林线是指高海拔山地的森林分布上限。下图为根据我国各地山地监测数据以及气象资料模拟的林线高度分布示意图。读图回答下列问题

近年来，我国积极推动政府部门向社会组织转移职能，向社会组织开放更多的公共资源和领域，积极引导社会组织参与社会管理，支持社会组织进入群众生产生活性服务领域。政府向社会组织转移职能有利于（    ）

①促进政府和社会组织平等地履行国家职能

②转变政府职能，充分发挥社会组织的作用

③优化公共资源配置，发挥公共资源的作用

④强化政府的管理功能，弱化社会服务功能

    I'm Sally . I was a shy girl . Bu this term , I decided to do a brave（勇敢）thing . In this term , we had a new subject to learn –physics . When our teacher asked someone to be the physics monitor（物理课代表）, I put up my hand and got the role . But it was not as easy as I thought .

    At the beginning , I found that many students did not hand in（上交）their homework , so I was a little worried . I shouted at the students . It made the students angry . One girl asked : “ Why are you shouting at me ? You're making it seem like it is all my mistake（错误）. ” Then I found that , it was my mistake in fact . I should talk to my classmates in a kind way and not get so angry .

    After this , I changed（改变）how I spoke . “ Excuse me . Could you please finish your homework ? ” I said . Later , I was surprised that many students understood me a lot better and finished their homework quickly.

    I found the best way to do this job is to talk with my classmates in a friendly way . Now , I am getting better and better with my classmates . This job makes me feel like I am growing up like a little tree day by day .

甲、乙两金属球，质量相等，初温相同，先将甲球投入冷水中，待热平衡后水温升高t℃，取出甲球（设热量与水均无损失），再迅速把乙球投入水中，这杯水热平衡后水温又升高t℃，设甲、乙两球的比热分别为C_甲和C_乙，则有（　　）