--- It’s thirty years since we last met.

--- But I still remember the story, believe it or not, _________we got lost on a rainy night. 

A．which

B．that

C．what

D．When

计算劳动量和机械台班数时，应首先确定所采用的（）。

A.定额

B.施工方案

C.施工工艺

D.施工顺序