Module 1
Unit 1
Unit 2
Unit 3
Assessment for Module 1
Module 2
Unit 1
Unit 2
Unit 3
Assessment for Module 2
Mid-term Assessment
Module 3
Unit 1
Unit 2
Unit 3
Assessment for Module 3
Module 4
Unit 1
Unit 2
Unit 3
Assessment for Module 4
Final Assessment
附录1：知识点梳理
附录2：Keys & Tapescripts
