下图为一位同学的课堂笔记，记录了对某一历史事件的不同评价。据此，推断他学习的内容是
A．太平天国运动
B．义和团运动
C．辛亥革命
D．北伐战争
答案：A
假定英语课上老师要求同桌之间交换修改作文，请你修改同桌写的以下作文。文中共有10处语言错误。每处错误仅涉及一个单词的增加、删除或修改。
增加：在缺词处加一个漏词符号(∧)，并在此符号下面写出该加的词。
删除：把多余的词用斜线(\)划掉。
修改：在错的词下划一横线，并在该词下面写出修改后的词。
注意：1. 每处错误及其修改均仅限一词；
2．只允许修改10处，多者(从第11处起)不计分。
As summer vacation are coming soon, my classmates are trying very hardly to get train tickets to go home. But I have made up my minds to spend the vacation far from home for first time in my life. My parents have agreed to visiting me, and I will have a different vacation. When they came here, I will show them around my university and the city just as well. I have decided to buy them some nice gifts. It will be a big surprising for them. My parents have done a lot for me, but I think it is high time that I did anything special to express my thanks.
交感神经节后纤维的递质是（）
A.乙酰胆碱
B.去甲肾上腺素
C.5-羟色胺
D.多巴胺
E.去甲肾上腺素或乙酰胆碱
