[今日更新]河北省2024年九年级模拟检测（2024.5）.物理试卷答案

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BWespendaroundonethirdofourlivesinbed,andthebodydoesalotofitsrepairworkaswesleep,soenoughgoodqualitysleepisveryimportanttoourhealth.Itdoesn'tstopthere,though-somesleeppositionsarehealthierthanothers.Sowhichsleeppositionisthehealthiest?Sleepingonyourbackisthehealthiestsleepposition,Healthbenefitsincludeavoidingbackandneckpain.Becausetheheadisraisedabovethestomachwhenyousleeponyourback,thispositionisbestforpeoplewhosufferfromnighttimeacidreflux(aswell.Around80%ofheartburnsufferershaveproblemsduringthenight,sosleepingontheirbackcouldhelpalotofpeopletoenjoyagoodnight'ssleep.Ifthesleeppositionaloneisnotenoughtoalleviatethecondition,tryraisingtheheadofthebedbyupto4inchesbyplacingblocksunderit.Whenyousleeponyourback,yourfaceisinanaturalposition.Thismeanslesswrinkles()Ifyoureallycan'tfacesleepingonyourback,anotherhealthysleeppositionisthesidesleep.It'salmostasgoodasthebackposition,andit'sbetterforpeoplewhosnoreandtheirpartners.Whicheversleeppositionyouchoose,useapillowthatsupportstheheadandtheneckwithoutraisingtheheadunnaturally,asthiscanbringneckpain.24.WhichisNOToneofthebenefitsofsleepingontheback?A.Itcanavoidacidreflux.B.Itmakespeoplelookyounger.C.It'sgoodforheartburnsufferers.D.Ithelpspeoplegetridofstomachpain.25.Whichisthebestsleeppositionforpeoplewhosnore?A.Sleepontheface.B.Sleepontheside.C.Sleepontheback.D.Sleepwithoutpillows.26.Theunderlinedword"alleviate"inParagraph2probablymeansA.makeitlessseriousB.makepeopleforgetC.makeitlessusefulD.makepeopleenjoy27.Whatdoesthetextmainlytalkabout?A.Waystokeepushealthy.B.Theimportanceofsleep.C.Sleep'srepairingfunctions.D.Healthypositionsofsleep.CWilliamButlerYeats,amostfamousIrishwriter,wasborninDublinonJune13,1865.Hischildhoodlackedtheharmony(thatwastypicalofahappyfamily.Later,Yeatsshockedhisfamilybysayingthatheremembered"littleofchildhoodbutitspain".Infact,heinherited(excellenttasteinartfromhisfamily-bothhisfatherandhisbrotherwerepainters.Buthefinallysettledonliterature,particularlydrama(戏剧)andpoetry.Yeatshadstrongfaithincomingofnewartisticmovements.HesethimselfthefreshtaskinfoundinganIrishnationaltheatreinthelate1890s.Hisearlytheatricalexperiments,however,werenotreceivedfavourablyatthebeginning.Hedidn'tloseheart,andfinallyenjoyedsuccessinhispoeticaldrama.Comparedwithhisdramaticworks,Yeats'spoemsattractmuchadmiringnotice.Thesubjectmatterincludeslove,nature,history,timeandaging.ThoughYeatsgenerallyreliedonverytraditionalforms,hebroughtmodernsensibilitytothem.Ashisliterarylifeprogressed,hispoetrygrewfinerandricher,whichledhimtoworldwiderecognition.HehadnotenjoyedamajorpubliclifesincewinningtheNobelPricein1923.Yet,hecontinued高二英语学科试题第4页（共9页）

5.如图所示,汽车在水平路面上发生故障失去动力,两人沿水平方向推着汽车缓慢移动,每个人对汽车作用力的大小都为200N,方向都沿水平方向,并和汽车的运动方向成30^角,则汽车在移动过程中受到的阻力大小为A.1003NB.200NC.2003ND.400

15.(18分)全国100所名校高考模拟示范卷=37^,向间的夹=31,第二象限内有一点A态直角坐标系x0y中,y轴竖直,虚线MN通过O点且与x轴负方x向里的匀A(-85L,-65L)。。第一象限内有垂直纸面轴向里的匀磁场和方向平行纸面的匀强电场(图中未画出);x<0的区域内有沿x二轴负方向的匀强电场,且第二象限内的电场强度与第三象限内的不同。现有一质m1q量为m,电荷量为q的带正电小球从A点以大小v0=263gL(gg为重力加速度大小)的初速度沿AO做直线运动,小球通过O点后在第一象限做匀速圆周运动,接着通过y轴上的y的PP(0,32L)点后进入第二象限,第二象限内的电场强度大小E2=3mg4q,37^=0.6,37^=0.8。求:(1)第三象限内电场强度的大小E。E3。(2)小球到达0点时的速度大小v。(3)第一象限内磁感应强度大小B和电场强度大小E1以及小球从通过P点开始到第二次通过MN所用的时间t(在到达P点前通过O点为第一次通过MN)。

2.4、B两小车在同一直线上运动,它们运动的位移s随时间t变化的关系如右图所示,已知4车的st图像为抛物线的一部分,第7s末图像处于最高点,B车的图像为直线。下列说法正确的是()。A.4车的初速度为7m/sB.A车的加速度大小为22m/s^2C.A车减速过程运动的位移大小为50mD.10末两车相遇时,B车的速度较大