21世纪大学英语泛读教程 第4册PDF电子书下载

Unit One 1

1．Forecasting Life in the 21 st Century 1

2．Why Java Is Hot? 7

3．Bomto Win 14

Unit Two 20

4．How to Grow Old 20

5．Set Your Body s Time Clock to Work for You 26

6．Population: the Awkward Truth 32

Unit Three 39

7．Jobs without Takers 39

8．In Memory of the Challenger Astronauts 45

9．The Plot to Kill Hitler 52

Unit Four 59

10．The Fifth Force 59

11．Mother, I Wish I d Known You 65

12．George Washington 72

Unit Five 79

13．What Is Virtue? 79

14．Taking Stock of Your Family Finances 87

15．The Teacher Who Changed My Life 93

16．Newspapers in Great Britain 100

Unit Six 100

17．The Future of International Trade 106

18．The Real American Dilemma 113

Unit Seven 125

19．To Err Is Human 125

20．Buy by Wire 133

21．Nabbing the Pirates of Cyberspace 140

Unit Eight 147

22．Family Disorganization 147

23．A Secret for Two 155

24．The Personality Genes 162

Unit Nine 169

25．Acting to End a Life Is Sometimes Justified 169

26．Identi-Kit 176

27．Money s Electronic Future 184

Unit Ten 193

28．Changes in the Atmosphere 193

29．Learning for Tomorrow (1) 202

30．Learning for Tomorrow (2) 209

Glossary 216

Answer Key 245