—Which do you think is ________ more popular tourist place, the Forbidden   city or the Great Wall?  

— The latter in ______ sense. [ ]

A. a ; a      

B. a; the   

C. the; the    

D. the ; a

运用物质重点管理法时，实行重点管理的物质是()

A.A类物质

B.B类物质

C.C类物质

D.D类物质