◎ 题干
Mr. Black is a doctor. He works _____.
[     ]
A. in hospital    
B. on hospital  
C. in a hospital    
D. on a hospital
◎ 答案
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“Mr. Black is a doctor. He works _____.[ ]A. in hospitalB. on hospital C. in a hospitalD. on a hospital…”主要考查了你对  【不定冠词(a,an)】【介词】  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。