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2023-2024学年重庆市高二考试12月联考(24-196B)数学.考卷答案试卷答案
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综合能力评估试题(2)参考答案及部分解析参考答案1-5BCBCA6-10ABBAC11-15ABCBC16-20CABAC21-25DCBCC26-30CAAAC31-35DCABD36-40DGCAB41-45DBCBD46-50ADCDA51-55CACDB56.created57.which58.originally59.as60.tosolve61.its62.a63.countries64.played65.traditional写作第一节Onepossibleversion:DearVera,I'mwritingtorecommendHi,Mom,whichisregardedasoneofthemostsuccessfulcomediesinChina.DirectedbyJiaLing,oneofthetopwomencomediansinChina,thistime-travelcomedystarsJiaasadevoteddaughter,whoisdeeplysaddenedbyhermother'saccidentaldeathandfindsherselftransportedbackto1981,whereshemeetshermotherandattemptstochangeherfateThefilmhasbeenhighlypraisedforitsinterestingstoryandheartfeltemotions.It'sworthyofyourattention.Hopeyouenjoyit!Yours,LiHua第二节Onepossibleversion:Iclosedmyeyes,coveredmyears,andshrankaslowasIpossiblycouldinmychair.Afterafewseconds,though,ifoundenoughcouragetouncoveroneearandlookthroughahalf-openeyeThat'swhenIsawtheexpressionofgreatjoyonmymom'sface.Shewashavingsomuchfun.Icouldn'thelpsmiling.Myclassmatesclappedandcheered,andIheardsomeonesay,"Wow!Arizona'smotherisprettytalented!"NotonlydidmymomturnouttobemorethanalittleOKatperforming,butshewasalsogoodatteachingusthesongandthedancesteps.Bythetimeofthefair,Iwasactuallyproudofherforputtingherselfoutthereforus."I'mreallygladyouhelpedmyclasswiththeperformance,"IsaidtomymomaswedrovehomefromWinterFair.Mymomreachedbackandheldmyhand."Thanksforsayingthat,Arizona.Icanseewhyyoumighthavebeenembarrassed,butIhadsuchagreattime."部分解析阅读第一节A篇
M=0.8kg15.(18分)如图所示,质量M=0.8kg的平板车静止在光滑水平地面上,质量my=0.2kg的小m1=0.2kg物块位于平板车的左端。不可伸长的轻质细绳的长度l=0.9m,一端悬于小物块正上方高l=0.9m,为0.9m的O点,另一端系一质量m,=0.1kg的小球。现将小0.9mm0=0.1kg小球球拉至悬线与竖直方向成60^60°角位置由静止释放,小球到达最低点时与小物块的碰撞时间极短,且无能量损失,最后小L=1.6m,物块恰好未从平板车上滑落。已知平板车的长度L=1.6m,重力加速度大小g=10m/s²,g=10m/s^2,小球和小物块均可视为质点。(1)求小球与小物块碰后瞬间,小物块的速度大小v;v1;(2)求小物块与平板车之间的动摩擦因数;(3)若平板车的长度可以调节,在其他条件不变的情况下,要使小物块离开平板车时小物块的速度是平板车速度的两倍,求调节后平板车的长度x。x060^mm0M
