进入初中阶段,学生的情绪体验会明显丰富和细致起来。其情绪的特点是( )①稳定性 ②多样性 ③隐蔽性 ④复杂性
A:①③
B:②③④
C:②④
D:①③④
读成渝经济区城际铁路规划示意图,完成下面小题。
—I think teenagers should be allowed to make their own decisions when they have problems at school.
—_______. They're not calm enough, after all.