It came as a great _______ to the parents that their son finally came back safe and sound.  

A．favor

B．sense

C．relaxation

D．relief

镜面舌主病是（）。

A.胃阴枯竭，胃乏生气

B.营血亏虚，阳气虚衰

C.正气亏虚，痰浊未化

D.邪去正胜，胃气渐复

E.食积胃肠，痰浊内蕴