The factory _____ since the February of 1995.[ ]

A. has been open

B. has opened

C. was open

D. opened

患者，男，24岁，腹痛腹泻，泻下急迫不爽，大便黄褐粘滞而秽臭，肛门灼热，口渴尿赤，舌红苔黄腻，脉濡数，治疗选方为

A．保和丸

B．白头翁汤

C．芍药汤

D．葛根芩连汤

E．枳实导滞丸