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Th

  • at fire ants prey on
  • bollworms and budworms is mentioned to show that    [A] pests often atta
  • ck each other to maintain a balance of nature.    [ B ] fire ants are not always harmful pests in given situations.    [ C ] fire ants are stronger an
  • d fiercer than bollworms and budworms.    [ D ] pests are either harmful or beneficial to people or plants.
试题出自试卷《2013年考研《英语》考前押密试卷(九)》
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