I just wonder _______ that makes him so excited.

A．why it does

B．what he does

C．how it is

D．what it is

疫毒痢症见突然高热，恶心呕吐，烦躁谵语，痢下脓血，小便黄赤，舌质红，苔黄厚，脉数有力。治疗首选方剂是：

A．参附龙牡救逆汤

B．白头翁汤

C．黄连解毒汤

D．葛根芩连汤

E．紫雪丹