when sleeping. Besides their regular sleep, cats take naps(打盹). _____

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• 1seem to have natural clock inside them that tells them _____
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• 2In bringing up children, every parent watches eagerly the child's acquisition(获得)of each new skill

  A. should be avoided

  B. is universal among parents

  C. sets up dangerous states of worry in the child

  D. will make him lose interest in learning new things

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• 3 In the process of children's learning new skills parents _____.

  A. should encourage them to read before know the meaning of the words they read

  B. Should not expect too much of them

  C. Should achieve a balance between pushing them too hard and leaving them on their own

  D. Should create as many learning opportunities as possible

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• 4Human needs seem endless. When a hungry man gets a meal, he begins to think about an overcoat; when

  A. he has saved up enough money

  B. he has grown dissatisfied with his simple shelter

  C. he has satisfied his hunger

  D. he has learned to build houses

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• 5 It can be inferred from the passage that by the end of World War Ⅱ, most Americans _____.

  A. were very rich

  B. lived in poverty

  C. had the good things on the first three levels

  D. did not own automobiles

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• 6 What is the main concern of man on the fourth level?
   

  A. The more goods the better.

  B. The more mental satisfaction the better.

  C. The more “luxury” items the better.

  D. The more earnings the better.

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• 7 The phrase "heat recovery" refers to a ______.

   

  A. method of concealing the source of heat

  B. special form of air conditioning

  C. supplementary hot water system

  D. way of reclaiming and re-using heat

  
  

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• 8Mary had an _____; she's been knocked down by a taxi.

  A.event

  B.occurrence

  C.accident

  D.incident

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• 9 Man __________ to make sounds.

  A. used words

  B. followed many things in nature

  C. lifted heavy things

  D. grunted like a pig

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• 10 You can enlarge your vocabulary by

  A. reading more books

  B. finding new words in dictionaries

  C. writing more

  D. using the words in everyday life

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