治疗外感风寒兼气滞胸脘满闷、恶心呕逆者，宜选（）。
A.香薷
B.生姜
C.细辛
D.紫苏
E.柴胡
参考答案：D
一个底面是正方形的长方体，底面周长是20厘米，高12厘米，它的表面积是（ ）平方厘米，体积是（ ）立方厘米。
The employees were tired of working ________ hours and some of them even gave up their work. [ ]
A. special
B. extra
C. especial
D. spare
