2. SAT 1 is divided into composition and no composition. SAT with essays should be accurately SAT 1 with essays, which means SAT 1 with composition in Chinese. Generally, when looking for a professional newspaper, such as Mi Bao, you must say that SAT 1 with composition is enough;
3.SAT2 refers to the SAT subject examination, including Math 1, Math 2, Physics, Chemistry and History. The specific registration depends on how many subjects you need to apply for, and the registration fee in official website varies according to the number of subjects.