Contents 1
Unit 1 The Riddle of Time 1
Unit 2 The Power of Big Ideas 9
Unit 3 Helping Kids on Their Journey Through Junior High 16
Unit 4 List of Greatest Inventions Reflects a Wondrous World 26
Unit 5 Brushing Up1 33
Unit 6 Polite，Yes；But Not Soft 41
Unit 7 Red Seas？ 48
Unit 8 The Struggle to Creative Creativity 55
Unit 9 Lost on the Campus 62
Unit 10 A Great Step Backward 71
Unit 11 Finding New Life after Columbine 78
Unit 12 Objectives of the Law 86
Unit 13 The Worst and the Brightest 94
Unit 14 Of Haves and Have-Nots 102
Unit 15 When You’re Too Shy 110
Unit 16 Are Your Student Clubs Treated Equally？ 119
Unit 17 Helping Kids Feel Safe，Valued，and Competent 128
Unit 18 Disease Women Should Fear Most 136
Unit 19 Women and Physics 145
Unit 20 Water Issue in Canada 155
Unit 21 Recent Revelations1 About the AntsColony 163
Unit 22 Invasive Exotics：Why Should We RemoveThem？ 170
Unit 23 The Concept of Droughts 178
Unit 24 They’re Flying High 186
Unit 25 A Cure for Sick Building Syndrome 194
Unit 26 A Big Song and Dance 203
Unit 27 The History of Government Regulation of Busines 212
Unit 28 A Bit of Straight Talk 221
Keys to the Exercises 229
Vocabulary 263