本产品为《新概念英语 4 录音练习手册》配套磁带4盘。1/4 A：Unit 1 Lesson 1 - Lesson 6 B：Unit Lesson 7 - Unit 2 Lesson 12 2/4 A：Unit 2 Lesson 13 - Unit 3 Lesson 19 B：Unit 3 Lesson 20 - Unit 4 Lesson 25 3/4 A：Unit 4 Lesson 26 - Lesson 31 B：Unit 4 Lesson 32 - Unit 5 Lesson 37 4/4 A：Unit 5 Lesson 38 - Unit 6 Lesson 43 B：Unit 6 Lesson 44 - Lesson 48.
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