Lesson One 1
Unit One 1
Lesson Two 7
Lesson Three 13
Lesson One—Three 19
Unit Two 26
Lesson One 26
Lesson Two 32
Lesson Three 38
Lesson One—Three 45
Mid-examination 52
Lesson One 59
Unit Three 59
Lesson Two 65
Lesson Three 71
Lesson One—Three 78
Unit Four 85
Lesson One 85
Lesson Two 91
Lesson Three 97
Lesson One—Three 103
Final examination 111
Listening Tapescripts and the Keys to the Lessons 118