Tariffs may ______ on commodities leaving an area or on merchandise entering an area.

A．levy

B．be levied

C．effect

D．be effected

桃核承气汤的君药是（）

A.桂枝、桃仁

B.大黄、桃仁

C.吴茱萸、桃仁

D.吴茱萸、川芎

E.吴茱萸、桂枝