1. Title: accurate, concise, eye-catching and novel.

2. Table of Contents: A table of contents is a brief list of main paragraphs in a paper. (Essays don't need to be listed in the table of contents)

3. Abstract: It is an excerpt from the main content of the article, which requires short and pithy content. The number of words can be as few as dozens, and it is advisable not to exceed 300 words.

4. Keywords or subject words: keywords are selected from the title, abstract and text of the paper, and are words with substantive significance to express the central content of the paper. Keywords are words used by computer systems to index the content characteristics of papers, which are convenient for information systems to collect and provide readers with retrieval. Generally, 3-8 words are selected as keywords for each paper, and a new line is set at the bottom left of the "abstract". Subject words are standard words. When determining the subject words, the paper should have a theme, and according to the indexing and collocation rules, it should be converted into standardized words in the subject glossary.