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考研英语阅读理解-(三)(总分：100.00，做题时间：90分钟)一、{{B}}SectionⅠReadingComprehension{{/B}}(总题数：4，分数：100.00)SchoolshootingsliketheonethatdevastatedthesmallGermantownofWinnendenon11Marchmaynotjustberandomactsofviolence.AreviewofsimilarkillingsintheUS,andofgeneralschoolaggression,indicatesthatsomeschoolsaremorelikelythanotherstobebreedinggroundsforkillers.Schoolscan'tbeblamedforanindividual'sactions,buttheymaybeabletoreducethechanceofakilleremergingfromtheirgates.Therarenatureofschoolshootingsmakesthemtoughtostudyinasystematicway.ButbetweenJuly1999andJune2006therewereeightschoolshootingsinwhichmorethanonepersonwaskilledintheUSalone.Suchcasestudiesallowresearcherstostartdrawingsomeparallels.TraciWikeandMarkFraserattheUuiversityofNorthCarolina,ChapelHill,reviewedstudiesofshootingincidents,suchasthose