| 人类具有强烈的自卫本能，当自身安全受到威胁时，人们会很自然地采取措施来降低风险。当身处一种无法掌控的境地时，人们的害怕心理就会升级为恶慌…… |
| Unit 1 Lesson 1 Smoke，Fire，and Death Lesson 2 An Unexpected Explosion Lesson 3 The Fall of Saigon Lesson 4 Firetrap! Lesson 5 A Deadly Plunge Lesson 6 Nightmare in the Twin Towers Unit Summarizing 1 Unit 2 Lesson 7 Stay Out of the Water! Lesson 8 A Sniper in the Tower Lesson 9 The Night the Dam Let Go Lesson 10 Flood in Mozambique Lesson 11 Tragedy in the Baltic Sea Unit Summarizing 2 Unit 3 Lesson 12 A Horrible Way to Die Lesson 13 A Strangler Among Us Lesson 14 The Richard Riot Lesson 15 A Volcano Wakes Up Lesson 16 Death Rides the Subway Unit Summarizing 3 Appendix Answer Key |
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