—May I go to the movies with you?

—I'm afraid not _______ you have a ticket, because I have only one. [ ]

A. if

B. unless

C. though

龙胆泻肝汤中多用苦燥渗利伤阴之品，为使祛邪不伤正，故方中配伍使用了（）

A.熟地、当归

B.生地、当归

C.生地、麦冬

D.麦冬、当归

E.麦冬、熟地