受（）的限制，在扑救隧道火灾通信联络得不到保障。

A、建筑结构

B、建筑形式

C、建筑长度

D、建筑材料

Shooting ______ movie at high school is _______ experience that I will never forget as long as I live.

A．The; a

B．a; /

C．/; an

D．a; an