我国城镇职工基本养老金的待遇主要由哪几部分组成（）
A.基础养老金
B.个人储蓄养老金
C.个人帐户养老金
D.企业补充养老保险
参考答案：A, C
The Chinese_____fifty-six nationalities,each of whom has their own characteristic. [ ]
A. is consisted of
B. consists in
C. is made of
D. consists of
花材、花泥、花器等的成本在插花作品成本中是（）。
A.花材成本
B.其他成本
C.间接成本
D.主要的直接成本
