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陕西省2023-2024学年度七年级第二学期期末质量检测(2024.7)(物理)试卷答案试卷答案
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第二部分阅读（共两节，满分50分）】22.WhyisthestudybytheNationalInstituteonAgingmentioned?第一节（共15小题：每小题2.5分，满分37.5分）A.Tosaywhyhearingaidsareexpensive.阅读下列短文，从每题所给的A,B、C、D四个选项中选出最佳选项
B.ToexplaintheprincipleofhearingaidsAC.ToprovetheadvantagesoftheMDHearingAid.Advancedhearingaidtechnologyforlessthan200D.Toshowtheimportanceofwearinghearingaids"TheMDHearingAidistheBESThearingaidIhaveusedatANYprice!"23.WhatelsedoweknowabouttheMDHearingAid?-EdwardS.Wayne,NJA.ItisproducedinChina.Howcanahearingaidthatcostslessthan200beeverybitasgoodasonethatsellsforB.Itisavailableindrugstores.$2,250ormore?C.Itneedstobechargeddaily.Theanswer:Althoughgreatprogresshasbeenmadeinadvancedhearingaidtechnology,D.Itcanbetriedfreefor45days.thosecostreductionshavenotbeenpassedontoyou.Untilnow.TheMDHearingAidusesthesamekindofadvancedhearingaidtechnologyincorporatedintohearingaidsthatcostMost5-year-oldsarejustlearningtheirABCsbutonelittlegirlfromtheUKhasactually我thousandsmoreatafraction(oftheprice.Over300,000satisfiedMDHearingAidwrittenabookthatwaspublishedinJanuary2022.Bella-JayDarkfromWeymouth,isthecustomersagree:High-quality,FDA-registeredhearingaidsdon'thavetocostafortune.Theworld'syoungestfemaletobepublishedandwasawardedthetitlebyGuinnessWorldRe-些factisthatyoudon'tneedtospendthousandsforahearingaid.TheMDHearingAidisacords.Herbook,TheLostCattellsthestoryofSnowy,acatwhogotlostaftergoingoutsidemedical-gradehearingaidofferinghighperformance,andworksrightoutoftheboxwithnoaloneatnight.Shehopesthebookwillteachchildrennottogooutsideatnightalone.time-consuming"adjustment"appointments.YoucancontactalicensedhearingspecialistWhilemanyadultwritersfindinspirationfortheirbooksfromlifeexperiences,Bella'sconvenientlyonlineorbyphone-evenafteryourpurchaseatnocost.Noothercompanycreativevisionactuallycamefromoneofherdrawings."Itstartedoffasapicture.Mydaddyprovidessuchextensivesupport.Nowthatyouknow,whypaymore?saidIcouldmakeabookandastorycamefromthepicture,Bellasaid.CanahearingaiddelayorpreventAlzheimer'sanddementia?AstudybytheNationalHermom,ChelsieSyme,wassurprisedthatthebookturnedoutaswellasitdid."IamInstituteonAgingsuggestsolderindividualswithhearinglossaresignificantlymorelikelytojustreallyproudofher;Ididnotthinkitwasgoingtogothisfar,soI'mjustproudandwantdevelopAlzheimer'sanddementiaovertimethanthosewhokeeptheirhearing.Theysuggesttoseehergettheacknowledgementshedeserves.阔thatanintervention-suchasahearingaid-coulddelayorpreventthisbyimprovinghearing!Buthowdoyougetachild'shomemadebookpublished?AccordingtoSyme,theytookTAKEADVANTAGEOFOUR45-DAYRISK-FREETRIAL!Bella'sbooktoabookfairandfoundapublisherwillingtotakeachanceonit.SymehelpedHearingisbelievingandweinviteyoutotrythisnearlyinvisiblehearingaidwithnoBellawithproofingcopiesandmakingnecessarychanges.ToearntheGuinnessWorldRecordannoyingwhistlingorbackgroundnoiseforyourself.IfyouarenotcompletelysatisfiedwithtitleofTheWorld'sYoungestPublishedAuthor,female,thebookhastobepublishedbya密yourMDHearingAid,returnitwithin45daysforaFULLREFUND.commercialpublishinghouseandhaveatleast1,000copiesprintedandsold.Bella'sbookmetForthelowestprice,call1-800-817-1738thecriteria,soshewasawardedthetitle.www.GetMDHearingAid200.comBesidesbeinganaccomplishedauthor,Bellaisjustaregularkidwhoenjoysreading,BATTERIESINCLUDEDswimming,andplayingonhertablet.Inherfreetime,sheiscurrentlyworkingonasequelReadytouserightoutofthebox!(toSnowy'sstory.Whoknowswhatpearlsofwisdomwillcomenext?UseCodeHR73andgetFREEBatteriesfor1Year24.WhoisSnowy?PlusFREEshippingA.Bella'spetB.Alostchild.MadeinAmericaC.AcatinBella'swork.D.Atalentedfemalewriter.21.Comparedwithotheradvancedhearingaids,theMDHearingAid25.WhatgivesBellaabrainwavetogeneratetheideaofherbook?A.ismuchcheaperB.isalittlelighterA.Herlifeexperiences.B.Apictureshepainted.C.showsbetterperformanceD.usesmoreadvancedtechnologyC.HerinterestinanimalsD.Astoryfromabook.【(九校)联考半期考高三英语试卷第3页（共10页）】·23-89C·【(九校)联考半期考高三英语试卷第4页（共10页）】·23-89C·
(3)取一电动势为3.0V、内阻较小的电源和调节范围足够大的滑动变阻器,与改装所得2.0mA的电流表连接成如图甲所示欧姆表,其中B为(填“红”或“黑”)表笔,该欧姆表的内阻为15702,改装表盘后,正确使用该欧姆表测量某电阻的阻值,示数如图乙所示,图乙所测电阻为300&2×103
13.A、B两物体从甲地运动到乙地。A物体前半段时间内的平均速度为v1,后半段时间内的平均速度为v2;B物体前半段路程内的平均速度为v3,后半段路程内的平均速度为v4。,则两物体全程的平均速度()A.vA=v1+v22B.vA=2v1v2v1+v2C.vB=2v3v4v3+v4D.vB=v3+v42
②B组方案主要步骤如下:a.闭合开关S1,,单刀双掷开关S2扳到“1”位置,调节电阻箱R1,,使电流表为某一适当的读数1,测量并记下空笔芯里盐水的长度L1和电阻箱的读数R;b.开关S2始终扳到“时,记录每一次盐水柱长度L和电阻箱c.该小组根据测得的空笔芯内径d和该图像中标注的有关字母,可得盐水的电阻率表达式为.1'”位置,改变笔芯管内盐水柱长度,调节R1使得电流表读数为R1阻值,画出的R-L图线如图乙另一条直线;
