简答题"Three Letters" in traditional marriage system refers to the following letters except_______ . A、Betrothal Letter B、love letter C、Gift letter D、Wedding Letter简答题The correct order to have "Six Etiquettes"(A.Birthday matching, B.Presenting wedding gifts, C.Picking a wedding date, D.Presenting betrothal gifts, E. Proposing, F. Wedding ceremony) is: A、A-D-B-E-C-F B、E-D-A-C-B-F C、E-C-D-A-B-F D、E-A-D-B-C-F