◎ 题干
A _______schoolboy,  Li Lida first tried to cross the Qiongzhou Channel in June 2000.      
[     ]
A.  12-year old  
B.  12-year-old  
C.  12-years-old  
D.  12 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“A _______schoolboy,Li Lida first tried to cross the Qiongzhou Channel in June 2000. [ ]A.12-year oldB.12-year-oldC.12-years-oldD.12 years 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。