文档介绍：;butnevertheless,about10childrenarekilledeachyearridingonlargeschoolbuses,,however,thenation'sschoolchildrenaretransportedtoandfromschoolsafely. Eventhoughthenumberofschoolbuscasualties(死亡人数)isnotlarge,,peoplearedividedaboutwhatneedstobedone—particularlywhetherseatbeltsshouldbemandatory(强制性的)• Supportersofseatbeltsonschoolbusesarguethatseatbeltsarenecessarynotonlytoreducedeathandinjury,,theypointout,isthatseatbeltshelpkeepchildrenintheirseats,awayfromthebusdriver. OpponentsofseatbeltinstallationsuggestthatchildrenarealreadywellprotectedbytheschoolbusesthatfollowtheNationalHighwayTrafficSafetyAdministration's(NHTSA)'twearseatbeltsanyway,andthattheymaydamagethebeltsorusethemasweaponstohurtotherchildren. ,mitteesuggestedthatraisingseatbacksfourinchesmayhavethesamesafetyeffectivenessasseatbelts. ThereportsponsoredbytheDepartmentofTransportationattherequestofCongress,reviewsseatbeltsextensivelywhiletakingabroaderlookatsafetyinandaroundschoolbuses. ,childrenkilledoutsidebusesintheloadingzonesareabout_______. "aredivided"inParagraph ,whohasthegreatestdegreeofcontroloftheschoolbuses'"safety"? . . . . .