肺Ⅱ型细胞合成的肺泡表面活性物质的重要作用是（）

A.促进中性粒细胞聚集

B.使肺泡萎陷

C.促炎作用

D.肺泡表面张力调节

E.增加肺组织弹性

It was at the Grand Hotel _______ the suspect was caught, _____ was quite beyond the expectation of the police.

A．that; that

B．where; that

C．where; which

D．that; which