According to dolphin ai query, dolphin self-study is an online learning platform, which provides a variety of courses and learning resources. Dolphin self-taught examination pays attention to the cultivation of students' autonomous learning ability, and helps students improve their learning effect and interest through various learning methods and curriculum settings. Dolphin self-study course covers many fields, each course is taught by professional teachers, and rich teaching materials and exercises are provided to help students master knowledge points and skills.