Unit 1 1
Passage 1 Collections of Footwear 1
Passage 2 Why Is Pink or Purple a Color for Girls and Blue or Brown for Boys？ 3
Passage 3 Professional Education in America 5
Passage 4 Can You Eat Yourself to Death？ 7
Unit 2 12
Passage 1 Frida Kahlo 12
Passage 2 Chinese Kites 14
Passage 3 Arctic Shutters 16
Passage 4 Your Curious Behaviors and What They Reveal 18
Unit 3 22
Passage 1 Welcome to Your Future Life！ 22
Passage 2 Rabbits History 24
Passage 3 The Difference Between a Liquid and a Gas 27
Passage 4 Norovirus（诺如病毒）：The Perfect Human Pathogen（病原体） 29
Unit 4 33
Passage 1 Top 6 Unusual Guinness World Records 33
Passage 2 Communicational Conflicts 36
Passage 3 The Convenience of E-Library 39
Passage 4 Generation Naive：Why Young People Can't Help Falling for Strangers Online？ 41
Unit 5 45
Passage 1 Travels with Dad 45
Passage 2 Nauru 48
Passage 3 Newest Method of Searching for Minerals 51
Passage 4 How to Get a Golden Retriever？ 53
Unit 6 58
Passage 1 Oxford English Dictionary 58
Passage 2 Peters and His Works 61
Passage 3 Working-Class Living-Room 64
Passage 4 The Iceman—Kimi Raikkonen 66
Unit 7 71
Passage 1 Samsung Electricity 71
Passage 2 Newspaper 73
Passage 3 No-Paying Entertainment 75
Passage 4 Earthquake—Can Scientists Predict Killer Earthquakes 77
Unit 8 81
Passage 1 Percival and Laura 81
Passage 2 Finally，a Cell Phone 83
Passage 3 Social Customs and Behaving Manners 86
Passage 4 Will We Run out of Water？ 88
Unit 9 92
Passage 1 Mirror Neurons 92
Passage 2 Holidays'Function 94
Passage 3 Depressive Illness 97
Passage 4 Space—Our Future in Space：It Has Already Begun！ 99
Unit 10 104
Passage 1 Three Boys and a Dad 104
Passage 2 Eating and Disease 106
Passage 3 Food That Provides Energy 108
Passage 4 The Earth 110
APPENDIX 115