治疗鹅口疮心脾积热证，应首选
A．凉膈散B．泻黄散C．清热泻脾散D．泻心导赤散E．知柏地黄丸
参考答案：C
一个等腰梯形的上底是8厘米，下底是12厘米，腰是9厘米，围成这个等腰梯形至少要______厘米长的铁丝．
I spent five hours repairing the car. The work was ____ simple.
A．nothing but
B．anything but
C．something of
D．all except
