--What did he say in_______ of his stupid behavior?

--He admitted having made a serious mistake.

A．explanation

B．favor

C．case

D．fear

波斯纳在分析时将新产品从诞生到模仿的过程分为（）

A.发明时滞

B.使用时滞

C.需求时滞

D.模仿时滞

E.消费时滞