Unit1. 1
TEXT: Trust 1
PASSAGE: Darkness at Noon 8
Unit2. 12
TEXT: The Study of Biology 12
PASSAGE: The American Family:Then and Now 19
Unit3. 23
TEXT: Managing for Progress 23
PASSAGE: What Kind of Language Are Yor Using? 29
Unit4. 33
TEXT: Beach Walk 33
PASSAGE: Mom,How Did You Meet Dad? 40
TEXT: The Paleolithic Age 43
Unit5. 43
PASSAGE: Children and Television 50
Unit6. 55
TEXT: Sale of Kidney Prompt New Laws and Debate 55
PASSAGE: Marriage in Iran and America 62
Unit7. 67
TEXT: It s Never Too Late for Success 67
PASSAGE: Off the Edge 75
Unit8. 78
TEXT: On Friendship(Ⅰ) 78
PASSAGE: Too Many Bosses Spoil the Job 85
Unit9. 89
TEXT: On Friendship(Ⅱ) 89
PASSAGE: School vs Education 96
TEXT: Rudolph s Reindeer Cousins 100
Unit10. 100
RASSAGE: I Want a Wife 108
Unit11. 111
TEXT: Going My Way 111
PASSAGE: How to Keep Your Wallet Safe 119
Unit12. 123
TEXT: Women and Advertisement 123
PASSAGE: Blue is the Sky 131
Unit13. 134
TEXT: Historic Extinctions 134
PASSAGE: Overpopulation and Social Behavior 141
Unit14. 145
TEXT: Is Speed Reading Overrated? 145
PASSAGE: Endangered Species: Birds 153
TEXT: The Lobster 157
Unit15. 157
PASSAGE: The Wood Stove 164
Unit16. 168
TEXT: Storm Over a Deadly Downpour 168
PASSAGE: What Keeps an Airplane up? 176
Unit17. 180
TEXT: The Variety of Conversations 180
PASSAGE: The Mindset of Health 188
Unit18. 193
TEXT: The Anatomy of a Headache 193
PASSAGE: Who Lives Longer 201
Appendix 206
Key to Exercises 206