Why can’t astronauts drink water from cups、

试卷相关题目

• 1The 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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• 2Some space foods are carried in _______.

  A.water guns

  B.lunch boxes

  C.closed bags

  D.crumbs

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• 3This 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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• 4The wheel was probably invented by ______.

  A.a group of early hunters

  B.the first men on earth

  C.a great prehistoric thinker

  D.the man who made the first cart

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• 5It was remarkable of man to invent the wheel because _______.

  A.it led to many other inventions

  B.man had no use for it then

  C.there were no wheels in nature

  D.all of the above

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• 6The 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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• 7Which of the following does the story lead you to believe、

  A.Food for astronauts must be made in a special way.

  B.All meat on earth comes in bite-sized pieces.

  C.Astronauts will only eat cakes made from crambs.

  D.Astronauts have to go hungry in a spaceship.

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• 8How 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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• 9The 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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• 10Which 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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