军队职称英语真题汇编-阅读理解97

试卷预览

• 1According to this passage, the phrase"balance of nature" means that（　）。

  A.relationship of wildlife to man

  B.adequacy of he food supply to support is animal population

  C.ratio of small game to predators

  D.destruction of predators

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• 2Nature brings itself into balance by（　）。

  A.decreasing the animal population

  B.decreasing the food supply

  C.increasing the animal population

  D.increasing the food supply

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• 3A predator is,（　）。

  A.an animal that kills other animals

  B.a disease

  C.a parasite

  D.a lemming

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• 4The effect of predator control over other animal populations（　）。

  A.has just been learned

  B.is not recent knowledge

  C.is not important to know

  D.was learned in Norway

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• 5The records of the Hudson' s Bay Company show that the fox population（　）。

  A.has no relation to the rabbit population

  B.increased after the rabbit population increased

  C.decreased after the rabbit population increased

  D.increased after the rabbit population decreased

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