神州六号飞行速度每秒7.9千米可写成( )。
7.9千米/秒
Little children should go to school to learn something. ______,they should learn how to behave well in social life.
A.After all
B.In all
C.At all
D.Above all
会计人员每年参加继续教育培训不得少于24小时。 ( )