－Do you know the lady           is interviewing our head master?  

－Yes, she is a journalist from CCTV.    [ ]

A. whom                      

B. which    

C. who                        

D. whose

气瓶外表面的（）与所装气体的规定标记应相符。

A、颜色标记

B、检验标记

C、用户标记