[今日更新]2024年陕西省初中学业水平考试信息卷(B)试卷类型:A.物理试卷答案

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[今日更新]2024年陕西省初中学业水平考试信息卷(B)试卷类型:A.物理试卷答案试卷答案

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photosynthesis(光合作用)，Asaresult,htherightquestions.Boostyour8sothatyoucantreesareshorterandgrowslowly.aswellunderstandmoreandachieveeffectivelistening.3deathrateListeningmeansweshouldrespond,thatweClimatechangealsoincreasesthe4ofshouldbetouched,thatwhatwehearhasa(n)droughtsandwildfires.Afterwildfires,itk9onus.Ibelievethathistory10itselfwhilefortheforestsystemsto5andinsomeonlybecausenoonelistensthefirsttime.cases,theforestsare6permanently.TreesYouweregiventwoears,butonlyonemouth,whichisagentlehintthatweshouldlistenthatarestressedarealso7toattacksbybacteria().Intropicalforests,vinesthatusemore,becauseGodknewthatlisteningwastwiceas11astalking.Listeningisthekeybuildingthetreesasgcanoftenchokethetreesandblockineffectivecommunications.Goodlisteningrobthemofnutrients.Finally,humanshave9skillsarecrucial,aslisteningisthefundamentaltheforestlandscapethroughlogging.Whentreesare12ofallinformation.replantedonthesoil,theywillnevergrowaslargeasIsn'tnowthetimetogivethegiftoflisteningthe10treesthatwerecutdown.tothoseaboutyou?Giventhemyour13Astheseforestsdisappear,speciesthatonceattention.UseyourGodgiven14tobecomeacalledthem“home”areforcedtochange,ll12,somebetterlistener.Forme,I'mgoingtoputintothevarietyofthosesystems.15whatIbelieveinmyheartandbecomeaendangeredspeciesareunableto13anddie.betterlistener.Old-growthforestsaredisappearinginallregions1.A.soundsB.wordsofourworld.Whenforestsdie,youngerforestsC.gesturesD.movementsthatarereestablishedinthesameareagrowback2.A.conceptionB.planweakerandsmaller14poorvegetation.WithC.purposeD.requirementtreesdyingincreasinglyandcontinuously,will3.A.activeB.passivefuturegenerations15outonthewondersofC.basicD.uselessforests?4.A.argueB.quarrel1.A.protectC.discussB.preventD.obeyC.save5.A.adviceD.freeB.attentionC.loveD.help2.A.movementB.situation6.A.askB.learnC.processD.operationC.try3.A.higherD.listenB.firmer7.A.SendC.lighterB.PresentD.smallerC.Predict4.A.choiceD.DesignB.measure8.A.courageC.energyB.confidenceC.qualificationD.chance5.A.growB.rescue9.A.impactD.knowledgeC.recoverD.declineC.emotionB.connection10.A.makesD.difference6.A.ignoredB.lostB.failsC.hurtD.leftC.repeats11.A.interestingD.destroys7.A.accessibleC.acceptableB.enjoyableC.muchB.hard8.A.attentionD.favourable12.A.resourceD.longC.trustB.commandC.sourceB.material9.A.frightenedD.support13.A.considerateD.elementC.ruinedB.paidC.extraB.wide10.A.commonD.wasted14.A.informationD.entireB.talentsC.distantB.originalC.messagesD.strong15.A.effectD.ideas11.A.affectingB.positionC.forgettingB.improvingC.practicePassage3D.service12.A.BesidesD.reflectingC.OtherwiseB.SurprisinglyAsourEarth'stemperaturewarmsup13.A.devoteD.Unfortunatelybecauseofclimatechange,itishavingunexpectedB.keepeffectsonourworld'sforests.WhentemperaturesC.adapt14.A.duetoD.leadrise,treesclosetheirskinsto1thelossofwater,andthis,inturn,slowsdownthe2ofC.insteadofB.inadditionto15.A.passD.inspiteof56英语》C.breakB.missD.bring我们出须接受失望，因为它是有限的，但千万不可失去希望，因为它是无穷的

13.(12分)风洞训练可以模拟高空跳伞下落过程中人体所承受气流的状态,是跳伞初学者学习跳伞的必要项目。在空中运动的物体受到的空气阻力F=12CdSv^2(式中S为迎风面积,Cd为风阻系数),与物体的迎风面积、光滑程度和整体形状等有关。已知某跳伞运动员的质量M=65kg,空气密度ρ1.29kg/m^3,重力加速度g取10m/s^2。,(结果保留两位有效数字)(1)如图甲,风洞竖直向上送风,当该运动员身体的迎风面和S=0.63m^2Cd动员悬浮在风洞内,C.取0.326,求此时风洞内的风速v的大小。时,该运vCd(2)在室外高空跳伞时,C取1.26,跳伞装备的总质量m=20kg,打开的降落伞和m=2

14.在“探究电流和电压的关系”和“探究电流和电阻的关系”两个实验中,下列说法正确的是AA.两个实验多次实验的目的都是为了得到普遍性实验结论B.探究电流和电压的关系中,滑动变阻器的作用主要是控制定值电阻两端电压一定C.在探究电流和电阻的关系中,滑动变阻器的作用主要是改变定值电阻两端的电压D.两个实验都用到的实验探究方法是转换法控制变量法.

12.如图所示,电路中电源两端电压U保持不变。当开关S1闭合、S2断开,滑动变阻器接入电路中的电阻为RA时,电压表的示数为U1,电流表的示数为I1,,电阻R1的电功率为P1,,电阻RA的电功率为PA;当开关S1、S2都闭合,滑动变阻器接人电路中的电阻为RB时,电压表的示数U2为2V,,电流表的示数为I2,,电阻RB的电功率为PB当开关S1闭合、S2断开,滑动变阻器滑片P位于最右端时,电阻R2的电功率为8W。。已知R1:R2=2:1,P1:PB=110,U1:U2=3:2。。则A.电流I1:I2=2:1B.电源两端的电压U为12VC.电阻R2的阻值为2ΩD.电阻RA的电功率PA为6W