Mostofusknowtostaylowtothefloorifwe'recaughtinafire,or...
問題詳情： Mostofusknowtostaylowtothefloorifwe'recaughtinafire,orheadtothebasementifatornado'scoming,orboardupthewindowsinahurricane.But,becauserelativelyfewofuslivealongfaultlines,themassiveearthqua...