以下选项中，不属于投机方法的是（）。

A.金字塔式买入卖出

B.套期保值

C.买低卖高或卖高买低

D.平均买低或平均卖高

When she was asked how she had managed to live ___with the man she hated so much, she didn't ___

to the question.[ ]

A. at peace; respond  

B. in peace; answer  

C. with peace; make an answer

D. in peace; respond