—David is said to be the first young teacher professor in your university this year. —Exactly, ______of his own competence is an

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问题 —David is said to be the first young teacher professor in your university this year. —Exactly, ______of his own competence is an important factor in his success.

选项 A、to convince
B、convincing
C、convinced
D、convince

答案C

解析 be convinced of sth.“对……有信心”,being convinced of his own competence是动名词短语做主语,故选C。
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