— Is it time ____________?

— I think so. Let's ____________.[ ]

A. to class, go

B. for a class, to go

C. to have class, go

D. to have classes, to go

肝阴不足型胁痛，出现头晕目眩的主要病机是：

A．脾胃虚弱，清阳不升

B．精血不足，不能上承

C．久病入络，气瘀血滞

D．痰饮内停，阻遏清阳

E．以上都不是