模板、支架和拱架的设计中应根据（）等因素设置施工预拱度。

A．载户基础的沉降

B．受载后杆件接头处的非弹性变形

C．受载后的弹性变形

D．结构预拱度的设计值

E．受载后的稳定性

He had dreamed of going there for a long time. But he _______ he would have such an unpleasant experience.

A．needn’t have expected

B．couldn’t have expected

C．mustn’t have expected

D．shouldn’t have expected