◎ 题干
Mary is             old.
[     ]
A. one and a half year    
B. one and a half years
C. one and half year    
D. one year and half
◎ 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“Mary isold. [ ]A. one and a half yearB. one and a half years C. one and half year D. one year and half …”主要考查了你对  【可数名词(单数名词,复数名词)】【基数词】  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。