Little     about her own safety, though she was in great danger herself.

A．did Rose care

B．Rose did care

C．Rose does care

D．does Rose care

下列属于非概率抽样方法的是

A．单纯随机抽样
B．系统(或称机械)抽样
C．目的(或称判断)抽样
D．分层抽样
E．整群抽样