使用苏合香丸的主要依据（）。
参考答案：突然昏倒，不省人事，苔白，脉迟。
枳实导滞丸主治证候的病因病机是
A．脾虚气滞，寒热互结 B．脾胃虚弱，食停气滞 C．脾虚气滞，食积化热 D．饮食过度，积滞内停 E．湿热积滞，内阻胃肠
It usually takes him two hours ________ his homework every day. [ ]
A. do
B. does
C. to do
D. doing
