【题目】Teachers have to constantly update their knowledge in order to maintain their professional ________．
A. consequence B. independence
C. competence D. intelligence
在线课程【答案】C
【解析】试题考查名词辨析。句意：老师们要不断地更新自己的知识以保持他们能够胜任工作的能力。A. consequence 结果 B. independence独立 C. competence 资格；能力；胜任，称职 D. intelligence 智力，根据句意所以选C。