洒水车在晨曦中辛勤的工作，已知汽车自重2.5吨，满载时装水10吨，共有10个轮胎，每个轮胎与地面的接触面积为0.05m²。

根据短文内容，完成下列各题。

    In China, September 10th is a special day. It's Teachers' Day. Teachers' Day began in 1985. It is a great day for all the teachers and also a happy time for us students. How do we spend Teachers’ Day every year?

    On that day, we go to school early in the morning, and put a bunch (束) of flowers on our teacher's desk to give him or her a big surprise. Some of us help him or her to do some easy work. And others stand at the school gate to say hello to teachers when they go into the school.

    In the afternoon, we have a party. We sing and dance with the teachers.

    All of us are very happy. The teachers say that the best reward (奖励，奖赏) for them is to see our great progress(进步).

已知关于x的不等式|x+2|﹣|x+3|＞m有解，则实数m的取值范围是（　　）

秦刚拟办一份历史手抄报，准备了如图所示素材，据此推断这份手抄报的主题是（　　）