The tour pal lost his way in the mountain; ________ made things worse was that it began to rain.

A．that

B．what

C．which

D．who

下列哪项不是开窍药的主要药理作用

A．调节中枢神经功能

B．抗心肌缺血

C．抗炎

D．调节机体免疫功能

E．以上均非