．What sets human beings apart from animals is not the pursuit of happiness, but the pursuit of meaning, ________ is unique to humans.

A．that

B．what

C．which

D．as

至宝丹最适宜于哪种原因所致的窍闭神昏（）

A.温邪内陷

B.痰热壅闭

C.肝阳暴张

D.心火炽盛

E.中寒气闭