Paper duplication checking is a common academic practice, which aims to ensure the originality and academic integrity of papers. However, although students may pursue originality in the writing process, there are also some reasons that lead to repetition in the paper.

First of all, some students may learn from other people's research results and viewpoints, but they fail to quote and mark them correctly. In literature review, students need to quote the results of relevant research and indicate the source. If students don't quote and label these sources correctly, the duplicate checking system may identify these contents as duplicates.

Secondly, students may use the same experimental methods and data in the research process. In some cases, some research fields may have standard experimental methods and data sets. If multiple students use the same experimental methods and data sets, these contents may be identified as duplicates by the system when checking duplicates.

In addition, students may use the same research structure and expression in the writing process. When writing a thesis, students usually follow a specific research structure and writing norms. Therefore, if multiple students choose the same structure and writing style to organize their research results, the duplicate checking system may mark these contents as duplicates.

The key to solve this problem lies in improving students' academic writing ability and attaching importance to academic integrity. Students should learn to quote and mark others' achievements correctly, and pay attention to their originality in the writing process. In addition, students can increase their own research innovation and use unique data sets and experimental methods to ensure the originality of the paper.