There are many talented actors out there just waiting _______.

A．to discover

B．to be discovered

C．discovered

D．being discovered

外科治疗门静脉高压症最主要的目的是

A．减轻肝性脑病

B．治疗顽固性腹水

C．纠正血小板减少

D．预防腹水并发感染

E．防治食管、胃底静脉破裂出血