山西省七年级2023-2024学年度第二学期期中学情调研(A)物理试卷答案试卷答案,炎德英才答案网站目前收集并整理关于山西省七年级2023-2024学年度第二学期期中学情调研(A)物理试卷答案试卷答案得系列试题及其答案，更多试题答案请关注我们

山西省七年级2023-2024学年度第二学期期中学情调研(A)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）

山西省七年级2023-2024学年度第二学期期中学情调研(A)物理试卷答案第一部分

(1)按照电路图连接好电路。将可变电阻阻值调到最大,闭合开关;然后多次调节可变电阻阻值,记下电压表的示数U和可变电阻相应的阻值R;为纵坐标,R为横坐标,利用所测数据描点作图,得到一条直线;测得直线的斜率为k,,在纵轴上的截距为b0已知电压表的内阻RV,和定值电阻的阻值R0,,则电源的电动势为,内阻为。(用k、b、RY,和R0中的物理量表示)

山西省七年级2023-2024学年度第二学期期中学情调研(A)物理试卷答案第二部分（待更新）

(1))保持加入细沙的(1)保持加入细沙的质量m一定,逐渐增加悬挂钩码的数目,在长木板滑动的过程n挂钩1,在4长中,拉力传感器的示数(选填“变大”“变小”或“已知