根据短文理解，选择正确答案。

    It's seven forty in the morning. The students are coming into the classroom. A girl is opening the window. Some of the students are laughing and talking. Some others are listening to them. Some are reading books. Some are doing their homework.

    Miss Zhao is standing behind the teacher's desk. She is writing on the blackboard. She and Lily are wearing their new dresses. Ann is cleaning her desk, and Mike is helping her. They all look happy.

    What are Bill and Jim doing? Oh, dear, they are still playing basketball on the playground.

进入青春期后，闭锁心理经常会困扰青少年，打开心灵之窗，走出闭锁心理，拥抱灿烂阳光，才有利于我们健康成长，下列做法中正确的是 （    ）

①父母越来越不理解自己了，要找机会和他们谈谈心                ②碰到不高兴的事情，尽量闷在心里，不让别人知道

③课堂上没有把老师讲的内容弄懂，主动去请教老师                ④离家出走，独自一人去网吧、游戏厅玩个痛痛快快