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广西国品文化 2023~2024学年新教材新高考桂柳模拟金卷(四)数学.考卷答案试卷答案
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书面表达Onepossibleversion:APromiseIMadeThreeyearsago.ImadeapromisethatImuststudyabroadforhighereducationdegree.IthinkoneofthereasonswasthatIdidn'twantmyparentsdown.Anotherreasonisthatbeingabletostudyabroadisindeedagoodopportunitytobroadenmyhorizon.Istillthinkitwasreallyaroughexperiencetokeepthispromise,sincebreakingthebarriers,suchaslanguage,andacademicperformance,wasn'teasy.Tomakeitonestepclosertoreality,Iliterallyburnedthemidnightoilforeveryimportantexamatschool.Havingmadeapromise,Imustcarryitthrough.Maybeitwillberealizedinthefuture.听力部分录音材料
B.当x=x2时,弹簧的弹性势能为mg(h+mgkC.若x3-x2=x2-x1,,则x=x3时,小球的动能为mghD.若x2-x2=x2-x1,x=x3时,弹簧的弹性势能为m^2g^2k
