不宜快速大量输液的疾病是（）。

A.慢性肾功能不全

B.老年性慢性支气管炎

C.小儿肺炎

D.缩窄性心包炎

E.急性胃肠炎

Speaker A: Thank you for everything you've done for me during my stay here. Speaker B:______

A．Oh, this is what I should do.

B．You are welcome.

C．Don't say that. Actually I have done little for you.

D．I'm sorry for not having looked after you well.