1. Possible problems of the topic: Does it really fit the academic problems involved in this study (including the significance of the topic, important viewpoints and concepts, new viewpoints of the topic, details of the topic, weak links of the topic, feasibility of suggestions and questions about the work done by yourself).
2. Paper questions: the standardization of paper writing, data sources, important references mentioned in the paper and some controversial observation standards.
3. Slide show: Some pictures or charts need further explanation.
4. Questions completely unrelated to the topic: It seems to be related, but the respondent has never done it, which is not a question involved in the topic. What the respondent didn't do, but what do the judges think the respondent should do further?
Learning depends on the online education platform, and most of the teachers are college teachers. Students can experience better teaching and research and courses, and hope to adopt them.