请根据下面表格中所提供的信息写一篇有关中美高中教育的短文.词数:100—120。中国美国学制三年四年（大多数）学生学习努力，知识扎实更加活泼，运用知识能力强学习时间每天约10小时每天约8.5小时课外活动学校、班级组织的多学生自己组织的多其他班级和教室固定班级和教室不固定，到老师办公室上课生词：课外活动 xtra curricular范文：Thr ar diffrncs btwn high school in China and that in th Unitd Stats. High school in China lasts thr yars, whil in most US stats four yars. In China, studnts ar in fixd classs and classrooms. vry day thy study hard for about 10 hours and hav a solid knowldg. But in th Unitd Stats, studnts don’t hav fixd classs or classrooms and thy go to thir tachrs’ offics for classs. Thy spnd about 8.5 hours on study a day. Thy ar livly and good at activitis organizd by thmslvs. Howvr, in China, th studnts’ xtra curricular activitis ar mostly organizd by schools and classs.