A.A massage should be performied after a meal at once
B.The massagist should warm his hands before performing a massage
C.A massage should be performed 5 minutes after a meal at once
D.It is notnecessary to make the massagist’s hands warm before a massage.

A.The force is too heavy.
B.the force is too big
C.The force is too light.
D.the force is suitable.