There are 8 __ dogs in the zoo. [ ]
A. kinds
B. kind of
C. kinds of
D. kind
治疗痰阻心窍之癫痫抽搐、惊风发狂者,宜选()
A.朱砂
B.郁金
C.龙骨
D.丹参
E.远志
如何调整风扇皮带松紧度?