－I don't know this was a one-way street , officer

—_________________   [ ]

A. That' s right.    

B. Sorry, but that's no excuse.    

C. How can you say that?    

D I don't believe you.

水尺投入运用前必须准确测定其（）。

A.位置

B.高度

C.零点高程

D.顶高程