问题
选择题
Teachers have to constantly update their knowledge in order to maintain their professional _____.
A．consequence
B．independence
C．competence
D．intelligence
答案
答案：C
题目分析：考查名词：句意：教师们必须不断地更新他们的知识以保持他们能够胜任工作的能力。A. consequence后果，结果，B. independence 独立，C. competence能力，D. intelligence智力，所以选C。