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如图,在△ABC中,∠BAC=90°,AD是中线,E是AD中点,过A作AF∥BC交BE的延长线于点F,连接CF. (1)求证:AD=AF; (2)如果AB=AC,试判断四边形ADCF的形状,并证...
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如图在△ABC中∠BAC=90°AD是中线E.是AD的中点过点A.作AF∥BC交BE的延长线于点F.
如图在△ABC中∠BAC=90°AD是高BE是中线CF是角平分线CF交AD于点G.交BE于点H.下面
①②③④
①②③
②④
①③
如图7在△ABC中∠C=90°AD平分∠BACAB=5CD=2则△ABD的面积是______.
如图在△ABC中∠ABC=45°∠BAC=90°AD是BC上的高沿AD把△ABD折起使∠BDC=90
.如图△ABC中∠ACB=90°AD平分∠BACDE⊥AB于E.求证直线AD是线段CE的垂直平分线.
如图在△ABC中∠BAC是钝角请按下列要求画图.画1∠BAC的平分线AD2AC边上的中线BE3AB边
我们定义如图1在△ABC看把AB点A.顺时针旋转α0°<α<180°得到AB'把AC绕点A.逆时针旋
如图在△ABC中∠C.=90°AD平分∠BACAB=5CD=2则△ABD的面积是______.
如图:1AD⊥BC垂足为D.则AD是________的高∠________=∠________=90
如图△ABC中AD是BC上的中线BE是△ABD中AD边上的中线若△ABC的面积是24则△ABE的面积
如图在△ABC中∠C.=90°∠B.=30°AD是BC边上的中线若AB=8求AD的长
如图在△ABC中∠C.=90°AD平分∠BAC且CD=5则点D.到AB的距离为__________.
已知如图所示AD是△ABC的中线DE⊥AB于E.DF⊥AC于F.且BE=CF.1AD是∠BAC的平分
如图在△ABC中∠ABC=45°∠BAC=90°AD是BC上的高沿AD把△ABD折起使∠BDC=90
阅读理解并回答下列问题已知如图在△ABC中AD是BC边上的中线且AD=BC.求证∠BAC=90°.证
如图等腰直角三角形ABC中∠ACB=90°AD为腰CB上的中线CE⊥AD交AB于E.求证∠CDA=∠
如图在△ABC中AB=AC=9∠BAC=120°AD是△ABC的中线AE是∠BAD的角平分线DF∥A
如图在△ABC中∠ABC=45°∠BAC=90°AD高沿AD把是BC上的△ABD折起使∠BDC=90
1如图在△ABC和△ADE中AB=ACAD=AE∠BAC=∠DAE=90°.①当点D.在AC上时如图
如图:1AD⊥BC垂足为D.则AD是________的高∠________=∠________=90
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8分TheTyrannosaumsrexalsocalledT.rexisknownforbeingkingofthedinosaurs.Howeverdinosaursinthesamefamilyweren'talwayssuchhugebeasts.EarlyancestorsoftheT.rexwereprettytinyscientistssay. ScientistshaveidentifiedanewcousinoftheT.rex.Thisdinosauronlyreachedaheightof3feet.That'sroughlytheheightofatoddler.Ifitstretcheditsduck﹣billedheadanadulthumanmaybewouldbelookingatitintheeyesaidSterlingNesbitt.Hediscoveredthedinosaur.NesbittisapaleontologistatVirginiaTech.Apaleontologistisapersonwhostudiesfossils. ThenewdinosauriscalledSuskityrannushazelae.Theanimaldatesback92millionyears.Thisisabout20millionyearsbeforetheT.rexstompedtheEarth. Thenewlydiscoveredcousinwasaboutthreetimeslongerthanitwastall.Itweighedbetween45and90pounds.That'salmostnothingcomparedtothe9﹣tonT.rex.TheT.rexweighednearlyasmuchastwohippos. Suskityrannushazalaeisn'tthefirstorevensmallestoftheTyrannosaurusfamilytree.StillNesbittsaiditprovidesthebestexampleofhowthisfamilyofsmallerdinosaurschangedovermillionsofyears.Theybecametoweringbeasts.ThehugeT.rexisthesubjectofhorrormovies. HansSuesstudiesancientlivingthingsattheSmithsonianInstitution.Hewasn'tpartofthestudy.Suessaiditwasanimportantfind.SuskityrannusisthefirstreallygoodrecordoftheearlytyrannosaursinNorthAmericahesaid. Thesemeat﹣eatersweren'tparticularlybigcomparedwithotherdinosaursaliveatthattime.Itisunclearwhydinosaursinthisgrouplaterbecamesoenormous. Nesbittsaidthenewlydiscoveredspeciesisprobablyamongthelastofthelittleguys.Itwasbiggerthanearliertyrannosau.andhadbigfeetneededforspeed.TheT.rexlostthese. 1WhySuskityrannushazelaeisthoughttobeagoodexamplefromtheTyrannosaurusfamilytree A.Itshowsthattyrannosaurswerequiteheavy. B.Itisthefastesttyrannosaureverfound. C.Itshowshowthetyrannosaurschangedovertime. D.Itisthesmallesttyrannosaureverfound. 2HowwasSuskityrannushazelaedifferentfromT.rex A.ItwassmallerthanT.rex. B.ItwasbiggerthanT.rex. C.ItatemoreplantsthanT.rex. D.ItranmoreslowlythanT.rex. 3WhichstatementistrueaboutT.rex A.Ithadaduck﹣billedhead. B.ItwasdiscoveredbyNesbitt. C.Itwasasheavyasahippo. D.Itwasameat﹣eatinganimal. 4Inwhichsectionofanewspapermaythistextappear A.Entertainment. B.Health. C.Education. D.Science.
已知am=3an=2则a2m-n的值为
25分假定你是李华.你在网上得知在你市留学的Larson最近总是失眠你决定给予他帮助.就此请你用英语给他写封电子邮件内容包括: 1.进行安慰; 2.询问失眠的具体原因; 3.约定地点以便当面详谈. 注意: 1.词数100左右; 2.可以适当增加细节以使行文连贯.
8分WhenIwas12yearsoldIalreadyknewthatmyteenyearsweregoingtobetheworstyearsatmylife.Iwasatotaloutsiderbullied欺凌atschool.Ifeltcompletelyaloneinmysmalltown. ButbystartingtodovolunteerworkwhenIwas14Iturnedmyproblemintoapassionforhelpingothers.Theopportunitytopracticekindnessmademefeellikemylifehadagreaterpurpose.ThemorepositiveenergyIsharedthemorekindnessandappreciationIreceived.Irealizedthatmypurposeinlifewouldbetoreachouttopeoplespecificallyteenagersandhelpthemfeellessalone. Booksweremytimefriendsbackthen.Iwassothankfulthattheauthorswrotethosebooks.Thekindnesstheyofferedmewiththeirbookssavedmylife.OneofmybiggestdreamswastobecomeanauthorsoIcouldwritebooksthatwouldhelpotherteenagersthewaythosebookshelpedme. AftersurvivingterribleexperiencesatschoolandathomeImadeachoicetotaketheoptimisticpositiveroadinthenextstepsofmyjourney.MydreamcareeriswhatIamdoingnow.Ihavebeenafull﹣timeauthorofteennovelssince2007andamgratefulforthisamazingopportunitytoreachouttoreaderseverysingleday. KindnesssavedmewhenIneededhelpthemost.Evensmallactsofkindnesscanchangesomeone'slife.Youneverknowwhatsomeoneelseisgoingthrough.Butbypracticingdailykindnessyoubecomeanarchitectofpositivechange. 1Whatwastheauthor'slifelikewhenhewas12 A.Boring. B.Peaceful. C.Unhappy. D.Meaningful. 2Howdidthevolunteerworkbenefittheauthor A.Itmadehimpopularinhistown. B.Ithelpedhimfindthemeaningoflife. C.Ithelpedhimunderstandothers'livesbetter. D.Ithelpedhimfallinlovewithreading. 3Whydidtheauthorchoosewritingashisjob A.Hewasinspiredbyhisteacher. B.Hecouldpasspositiveenergytoreaders. C.Hewantedtosharehisschoolexperiences. D.Hefoundhehadatalentforwriting. 4Whatdoestheauthorsuggestreadersdointhelastparagraph A.Saynotobulliesbravely. B.Inspireotherstomakepositivechanges. C.Treatotherswithkindnessindailylife. D.Learntocaremoreaboutothers'feelings.
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如图数轴上表示1的对应点分别为点A点B.若点A是BC的中点则点C所表示的数为 A. B. C. D.
8分IeohMingPeioneofthelastgreatmodernistarchitectshasdiedaged102.AlthoughheworkedmostlyintheUnitedStatesPeiwillalwaysberememberedforaEuropeanproject:hisredevelopmentoftheLouvreMuseuminParisinthe1980s. PeiwasthefirstforeignarchitecttoworkontheLouvreinitslonghistoryandinitiallyhisdesignswerefiercelyopposed.ButintheendtheFrench﹣andeveryoneelse﹣werewonover.HisglasspyramidoutsidetheLouvrecompletedin1989isnowoneofParis'mostfamouslandmarks. PeiwasborninChinain1917intoawealthyfamily.Hisfatherwasabanker.Hisartisticmother﹣acalligrapherandmusician﹣hadthegreaterinfluenceonhim.DespitenotspeakingEnglishhemovedtotheUSattheageof18tostudyatPennsylvaniaMITandHarvard.HeworkedasaresearchscientistfortheUSgovernmentduringWorldWarTwoandwentontoworkasanarchitectfoundinghisownfirmin1955.Hecarriedonworkingwellintooldagecreatingoneofhismostfamousmasterpieces﹣theMuseumofIslamicArtinDohaQatar﹣inhis80s. HehasdesignedbuildingshotelsschoolsandotherstructuresacrossNorthAmericaAsiaandEurope.HisotherworkincludesDallasCityHallandJapan'sMihoMuseum.HisstylewasinfluencedbyhisloveofIslamicarchitecture.Hisfavouredbuildingmaterialswereglassandsteelwithacombinationofconcrete. HewonavarietyofawardsandprizesforhisbuildingsincludingtheAIAGoldMedalthePraemiumImperialeforArchitecture.In1983PeiwasgiventhefifthPritzkerArchitecturePrizeforgivingthe20thcenturysomeofitsmostbeautifulinteriorspacesandexteriorforms.Heusedhis$100000prizemoneytostartascholarshipfundforChinesestudentstostudyarchitectureinAmerica. InpersonPeiwasalwaysneatlydressedgood﹣temperedcharmingandunusuallymodest. 1WhatdoweknowaboutPeiandhisworkontheLouvreMuseum A.TheFrenchapprovedofhisdesignsatfirst. B.PeiwastheonlyforeignexpertemployedbytheLouvre. C.Peimadeuseofglassinhisdesigns. D.Peiretiredaftercompletingthework. 2Whichisthecorrectorderoftimeforthefollowingfactsinthepassage ①HereceivedthePritzkerArchitecturePrize. ②Hefoundedhisownfirm. ③HecreatedtheMuseumofIslamicArt. ④Heworkedasaresearchscientist. A.①③②④ B.④①②③ C.④②①③ D.①④③② 3WhatwordscanbeusedtodescribePeiaccordingtothepassage A.Productiveandhumorous. B.Generousandmodest. C.Determinedandoutgoing. D.Attractiveandresponsible. 4Whatcanbethebesttitleofthepassage A.LouvrePyramidArchitectDiesAged102 B.PrizesAwardedtoPei C.LandmarksCreatedbyPei D.AFamousArchitectPassedAway
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求下列各式中未知数的值|a-2|=
6分EachyearTimemagazinepicksthebestoftheyear'sinventionsthatwillchangehowweliveworkandplay. Aira Forpeoplewhoareblindeverydaytaskssuchaswalkingtoschoolorwashingclothescanbetough.Whati£theycouldborrowtheeyesofsomeonewhocanseeThat'sthethinkingbehindAira.Airaisaservice.Userssendlivevideoesoftheirsurroundingstoanagent.Thisisdonewithspecialglassesorasmartphoneapp.Theagentsarealwaysavailable.Theycananswerquestionsdescribeobjectsandguideusersthroughalocation. 3MSmog﹣reducingGranules Smogisatypeofairpollution.Itcomesfromcarandfactoryemissions.Thecompany3Mhascreatedanewmaterial>3Msmog﹣reducinggranules微粒whichcanbreakdownsmoggranulesintheair.Thebroken﹣downgranulesarewashedawaythenexttimeitrains.Thegranuleswillhelpreduceairpollution. TheWhillModelCI Morethan3millionAmericansusewheelchairstogetaround.Butmostwheelchairsarehardtomoveonmanysurfaces.TheWhillModelCIisdifferent.Itisanewelectricwheelchair.Itcanclimbobstaclestwoincheshighandmovearoundintightspaces.Thewheelchaircanalsobetakenapartinminutes.Thismakesthedisabledeasytotransport. Allbirds Manyshoepartsarenotenvironmentallyfriendly.Allbirdsistryingtochangethat.ItistestinganewmaterialcalledSweetFoamwhichismadefrompartsofthesugarcane甘蔗plantthatwouldbethrownaway.AllbirdshasstartedusingSweetFoaminalineofflip﹣flops人字拖.Itplanstousethematerialinmoreofitsproductlines. 1WhoisAirafitfor A.Factoryworkers. B.Blindpeople. C.Highschoolstudents. D.Serviceagents. 2What'sthepurposeofdesigningtheWhillModelCI A.Todriveacareasily. B.Toreducetrafficaccidents. C.Toofferthedisabledconvenience. D.Toovercomeobstaclesinlife. 3Whichinventionsareenvironmentallyfriendly A.AiraandtheWhillModelCI. B.TheWhillModelCIandAllbirds. C.Airaand3MSmog﹣reducingGranules. D.3MSmog﹣reducingGranulesandAllbirds.
15分OnthefirstdayofherworkSallyfoundthataclassfullof1problemwaswaitingforher.Sixteachers2quitbeforeshecametotheclass.Whenshewalkedintotheclassroomitwas3amess:twoboyswerefightinginthefarcorneryettherestoftheclassseemednottonoticethem;somegirlswerechattingandsomewererunning;paperfoodpackagesandothergarbage4putonthedesk…Justwhenshewasabouttospeakastudent5wastwentyminuteslaterushedinandpushedheraside! Sallywalkedontotheplatformpickedupapieceofchalkandwroteontheblackboard:Rule1:Weareafamily!Allstudentsstopped6lookather.AndshecontinuedwithRule2Rule3…Inthe7followweeksSallyworkedout10classrulesandpostedthemonthewallsoftheclassroom.She8patientexplainedalltherulestothestudentsandrequiredeveryonetofollowthem. SurprisinglySallywasnotdrivenoutlike9formerteachers;insteadshewonrespectfromthestudents.Duringtheyearshewitnessedgradualchangesintheclass.Atthegraduationceremonyjustassheexpectedshewasveryproudtostandwithaclassfullofcaregoodmannersand10confident.
若=2=-3则b-a的值是
10分假定英语课上老师要求同桌之间交换修改作文请你修改你同桌写的以下作文.文中共有10处语言错误每句中最多有两处.每处错误仅涉及一个单词的增加删除或修改. 增加:在缺词处加一个漏字符号∧并在其下面写出该加的词. 删除:把多余的词用斜线\划掉. 修改:在错的词下划一横线并在该词下面写出修改后的词. 注意:1.每处错误及其修改均仅限一词; 2.只允许修改10处多者从第11处起不计分. BecausemybadgradesinprimaryschoolIcouldonlyenteraaveragemiddleschoolwhichwasequippedwitholddesksandoldchairs.AtfirstIwasn'tsatisfyingwiththeshabbyclassroomandotherthingaroundme.AndsoonIrealizedthatitwasnousecomplainingandIshouldfeelluckthattherewereexperiencedteachersteachingmeandkindclassmateskeepmecompany.ThereforeImakeupmymindtostudyharderandharder.Itwasn'tlonguntilIcamefirstintheclass.FinallymyeffortswerepaidoffandIwasadmittedintothebesthighschoolinmycity.
计算-3a42-a·a3·a4-a10÷a2
15分Playingisseriousbusinessforchildren.As1matteroffactit's2theydobest!AskthemwhytheydoitandkidswillprobablysayBecauseit'sfun!Butit'smuchmorethanthat.It'salsogoodforthem.Studiesshowthatfrombirthbabiesbeginlearningthroughplay.Theyuse3themfivesensestogetknowtheirnewworld. Touchingallowsthem4discoverhowdifferentthingsfeel.Brightlycoloredtoysandclothinghelpdevelopababy'ssenseofsight. Whensmallchildrenchoosewhichtoytoplay5theybegindevelopingtheirabilitiesin6makedecisions.Childrenlovetoysthatallowthemtousetheir7imagine.Sometimesanemptyboxismorefunthanahigh﹣techtoy.That's8aboxcanbecomeanythingachildimaginesittobe.CrayonspaintsandPlay﹣Doh彩色塑泥arealsogoodbecausetheyallowchildrentocreate.9traditionbuildingblocksteachimportantpre﹣mathskillslikeproblem﹣solving. Playingdoesn'tbecomeanylessimportantoncechildrenstartschool.Manyvaluablelessonsaboutlife10learnontheschoolplayground.Kidslearnhowtosharetaketurnsandplaybytherules.
计算
30分Bookshavegreatpower.Betweentheir1readerscanbetransportedtoanywhereimaginableandbecomejustaboutanyone…oranything.Unfortunatelymanychildrenallovertheworlddon'thave2tobooks. ForseveralyearsnowMariaKellerateenagerfromMinneapolisMinnesotahasbeentryingto3thatfact. Whenshewas8yearsoldMariaalready4reading.Shealsonoticedthatsomeofher5didn'treadasmuchasshedid.Whenshe6hermotherwhythatwashermothersaidthattheymightnotbeableto7books.Mariahadneverthoughtofthis.Shecouldn't8thatsomechildrendidn'thavebedtimestoriesreadtothemandshebecame9tochangethis. Withhermother'shelpMaria10ReadIndeedwhichisanon﹣profitorganizationdedicated致力于tocollectinganddistributingbookstochildren11. DuringtheearlystagesofReadIndeedMariasetthe12ofcollectinganddistributing1millionbooksbythetimeshewas18. Itdidn'ttakelongto13thatgoal﹣todateshehascollectedover2.4millionbooksandhas14themtomanystatesandcountriesaroundtheworld. ShesaidIcannotlivewithout15.AsIcontinuemymission使命Ihavelearnedthatthe16ofkidswhohavenobooksisinthehundredsofmillions.SoIjustcan't17evenafterreachingmy18goalof1millionbooks. Sherecentlysetanewgoal:to19donationstokidsinneedineverystateintheUSandeverycountryintheworld.Shekeepstrackofher20onalargemapatthewarehouse仓库whereherbooksarestoredandsorted. 1A.themes B.pages C.blanks D.columns 2A.access B.time C.power D.regard 3A.accept B.introduce C.change D.understand 4A.imagined B.advised C.escaped D.loved 5A.classmates B.students C.teachers D.relatives 6A.showed B.asked C.required D.reminded 7A.choose B.spare C.afford D.keep 8A.decide B.explain C.believe D.agree 9A.excited B.worried C.satisfied D.determined 10A.contacted B.created C.studied D.discovered 11A.insafety B.indanger C.introuble D.inneed 12A.goal B.point C.rule D.limit 13A.set B.get C.reach D.start 14A.sold B.shipped C.lent D.returned 15A.food B.water C.friends D.books 16A.number B.variety C.reasons D.doubts 17A.setoff B.getaway C.dropoff D.giveup 18A.common B.original C.important D.distant 19A.distribute B.collect C.attach D.devote 20A.experience B.research C.progress D.investment
8分Mostofusaretaughttopayattentiontowhatissaid﹣thewords.Wordsdoprovideuswithsomeinformationbutmeaningsarederivedfromsomanyothersourcesthatitwouldhinder阻碍oureffectivenessasapartnertoarelationshiptorelytooheavilyonwordsalone.Wordsareusedtodescribeonlyasmallpartofthemanyideasweassociatewithanygivenmessage.Sometimeswecangaininsightintosomeofthoseassociationsifwelistenformorethanwords. Wedon'talwayssaywhatwemeanormeanwhatwesay.Sometimesourwordsdon'tmeananythingexceptI'mlettingoffsomesteamsodon'ttakeitseriously.Idon'treallywantyoutopaycloseattentiontowhatI'msaying.JustpayattentiontowhatI'mfeeling.Mostlywemeanseveralthingsatonce.ApersonwantingtopurchaseahousesaystothecurrentownerThisstephastobefixedbeforeI'llbuy.TheownersaysIt'sbeenlikethatforyears.Actuallythestephasn'tbeenlikethatforyearsbuttheunspokenmessageis:Idon'twanttofixit.Weputupwithit.Whycan'tyouThesearchforamoreexpansiveviewofmeaningcanbedevelopedofexaminingamessageintermsofwhosaiditwhenitoccurredtherelatedconditionsorsituationandhowitwassaid. Whenamessageoccurscanalsorevealassociatedmeaning.Letusassumetwocouplesdoexactlythesameamountofkissingandarguing.Butonecouplealwayskissesafteranargumentandtheothercouplealwaysarguesafterakiss.Theorderingofthebehaviorsmaymeanagreatdealmorethanthefrequencyofthebehavior. Wewoulddowelltolistenforhowmessagesarepresented.ThewordsIfsurehasbeennicetohaveyouovercanbesaidwithemphasisandexcitementorritualistically例行公事地.Thephrasecanbesaidonceorrepeatedseveraltimes.Andthemeaningsweassociatewiththephrasewillchangeaccordingly.Sometimesifwesaysomethinginfrequentlyitassumesmoreimportance;sometimesthemorewesaysomethingthelessimportanceitassumes. 1Whatdoesthepassagemainlytellus A.Wordsprovidelistenerswiththemostimportantinformation. B.Listenerscangaininsightiftheylistenforwordscarefully. C.Thecomprehensionofamessageisinfluencedbyafewfactors. D.Whenmessagesarepresentedisofgreatimportance. 2WhatdoestheunderlinedsentenceI'mlettingoffsomesteaminPara.2probablymean A.I'mjustkidding. B.I'mjustcallingyourattention. C.I'msayingtheopposite. D.I'mgivingsomeimportantinformation. 3Whyshouldn'tpeoplerelytoomuchonwordsalone A.Wordsareusedtodescribeabigpartofthemanyideas. B.Wordsalwayssuccessfullyrepresentwhatwesay. C.Listenersmaynotdevelophealthyrelationships. D.Listenerswillfailtounderstandtheunspokenlanguage. 4HowdoestheauthordevelopPara.3 A.Byraisingquestions. B.Bylistingdata. C.Bygivingexamples. D.Byanalyzingcausesandeffects.
8分MarylandisexpectedtobecomethefirststateoftheUSAtobanfoam泡沫橡胶foodpackagingtakeoutcontainersandcups.Thenewproposedlawpassedbothofthestate'slegislativebodies立法机关thisweekwithenoughvotestooverrideapotentialrejectionsignedbyGov.LarryHoganwhohasnotpubliclysignaledwhetherhesupportedthelawornot.Thelawwouldbecomethelatestinagrowingeffortworldwidetobankindsofsingle﹣useplasticproductsduetotheirimpactsontheenvironment. WiththestatewidepreviousbaneffortMaryland'stwocountiesPrinceGeorgeandMontgomeryhadalreadybannedfoampackaging.Del.BrookeLiermanwhointroducedsimilarlegislationlastyearandin2017sayschangingpublicopinionhelpedherthirdattemptsucceed. Ithinkwehavereachedadangerpointshesays.Peopleareseeinghowcommonsingle﹣useplasticsareandthattheyarenotrecyclableandnevergoingaway.Peoplearebeginningtounderstandtheimportanceoflivingmoresustainably. Thenewlawwouldbanfoamfoodpackagingforproductspackagedin﹣stateincludingrestaurantscafesfoodtrucksandgrocerystores.Thefinalversionofthebillincludesexceptionssuchasmeat.ThebanwouldgointoforceonJuly12020andwouldcarryfinesof﹩250. ThelegislationwasopposedbytheMarylandRetailersAssociationwhichwarnedthatoutlawingfoampackagingcouldhurtsmallbusinessesbyhighercosts.Foampackagingremainspopularamongrestaurantsandthefoodindustrybecauseitislightweightinexpensiveandkeepsfoodanddrinkshot. Foamfoodcontainershavebeenbannedincitiesorcountiesin11statesincludingSeattlePortlandWashingtonD.C.SanFranciscoandnumerousothercitiesinCalifornia.AbaninNewYorkCitytookeffectatthebeginningofthisyearafteralonglegalbattleendedlastsummer. 1HowdidMarylandcarryoutthebanoffoamfoodpackaging A.Bypassinganewlaw. B.Byfiningfoampackagingusers. C.Byclosingsomelocalcompanies. D.Byteachingpeopletofocusontheenvironment. 2Whatdoestheunderlinedwordoverrideinparagraph1mean A.Explain. B.Prove. C.Reject. D.Tolerate. 3WhatisthekeytothethirdsuccessaccordingtoDel.BrookeLierman A.Learningfromothercities. B.Gettingmedium'ssupport. C.Changingpublicopinion. D.Hurtingsmallbusinesses. 4Whatcanwelearnfromthetext A.Foamfoodpackageswilldisappearintheworld. B.PeopleinMarylandsupportthelawabsolutely. C.Foamfoodpackageshaven'tanyadvantageatall. D.MeatwillbeallowedtobesoldinfoamfoodpackagesinAmerica.
已知5x-1的平方根是±34x+2y+1的立方根是1求4x-2y的平方根.
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25分假如你是一名高二的学生名叫李华.请你就本校食堂存在的问题向校长写一封投诉信.内容包括: 1.投诉的原因; 2.投诉的具体问题2﹣3点; 3.提出合理的建议. 注意:1.词数100左右;开头和结尾已经给出不计入字数; 2.可以适当增加细节以使行文连贯. DearHeadmaster I'mLiHuaaSenior2student. SincerelyYours LiHua
30分OnemonthagoSarahboughtalipstick口红shehaddesired.It'snot1butitmadeherhappybecauseitwastheonethatshehadbeen2sinceshesawit.Everymorningwhenshe3hermakeupeverythingseemsbrandnewduetothislipstick.Itfeelslikethatthewholedayisfullof4.Sarahhaslongbeenaccustomedto5herselfthroughshopping.Andthisdesireformaterialpossession6hertoworkhard.Shefeels7aboutthis.Her8keepsgettingbetterallbecauseofthiskindofdesire.Buthermotherthinksquite9.Severaldaysagowhenhermothercametoknowthe10ofthelipsticktheykept11foralmostawholeday.Hermotherthoughtthatitwas12wrongtospendsomuchonsuchmeaninglessitemswhileSarahthoughthermotherwastotally13aboutit.WhatSarahdidn'tknowwasthathermotherhadoncebeenalittlegirlwhohad14inpovertyandstarvation.Thatlittlegirlcouldnotfindenoughclothesto15inwinter.Thatgirlneededtolearnhowtospendeverypenny16itweretwoinordertosurvive.It'sjust17thattwopeoplecan'tunderstandeachotherevenformotheranddaughterbecauseeverybody's18isdifferent.Trytobepatientwiththepeoplearoundyou.Trytogetto19them.Trytostandintheirshoes.Ifyoucannotlistentopeoplehowcanyou20themtolistentoyou1A.dear B.cheap C.famous D.handy2A.longingfor B.headingfor C.leavingfor D.payingfor3A.putsoff B.putsaway C.putson D.putsback4A.anxiety B.hate C.laughter D.hope5A.rewarding B.devoting C.adapting D.forgiving6A.warns B.persuades C.begs D.drives7A.cautious B.good C.stressed D.negative8A.career B.relationship C.life D.study9A.firmly B.differently C.logically D.obviously10A.quality B.brand C.material D.price11A.waiting B.quarreling C.shopping D.gossiping12A.probably B.approximately C.slightly D.completely13A.unreasonable B.uncomfortable C.enthusiastic D.curious14A.turnedup B.brokenup C.grownup D.keptup15A.wear B.sell C.exchange D.clean16A.eventhough B.incase C.asif D.sothat17A.unlikely B.necessary C.strange D.natural18A.experience B.knowledge C.character D.family19A.move B.forgive C.know D.copy20A.force B.expect C.order D.advise
10分Itisimportanttoteachyourdogtoguardyouandtheothermembersofyourfamilytofightagainstdanger.Herearesometipsonhowtotrainyourdogtoprotectyou. 1. Itisveryimportanttointroduceyourdogtootherpeopleandletitinteractwiththem.Agoodguarddogisfriendlytothepeoplearoundit.Thisexerciseisveryimportantbecauseitwillhelpthedogdistinguishbetweengoodpeopleandbadpeople.2. Usepropercommands Adogactsaccordingtohowithasbeentrained.Theonlywaytodothisisthroughcom﹣mandsandyourownbodyactionsandsounds.CommandthedogtoattackbysayingthewordAttackloudly.SoonwheneveryouusethecommandAttack!yourdogwillunderstandthatitneedstofightthethingyouarepointingat.3youmustalsotrainittostoptheattack. Teachnightguarding Teachyourdogtokeepacheckonthehousebytakingitaroundthehouseandmakingitsniffthearea.Youwillneedtodothisacoupleoftimessothatthedogunderstandsthatitneedstokeepacheckeverynight.4.Itwillcheckthehouseandreturnbackindoors. Rewarditforitsgoodbehavior GivingrewardssuchasapatahugverbalpraiseGooddog!ortreatsisanexcellentwayoflettingthedogknowthatyouarehappywithitsbehavior.5itisyourdutytomakesureyourdogisrewardedforitsgoodbehaviorandpunishedforitsbadbehavior.PunishmentinvolvesscoldingthedogbyusingthecommandBaddog!orNoverybad!Thiswillhelpthedoglearnthatitmustn'tdocertainthings. A.Sinceyouarethemaster B.Encouragecommunication C.Whileyouaretrainingthedogtoattack D.Trainanolderdogtoprotectitsmaster E.Afterafewdaysthedogwillbegintocheckonitsown F.Peoplewhoaregoodwillbethosewhoareallowedtocomeclosetoit G.Ifyourdogdoesnotcomeinsideyouwillneedtocommandittogetback
10分假定英语课上老师要求同桌之间交换修改作文请你修改你同桌写的以下作文.文中共有10处语言错误每句中最多有两处.每处错误仅涉及一个单词的增加删除或修改. 增加:在缺词处加一个漏字符号∧并在其下面写出该加的词. 删除:把多余的词用斜线\划掉. 修改:在错的词下划一横线并在该词下面写出修改后的词. 注意: 1.每处错误及其修改均仅限一词; 2.只允许修改10处多者从第11处起不计分. I'vehadmanydreamssinceIwasachild.Nowmydreamistoopensacafe.Thoughitmayappearsimpleitrequiredalotofideasandefforts.WhatIwantisnotjustanordinarilycafebutaveryspecialone.IwantmycafehaveaspecialthemesuchaslikeTangDynasty.Inthecafecustomerswillenjoyyourselvesinthehistoricalenvironmentwhatiscreatedforthem.IfIsucceedinmanageoneIwillopenmore.Iwishtohaveachainofcafesinmanydifferentcity.Eachofmycafeswillhaveadifferentthemeandanuniquestyle.
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