患者男性，47岁，反复心悸、胸闷5天入院。既往无任何病史。入院查血压80/40mmHg。心电图示P波消失，出现f波，R-R间期绝对不等。患者目前需要进行紧急处理的是（）

A.静脉注射胺碘酮

B.静脉注射普罗帕酮

C.同步电复律

D.非同步电复律

E.心脏起搏

In the global economy, a new drug for cancer,           it is discovered, will create many economic possibilities around the world.

A．whatever

B．whoever

C．wherever

D．whichever