The political and historical characteristics of Britain. Official website, a website of Grade Three, shows that Grade Seven is Grade One, and the Ministry of Education stipulates that there are seven main subjects for Grade Seven students, namely, Chinese, Mathematics, English, Geography, Biology, History and Politics. Therefore, Chinese, mathematics, English politics and history are the main subjects in grade seven. The seventh grade is the primary stage of junior high school. In addition to the main subjects, the school has also set up courses and comprehensive practical activities that combine sub-subjects with integration.