The source of the topic, that is, whether the topic of the paper is recommended by the teacher or chosen by himself (according to interest, professional expertise, etc.). ). You can choose from the following expressions: According to the tutor's guidance and personal interests and abilities, choose from the reference topics given by the tutor. By consulting relevant materials and under the guidance of the tutor, I agreed to choose the topic of this article. In the study of various courses in the university, I have a strong interest in the present situation and development of XXX, and I have great enthusiasm to study and analyze it, so I take this issue as the topic of my thesis. By consulting the information and literature related to the major, and discussing with the tutor according to the professional knowledge I have learned, the topic of the thesis is determined. Through extensive reading materials and consulting with teachers.