◎ 题干
Jack Smith is only a _____ boy, but he can lift such aheavy stone.         
[     ]
A. 12-years-old             
B. 12 years old
C. 12-year-old               
D. 12 year old
◎ 答案
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“Jack Smith is only a _____ boy, but he can lift such aheavy stone.[ ]A. 12-years-oldB. 12 years oldC. 12-year-oldD. 12 year old…”主要考查了你对  【形容词】  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。