◎ 题干
----- In recent years,___ problem of global warning has been very serious.
------That’s right. People are facing ____ number of natural disasters now.
A.不填;B.a; theC.the; aD.a; a
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“----- In recent years,___ problem of global warning has been very serious. ------That’s right. People are facing ____ number of natural disasters now.A.不填;…”主要考查了你对  【不定冠词】【定冠词】【零冠词】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。