问题
选择题
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
答案：A
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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：A