-- Can I have some more ice cream, Mum?
-- Sorry. There is _______ left in the fridge.
A:none
B:nothing
C:no one
D:anything
以下史实哪一项反映了唐代的民族交往?( )
欧洲西部有一个世界上最有影响的区域性国际组织,简称是( )