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4.Experts warn that global warming will cause extreme climate changes including more _____ floods,heat waves and droughts.(  )
A.usual.B.ordinaryC.frequentD.common

分析 专家警告地区变暖会引起极端的天气变化,包括更频繁的洪水、热浪和干旱.

解答 答案是C.
本题考查形容词词义辨析.usual往常的;平常的;as usual像往常一样;ordinary 普通的;平常的;frequent 频繁的,经常的;common普遍的;常见的;common sense常识;题干表达的意思是洪水变得"频繁",所以答案选择C.

点评 本题考查形容词词义辨析,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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