If we work with a strong will, we can overcome any difficulty, _____great it is.

A．what

B．how

C．however

D．whatever

肺炎喘嗽痰热闭肺的极期伴见痰涎壅塞、大便秘结、面唇严重青紫时，应在首选方剂中加用（）。

A.温补心阳药

B.清化热痰药

C.通腑泻下药

D.活血化瘀药

E.回阳救逆药