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如图是探究物体动能的大小与哪些因素有关”的实验示意图（mA＜mC） （1）实验要探究的是物体动能的大小与物体 和质量的关系． （2）实验中物体动能的大小是通过 （填“s”或“h”）的大小...
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如图是探究物体动能的大小与什么因素有关的实验示意图.①多次让物体从斜面不同高度由静止滚下该实验要探究
下图是我们探究物体动能大小与哪些因素有关的实验装置1该实验是通过用控制变量的研究方法研究▲选填小车或
如图是探究物体动能的大小与哪些因素有关的实验示意图1实验要探究的是物体动能的大小与物体和质量的关系2
下图是我们探究物体动能大小与哪些因素有关的实验装置1该实验是通过用控制变量的研究方法研究选填小车或木
如图是探究物体动能的大小与哪些因素有关的实验示意图.1实验中探究的是填A.或B.物体的动能物体动能的
如图12是探究物体动能的大小与什么因素有关的实验示意图.该实验物体的动能是指物体_选填A.或B.的动
如图12是探究物体动能的大小与什么因素有关的实验示意图.该实验物体的动能是指物体_选填A.或B.的动
在探究物体动能的大小与哪些因素有关的实验中使用同一小球进行如图所示的两次实验则下列说法中正确的是
小球从斜面上滚下来的过程中动能一直减小
两次实验研究物体的动能大小与质量的关系
两次实验研究物体的动能大小与高度的关系
两次实验研究物体的动能大小与速度的关系
如图是探究物体动能大小与哪些因素有关的实验示意图A为小球B为木块．在探究小球动能大小与速度的关系时
图17是探究物体动能的大小与哪些因素有关的实验示意图1实验要探究的是物体动能的大小与物体和质量的关系
在探究物体动能的大小与哪些因素有关的实验中使用同一小球进行如图所示的两次实验则下列说法中正确的是
小球从斜面上滚下来的过程中动能一直减小
两次实验研究物体的动能大小与质量的关系
两次实验研究物体的动能大小与高度的关系
两次实验研究物体的动能大小与速度的关系
如图是探究物体的动能的大小与什么因素有关的实验示意图⑴该实验要探究的是物体动能的大小与物体_____
在探究物体动能的大小与哪些因素有关的实验中使用同一小球进行如图所示的两次实验则下列说法中正确的是
小球从斜面上滚下来的过程中动能一直减小
两次实验研究物体的动能大小与质量的关系
两次实验研究物体的动能大小与高度的关系
两次实验研究物体的动能大小与速度的关系
如图所示是探究动能大小与哪些因素有关的实验装置示意图1该实验的研究对象是它的动能大小是用来反映的2在
如图16甲是研究物体动能大小与哪些因素有关的实验装置实验中木块被推动的越表明钢球动能越大这个实验是为
如图是探究物体动能的大小与哪些因素有关的实验示意图1实验要探究的是物体动能的大小与物体_______
2.00分如图所示是探究物体动能的大小与什么因素有关的实验装置示意图．该实验装置要探究的是物体动能
如图是探究物体动能的大小与什么因素有关的实验示意图A.球的质量和高度都可改变问①该实验要探究的是物体
如图是探究物体动能的大小与哪些因素有关的实验装置实验中让同一钢球从斜面上不同的高度由静止滚下碰到同一
如图所示是探究物体动能的大小与哪些因素有关的实验示意图．实验中物体A的动能大小是通过填s或h的大小
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﹣Toachieveabrightfutureweshouldstudyhardkeephealthy ﹣Iagreewithyou. A.notonlybutalso B.notbut C.neithernor D.eitheror
DearRichard I'mgladyou'recomingtoChina!①Yourmothertellsmeyou'reworriedaboutwhatyoushouldandshouldn'tdoasaguestinChina.HereissomeadviceoneatingcustomsinChina. You'llprobablybeinvitedtoadinner.Therewillbealotofdishesnotjustthreecourses.Youmayfinditdifficulttousechopsticksifyouhaven'ttriedbefore.It'sagoodideatogetsomepracticebeforehand.Whenthefoodisservedyoushouldwaituntilyou'reinvitedtoeat.Theplateswillbeplacedinthemiddleofthetableforeverybodytoshare.Takealittleofeverythingandthenhavesomemoreofthethingsyoulike. Toprepareabigmealtakesalongtimeandeverythinglooksbeautifulsoit'sagoodtopicofconversation.You'dbetterjoinintheconversationandsayhowmuchyoulikeit. Attheendofthemealyouwillusuallybeservedwithfruit. Ihopethisishelpful.Emailmeifyouhaveanyotherquestions. Yours ZhangDawei 任务一:PuttheunderlinedsentencesintoChinese.将画线的句子译成汉语 72.① 73. 74.HowmanycoursesareusualforadinnerintheWest?. 75.IsitagoodideatotalkaboutfoodduringamealinChina?Why? 76..
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阅读下面的短文用括号内所给词的适当形式填空必要时可加助动词.请将答案填写在文后相应的横线上. Onceuponatimetherewasatravelerwhohadaabighorseandasmalldonkey.Whilehewastravelingthehorseandthedonkeycarriedallkindsofthingson56theybacksforhim.Thebighorsewasverystrongbuthecarriedas57heavyasthesmalldonkey. At58onethedonkeywasabletokeepupwiththebighorse.Butaftersometimehedonkeybegantofeeltootired59keepupanymore.SothedonkeyaskedthehorseBrotherHorsecouldyoupleasehelpme?IamafraidIcan'tgoon60carrymyload负荷物. Noyoucarryyours.Icarry61my.Itisnotmyproblemthatyouarenotasstrongandbigasmeansweredthehorse62feelveryproudthathewas63strong. Notlongafterthatthedonkeyatlast64falldowntothegroundanddied. Their65ownmovedwhatthedonkeycarriedontothebackofthehorse.Nowthehorsehadtocarrythedoubleloadfortherestofthejourneyandheregretted后悔whathedidtothedonkey.IfIhadhelpedthedonkeyoutat66littlehecouldcarrysomething.thehorsesaidto67he.Butitwastoolate. 56. 57. 58. 59. 60. 61. 62. 63. 64. 65. 66. 67.
有下列物质①冰水混合物②氧气③过氧化氢溶液完全分解后所得液体④洁净的空气⑤五氧化二磷⑥高锰酸钾分解的固体剩余物．用序号填空 1属于混合物的有2含有氧分子的有．
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Librariesgivekidsaquietandsafeplacetoreadandlearn.Forover100yearslibrarieshaveplayedanimportantroleinAmericans'education.Buthowarethesebook﹣filledbuildingschangingwiththetimes?Youmaybesurprisedtofindout. BenjaminFranklinfamouslyfounded创建America'sfirstlendinglibraryin1731.ButthepubliclibrarysystemgotitsbiggestdevelopmentintheAmericanhistoryinthelate1800's.BusinessmanAndrewCarnegiedonatedmillionsofdollarstohelpbuildfreepubliclibrariesacrossthecountry.Between1886and1919Carnegie'sdonationshelpedbuild1679newlibraries. CarnegiebelievedthatlibrariescouldofferthechancestoAmericansyoungandold.Heknewthatthemorelibrariestherewerethemorepeoplewouldhaveopportunitiestoreadandusebooksspeechesandnews. Ifyoucaneasilyfindapubliclibraryinyourcommunity社区you'llgetmorechances.AfteralltheUnitedStateshas9225publiclibraries.Todaylibrarieskeepgrowing.SevententhsofthelibrarieshavefreeInternet.Itprovidesmuchmoreinformationandopportunitiestoaskforjobsonline. Librariesarealsoteachingkidsaboutthefunofreading.ThenewprogramRead!Build!Play!addsreadingintoplaytime.AskidslistentoabookthatisbeingreadaloudtheyuseLegos乐高积木tobuildimages图象fromthestoryhappily.Today'slibrariesarealwayslookingforcreativeprogramstobringpeopleintothelibrary. BenjaminFranklinoncesaidThedoorsofwisdom智慧arenevershut.Aslongasthedoorsofpubliclibrariesareopenwhathesaidismostcertainlycorrect! 48.HowmanypubliclibrarieshavefreeInternetnow? A.2767. B.6458. C.9225. D.1679. 49.Therightorderofthefollowingstatementsis. ①ThepubliclibrarysysteminAmericadevelopedfast. ②Thefirstlendinglibrarywasfounded. ③Librariesprovideinformationandchancestoaskforjobonline. ④Librariestrytobringpeopleintothelibrarybyusingcreativeprograms. A.②①③④ B.②③④① C.③④①② D.①②③④ 50.Thelastparagraphmainlytellsus. A.librarieshaveplayedanimportantroleinAmericans'education B.publiclibrariesintheUSshouldneverclosethedoors C.thewriterdoesn'tagreewithBenjaminFranklin D.librarieshelppeopletoopenthedoorsofwisdom 51.Thebesttitleforthepassageis. A.thelibrariesintheworld B.librariesandopportunities C.librariesteachkidstoreadandlearn D.thedevelopmentoftheAmericanlibraries.
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