◎ 题干
 Liu Xuan won a gold medal at the World Championships when she was _____.
[     ]
A. 17 years old    
B. 10 months old  
C. 4 years old  
D. 10 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“Liu Xuan won a gold medal at the World Championships when she was _____.[ ]A. 17 years old B. 10 months oldC. 4 years oldD. 10 years old…”主要考查了你对  【名词】  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。