The girl, almost________ to death at the sight of the snake, shut her eyes and dared not have a second

look at it. [ ]

A. frightening  

B. was frightened

C. frightened  

D. having frightened

空调系统的基本组成部分不包括( )。

A．空气输配系统

B．空气处理设备

C．被调对象

D．通风管道