债券的利率期限结构是指债券的到期收益率与到期期限之间的关系。 ( )
参考答案：对
You _____ down everything I said! You can find it on this sheet I’m handing out.
A．shouldn’t have taken
B．must not have taken
C．cannot have taken
D．needn’t have taken
发现有人触电怎么办？
