Maybeten-year-oldElizabethputitbestwhenshesaidtoherfather,“But,Dad,youcan’tbehealthyifyou’redead?”Dad,inahurrytogethomebeforedarksohecouldgoforarun,hadforgottentowearhissafetybelt——amistake75%oftheUSpopulationmakeeveryday.Thebigquestioniswhy.Therehavebeenmanymythsaboutsafetybeltseversincetheirfirstappearanceincarssomefortyyearsago.Thefollowingarethreeofthemostcommon.MythNumberOne:It’sbesttobe“thrownclear”ofaseriousaccident.Truth:Sorry,butanyaccidentseriousenoughto“throwyouclear”isalsogoingtobeseriousenoughtogiveyouaverybadlanding.Andchancesareyou’llhavetraveledthroughawindshield(挡风玻璃)ordoortodoit.Studiesshowthatchancesofdyingafteracaraccidentaretwenty-fivetimesgreaterincaseswherepeopleare“thrownclear.”MythNumberTwo:Safetybelts“trap”peopleincarsthatareburningorsinkinginwater.Truth:Sorryagain,butstudiesshowthatpeopleknockedunconscious(昏迷)duetonotwearingsafetybeltshaveagreaterchanceofdyingintheseaccidents,Peoplewearingsafetybeltsareusuallyprotectedtothepointofhavingaclearheadtofreethemselvesfromsuchdangeroussituations,nottobetrappedinthem.MythNumberThree:Safetybeltsaren’tneededatspeedsoflessthan30milesperhour(mph).Truth:Whentwocarstravelingat30mphhiteachother,anunbelteddriverwouldmeetthewindshieldwithaforceequaltodivingheadfirstintothegroundfromaheightof10meters.小题1:WhydidElizabethsaytoherfather,“ButDad,youcan’tbehealthyifyou’redead”?
becauseyou_____.