根据工程经济学理论，现金流量的要素包括( )。
A．基准收益率
B．资金数额
C．利率大小
D．现金流量的作用点
E．现金流量的方向
参考答案：B,D,E
I don’t believe the reason ____ he has given for not coming to the lecture.
A．why
B．that
C．how
D．what
He has _________ friends than I. [ ]
A. much more
B. many more
C. very more
