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题目内容
（国家开放大学-大学英语1）
3. Jim Thorpe started to play sports 回答
.
A. before he was 9 years old
B. when he was 16 years old
C. when he was 24 years old
.
A. before he was 9 years old
B. when he was 16 years old
C. when he was 24 years old
参考答案
