Supporting materials can be found in the following ways: 1. By consulting library books and reading extensively, we can get rich factual arguments and rational arguments, thus injecting "flowing water from the source" into argumentative writing. Books in the library are the main source of traditional reference documents, which are more convenient and affordable than other traditional methods. Second, through the authoritative network official website search. 1, China CNKI is an authoritative source of online literature. Most colleges and universities have cooperation with China CNKI, and they can download literature for free at school, but they need to charge outside the school. 2. Using advanced retrieval in VIP journals can accurately find the required information. Website:/; Search method: enter the document name or keywords in the search area on the home page. 3. Wanfang Database: Website:. Hk/ Search Method: Click Advanced Search next to Home Search to enter the search area. 4. Baidu Academic: Website:/Search Method: The search engine tries to search and enters the name in the search field. 5. Other literature sources: In addition to the above-mentioned commonly used authoritative organizations, other majors can be searched in the following ways:

(1) Open the world;

2 superstar books;

(3) electronic diagram;

4 reading language;

⑤ An Baili Cloud;

⑥ Global cable;

⑦ Three agricultural databases;

⑧ Foreign language learning resource database, etc.