21世纪大学实用英语综合练习 1PDF电子书下载

Part Ⅰ Text Exercises 1

Unit 1 1

Part Ⅱ Exercises for PRETCO 9

Unit 2 18

Part Ⅰ Text Exercises 18

Part Ⅱ Exercises for PRETCO 25

Unit 3 35

Part Ⅰ Text Exercises 35

Part Ⅱ Exercises for PRETCO 42

Unit 4 51

Part Ⅰ Text Exercises 51

Part Ⅱ Exercises for PRETCO 59

Test yourself(for Units 1-4) 67

Part Ⅰ Text Exercises 77

Unit 5 77

Part Ⅱ Exercises for PRETCO 84

Unit 6 93

Part Ⅰ Text Exercises 93

Part Ⅱ Exercises for PRETCO 100

Unit 7 108

Part Ⅰ Text Exercises 108

Part Ⅱ Exercises for PRETCO 115

Unit 8 125

Part Ⅰ Text Exercises 125

Part Ⅱ Exercises for PRETCO 134

Test yourself(for Units 5-8) 144

Test yourself(for PRETCO—Level B) 153