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如图所示是小华穿着早冰鞋玩轮滑的一个场景，小华在将要碰撞到墙的瞬间她用力向前推墙结果她向后运动．请用学过的物理知识回答下列问题． （1）为什么小华向前推墙小华却向后运动？ （2）为什么小华手离开...
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小华同学穿着旱冰鞋用力推墙时自己却向后运动这一现象说明力可以改变物体的同时也说明了物体间力的作用是．
如图所示小华在滑冰场上快速滑行在10s内滑行了80m她和冰刀的总质量为30kg已知每只冰刀与冰面的接
如图7所示小华同学穿着旱冰鞋用力向前推墙她将向后运动此时选取的参照物是_________上述现象包含
如图小华同学穿着旱冰鞋用力推墙时自己却向岳运动这一现象说明了力可以改变物体的同时也说明了物体间力的作
如图11所示小华在滑冰场上快速滑行在10s内滑行80m她和冰刀的总质量为40kg已知每只冰刀与冰面的
如图A小华穿着旱冰鞋用力向左推墙时她自己将受到向右的推力如图B小明游泳时手向后划水水对小明有向前的
下雪了小华同学自制了一个雪橇并用雪橇拉着隔壁的小妹妹在水平的冰面上玩如图所示．已知小妹妹和雪橇的总
下雪了小华同学自制了一个雪橇并用它拉着妹妹在水平的冰面上玩如图已知妹妹和雪橇的总重力为400N小华所
下雪了小华同学自制了一个雪橇并用它拉着妹妹在水平的冰面上玩如图小华所用的拉力为30N．请在图中画出雪
某日小华在乘坐电梯的时候由于电梯出现故障小华和电梯一起自由下落关于此下落过程下列说法正确的是
小华会撞到电梯的天花板
小华只受两个力的作用
小华对电梯地板的压力为零
小华处于超重状态
小华从背后推小明小明前进小华后退说明力的作用是▲的.他们脚下的溜冰鞋安装了小轮子是为了▲摩擦增大/减
如图11所示小华在滑冰场上快速滑行在10s内滑行80m她和冰刀的总质量为40kg已知每只冰刀与冰面的
如图A.所示小华穿着旱冰鞋用力向左推墙时她自己将受到向右的推力如图B.所示小明游泳时手向后划水水对小
如图小华同学穿着早冰鞋用力推墙时自己却向后运动这一现象说明了力可以改变物体的同时也说明了物体间力的
如图小华同学穿着旱冰鞋用力推墙时自己却向后运动这一现象说明了力可以改变物体的______同时也说明了
如图所示小华同学穿着旱冰鞋用力向前推墙她将向后运动．根据此情景提出一个与物理知识有关的问题并加以回
如图7所示小华同学穿着旱冰鞋用力向前推墙她将向后运动此时选取的参照物是_________上述现象包含
如图11所示小华在滑冰场上快速滑行在10s内滑行80m她和冰刀的总质量为40kg已知每只冰刀与冰面的
下雪了小华同学自制了一个雪橇并用它拉着妹妹在水平的冰面上玩如图．已知妹妹和雪橇的总重力为400N小华
如图所示小华同学穿着旱冰鞋用力向前推墙她将向后运动根据此情景提出一个与物理知识有关的问题并加以回答问
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中国将不会放弃搜寻失联飞机MH370.giveup.
﹣Whichwouldyoulikecoffeeorcola?﹣thanks.I'dlikeacupoftea.A.Either B.Both C.None D.Neither
Nowthereisafamilyproblem.Nearlyeveryparentsaysthatwenevergrowup.Infactweareprobably14or15yearsold.Intheireyeswearealwayslittleonesandoftendowrongthings.ForexamplewhenIneedtostayathomealonetheyalwaysworryaboutmeandmylifewithoutthem. Mostparentsalwaysthinkthattheyhaveofferedthebestthingstheycantomaketheirchildrenliveinacomfortableworld.Theybuytheirchildrenprettyclothescoolshoeseverythingthattheycanfortheirdearchildren.Inreturntheyonlywanttheirchildrentogetgoodresultsintheexams. Butwhystillcan'ttheirchildrenunderstandthem?Doesitmeanthatwestillwantmorematerial物质things?No.Asamatteroffactwhatwewantisatruefamily.Whatdoesatruefamilymean?Ithinkitmeansaplacewherewecanhideourselvesfromthecoldworldoutside.Fromherewecangetwarmthwecangetconsolation安慰andwecangethappiness.Andoneimportantthingisthatweshouldbestrongerandmoreconfident自信的intheoutsideworldbecauseweknowthatwehaveatruefamily. SoIthinkthatparentsshouldsitdowntotalkwiththeirchildrentoletthemknowthattheyhaveatruefamilysothechildrenandtheirparentscouldunderstandoneanothermoreandmore.Thenparentswillnottreattheirchildrenaslittleones. 41.Inourparents'eyeswe. A.wehavegrownup B.weneverdoanythingwrong C.Wearealwayslittleones D.weshouldn'tworrythem 42.Whatdomostparentswanttogetfromtheirchildren? A.Goodresultsintheexams. B.Thebestthings. C.Prettyclothes. D.Coolshoes. 43.Whatdothechildrenreallywant? A.Morematerialthings. B.Atruefamily C.Nothingatall. D.Acomfortableworld. 44.Whatcanwegetfromatruefamily? A.Warmthandconsolation. B.Happinessandstrength. C.Confidenceandunderstanding. D.Alloftheabove.
﹣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..
I'msorryIforgottellyouthegoodnews.
对比分析①水②过氧化氢溶液③过氧化氢④氧气⑤空气用序号回答．1属于混合物的是2含有氧分子的是3组成物质的元素相同而化学性质不同的两种物质是
Jennyyoushouldpracticeasoftenasyoucanthepianocompetition. A.fail B.tofail C.win D.towin
为探究催化剂对过氧化氢H2O2分解的催化效果研究小组做了如下实验1实验一图中的实验选填能或不能证明MnO2是过氧化氢分解反应的催化剂理由是该实验无法证明MnO2在化学反应前后质量和不改变．2实验二从表格的设计可以看出该实验的目的是探究MnO2的对生成氧气体积的影响．
下列有关实验操作方法或实验结论的说法中正确的是A．制取气体时先检查装置的气密性后装药品B．用肥皂水鉴别软水和硬水时产生泡沫多的是硬水C．用托盘天平称量5g氯化钠固体先放药品后放砝码最后调节游码D．加热KMnO4并用排水法收集O2的实验结束时先熄灭酒精灯后从水中移出导管
王老师的女儿擅长做蛋糕.begoodat.
Iwanttodrinksome.I'mthirsty口渴的.
为了使同学们更加健康快乐地成长学校决定向同学们征求建议.假如你是王涛用英语向校长写一篇80个词左右的建议信.注意:文中应包含所有要点并适当发挥;不能出现真实的校名和姓名.开头和结尾已给出不计入总词数. DearHeadmaster I'mverygladtowritealettertoyou.Thesedayswearetalkingabouthowtohaveabetterschoollife.Herearesomeofmysuggestions.FirstIhopeourschoolwill Hopemysuggestionswillbehelpful.Thanksforreadingmyletter! Yourssincerely WangTao.
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.
﹣WhynotlistentoBBCnewstoimproveyourlisteningskills? ﹣It'sdifficultIcan'tfollowit. A.such;that B.so;that C.too;to D.so;to
IfyoudoyourbestI'msureyou'lldoitwell. A.can B.could C.areableto D.beableto
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.
Thisisnotadiet.It'sasimplewaytoloseweight.Andyoudon'tevenhavetogiveupthefoodyouloveorjoinagym.Youjustfollowsomehabitsthatthinpeoplehave.Keepthemandyou'llbecomethin. 1Wake﹣up Whenyouwakeupinthemorningsitupslowlywithoutusingyourhands.Withlegsstraightoutbend弯曲forwarduntilyoufeelsoreinyourback.Itwillburnabout10calories热量单位卡路里. 2Startwithsoup Whenyouhaveamealorderaclearsoupandhaveitbeforehavingthemainfood.Inthiswayyou'llfeelfullersoyou'lleatlesswhenthemainfoodcomes. 3Anappleormoreaday Applesarefulloffiber纤维andwatersoyourstomachwillwantless.Thestudyshowsthatpeoplewhoeatatleastthreeapplesadayloseweight. 4Standupandwalkaround Everytimeyouusethemobilephonestandupandwalkaround.Heavypeoplesitonaverage平均twoandahalfhoursmoreeachdaythanthinpeople.Thisskillisveryimportantasstandingupandwalkingaroundwillburn50ormorecalories. Usetheseskillsandyouwillhaveabigweightloss. 41.Whichofthefollowingmaytheauthordisagree? A.Sittingupslowlywithoutusingyourhandshelpsburncalories. B.Eatingappleseverydayisgoodforpeople'shealth. C.Youhavetojoinagymifyouwanttoloseweight. D.It'sgoodtowalkaroundwhiletalkingonthemobilephone. 42.What'thepurposeofthepassage? A.Togivesomeadviceonhowtoloseweight. B.Toadvisepeopletoeatappleseveryday. C.Totellpeoplehowtoenjoyabetterlife. D.Toadvisepeopletogiveupbadhabits. 43.Inwhichpartofanewspaperwouldyoumostprobablyreadthepassage? A.Shopping. B.Teaching. C.Family. D.Health.
Themonkeyclimbsthetreewell.用can't改写句子Themonkeythetreewell.
﹣willthedinnerbeready? ﹣Justaminute. A.Howmuch B.Howlong C.Howsoon D.Howoften
Pleasetheappleswithaknife.
托尼已经决定今年年底就不再踢足球了.giveup.
Becareful!Somepeoplemayusethetruthtodeceive欺骗.Whensomeonetellsyousomethingthatistruebutmissesimportantinformationthatshouldbeincludedhecancreateafalse不真实的impression. ForexamplesomeonemightsayI'vejustwon100dollarsonthelottery彩票.Itwasgreat.Itookthatticketbacktothestoreandtheygaveme100dollars! Thismanwasawinnerwasn'the?Maybemaybenot.Wethendiscoverthathepaid200dollarsfor200ticketsandonlyoneticketwon.He'sreallyabigloser. Hedidn'tsayanythingthatwasfalsebuthedidn'tgivetheotherimportantinformation.That'scalledahalf﹣truth.Half﹣truthsarenotliesbutinfacttheyaredishonest. Advertisementssometimesusehalf﹣truths.It'sagainstthelawtolieinadvertisementssotheytrytodeceivewiththetruth.AnadvertisementmightsayNine﹣tenthsofstudentssaidthatanewkindofdevice仪器isgoodforthemtorememberwords.Itdoesn'ttellyouthattheyonlyaskedtenstudentsandnineofthemusethiskindofdevice. Thiskindofthinghappenstoooften.It'sasadfactoflife:Liesareliesandsometimesthetruthcanlieaswell. 52.Whenpeopletellpartofthetruth. A.theyarereallylying B.theyarelotterylosers C.theymaynotbehonest D.theymaywantyoutobuysomething 53.WhichofthefollowingisTRUE? A.Thetruthcanbeusedbydishonestpeople. B.Allliesarehiddeninthetruth. C.Nine﹣tenthsofdoctorsworkforFancyCompany. D.Advertisementsarefulloflies. 54.Thewriterwritesthispassagetotellusto A.Thinkcarefullywhentheyreadorhearsomething. B.Spendnomoneyonlotterytickets. C.Nevertrustanyonenomatterwhattheysay. D.Alwaystellthetruth. 55.Whichisthebesttitleforthepassage? A.TelltheTruth B.EverybodyLies C.LieWiththeTruth D.LiesAreLies.
某化学兴趣小组在实验室中对一烧杯内浑浊的湖水进行了简单的净化请回答有关问题1保持水的化学性质的最小粒子是2除去水中不溶性杂质的操作是①请你帮助他们选出该操作所必须的仪器多选A．试管 B．酒精灯 C．玻璃棒 D．烧杯 E．铁架台带铁圈 F．托盘天平 G．漏斗②玻璃棒的作用是③若滤液仍然浑浊其原因可能是答出一条即可3再用活性炭除去水中的异味这是利用活性炭的作用4最后进行蒸馏所得蒸馏水是填硬水或软水饮用硬度过大的水不利于人体健康日常生活中使硬水软化的方法是
OurteacheroftenmakesusEnglishwords. A.payattentiontopronounce B.topayattentiontopronounce C.payattentiontopronouncing D.topayattentiontopronouncing
Ayoungwomaninhertwentieswassittingonthetrainnexttohermother.Theybothlookedtiredbut56exciting. Theyoungwoman57lookoutfromthetrain'swindow.SuddenlysheshoutedMomlookthetreesarebehindus!Hervoicewassoloudthateveryoneonthetrain58hear. Momsmiled.Butayoungcouplewhoweresittingnearbylookedattheyoung59womanchildish孩子气的behaviorwithpity.PoorgirlThere60besomethingwrongwithhermind.theythought. Afewminuteslatertheyoungwomanshoutedagain.Momlook!Theclouds61runwithus!Momsmiledagain.Andsheseemedveryhappywithherdaughter'swordsthatshesaidjustnow. 62finalthecouplecouldn'thelp63asktheoldwomanSorryifweoffend冒犯you.Butwhydon'tyoutakeyourdaughtertoagooddoctor? TheoldwomansmiledandsaidActuallywehavejustcomefromahospital. Thenyoushouldgotoa64goodone.Becauseitseemsthatyourdaughter'ssituation状况hasn'timproved.saidoneof65they.Theyfeltsobadfortheoldwoman. NoinfactI'mveryhappywiththetreatment治疗saidthemotherMydaughterwasblindfrombirth.Todaysheisseeingtheworldforthe66onetime. Everysinglepersonhasastory.Don'tjudge判断peoplebeforeyouknowthemwell.The67truemightsurpriseyou. 56. 57. 58. 59. 60. 61. 62. 63. 64. 65. 66. 67.
Thiskindofpeachlooksreallynicebutitverysour. A.tastes B.looks C.feels D.sounds
学生在学校不允许使用手机.beallowedtodo.
﹣Didyougotothecinemalastnight? ﹣Ohno.Igotothecinema.Theticketsyouknowaretooexpensive. A.always B.hardly C.usually D.often
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