2023-2024学年安徽省八年级下学期阶段性练习(一)[各科标题均不同]物理试卷答案试卷答案,炎德英才答案网站目前收集并整理关于2023-2024学年安徽省八年级下学期阶段性练习(一)[各科标题均不同]物理试卷答案试卷答案得系列试题及其答案，更多试题答案请关注我们

2023-2024学年安徽省八年级下学期阶段性练习(一)[各科标题均不同]物理试卷答案试卷答案

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B.Theycouldhaveasmuchsleepaspossibleonweckends.C.Theirliverandmuscleinsulinsensitivitywasreduced.D.Theirabilitytoregulatebloodsugarwasfoundworsened.34.Whatdoestheauthoradviscreaderstodoaccordingtothetext?A.Tosleepextrahoursonweekends.B.Tosnacklessbeforeslcep.C.Totradesomesweetsaspossible.D.Togetenoughslecponweekdays.35.Fromwhichpartofawebsiteisthetextprobablytaken?A.CultureB.Health.C.Sci-tech.D.Fashion.第二节：（共5小题：每小题2.5分，满分12.5分）阅读下面短文，从短文后的选项中选出可以填入空白处的最佳选项

选项中有两项为多余选项

Scienceshowsthatstretching(isessentialafterexercise.Stretchinglengthensandmobilizestheconncctivetissuearoundyourmuscle.What'smore,stretchinghelpsyourbloodflowandevenrelievesyourstress.36Youcouldfeelsick.Youwon'tbesurprisedtoknowthatwhenyouexercisc,youraiseyourheartrateforaperiodoftime.Whileit'sgreattogetthatbloodflowing,it'sjustasimportanttogetyourheartratebacktoanormallevelaftertheworkoutisover.37Asyourheartisbeatingfasterandyourbodytemperatureishigher,youcouldpassoutorfeelsickifyoustoptoofast.Stretchingafterphysicalactivityallowsagradualdecreaseattheendoftheepisode.Yourmuscleswilllikelybecomestifferandmoresore.Whenyouexerciseyourmuscles,itproduceslacticacid()whichisactuallywhatcausesyourmusclestobecomesore.Whenyourestbetweenperiodsofexercise,yourbodynaturallybreaksdownthatlacticacid.Onethingthathelpsyourbodygetridofthatlacticacid?38.Stretchinghelpsyoudistributeoxygenthroughoutyourbody,whichcanreducelacticacidproductionandridyourmusclesofanyaccumulationoflacticacid.39Flexibilityisclosclyrelatedtoinjuryrisk.Poorflexibilitywillcauscyoutohavemusclesthatgettiredquickerandjointsthataremorelikelytosufferfrominjury.Besides,yourweakenedrangeofmotionwillleadtolessbloodandnutrientstoyourjoints.40Stickingtostretchingexerciseafterphysicalactivitycanhopefullyimproveyourflexibility.A.You'llbeatriskofinjury.B.Yougucssedit:Stretching.C.You'llimproveyourflexibilitybystrctching.高一英语试卷共11页第7页

2023-2024学年安徽省八年级下学期阶段性练习(一)[各科标题均不同]物理试卷答案第一部分

(1)电磁打点计时器是一种使用(选填“4一6V交流”、“220V交流”或“直流”)电源的计时仪器,当电源的频率为50Hz时,它每隔s打一次点。(2分)

2023-2024学年安徽省八年级下学期阶段性练习(一)[各科标题均不同]物理试卷答案第二部分（待更新）

13.(10分)m=1kg如图所示,质量m=1kg的足够长的木板静置在粗糙水平面上,距木板右端s=s=m4.5m处有一固定的竖直弹性挡板,另一个质量M=2kg的物块以v=10m/s的速度M=2kgv0=10m/s从左端滑上木板。此后物块在木板上滑动,且一直未到达木板右端。已知木板与水平面间的动摩擦因数0=130物块与木板间的动摩擦因数u=110,木板与弹性挡板相碰时会等速率反弹,重力加速度g=10m/s²,不计空气阻力。求:g=10m/s^2,(1)木板第一次与挡板碰撞时的速度;(2)木板最初两次与挡板碰撞的时间间隔。