Unit 1 1
Part Ⅰ Text Exercises 1
Part Ⅱ Exercises for CET-4 9
Unit 2 20
Part Ⅰ Text Exercises 20
Part Ⅱ Exercises for CET-4 27
Unit 3 38
Part Ⅰ Text Exercises 38
Part Ⅱ Exercises for CET-4 45
Unit 4 57
Part Ⅰ Text Exercises 57
Part Ⅱ Exercises for CET-4 64
Test yourseef(for Units 1-4) 76
Unit 5 84
Part Ⅰ Text Exercises 84
Part Ⅱ Exercises for CET-4 92
Unit 6 104
Part Ⅰ Text Exercises 104
Part Ⅱ Exercises for CET-4 111
Unit 7 123
Part Ⅰ Text Exercises 123
Part Ⅱ Exercises for CET-4 130
Unit 8 142
Part Ⅰ Text Exercises 142
Part Ⅱ Exercises for CET-4 150
Test yourseef(for Units 5-8) 163
Test yourseef(for CET-4) 171