—Mary isn't your cousin,_         ?        

—Yes , _           .   [ ]

A. is she; she is    

B. isn't she; she is  

C. is she;she isn't    

D. isn't she; she isn't

治疗阵发性室上性心动过速宜用（）

A.硝苯地平

B.氟桂利嗪

C.维拉帕米

D.尼莫地平

E.氨氯地平