In the classroom, the 3DA emphasizes （）.

A. student's own responsibility of learning

B. teachers' active role

C. practice and test

D. practice and consolidation

喷浆工交接班时，问题处理对（），落实责任向上汇报。

A.遗留问题

B.文明生产

C.支护问题

D.其他问题