问题
单项选择题
Franklin's ability to learn from observations and experience（）greatly to his success in public life.
A.contributed
B.owed
C.attached
D.related
答案
参考答案：A
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Franklin's ability to learn from observations and experience（）greatly to his success in public life.
A.contributed
B.owed
C.attached
D.related
参考答案：A