Unit 1Lead-in & Listening and speaking Unit 1Reading and writing Unit 1Language in use & Vocabulary practice Unit 1Supplementary reading 单元检测卷Unit 1 Unit 2Lead-in & Listening and speaking Unit 2Reading and writing Unit 2Language in use & Vocabulary practice Unit 2Supplementary reading 单元检测卷Unit 2 Unit 3Lead-in & Listening and speaking Unit 3Reading and writing Unit 3Language in use & Vocabulary practice Unit 3Supplementary reading 单元检测卷Unit 3 Unit 4Lead-in & Listening and speaking Unit 4Reading and writing Unit 4Language in use & Vocabulary practice Unit 4Supplementary reading 单元检测卷Unit 4 Unit 5Lead-in & Listening and speaking Unit 5Reading and writing Unit 5Language in use & Vocabulary practice Unit 5Supplementary reading 单元检测卷Unit 5 Unit 6Lead-in & Listening and speaking Unit 6Reading and writing Unit 6Language in use & Vocabulary practice Unit 6Supplementary reading 单元检测卷Unit 6 Unit 7Lead-in & Listening and speaking Unit 7Reading and writing Unit 7Language in use & Vocabulary practice Unit 7Supplementary reading 单元检测卷Unit 7 Unit 8Lead-in & Listening and speaking Unit 8Reading and writing Unit 8Language in use & Vocabulary practice Unit 8Supplementary reading 单元检测卷Unit 8 Unit 9Lead-in & Listening and speaking Unit 9Reading and writing Unit 9Language in use & Vocabulary practice Unit 9Supplementary reading 单元检测卷Unit 9 Unit 10Lead-in & Listening and speaking Unit 10Reading and writing Unit 10Language in use & Vocabulary practice Unit 10Supplementary reading 单元检测卷Unit 10