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
考查名词辨析。句意：为了能保持专业技能，老师们必须不断地更新他们的知识。consequence结果，后果；independence独立，自主；competence能力，技能；intelligence智力，智慧。