怔忡，临床上多见于：（）
A.热证
B.表证
C.实证
D.虚证
E.寒证
参考答案：D
Teachers have to constantly update their knowledge in order to maintain their professional ________.[ ]
A. consequence
B. independence
C. competence
D. intelligence
块是复杂对象，变成简单对象是通过什么命令实现的（）。
A.PEDIT
B.INSERT
C.CHANGE
D.EXPLODE
