下面哪一项不属于商品单价的组成部分?（）
A.记价货币
B.单位价格金额
C.贸易术语
D.运输方式
参考答案：D
I don't think _________ possible to master a foreign language without much memory work.
A．this
B．that
C．its
D．it
—Are those your tapes?
— .
A、Yes, those are
B、No, it isn’t
C、No, they aren’t
