The artist         all of her money to charities         the victims of Yaan.

A．gave off, to help

B．gave up, helping

C．gave away, to help

D．gave, helping

劳动合同依法订立后即具有( )约束力。

A．一定的

B．法律的

C．不可变更的

D．必须遵守的

E．不得违反的