均可利水消肿，治疗水肿的药组是（）
A.莪术、三棱
B.斑蝥、血竭
C.益母草、泽兰
D.骨碎补、巴戟天
E.苏木、穿山甲
参考答案：C
I want _____ a policeman because it is an exciting ______. [ ]
A. to be; job
B. doing; work
C. to do; job
D. be; work
