“All hope was not lost.” means “__________.”

A．There was no hope at all

B．Hope was everywhere

C．No hope was lost

D．Not all hope was lost

组员有权决定是否参加某些小组活动，有权决定是否中途退场，这是开展小组工作的（）

A.保密原则

B.知情原则

C.联系原则

D.尊重组员原则