Lesson One 1
Unit One 1
Lesson Two 8
Lesson Three 16
Lesson One—Lesson Three 24
Unit Two 33
Lesson One 33
Lesson Two 41
Lesson Three 49
Lesson One—Lesson Three 56
Mid-exam 64
Lesson One 72
Unit three 72
Lesson Two 79
Lesson Three 86
Lesson One—Lesson Three 93
Unit Four 101
Lesson One 101
Lesson Two 108
Lesson Three 115
Lesson One—Lesson Three 123
Final-exam 131
Listening Tapeseripts and the Keys to the Lessons 139