—Hi，Jim. I_______ you for a long time.     

—I_______ in Beijing for two months. I’ve just comeback.    [      ]

A. didn’t see; have been                

B. haven’t seen; was    

C. didn’t see; was                      

D. haven’t seen; have been

能治疗强心苷中毒引起的窦性心动过缓和房室传导阻滞的药物是（）

A．洋地黄毒苷 

B．地高辛 

C．阿托品 

D．哌替啶 

E．考来烯胺