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山西省2023-2024学年第二学期八年级文化测评（期末）(物理)试卷答案试卷答案
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C.Streamingcanhelprelieveboredom.D.Itisimportanttocommunicatewithviewers.第二节：（共5小题：每小题2.5分，满分12.5分)根据短文内容，从短文后的选项中选出能填入空白的最佳选项，选项中有两项为多余项
Whatisthebestsleeppositionforyourhealth?It'sdifficulttocontrolwhatsleepingpositionwenaturallyfellinto,asourbodywillsubconsciouslyfallintothemostcomfortablepositionforus.However,somepositionsarebetterforyouthanothersandsomecouldholdbackyourhealthandwellbeing.36IfyousleeponyoursideMorethan60percentofpeoplesleepontheirside.Oftenourbodynaturallymovestothisposition,whichislinkedtowhenwewereinthewombinthefoetalposition.37Itoffersanumberofbenefitstoyourbody,frompromotinghealthyspinealignment(whichcanhelptopreventbackpaintoreducingheartburnandsnoring(打鼾).IfyousleeponyourbackLyingonyourbackisthesecondmostpopularsleepingpositionandoffersjustasmanybenefitsassidesleeping.Whenyou'resleepingonyourback,it'seasytokeepalignmentandtoalsoevenlydistributeyourweight.38IfyousleeponyourstomachSleepingonyourstomachistheleastcommonsleepingposition.39Andthosewhosleepontheirstomachcouldputthemselvesatriskofalessrestfulnight'ssleep.Thestomachofferstheleastamountofbacksupportandcanincreasepressureonthespinewhichmaycausepainonceyouwakeup.40Youshouldconsidervariousfactorssuchasifyousnoreorsuffersleepproblems,orifyouoftenhavebackandneckpain.Sidesleepinghasbeennotedasthebestpositionforthebody,sothisisprobablyonetotryandgetintothehabitoftrying,butagain,italldependsonyou.A.Thisalsohelpstopreventanyneckandbackpain.B.Sleepingonyoursideisprobablythebestposition.C.Sidesleepingwouldbeparticularlybeneficialforolderpeople.D.Therearemorenegativestothispositioncomparedtopositives.E.DeterminingthesleepingpositionforyouispersonalpreferenceF.Here,thisarticlerevealsexactlyhowyoursleeppositionisaffectingyourhealth.G.Thisismostlylikelybecauseitisoneofthemostcomfortablesleepingpositions.第三部分：语言知识运用（共两节，满分30分)第一节：（共15题：每小题1分，满分15分）阅读下面短文，从短文后各题所给的A、B、C、和D中，选出可以填入空白处的最佳选项
MynameisAllyDelMonte.Irememberitclearly.WhenIwas10yearsold,my41andIwereonourfirstvacationatDisneyWorld,andweweregoingtoa"PirateandPrincessParty",Wedidn'tknowthatitwasacostume(partybutno42-mymomsaidshe'd43metogetaprincessdress.We44thelandofprincesses,buttheydidn'thaveoneforme.IwasinthebeginningstageofLymedisease.My45andmedicationcausedmyoverweight.Iwastoo46forthekidscostumesandthe47costumeswouldn'tworkforme.
9.如图8所示,M、N两点分别固定等量的同种点电荷,长方形ABCD为垂直MN连线的平面,长方形中心O是MN连线的中点,E、F分别是BC、AD的中点,下列说法正确的是A.A、C两点的电场强度相同B.B电场强度大于E点的电场强度C.把一个电子由静止从B点释放则电子沿B、D两点连线运动到D点D.若仅将M、N处的点电荷稍微靠近,F点的场强一定变大
8.如图所示,一列简谐横波沿x轴传播,实线为t=0时刻的波形,虚线为t=0.9s时的波形,P为平衡位置在x=4m处的质点,Q为平衡位置在x=5m处的质点,质点振动的周期T满足0.9s<T<1.8s,,则下列说法正确的是A.t=0时刻,质点P正在向y轴正方向运动B.这列波传播的速度大小为为203m/sC.质点P比质点Q振动滞后0.4sD.t=0.225s时刻,质点P和Q的位移相同
10.体育课上,晓宇同学把一个篮球竖直向上抛出,t1时刻到达最高点,然后又落回原处,若空气阻力大小恒定,则下列图像中能正确反映这一过程的是(取竖直向上为正方向)
