During the tourist season, there are many people wandering in this city to see the old castles _____ in the sixteenth century.

A．to be built

B．being built

C．having been built

D．built

一位心脏停止的患者到了急诊室，辅助通气(30/min)心脏复苏进行中，气管插管已置入，静脉通路已建立，下一步最适合给哪种药物治疗

A．10%氯化钙5ml静脉推注

B．肾上腺素1mg静脉推注

C．以200J同步心脏起搏

D．静脉给予NaHCO₃(1mmol/k

E．多巴胺5mg静脉滴注