The city of Yiwu is ______ unique attraction to tourists and businessmen at _____ home and abroad as there are various kinds of specialized markets in it.

A．an; /

B．the; the

C．a; /

D．/; the

女性，50岁，患风湿性心脏病，心功能不全Ⅱ度。经地高辛治疗4周后病情缓解，但出现恶心，呕吐，黄视等，心电图：P-P和P-R间期延长。测血中地高辛浓度为3．2ng／ml。诊断为地高辛中毒。除立即停药外，还应给下列哪种药物

A．利多卡因

B．阿托品

C．苯妥英钠

D．普萘洛尔

E．普鲁卡因胺