股票与债券的相同点是[ ]
A．都可以上市流通
B．收益是一样的
C．到期都还本付息
D．都是筹资方式
答案：D
— What are you mailing, Tom?
— A textbook ______ a new method of teaching physics. I want my friend to take a look at it.
[ ]
A. is based on
B. based on
C. basing on
D. which based on
