题目

把不够的图形补上，把多余的图形划掉△△△△○○○☆☆☆☆☆☆☆☆☆ 答案：【1】【2】【3】Teachers have to constantly update their knowledge in order to maintain their professional ________.　　　　　　　　　　　　　　　　　　A．consequence? ????????????? B．independence? C．competence? ????????????? D．intelligence