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陕西省2023~2024学年高三第一学期12月模拟测试卷(243439Z)物理试卷答案试卷答案

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CNearly10millionpeopleworldwidelivewithParkinson'sdisease.WhileParkinson'sisincurable,someofitsworstsymptomscanberelievedandcontrolledusingmedications.Amajorproblemofgettingeffectivetreatmentattherighttimeisidentifyingthediseasesoonenough,beforepatientsexperiencethesymptomsbroughtonbyirreversible（(不可逆转的)neuronloss.Butscientistsmighthavejustthethingtochangethesituation.Anditinvolvesanose.InastudypublishedinthejournalACSOmega,researchersfromChina'sZhejiangUniversitycreatedan"e-nose,"aportabledevicethatcandetectbodysmellsspecifictoParkinson'spatients.ItmaycomeasasurprisetolearnParkinson'spatientshavetheirownsmells.ButafteraretirednurseinScotlandmadeheadlinesin2015foraheightenedsenseofsmellthatledtoherownhusband'sParkinson'sdiagnosis,scientistshavebeentryinghardtocreateadevicethatcouldsmellthediseasebeforephysicalsymptomsstarttoshow.Overtheyears,scientistshavefoundpeoplewithParkinson'stendtoproducemoresebum(thantheaverageperson.Thissebummixeswithotheroverproducedsubstancestoproducecertain,uniquesmells.Totrackdownthesesmells,theZhejiangUniversityresearchersswabbed(用拭子擦拭)theupperbacksof31Parkinson'spatientsand32healthyvolunteers.Usingmachine-learningsoftware,theywereabletoidentifythreesmellcompoundsthathealthyvolunteerslacked.Theresearchersthentestedthee-noseonsebumtakenfrom12Parkinson'spatientsand12healthypeople.Thedevicewasfoundtobeabout71percentaccurateindistinguishinghealthysebumfromParkinson'ssebum.Theseareencouragingfindings,butbeforethee-noseisreadyforclinicaluse,theteamneedstotestitonmanymorepeopletoimprovetheaccuracyofthemodels.Theywillalsoneedtotestwhetherfactorslikeraceaffectthee-nose'sperformanceinanyway.Butfornow,asthenumberofpeoplelivingwithParkinson'sintheU.S.isexpectedtoriseto1.2millionby2030,anosemightbethebestoptiontodetectthisdisease.28.WhatmakesitdifficultforParkinson'spatientstogeteffectivetreatment?A.Itsmedicationsareinshortsupply.B.Itinvolvesirreversibleneuronloss.C.Itsearlysignsarenoteasytonotice.D.It'snotacurablediseasemedically.29.WhatdidtheScottishnursefind?A.Herhusband'sbodygaveoffastrangesmell.B.Herhusbandhadaheightenedsenseofsmell.C.Asmellcausedherhusbandtosufferfromadisease.D.Asmellcouldrelieveherhusband'sParkinson'ssymptoms.六校联考高三期中考试英语试题第6页（共12页）

陕西省2023~2024学年高三第一学期12月模拟测试卷(243439Z)物理试卷答案第一部分

12.如图所示,两相同的轻弹簧竖直固定在水平地面上,A、B两小球从两弹簧正上方不同高度处由静止释放,B球下落的高度大于A球下落的高度,两弹簧的最大压缩量相同,弹簧始终在弹性限度内,不计空气阻力,下列说法正确的是A.A球的质量大于B球的质量B.A球与弹簧接触后向下运动的过程中,加速度先增大后减小C.A球刚接触弹簧时的动能大于B球刚接触弹簧时的动能D.A球每次接触弹簧的时间大于B球每次接触弹簧的时间.

陕西省2023~2024学年高三第一学期12月模拟测试卷(243439Z)物理试卷答案第二部分（待更新）

(3)将电阻箱阻值调到最大,再闭合开关S;多次调节电阻箱,记下表头G的示数I和电阻箱U,U、R,相应的阻值R;根据表头G的示数I求出电池两端的电压U,根据多组U、R,作1U-1R图像,如图丙所示,则求得电源的电动势E=V,内阻r一。(结果均保留到小数点后一位).