Mostofusknowtostaylowtothefloorifwe'recaughtinafire,or...
问题详情： Mostofusknowtostaylowtothefloorifwe'recaughtinafire,orheadtothebasementifatornado'scoming,orboardupthewindowsinahurricane.But,becauserelativelyfewofuslivealongfaultlines,themassiveearthqua...