（）f____ng____rA.a,uB.a,oC.u,

请选择ABCD/M)t*c8y,H.m1Z.Y5l f ____ ng ____ r2a3]2S6p(@2@.U4f9t4m

A. a, u2a3]2S6p(@2@.U4f9t4m

B. a, o2a3]2S6p(@2@.U4f9t4m

C. u, e2a3]2S6p(@2@.U4f9t4m

D. i, e2a3]2S6p(@2@.U4f9t4m