◎ 题干
Mrs Smith is ______ woman.   
[     ]
A. a eighty-year-old
B. an eighty-year-old    
C. an eighty-years-old
D. a eighty-years-old
◎ 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“Mrs Smith is ______ woman.[ ]A. a eighty-year-oldB. an eighty-year-oldC. an eighty-years-oldD. a eighty-years-old…”主要考查了你对  【不定冠词(a,an)】  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。