A:市场调节具有盲目性
B:市场调节具有自发性
C:市场调节具有滞后性
D:上述三者均有
如图所示的几何体是由六个相同的小正方体组合而成的,它的俯视图是( )
First, please read the ____ (introduce) of the book. Then tell me your opinion about it.
____