治疗阴虚牙痛，一般都在主穴的基础上加用
A．风池、肾俞B．风府、太溪C．太溪、行间D．太溪、丰隆E．照海、阳池
参考答案：C
So far nothing _____ Tom. I want to know the reason _______ he hasn’t written to me.
A．heard from; why
B．has been heard from; why
C．was heard from; that
D．has heard from; that
在20℃时，食盐的溶解度是36g，将40g食盐放入100克水中，在20℃时充分溶解后，所得食盐溶液的质量是 [ ]
A、140g
B、136g
C、176g
D、36g
