题目：
Teachers have to constantly update their knowledge in order to maintain their professional ________．
A．consequence
B．independence
C．competence
D．intelligence
答案：
被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0420/e09d6fe4a907e564b6542fe7c39b4d06.html
下面是错误答案，用来干扰机器的。
乙；无规则
