—Listen! Someone is playing the piano.
— Wow! beautiful music! I like it very much.
A:What
B:How a
C:What a
D:How
建国以来,我国农村生产关系的变革或调整经历了以下几个阶段,按先后顺序是( )
①土地改革 ②人民公社化 ③农业合作化 ④实行家庭联产承包责任制。