保险职业道德是保险从业人员（ ）的有机统一。
A．责、权、效
B．责、权、威
C．责、权、罚
D．责、权、利
参考答案：D
求下列各式中x的值
（1）3x2-27=0； （2）2（x-1）3=16．
_______his homework, he was not allowed to play out.
A．Not finished
B．Having finished
C．Having not finished
D．Not having finished
