陕西省西咸新区2023-2024学年度八年级第二学期期末质量监测(物理)试卷答案试卷答案,我们目前收集并整理关于陕西省西咸新区2023-2024学年度八年级第二学期期末质量监测(物理)试卷答案得系列试题及其答案，更多试题答案请捕获只因吧
陕西省西咸新区2023-2024学年度八年级第二学期期末质量监测(物理)试卷答案试卷答案
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So,ifyou'reconvincedthatthisisforyou,takeadvice:approachitwithcaution,swimwithafriend,andmaybestartinthesummer,whenthewatertemperaturesarehigher.A.Cold-waterswimmingcansubstituteformedicine.B.However,manyparticipantssaytheygetusedtoit.C.Ifyoudon'tmindgettingwet,itcanbefuntoo.D.It'salsothoughttostrengthenourdigestivefunction.E.Weallknowexercisecanextendpeople'slifespan.F.Forexample,ithelpsreducethestressofexercisingathighaltitudes.G.Cold-waterswimmingcanfunctionasadoseofmedicine.【语篇导读】本文是一篇说明文
文章主要介绍了冷水游泳的诸多好处，比如强身健体、提升幸福感、缓解压力、锻炼意志力等
5.C根据上下文可知，设空处应是承上启下的句子，继续补充说明游泳带来的好处，尤其是精神层面的
结合选项可知，C项切题
6B根据上下文可推知，设空处与上文构成转折，表明冷水游泳虽冷，但许多参与者都已经习惯了冷水游泳，承接下文讲冷水游泳的好处，结合选项可知，B项切题
7G设空处位于本段段首，应为本段的主题句
根据下文可知，本段主要说明冷水游泳可以治愈某些健康问题
故G项能够概括本段的主要内容，切题
8.D根据设空处上文Doctorssaygettingintocoldwatermakesastressresponse,butthemoreyoudoit,yourreactiontostressisreduced..以及下文Inaddition,cold-waterswimmingcanexerciseswimmers'willpower.可知，设空处应是继续介绍冷水游泳的其他好处，D项切题
9.F根据上文Someexpertsbelievecold--waterswimminghelps“cross-adaptation'”,whereoneformofstresspreparesthebodyforanother.可知，这个表述显然有些抽象，F项正好对此进行举例说明，切题
三、完形填空（共20小题；每小题2分，满分40分）阅读下面短文，从短文后各题所给的A、B、C和D四个选项中，选出可以填入空白处的最佳选项
Youarewhatyoueat,somaybeit'stimethatyoustartedeatingwisely.ExpertsatthefirstChineseStudentsNutritionandHealthFestivalinKunmingdidasurveylastweek10youngpeople'sbadeatinghabit:watchingtelevision11havingmealsorsnacks.Doingthismeansyoudon'tpay12toyourfood,forgethowfullyouare,andsoovereat.Itcanalso13digestiondiseases.Onewayto14thisisonlytoeatincertainareasofyourhome.Itisnotgoodtohavesnacksinsteadof15.Manystudentsthinkthateatingsmallsnackscanhelp16.Butitoftenresultsinovereatingandhealthproblemsrelated17ashortageofvegetables,carbohydrates(a碳水化合物)andvitamins.Snackingonlyworks18itiswellplannedandifit19healthyfoodssuchasnuts,vegetables.20ratherthanwaterisverybad,too.Gaswhichcancause21problems.Waterisimportantinmakingyourbraincellsandevery22inyourbodyworkproperly.Foryourbodyto23fat,itneedsatleasteightglassesof24wateraday.Liquidslikesodaandcoffeeactuallywill25waterfromyourbody.Refusingtodrinkmilkisanotherunhealthyhabit.Milkisthebestnaturalfood-it26youwithprotein,whichmakesyourbonesstrongandteethhealthy.Choosingmeatandcertainvegetablesoverothers.Differentfoodsprovidedifferentkindsof27.Ifyoudon'thaveabalanceddiet,thiscanresultinaweakerbody.Childrenlovebright-coloredfoods.Somefoodmanufacturers(制造厂，生产商)addextrapigments(色素)to28kids,Buttheseareinfact29.Eatingthroatpillsasiftheyweresweetsisanunhealthyeatinghabit,too.10.A.findingoutB.foundoutC.findingD.found11.A.butB.whileC.orD.and12.A.moneyB.billsC.attentionD.back13.A.causeB.affectC.produceD.make14.A.keepB.causeC.avoidD.get15.A.vegetablesB.mealsC.foodD.fruit16.A.readB.thinkC.studyD.diet·42·
9.如图所示,带有等度荷的两块等大的平行金属板M、N水平正对放置,两板间电场强M板为10^4VVm虽1cm.m,方向下M板和N板相距10cm,电场中A点距N板为4cm,B点距BCA.B点电m.下列说注正确的是B.让N板接地,则,AB势,AB间的电势差UAB=400VUAB=400VA=400VC.一个电子从A4点的电势ya≈400VAA点移动到B点,电势能减少5×10²eV510^2eVD.将
16.(8分)如图所示,长L=0.2m的轻绳一端与质量m=2kg的小球相连,另一端连接一个质量M=1kg的滑块,滑块套在竖直杆上,与竖直杆间的动摩擦因数为。现在让小球绕竖直杆在水平面内做匀速圆周运动,当绳子与杆的夹角=60^时,滑块恰好不下滑。假设最大静摩擦力等于滑动摩擦力、取g=10m/s^2。求:(1)小球转动的角速度的大小;(2)滑块与竖直杆间的动摩擦因数。
8.如图所示,电路中电源两端电压U保持不变。当开关S1闭合、S2断开,滑动变阻器接入电路中的电阻为RA时,电压表的示数为U1,,电流表的示数为I1,,电阻R1的电功率为P1,,电阻RA的电功率为PA;当开关S1、S2都闭合,滑动变阻器接入电路中的电阻为RB时,电压表的示数U2为2V,电流表的示数为I2,电阻RB的电功率为PB;当开关S1闭合、、S2断开,滑动变阻器滑片P位于最右端时,电阻R2的电功率为8VV.已知R1:R2=2:1,P1:PB=1:10,U1:U2=3:2。。则A.电流I1:I2=2:1B.电源两端的电压为12VC.电阻R2的阻值为2ΩD.电阻RA的电功率PA班级姓名分数
