Bibliography:

1, College English: A Comprehensive Course of Practical English, 4th Edition, Higher Education Press. Editor-in-Chief: Practical English Textbook Writing Group (Editor); 2. Fundamentals of University Computer: Fundamentals of University Computer Edited by Jiang Jiafu and Shen Yue 3rd Edition, Beijing University of Posts and Telecommunications Press, 3. Advanced Mathematics: Editor-in-Chief of the Department of Applied Mathematics of Tongji University (less undergraduate hours), published by Higher Education Press, 3rd edition.

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