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踢足球时,同学踢到球时感觉脚部有疼痛感,是因为物体间力的作用是 的,足球在地面上由静止变成向前运动并进入球门,说明力能改变物体的
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放学后同学们在球场上踢足球.小明用力把球踢了出去感到脚上有点疼这是因为_______________
如图是运动员踢足球的情景下列分析正确的是
踢足球时,球对脚没有作用力
足球在空中时受到脚的作用力
足球在空中继续运动是由于惯性
脚对足球的力和足球的重力是一对平衡力
踢足球时脚对足球施加力的同时脚也感到痛这一现象说明物体间力的作用是.
小强同学在踢足球时用力踢向足球足球受力后腾空而起球离开脚后能在空中继续飞行是由于足球具有同时他也感到
乒乓球被扣杀飞向对方,是因为受到了惯性的作用
篮球从空中落下,是因为篮球受重力的作用
用脚踢足球时,脚有疼痛感,说明力的作用是相互的
将排球竖直向上抛出,到最高点时速度为零,此时排球处于非平衡状态
如图5所示是足球运动员争抢头球时的情景用力顶球球向外飞出这说明力可以改变物体的4同时运动员的头部有疼
下列说法正确的是
足球在水平地面上滚动时会慢慢停下来,是由于没有受到力的作用
人站在水平地面上,人对地面的压力与人的重力是相同的
赛车在高速行驶时不容易停下来,是因为速度越大惯性越大
用脚踢足球时,脚有疼痛感,这说明力的作用是相互的
运动员踢足球时人对球施加的力它的受力物体是施力物体是脚会有疼痛的感觉它表明脚也同时受到了力的作用这是
对下列体育运动中的现象分析正确的是
乒乓球被扣杀飞向对方,是因为受到了惯性的作用
篮球从空中落下,是因为篮球不受力的作用
用脚踢足球时,脚有疼痛感,说明力的作用是相互的
将排球竖直向上抛出,到最高点时速度为零,此时排球处于平衡状态
踢足球时脚对足球施加力的作用同时脚也感到痛这一现象说明物体之间力作用是的使脚感到痛的力的施力物体是
足球比赛中运动员踢球时脚也会感到痛这是因为物体间力的作用是踢出去的足球不会立即停下来是因为足球具有
踢足球时脚对足球施力的同时脚会感到痛这说明物体间力的作用是的.球离开脚后能继续向前运动一段距离是因为
10·乌鲁木齐2010年6月世界杯足球赛首次在南非举行它既是足球运动的盛会也是世界人民友好交流的盛会
对下列体育运动中的现象分析正确的是
乒乓球被扣杀飞向对方,是因为受到了惯性的作用
篮球从空中落下,此过程中它的动能转化为重力势能
用脚踢足球时,脚有疼痛感,说明力的作用是相互的
间排球竖直向上抛出,到最高点时速度为零,此时排球处于平衡状态
如图是运动员踢足球的情景下列分析正确的是
踢足球时,球对脚没有作用力
足球在空中时受到脚的作用力
足球在空中继续运动是由于惯性
脚对足球的力和足球的重力是一对平衡力
用力踢足球脚会感到疼是因为物体间力的作用是的足球离开脚后继续在草地上滚动是因为足球具有
光着脚踢足球脚会感到疼这是因为物体间力的作用是.
如图是运动员踢足球的情景下列分析正确的是:
踢足球时,球对脚没有作用力;
足球在空中时受到脚的作用力;
足球在空中继续运动是由于惯性;
脚对足球的力和足球的重力是一对平衡力.
去年我市举行了校园足球联赛下列说法正确的是
用力踢球时脚感到疼痛,说明力的作用是相互的
足球被踢出后仍能继续运动,是因为脚对球正在做功
不踢球时球会慢慢停下来,说明力是维持物体运动的原因
脚对球的作用力与球的重力是一对平衡力
2010年6月世界杯足球赛首次在南非举行它既是足球运动的盛会也是世界人民友好交流的盛会.比赛中运动
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10分Asachildgrowsupyoumaywonderhowyoucanteachhimtobecomearespectfuladult.1Achildwholearnstorespectnotonlylearnstoreceiverespectfromothersinkindbutalsolearnstorespecthimself. ●Showhimrespect. Thisisthebestwaytoteachyourchildhowtorespectothers.Listentoyourchildattentivelyandhewilllearntolistentoyouunderstandinghowimportantthisisincommunication. ●2 Themoreyousaypleaseandthankyoutoyourchildthemorelikelyhewilllearntousethem.Politenessthenbecomesanormalpartofanyconversation. ●Agreetodisagree. 3Explainyourdecisionsothathewillunderstandyouandexpectrespectfulresponses.Disagreeingwithyoudoesn'tnecessarilymeandisobedience不顺从. ●Controlyourimpulsetooverreact. Whenasituationarisesstaycalmandkeepinmindthatyouaresupposedtobemodelingcorrectbehavior.4 ●Praisepraisepraise Somuchisfocusedonwhatachilddoeswrongandhowtocorrectitthathisaccomplishmentsarenotcelebratedenough.5 A.Teachmannersbyusingpoliterequestsandresponses. B.Trytorememberthatachildwon'talwaysagreewithyou. C.Respectisnecessaryforameaningfulandsuccessfullife. D.Ifheseesyouloseyourtemperheismorelikelytorespondthatwayinfuture. E.Achildmayactashepleasesandhewillliveahappylife. F.Seeingachildexhibitrespectfulbehaviormakesureheknowshowproudyouareofhim. G.Respectfulbehaviorisalwaysaccompaniedbybadbehaviorasachild. 1. 2. 3. 4. 5.
10分Trainingforamarathonrequirescarefulpreparationandsteadygradualincreasesinthelengthoftheruns.36buythebest﹣fittingbest﹣builtrunningshoesyoucanfind.Noonecansaywhichbrandwillworkbestforyouorfeelbestonyourfeetsoyouhavetorelyonyourexperienceandonthefeelofeachpairasyoushop.Whenyouhavefoundshoesthatseemrightwalkinthemforafewdaystodouble﹣checkthefit.37.Asalwaysyoushouldstretch伸展atleasttenminutesbeforeeachruntopreventinjuries. Duringthefirstweekdonotthinkaboutdistancebutrunfiveminuteslongereachday.38itiswisetotakeadayofftorest.Butduringthenextweeksetagoalofatleastamileandahalfperrun.39.Aftertwoweeksstarttimingyourself.40.Dependingonthekindofraceyouplantoenteryoucansetupatimetablefortheremainingweeksbeforetherace. A.Aftersixdays B.Foragoodmarathonrunner C.Beforeyoubeginyourtraining D.Witheachdayincreasethedistancebyahalfmile E.Iftheystillfeelgoodyoucanbeginrunninginthem F.Timespentforpreparationraisesthequalityoftraining G.Nowyouarereadytofigureoutagoalofimprovingdistanceandtime. 1. 2. 3. 4. 5.
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如图在边长为1的正方形网格中有一格点△ABC已知ABC三点的坐标分别是A10B2-1C31 1请在网格图形中画出平面直角坐标系 2以原点O为位似中心将△ABC放大2倍画出放大后的△A'B'C'
15分Iamastudentandpart﹣timewaitressinChicago.1growupIwasusedtowordssuchasDon'ttalktostrangers.As2resultIdon'ttalktounknownpeopleatworkexcepttakingorders. Onenightalittleoldmanprobablyinhiseightiescamein.Itookhisorderandwentonmyway.ButInoticedthathecameinweekafterweek.SlowlyIbeganhavingshortconversationswithmynewguest3namewasMr.RodgersbutheinsistedthatIcallhimDon.Ilearnedthatheandhiswife4godinnerandamovieeverySaturday.5shehaddiedhecarriedonthetraditionalone.Ibeganlookingforwardtohim6comeinandtellingmehismoviereviews. Asthe7weekwentonIbegantositandreallytalkwithDon.Wetalkedabouthiswifehisdaysandhisson.8finalwebegantotalkaboutmydreamsandstudies. SincemeetingDonIhavelearnedthatstrangerscanbecomefriendsandthatlifecanbe9muchenjoyableifImakefriendlyconversations.AfterallIbecamemorethanjusthiswaitress.Ibecame10hefriendtoo. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10.
25分假如你是李华你的英国笔友Lily在她的微博中说她为了减肥吃减肥药而且经常不吃饭导致身体变得很虚弱状态很不佳.请你在她的微博上用英文给她留言内容包括: 1.对她的现状表示担心; 2.指出吃减肥药以及经常不吃饭的坏处; 3.提出一些健康的减肥方法如慢跑定期到健身房健身等. 注意:1.词数100个左右;2.可以适当增加细节以使行文连贯. 参考词汇:减肥药weight﹣losspill;慢跑jogging;健身房gym Yours LiHua.
甲乙两人分别加工100个零件甲第1个小时加工了10个零件之后每小时加工30个零件乙在甲加工前己经加工了40个零件在甲加工3小时后乙开始追赶甲结果两人同时完成任务设甲乙两人各自加工的零件数为y个甲加工零件的时间为x时y与x之间的函数图象如图所示.1在乙追赶甲的过程中直接写出乙每小时加工零件的个数.2求甲提高加工速度后甲加工的零件数y与x之间的函数关系式.3当0≤x≤3时直接写出甲乙两人相差12个零件时x的值.
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教案备课库