◎ 题干
— Has ______ problem been solved?    
— Not yet. We're trying to think of ______ way out, but it's quite difficult to find one. 
[     ]
A. a; the    
B. the; a    
C. a; a      
D. the; the
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“— Has ______ problem been solved?— Not yet. We're trying to think of ______ way out, but it's quite difficult to find one.[ ]A. a; theB. the; aC. a; a…”主要考查了你对  【不定冠词】【定冠词】  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。