阅读下面的材料，根据要求写一篇不少于800字的作文。

（一）2016年7月23日，延庆区北京八达岭野生动物园发生一起东北虎伤人事件，造成1死1件。调查组对事发原因作出如下认定：一是赵某未遵守八达岭野生动物世界猛兽区严禁下车的规定，对园区相关管理人员和其他客的警示未予理会，擅自下车，导致其被虎攻击受伤。二是周某见女儿被虎拖走后，救女心切，未遵守八达岭野生动物园世界猛兽区严禁下车的规定，施救措施不当，导致其被虎攻击裂死亡。

（二）2017年1月29日下午，宁波雅戈尔动物园发生老虎伤人事件，致一人死亡。宁波官方最新回应称，被咬男子没有买票，翻墙钻过铁丝网进入了老虎散放区。

这两则材料能引发你怎样的感悟和思考？请自选角度；自定立意；自拟题目，写一篇不少于800字的作文，不得套作。

    My name is Jane. I'm a Chinese girl. I am 13 years old. There are ____ people in my family, my father, my mother, my sister and I. We get on ____ with each other. My father is a ____ (work), and he works in a car factory. He works very hard from Monday to Friday. My mother is a teacher and she ____(teach) in a middle school. Her students love ____(she) very much ____ she is a very good teacher. My sister is a nurse in No.1 hospital. I am ____student in Hangzhou No.1 Middle School. I am going to join the tennis club because I can ____  (play) table tennis very well. We all want____(live) happily at home. Every day____ (be) a good day because we love each other very much.

已知⊙O的半径为5cm，A是⊙O内一点，AO=3cm，那么过点A最短的弦长为____ cm.