I _____ to Canada twice. It's so beautiful. [ ]

A. won't go

B. have gone

C. don't go

D. have been

室性早搏的处理原则（）

A.偶发的加强观察，不予处理

B.5～6次/分，利多卡因50～1OOmg静脉推注

C.上述处理无效可用溴苄胺

D.伴窦性心动过缓时可用阿托品

E.单次使用利多卡因不超过2mg/kg