某同学的课堂笔记写道：“发生于19世纪50年代的这场以农民为主体的运动，采取暴力革命，反对列强侵略、反对封建王朝 。”反映了这位同学最有可能学习的内容是（    ）

若直线的倾斜角为60°，则直线的斜率为（　　）

   I am an English girl. My name is Mary. I’m twelve. My dad and mom are English teachers. I have a brother（哥哥）. His name is Tom and he is thirteen years old. We are in China now. We are in Beijing No. 4 Junior High School. Tom is in Class 4, Grade 7 and I am in Class 9, Grade 7. I have a dog. My dog looks strong. It has a big mouth and two big black ears. We have many(许多) Chinese friends here. They are good.

有以下温度：1530℃，120℃，55℃，37℃，23℃，0℃，﹣8℃，﹣50℃．请你为以下情况选择合适的温度：（1）铁的熔点为 ____　；（2）健康成年人的体温为 ____　；（3）沈高冬季最冷的室外温度大约为 ____．