1. Textbooks: The textbooks used in Class A are usually New Comprehensive College English Course and New College English Listening and Speaking Course, while the textbooks used in Class B are usually New Horizon College English Reading and Writing Course and New Horizon College English Listening and Speaking Course.
2. Mode of class: Class A is generally taught by teachers, with some group discussions and oral practice. Class B mode usually focuses on students' discussion and self-study, and the teacher only gives guidance and answers, emphasizing students' initiative and participation.
3. Test difficulty: The English test in Class A is relatively difficult, with high requirements on vocabulary, grammar, reading, writing and listening. The English test in Class B is relatively less difficult, but it is also challenging.
4. Learning objectives: Class A aims to cultivate students' comprehensive English quality and application ability, and prepare for future postgraduate English study and study abroad. Class B pays more attention to cultivating students' self-study ability and teamwork ability, and at the same time improves students' English level.