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13.With the changes in the world's climate,dinosaurs died,but many smaller animals lived on.It was the
      of the fittest.(  )
A.survivalB.distinctionC.existenceD.appearance

分析 随着世界气候的变化,恐龙消失了,但是很多小的动物继续存活.这是适者生存.

解答 答案是A.本题考查名词词义辨析.A项表示"幸存",the survival of the fittest适者生存;B项表示"区别";C项表示"存在";D项表示"出现";根据句意和搭配判断,答案选择A项,其它选项不符合逻辑.

点评 本题考查名词词义辨析,考生在平时的学习中应注意积累相应的词汇和搭配,并牢记其意思.在做题时,将词义和题干相结合,从语法、句子结构尤其是句意上去判断,句意通顺,符合逻辑,即正确答案.

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