21世纪大学实用英语 综合练习 4 全新版PDF电子书下载

Unit 1 HalitsPart Ⅰ Text Exercises 1

Part Ⅱ Exercises for CET-4 7

Unit 2 Life TipsPart Ⅰ Text Exercises 12

Part Ⅱ Exercises for CET-4 18

Unit 3 Business the Easy WayPart Ⅰ Text Exercises 27

Part Ⅱ Exercises for CET-4 33

Unit 4 Money MattersPart Ⅰ Text Exercises 37

Part Ⅱ Exercises for CET-4 43

Test yourself(for Units 1-4) 52

Unit 5 Rising starsPart Ⅰ Text Exercises 62

Part Ⅱ Exercises for CET-4 68

Unit 6 From Failure to SuccessPart Ⅰ Text Exercises 72

Part Ⅱ Exercises for CET-4 78

Unit 7 Learning a Second LanguagePart Ⅰ Text Exercises 87

Part Ⅱ Exercises for CET-4 93

Unit 8 TechnologyPart Ⅰ Text Exercises 98

Part Ⅱ Exercises for CET-4 105

Test yourself(for Units 5-8) 113

Test yourself(for CET-4) 123