One of the sports. Swimming refers to the movement of the head, trunk, arms and legs, which makes the body move or swim in the water. It mainly includes competitive swimming and practical swimming. All kinds of swimming have different swimming methods and technical requirements. In addition, some sports, such as diving, water polo, diving and synchronized swimming, are all based on swimming.

Swimming is one of the sports that men, women and children like. Ancient swimming, according to the existing historical data, is a consistent view at home and abroad, which originated from people living in rivers, lakes and seas in ancient times. In order to survive, they must catch waterfowl and fish as food in the water, and gradually learn to swim by observing and imitating the swimming movements of fish, frogs and other animals.

China has a long history and a vast territory. Recording swimming began five thousand years ago. However, in recent decades, swimming has developed as a sport.

1, topic Should be able to summarize the most important content of the whole paper, concise and eye-catching, generally no more than 20 words. Abstract and key words of the paper.

2. The abstract of the paper should explain the main points of the paper. Explain the research purpose, research methods, achievements and conclusions of this paper. Keep the basic information of the original paper as much as possible and highlight the creative achievements and new ideas of the paper. It should not be a simple list of chapter titles. About 200 words is appropriate. Key words are the key words that can best reflect the theme of the paper, generally 3-5.

3. Contents. It is not only the outline of the paper, but also the subtitle of the paper, so you should mark the corresponding page number.

4. Introduction (or preface). The content should include the present situation at home and abroad in this research field, the problems to be solved in this paper, and the theoretical significance and practical value of this research work in economic construction, scientific and technological progress and social development.

5, the text. It is the main body of graduation thesis.

6. Conclusion. The conclusion of the paper should be clear, concise and complete, and should clarify one's own creative achievements or new ideas and their significance in this field.

7. References and notes. According to the number of documents or comments cited in the paper, it is listed after the main body of the paper and before the references. Charts or data must indicate the source and provenance.