根据句意和所给首字母提示完成单词。

1.There are two l     in our city. 

2.Our classroom is next to the science l    . 

3.The d     hall is behind our teaching building. 

4.-W     are Lucy and Lily? 

-They are in the bedroom.

5.Is there a c     room in your science building? 

公安指挥员在处警现场依法行使指挥权的最直接的处置指挥中心是（）。

A.联合指挥部

B.现场指挥部

C.分指挥部

D.总指挥部