小刚以前经常迟到，老师多次提出批评，他认为这是小题大做。老师让他担任了一周“班主任”，他体验到了班级管理的难度，以后再也没有迟到过。这件事表明，如果学生站在老师的角度看问题，就能够（    ）

①更好地理解和严格遵守学校的规章制度            ②设身处地为老师着想，理解老师的做法

③理解老师，从而顺利化解师生之间的冲突        ④不再犯错误了

有一瓶混有酵母菌的葡萄糖培养液，当通入不同浓度的氧气时，其产生的C₂H₅OH和CO₂的量 如下表所示。通过对表中数据分析可得出的结论是

    Helen Keller lived in the USA. When she was a baby, she got very sick. After she was better, she couldn't and hear well. A few years later, things got worse. There was no way for Helen to speak to other people. She heard nothing. She saw nothing. She didn't understand anything.

    One day a teacher came to live with Helen and her family. The teacher helped Helen learn about words. Helen was such a bright girl that she could spell her first word soon. When she was older, she went to college.

    Helen became very famous later. She traveled around the world and helped many blind and deaf people. The world remembers her today as a brave and wonderful person. She was blind and deaf, but she found a way to see and hear.

根据拼音写汉字。

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