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
句意：为了保持专业能力，老师得不断地更新自己的知识。competence“能力”，符合语意。consequence“结果”，independence“独立”，intelligence“智力”，均不符合语意。