获利指数
参考答案：
是指投产后按基准收益率或设定折现率折算的各年现金流入量的现值合计与原始投资的现值合计之比。
The Korean singer PSY must have the _____of seeing his song Gangnam Style become popular all over the world
A．expression
B．attention
C．satisfaction
D．impression
5除2500，商是多少？
