专题一碰撞与动量守恒定律①守恒②守恒③守恒④有损失⑤守恒⑥最大⑦mv⑧相同2mEk⑨p22m⑩⑪Ft⑫Δp⑬p1′+p2′⑭m1v1′+m2v2′⑮0⑯远大于⑰零一、动量定理的应用1.动量定理的应用:(1)定性解释一些物理现象:在动量变化一定的情况下,如果需要增大作用力,必须缩短作用时间。如果需要减小作用力,必须延长作用时间,这就是缓冲作用。(2)定量计算:在用动量定理计算有关问题时,要注意力必须是物体所受的合外力以及动量定理的矢量性,求...
Module7Computers模块知识盘点1模块知识盘点Module7Computers2常用短语模块知识盘点1.connect...to...把和相连2.turnon/off打开/关掉3.onthecomputer在电脑上4.openanewdocument打开一个新文件5.clickthemouseon...在上点击鼠标6.usethekeyboard使用键盘3模块知识盘点7.writeanameforit给它命名8.writeinthebox写在框里9.put...in...把放在里面10.sharesth.withsb.和某人分享某物11.inmyhome在我家12.goontheInternet上网13.che...
模块一基本问题分析第二课时1问题四:函数的值域问题例6求下列函数的值域:(1)()12;fxxx22(2)().1xxfxxx1(,2]1[3,1)例7设b>a>0为常数,函数f(x)=2x-x2,已知当x∈[a,b]时,f(x)的值域是,求a,b的值.11[,]ba151,2ab2问题五:函数性质的判定和证明例8已知函数f(x)=log2(1+x)-log2(1-x)试确定f(x)的奇偶性和单调性.例9设a>0,且a≠1为常数,试确定函数的奇偶性和单调性.2()log(1)afxxx奇函数,增函数奇函数;...
1GrammarandusageSimileandmetaphor2Myloveislikeared,redrose.It’srainingcatsanddogs.Seniorcitizensarerespectedinourcountry．Figurative(比喻的)languageComparedtomyhouse,hisisapalace.（Itisusedtohelpreadersimaginewhatishappeninginatext.）3Myloveislikeared,redrose.—RobertBurnsAsimile4Comparedtomyhouse,hisisapalace.Ametaphor5themostcommonlyused61.Similarly,manyordinaryjobsmaylookdull,buttheyareesse...
GrammarandusageUnit1PresentperfecttensePresentperfectcontinuoustense1PresentperfecttenseStep1Lead-in•GooverthenewsstoryonPage2andfindthesentencesusingthepresentperfecttense.•Pleaseexplainwhythetenseisusedinthesesentences.2ThedisappearanceofJustin_______(make)Kellyveryunhappy.hasmade1.Weusethepresentperfecttensetotalkaboutthingsthathappenedintherecentpast,butareconnectedtothepresent.Step2Point...
Unit15LearningCommunicationWorkshopwriting1Objectives:Intheclass,wewillbeableto•Uselinkingwords•Writeapersonalessayaboutyourschool2DifferentSchoolsTraditionalSchoolsAlternativeSchools3Reviewing:talkaboutthedifferencesbetweentraditionalandalternativeschoolsTraditionalSchoolsAlternativeSchoolsTeachersStudentsClassroomlearningT4TraditionalSchoolsAlternativeSchoolsTeachersstrictwithstudentsDothis...
PeopleWarm-upWarm-up1Bytheendofthislesson,you’llbeableto:•getkeyinformationabout4people’sappearanceandidentifytheminthepicture;•describepeople’sappearance;•understandandusethewordsandexpressionsinthequiz.•havesomeimpressiononIQbyreadinganddiscussingthequiz.Objectives2Warm-upWarm-upcomplexionfacialexpressionsspecialfeaturesappearanceofapersonhairageclothinggeneral...3WarmupWarmupAgeGenera...
牛津英语模块五Unit1Task课件制作思路及使用说明11.SubjectThesubjectoftheunit:GettingalongwithothersThesubjectoftheTask:writingalettertoafriend.•Itincludesthreeparts,eachofwhichconsistsofaskillsbuildingandastep.22.Basiccontents•Firstpartmainlyconcernslisteningandreadingexercise.Itmakesstudentspracticewritingdownthenotesthroughtwopiecesofmaterials(OneofthemisCallingTeenTalkforadvice)aboutgivingan...
牛津高中英语1—8模块重点词汇讲解（一）11.inform(P16,M1):WeregrettoinformyouthatourlibrarywillbeclosednextWednesday,ThursdayandFridayforthesportsmeeting.inform2Usage1:inform+obj.+(that)/wh-e.g.:(1)IinformedhimthatIwouldnotbeabletoattendthemeeting.我告诉他说我不能参加会议了。3(2)Couldyoupleaseinformmehowtogoaboutcontactingalawyer?你能告诉我如何联系一位律师吗？4Usage2:inform+obj+(of/about)e.g.:(1)...
明高考析题型选修3－4振动与波动光与电磁波1明高考析题型一、聚焦选择、填空题考法——振动与波动光与电磁波1．(2017全国Ⅰ卷)如图(a)，在xy平面内有两个沿z方向做简谐振动的点波源S1(0,4)和S2(0，－2)。两波源的振动图线分别如图(b)和图(c)所示。两列波的波速均为1.00m/s。两列波从波源传播到点A(8，－2)的路程差为________m，两列波引起的点B(4,1)处质点的振动相互________(填“加强”或“减弱”)，点C(0,0.5)处质点的振动相...
模块备考方略选修81栏目导航模块知识结构模块题型总结模块核心素养2模块知识结构Unit话题功能语法写作Unit1AlandofdiversityHistoryandgeographyoftheUSANationalityandpeopleCustomsandculture表达鼓励别人说话以及方向位置的常用句型名词性从句用作主语、宾语和表语写一篇旅游日记3Unit话题功能语法写作Unit2CloningNaturalclonesandman-madeclonesThehistoryofcloningControversyaboutcloning表达表扬和鼓励，接受和拒绝的常...
Senior2Module6Unit3UnderstandingeachotherWelcometotheunit南京十二中许文军12Halloween万圣节Whatkindofholidayisthis?3WhatdoyouknowaboutHalloween?4originofHalloween:Onestorysaysthatthedisembodiedspiritsofallthosewhohaddiedthroughouttheprecedingyearwouldcomebackinsearchoflivingbodiestopossessforthenextyear.Itwasbelievedtobetheironlyhopefortheafterlife.TheCeltsbelievedalllawsofspace5OnthenightofOcto...
模块一基本问题分析第一课时1t15730p2问题一:集合的基本概念和运算(2){-3,0,1,2,3,4}.例1设U为全集,集合A={0,2,3,4},B={-1,0,2},若={-3,-1,1}.(1)写出的所有子集;(2)求.UAðUAðBAB(1){0},{2}.{0,2},Ф;2ABU例2已知全集U={x∈N|x≤8},集合A、B满足={2，4}，={1，3，5，7}，求集合B.UABðUABð1357240683问题二:集合语言的运用和转化例3设集合A={x|x2-x<0},集合B={x|x2<loga(x+1)},若,求实数a的取值范围.A...
ProjectThewanderingRoma12Carmen3Roma(Gypsy)4567Fastreading2.Whatdoeswanderingmeaninthispassage?ToexplainthehistoryoftheRomaandthereasonsfortheirmovement.1.Whatisthisarticleaimedtodo?8Theword‘wander’meanstomoveaboutorfromplacetoplacewithoutanypurpose.Fromtheguidelines,wecanknowthetitlereferstothegroupofpeople,theRoma,whokeepmovingfromplacetoplace.9ListeningWhat’stherouteoftheRoma’smovement?1...
M5U1WordPowerAdjectivestodescribepersonality1教学目标:通过学习形容词描述人的品性,倡导积极向上的人格品质.１学习形容词描述人的品性２判断此类形容词的褒贬３区分同义词和反义词2Stepone:LeadinginSteptwo:LearningthenewwordsStepthree:Usingthenewwords•Task1•Task2•Task3Stepfour:Homework3Whoishe?Stepone:Leadingintallblackthinactiveshyyourteacher4Adjectivestodescribepeople’spersonality(品格).5StepTwoLea...
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模块一基本问题分析第二课时1问题四:函数的值域问题例6求下列函数的值域:(1)()12;fxxx22(2)().1xxfxxx1(,2]1[3,1)例7设b>a>0为常数,函数f(x)=2x-x2,已知当x∈[a,b]时,f(x)的值域是,求a,b的值.11[,]ba151,2ab2问题五:函数性质的判定和证明例8已知函数f(x)=log2(1+x)-log2(1-x)试确定f(x)的奇偶性和单调性.例9设a>0,且a≠1为常数,试确定函数的奇偶性和单调性.2()log(1)afxxx奇函数,增函数奇函数;...
1TeachingAims1.Tounderstandsentenceswith“however”or“but”.2.Totalkaboutthewaysoflosingweight.3.TogetthemainideaofthereadingpassageandfinishtheexercisesinPartA,C1andC2.2Whodoyoulikebetter?Whodoyoulikebetter?3Whodoyoulikebetter?Whodoyoulikebetter?4Whodoyoulikebetter?Whodoyoulikebetter?5LeadinSupposeyouareabitoverweight.Howwouldyouloseweight?6receivingsurgicaltreatmenttakeweight-losspills/teago...
