Most nurses are women, but in the higher ranks of the medical profession women are a

A．scarcity

B．minority

C．minimum

D．shortage

在EXCEL的查找中，有两种通配符“*”和“？”，“？”代替（）。

A、一个或多个字符

B、一个字符

C、任一单个字符

D、多个字符