---How well do you know the Opera House?

--- I know the place very well. I         Sydney many times.

A．have been in

B．have been to

C．have gone to

D．have arrived in

当资源不足、服务对象需求相同时，我们应遵循( )，对家庭更加贫困、健康状况较差的服务对象给予区别对待。

A．完全平等和差别平等原则

B．改善生活质量原则

C．保护生命原则

D．真诚原则

E．最小伤害原则