[今日更新]河南省2023-2024学年七年级第一学期期末教学质量检测.物理试卷答案

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[今日更新]河南省2023-2024学年七年级第一学期期末教学质量检测.物理试卷答案试卷答案

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palPaulAdorably,thetwotextedeachother:BrodysharedwithRuddthathewashisfavoritesuperheroandintueRuddhesimplyneredAndyourne24.Whatdoestheunderlinedword"harassment"inParagraph2probablymean?A.Complaint.B.Conflict.C.Trouble25.HowdidJoannaCooperhelpBrody?D.Accident.A.Bytellinghisstoryinsmallparentinggroups.B.ByaskingsomepeopletosignhisyearbookC.BysharingBrody'sstorywithherfriendPaulRudd.D.Byfillingthepagesofhisyearbookwithhersignature.26.WhichwordcanbestdescribeRudd'sletter?A.Detailed.B.Formal.C.Cool.27.Whatmightbethebesttitleforthetext?D.EncouragingA.BrodyRidderIsSufferingfromBullyingB.BullyingIsunderControlThankstoRuddC.ActorPaulRuddMakesFriendswithLittleBoysD.AdorableGesturestoBoywithNoYearbookFriendsCAnewstudyfoundthat15-year-oldstoldmorecoherent(storiesaboutturningpointsintheirlivesiftheirmothershadbeentaughtthenewconversationaltechniques14yearsearlier.Theseadolescentsalsoreportedfewersymptomsofdepressionandanxietycomparedtoadolescentsinthestudywhosemothershadtalkedwiththeirtoddlers(初学走路的孩子)asusual.Intheresearch,115mothersoftoddlerswereassignedtoeitheracontrolgroupwithoutanytrainingoranexperimentalgroupgiventraininginelaborativereminiscine(forayear.Thetraininginvolvesopenandresponsiveconversationswithyoungchildrenabouteverydaypastevents.ProjectleadProfessorElaineReesesaysadolescentswhosemothershadparticipatedintheearliercoachingsessionsnarrateddifficulteventsfromtheirlives-suchasparentaldivorceorcyber-bullyingwithmoreinsightintohowtheexperiencehadshapedthem.ProfessorReesesays,"Ourfindingssuggestparents'sharingmemoriesearlyinchildren'slivescanhavelong-lastingbenefits,bothforthewayadolescentsprocessandtalkaboutdifficultlifeeventsandfortheirwell-being.Forexample,ithelpschildrendevelopmorecomplete,specific,andaccuratememoriesoftheirexperiences,providingaricherstoreofmemoriestousewhentellingtheirownstories.Italsoteacheschildrenhowtohaveopendiscussionsaboutpastfeelingswhenthey'renolongerintheheatofthemoment."ProfessorReesehopesparentsandpolicymakersrealizetheimportanceofearlychildhoodastheidealtimeforstartingtohavepositiveconversationswithchildren,andtoknowthattheseconversationscanmakeadifferenceaschildrengrowolder."Theultimategoalistoencourageparentstohavemoresensitiveandresponsiveconversationsabouteventsintheirchildren'slives."Theresearchersintendtocontinuethestudy,followingupwithparticipantsinemergingadulthoodtodetermineanyongoingeffectsoftheirmother'selaborativereminiscine.28.Accordingtothetext,allmothersinvolvedintheresearchA.weretrainedhowtotalkwithkidsforayearB.hadchildrenwhowereaboutoneyearoldC.tookpartinthefollow-upresearchannuallyD.hadexperiencedsomedifficulteventsinlife29.Whatdoestheresearchindicate?A.Coachingsessionswithparentsbenefittoddlers.B.Parentsneedtolearnnewconversationaltechniques.C.Paregcanfightdepression○DOHARPLECA水npathtobetterwell--bcing.·月考卷高三四调·英语第4页（共8页）

8.在如图所示的电路中,用一正弦交点电源给理想变压各供电,夏想变压原、则线圈数之比为4:1,正交流电电压为值R5=g的电阻,一球相交流电压表与电阻R1并联,现想交压得线圈路接有阻值为的电阻,闭合开关S后电压表的示数为44V,,则A.理想交压翻线两靖的电压为55VB.理想变压线圈中的电流为2AC.想变压的输出功率为110WD.电用R2的阻值为:

10.如图所示,平行光滑金属导轨与水平面成37^角,导轨间距为0.8m,装置处在垂直导轨平面向上的匀强磁场中,磁感应强度大小为2.5T,,导轨顶端接有电源E,电源内阻为2Ω。一导体棒垂直导轨放置,恰能以m/s的速度沿导轨向下匀速运动,导体棒质量为0.75kg,接入电路的阻值为2Ω,,其余电阻不计。导体棒与导轨始终接触良好,重力加速度取g=10m/s^2,37^=0.6,37^=0.8,下列说法正确的是A.电源E的电动势为9vB.导体棒a端的电势比b端高1.5VC.导体棒a端的电势比端高6VD.导体棒克服安培力做功的功率为13.5w

15.(18分)如图所示,I和Ⅱ为一带电荷量为+Q的点电荷的电场的等势面,I所在的等势面到点电荷的距离为d,Ⅱ所在的等势面到点电荷的距离为2d。已知离该点电荷的距离为r处的电势=kQr(k为静电力常量,无穷远处电势为零)。求:(1)I、II两个等势面处的电场强度大小之比。(2)I、II两个等势面处电势之比。