In a “primary succession', what makes it possible for mosses to take root、

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• 1What has sometimes caused plants to die out of the past、

  A.Interference from foresters.

  B.Variations in climate.

  C.The absence of wooded lan

  D.D.The introduction of new type of plants.

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• 2What does the forest strike mankind as permanent、

  A.The trees are in community.

  B.The forest is renewed each season.

  C.Man's life is short in comparison.

  D.It is an essential part our lives.

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• 3The writer would approve an unsuccessful political candidate ____.

  A.gave up all his opportunities

  B.promised to try again next time

  C.overthrew the government by force

  D.told the people the truth about his opponent

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• 4The writer suggests that a successful leader must ____.

  A.be prudent and faithful

  B.cheat and lie

  C.have principle to guide his actions

  D.tell the people the truth about his opponent

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• 5The fox, in this passage, is ____.

  A.admired for his trickery

  B.no match for the lion

  C.pitied for his trick

  D.considered worthless

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• 6What conditions are needed for shrubs to become established、

  A.Ferns must take root.

  B.The ground must be covered with grass.

  C.More soil must accumulate.

  D.Smaller plants must die out.

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• 7Why is a “secondary succession” quicker、

  A.The ground is more suitable.

  B.There is more space for new plants.

  C.Birds and animals bring new seeds.

  D.It is supported by the forest.

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• 8Which of the following would be the best title for the passage、

  A.Grandma Moses: A Biographical Sketch

  B.The Children of Grandma Moses

  C.Grandma Moses: Her Best Exhibition

  D.Grandma Moses and Other Older Artists

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• 9According to the passage, Grandma Moses began to paint because she wanted to ____. 

  A.decorate her home

  B.keep active

  C.improve her salary 

  D.gain an international reputation

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• 10From Grandma Moses' description of herself in the first paragraph, it can be inferred that she was ____.

  A.independent

  B.pretty

  C.wealthy

  D.timid

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