumbs

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• 5This selection says that the first wheel may have been a ______.

  A.round piece of stone

  B.heavy log

  C.piece of metal

  D.slice of log

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• 6How much energy given off by the sun reaches the earth、

  A.100% but indirectly.

  B.5%.

  C.50%.

  D.only a very tiny amount.

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• 7The 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

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• 8Which 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.

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• 9In 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

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• 10This passage centers mainly on ________.

  A.harnessing energy through chemistry

  B.our last source of power

  C.how water power is produced

  D.the amount of solar energy that can be utilized

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