－Could you come back home at five? 　

－______. I have something important to do at school at ten past five. [ ]

A. I'm afraid not.

B. I'm afraid so.

C. Yes, I hope so.

D. I don't care.

通过住宅的布置，可以提高通风效果的是( )。

A．住宅与主导风向垂直

B．采用塔式住宅

C．住宅与主导风向略呈角度

D．建筑布局采用“南敞北闭”的形式

E．建筑立面设置导流板