John passed the examination though he had only spent _______ on the subject as others had done.

A．as half time much

B．as half much time

C．half as time much

D．half as much time

月经先期肝郁血热证的治法是（）

A.疏肝清热，凉血调经

B.补肾疏肝，调经止血

C.疏肝解郁，理气调经

D.疏肝清热，固冲调经

E.疏肝健脾，摄血调经