Morethan6000childrenwereexpelled(开除)fromUSschoolslastyearforbringing gunsandbombstoschool,theUSDepartmentofEducationsaidonMay8. Thedepartmentgaveareportontheexpulsions(开除)assayinghandgunsaccountedfor58percentofthe6093expulsionsin2005—2006,against7percentforrifles(步枪)orshotgunsand35percentforothertypesoffirearms.“thereportisadearsignthatournation’spublicschoolsarecrackingdown”onstudentswhobringgunstoschool,”EducationSecretaryRichardRieysaidinastatement.“Weneedtobetough-mindedaboutkeepinggunsoutofourschoolsanddoeverythingtokeepourchildrensafe.”InMarch2006,a1l-year-oldboyanda13-year-oldboyusinghandgunsandriflesshotdeadfourchildrenandateacherataschoolinJonesboro,Arkansas.InOctober,twowerekilledandsevenwoundedinashootingataMississippischool.Twomonthslater,a14-year-oldboykilledthreehighschoolstudentsandwoundedfiveinDaducab,Kentucky.“Mostoftheexpulsions,56percentwerefromhighschools,whichhavestudentsfromaboutage13,34percentwerefromjuniorhighschoolsand9percentwerefromelementaryschools”,thereportsaid.小题1:FromthefirstparagraphwecaninferthatintheUSschools______.