被称为"气血生化之源"的脏是（）
A.心
B.肺
C.脾
D.肝
E.肾
参考答案：C
合用善宣肺降气而平喘止咳，治喘咳气逆功著的药组是( )
A．麻黄配杏仁 B．麻黄配石膏 C．麻黄配桂枝 D．桂枝配白芍 E．麻黄配细辛
I want _____ a policeman because it is an exciting ________.[ ]
A. doing, job
B. doing, work
C. to be, work
D. to be, job
