A:向右平动
B:向左平动
C:N极向外、S极向内转动
D:绕垂直于纸面且过O点的轴转动
Jenny and Li Ming watched Bob play basketball this evening. They arrived at the gym(体育馆)at 6:30. Bob's team played with the Orange Team. Everyone played hard! Jenny and Li Ming had fun at the gym. They yelled for Bob's team. Finally, Bob's team won. They were very happy.
①坚持了系统优化的思想和方法 ②告诉我们量的积累必然引起质变
③表明新事物的发展不是一帆风顺的 ④符合主观与客观具体历史的统一