____ he was in poor health, he worked just as hard as everyone else.

A．But

B．Although

C．Even if

D．If

具有解表清里功用的方剂是（）

A．葛根黄芩黄连汤

B．麻黄杏仁甘草石膏汤

C．凉膈散

D．小柴胡汤

E．竹叶石膏汤