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.因式分解3x2+6xy+3y2
完成下列因式分解分解要彻底哦3x2﹣12xy2
因式分解:-x4y5+x2y2-xy=-xyx3y4-xy
因式分解xy2﹣4x=.
因式分解3x3-12xy2
因式分解x3y-xy3=
因式分解x3y﹣xy=
因式分解x3﹣xy2=.
因式分解x3-xy2.
因式分解5x3y﹣20xy3
因式分解x2﹣4xy+4y2=.
因式分解x2﹣2xy+y2=
因式分解x+y2﹣4xy
因式分解﹣2x2y+12xy﹣18y=
.因式分解3x3-12xy2
因式分解x3y-xy=.
因式分解x﹣2y2+8xy.
因式分解x2y﹣2xy2=
因式分解5x3y﹣20xy3
因式分解2x3y-8xy
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Three﹣quartersoftheworld'scoffeefannsdestroyforesthabitattogrowcoffeeinthesunandtypicallyuseharmfulpesticides[杀虫剂andchemicalsthatpoisontheenvironment.Whenforestsdisappearmigratory迁徙的songbirdsdisappeartoo.InordertodealwithseverepopulationandhabitatlossSmithsonianscientistscreatedtheBirdFriendlycertification・ BirdFriendlycoffeesareshade﹣grownmeaningthecoffeeisplantedundertreesratherthanonthelandthathasbeenclearedofallotherplants.Coffeeexpertssayshade﹣growncoffeestastebetterbecausethebeansripenslowerthancoffeegrowninthefullsunresultinginarichermorecomplexflavor.BirdFriendlycertifiedcoffeesgrowunderbio﹣diverseshadethatprovideshabitatformigratorysongbirdsandotherwildlifestorescarbonandfightsclimatechange.BirdFriendlycoffeesarealsocertifiedorganicmeaningtheyaregrownwithoutpesticideswhichisbetterforpeopleandfortheplanet. BirdFriendlyproducerscanalsoearnmorefortheircrops.Thewoodandfruittreesonshadecoffeefarmsprovidefannerswithadditionalincome.EverycupofBirdFriendlycoffeepurchasedrewardsthesefarmerswithalittlemoremoneyforbeinggoodstewardsoflheenvironmentandencouragesthemtocontinueconservingBirdFriendlyhabitat. BuyingBiniFriendlysupportstheSmithsonianMigratoryBirdCenter'sconservationresearchaimedalunderstandingandprotectingyourfeatheredfriends.YoucanpurchaseBirdFriendlycertifiedcoffeesuroundtheworldandprotectwildlifeandhabitatwitheverycup.Findastoreorcafenearyouorbetteryethaveitshippedtoyourdoorwhenyouorderonline. 1Whatisthepresentsituationofcoffeefarms? A.Onefourthofthemhavedestroyedforesthabitatforbirds. B.Pesticidesandchemicalsusedonthempoisonedmanybirds. C.Fannershavebeenawareofenvironmentprotection. D.Scientistspayattentiontothemandhavecomeupwithanidea. 2Whit'sacharacteristicofBirdFriendlycoffees? A.Theymayhaveabettertaste. B.Theyhaveastrangeflavor. C.Theytakelesstimetoripen. D.Theyaregrownonunpollutedland. 3HowcanBirdFriendlyfannersearnmoremoney? A.Bychargingconsumersmoremoney. B.Bysellingfruitsandwoodfromtrees. C.Bycuttingdowntreesandsellingwood. D.Byservingasstewardsofcoffeeconsumers. 4Whatdocsthetextsuggestcoffeeconsumersdo? A.Consumelesscoffee. B.Ordercoffeeonline. C.Purchaseshade﹣growncoffee. D.Donatetocoffeefarmers.
Fromsmoothconferencecallsina1crowdtrainstationtolivebroadcastsoftownhallmeetingsandlightning﹣quickdownloadsofhigh﹣resolution高清晰的2movieShanghai'ssuperfast5Gnetworkisturningtechnologicaldreamsintoreality. Inthelatest3develop.thecity'sHongqiaoRailwayStationoneofAsia's4bigtrafficcentershaslauncheda5Gnetwork.Itwillallowpassengerstoexperiencedataspeedsupto100timesfasterthan5isavailablenow.Therailwaystation's5GnetworktheresultofteamingupwithtelecommunicationequipmentmakerHuaweiTechnologies6seeasamilestoneinShanghai'scommercial5Garrangementtobecomeadual﹣gigabandcitywithgigabit千兆宽带networkspeedsonmobileaswellasfixednetworks. Asthe5Gera7approachoneofthekeyconcernsfortelecomoperatorswillbehowtheycanuse5Gnetworkstomeettheneedsofhigh﹣densityareaswiththousandsofpeoplesimultaneously同时using8networktomakephonecallsaccesstheinternetandmakemobilepayments. ChinaMobile'sShanghaibranchtappedHuawei's5GDigitalIndoorSystem9iscurrentlytheindustry'sonly10commercialavailablesystemfor5Gindoorcoverage.TheproductdevelopedinShanghaiisnowreadyformassdelivery.
用图1所示的实验装置研究小车速度随时间变化的规律. 主要实步骤如下 a.安装好实验器材接通电源后让拖着纸带的小车沿长木板运动重复几次. b.选出一条点迹清晰的纸带接一个合适的点当作计时起点Ot=0然后每隔相同的时间间隔T选取一个计数点如图2中ABCDEF……所示. c.通过测量计算可以得到在打ABCDE……点时小车的速度分别记作v1v2v3v4v5…… d.以速度v为纵轴时间t为横轴建立直角坐标系在坐标纸上描点如图3所示. 结合上述实验步骤请你完成下列任务 1在下列仪器和器材中还需要使用的有和填选项前的字母 A.电压合适的50Hz交流电源 B.电压可调的直流电源 C.刻度尺 D.秒表 E.天平含砝码 2在图3中已标出计数点ABDE对应的坐标点请在该图中标出计数点C对应的坐标点并画出v﹣t图象. 3观察v﹣t图象可以判断小车做匀变速直线运动其依据是.v﹣t图象斜率的物理意义是. 4描绘v﹣t图象前还不知道小车是否做匀变速直线运动.用平均速度表示各计数点的瞬时速度从理论上讲对△t的要求是选填“越小越好”或“与大小无关”从实验的角度看选取的△x大小与速度测量的误差选填“有关”或“无关”. 5早在16世纪末伽利略就猜想落体运动的速度应该是均匀变化的.当时只能靠滴水计时为此他设计了如图4所示的“斜面实验”反复做了上百次验证了他的猜想.请你结合匀变速直线运动的知识分析说明如何利用伽利略“斜面实验”检验小球的速度是随时间均匀变化的.
儿童可以从下列食物中获得人体所需要的钙的是
如图所示材料相同的物体mlm2由轻绳连接在恒定拉力F的作用下沿斜面向上加速运动.轻绳拉力的大小
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ab两种物质的溶解度曲线如图所示下列说法不正确的是
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下列五幅图分别对应五种说法其中正确的是
假定你是学校英语报的兼职编辑李华.最近该报开设了YourFeelings专栏column.请用英语写一篇短文介绍开设该专栏的目的交流情感专栏内容有关心理健康的文章及解答心理问题并号召同学们投稿. 注意 1.词数100左右 2.可适当增加细节以使行文连贯.
一列简谐横波沿x轴正方向传播在t=0和t=0.20s时的波形分别如图中实线和虚线所示.已知该波的周期T>0.20s.下列说法正确的是
Imagineafuturewhereallfarmingisdonebymachineandhumansneversetfootinthefields.InShropshireintheUKengineersintheHandsFreeHectareprojectaredevelopingautomatedtractorsanddronestogrowandharvestcrops.Andtheirexperimentisnotaloneagriculturalroboticsisaboomingsector行业. Onereasonwhythesectorisontheupisthatglobaldemandforfoodisrapidlyincreasing.TheWorldBankestimateswewillneedtoproduce50%morefoodby2050iftheplanet'spopulationcontinuestogrowatitscurrentspeed.Addtothistotheforecastthatyields产量willdecreasebyoveraquarterduetoclimatechangeandthesituationlooksserious.Couldfuturisticfarmingprovidetheanswer? OnecompanyinJapanbelievesso.ThefirmSpreadhasdispensedwithfarmingonlandaltogetherandinsteadgrowsvegetablesonstacksoftraysindoorsinanautomatedfactory.IncountrieslikeJapanwherelandisactuallyaveryscarceresourceitmakesmoresensetostackyourproductionjustlikeaskyscrapersaysJJPriceSpread'sglobalmarketmanager.Mr.PricetoldtheBBCthatthismethodofvertical垂直的farmingnotonlyreducescostsby50%butitisalsogreener.LEDlightscutenergybillsbyathirdand98%ofwatercanberecycled.Bygrowingcropsclosetowherepeopleconsumethemtransportcostsandemissionsarealsominimisedhesays. Andwherewillwebuythisfuturisticfood?Perhapsinshopswithnostaff?AmazonhasrecentlylauncheditsfirstAmazonGostoreintheUSwhichhasnocheckouts.Customerssimplypicktheiritemsfromtheshelvesandtechnologydoestherest. Allthisbegsthequestionifeverythingisautomatedwhatjobswillpeopledo?Themechanisationoffarmingmeansfewerandfewerpeopleworktheland.From1950to2010agriculturallabourershavedecreasedfrom81%to48.2%oftheworkforceindevelopingcountriesandfrom35%to4.2%indevelopedcountries.It'satrendthatlookssettocontinue. 1Whydopeopledevelopagriculturalrobotics? A.Tochangetheclimate. B.Toliberatetheworkforce. C.Tocontrolthepopulationgrowth. D.Tomeettheincreasingdemandforfood. 2Whichofthefollowingisclosestinmeaningtotheunderlinedwordsinparagraph3? A.changed B.developed C.doneawaywith D.takenup 3WhydoesMr.PricethinkverticalfarmingmakesparticularsenseinJapan? A.Workforceistoolimited. B.Transportcostmaydecrease. C.Thereissolittlelandavailableforfarming. D.Thetechnologyhasreachedahighlevel. 4Whatcanbethebesttitleforthetext? A.Farmingtechnology B.Thefutureoffoodproduction C.Employmenttrend D.Futureshopswithnostaff
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关于能量和能源的利用下列说法正确的是
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假如你是校学生会__李华暑期拟组织部分学生去英国进行为期一周的研学游travelstudy活动已起草了活动方案.给你的英国网友Mr.Smith写信征求他对方案的意见及建议并询问相关注意事项. 注意1.词数100左右 2.可以适当增加细节以使行文连贯.
质量均为m=lkg的甲乙两个物体同时从同地沿同一方向做直线运动二者的动能随位移的变化图象如图所示.下列说法正确的是
如图所示电源电动势为E内阴为r.电路中的R1为光敏电阻其阻值光照强度增大而减小R2为定值电阻.当开关S闭合时下列说法正确的是
InastudyrecentlypublishedinthejournalNeuronresearchersfoundthatsupermemorizersdonthaveunusuallylargebrainregionsthatallowthemtorememberalotofinformation.1Hereareafewoftheirfavoritetricksthatcanhelpyoutorememberthingsinyoureverydaylife. ToRememberNewwords TechniqueChangeroutine Inastudyagroupofstudentsstudiedalistofwordsintwoseparatesessions.Somestudiedinamessyroomandsomeinaneatspace.Onegroupofstudentsspentbothsessionsinthesameroomwhiletheothersplitthesessionsbetweenthetwoenvironments.Duringatestthestudentswhostudiedinmultipleplacesrememberedmuchmore.2Thatincludesthetimeofdaythemusicinthebackgroundwhetheryousitorstandetc. ToRememberYourPIN TechniqueCountitout Youcoulduseyourbirthdayoryourphonenumberbutidentitythieveshaveawayoffiguringthosenumbersout.3Writeafour—wordsentencethencountthenumberoflettersineachword.ForinstanceThisismyPIN=4223. ToRememberFaces TechniqueFocusonnoses Whilesomesupermemorizersspecializeinassociatingnameswithfacesthememory—palacetechniquedoesn'tworkaswelliftheimageofthefaceischangedinanyway.Ratherthanfocusingoneyesasmostpeopledofocusonthecentreortotheleftofapersonsnose.4 ToRememberFacts&figures Technique5 Tolearnandrememberstatisticsreviewingthematerialrepeatedlyoveralongertimeisfarmoreeffectivethanrepeatingitinashorterone.Ifyourexamisinaweekstudytodayandthenagaininadayortwo.Ifitsamonthawaystudytodayandthenwaitaweekbeforeyoursecondsession. A.Valueexams. B.Giveyourselftime. C.Thisallowsyoutotakeintheirwholeface. D.Theirbrainstructuresareinfactthesameastherestofours. E.InsteadtrythistipfromDominicaneight—timeWorldMemoryChampion. F.Thetheoryisthatyourbrainlinksthewordstotheenvironmentaroundyou. G.Studiesshowedthatvaryingotheraspectsofyourenvironmentcanalsohelp.
QianZhongshuwasaChinesescholarandwriterknownforhiswitanderudition博学.DespitefailinginmathematicsQian1successenteredtheDepartmentofForeignLanguagesunderTsinghuaUniversityin1929becauseofhis2excellenceperformanceinChineseandEnglishlanguages.InTsinghuahemethiswifeYangJiangwhowastobecomeasuccessfulplaywrightandtranslatorand3marryherin1935.InthesameyearQianreceivedgovernmentsponsorship4promotehisstudiesabroad.TogetherwithhiswifeQianheadedfortheUniversityofOxfordinBritain.After5spendtwoyearsatExeterCollegehereceivedabachelorofliterature.HestudiedforonemoreyearintheUniversityofParisinFranceandhedidn'treturntoChina61938. QianlivedinShanghaifrom1941to19457wasthenunderJapaneseoccupation.Atthattimehedevoted8hetowritingandmanyofhisworkswerewrittenorpublishedthen.Acollectionofshort9essayWritingintheMarginsofLifewaspublishedin1941.HismostcelebratedworkFortressBesiegedappearedin1947.OntheArtofPoetrywritten10classicalChinesewasissuedin1948.
下列图所示的“错误操作”与相对应选项的“可能产生后果”不一致的是
下列推论正确的是
Chinesehigh—speedrailwayareavery1comfortwaytotravel.Theyarecleanquietandefficient.Chinahasledotherdevelopingcountriesandevensomedevelopedonesinthisfieldsincethefirsthigh—speedtrain2comeintousein2008. Thestationsare3mainbuiltoutsidethetowncentrebutlocaltransporthasbeenlengthened4connectthehigh—speednetwork.Thefacilitiesonthetrainarenewandthestaffarewelltrained.Eventhesecondclass5chairprovideplentyofspace.Thepassengersaresowide6youcanmovewithoutdisturbinganyone.Youcanuseyourmobilephoneaccess7Internetorworkonyourlaptop.Thereisalsoarestaurantcarthoughthekindsoffood8belimited.Thetoiletsarelargecleananduser—friendlytoo.Thetrainalmostdoesntrock.Evenwhenthetrainbrakesyoucanhardlyfeelitshake. What'smorewithafastercheck—inthehigh—speedtrainsarealso9littleaffectedbyweatherthanplanes.Seldomare10delayedorcancelledforweathercondition.Thereforetheyhavebecomethefirstchoiceformanypassengers.
Knowingwhattodoatcheckoutandproperlypreparingforitcanturnapotentiallyheatedsituationintoaquickthankyouaddgoodbye.Belowwemadealistoffivethingsyoushouldrememberathotelcheckout. Don'tbelatetocheck Hotelsmayaddanextremelyhighpriceforbeingjustahalfhourlate.Ifyouknowyouwon'tmakethecutofftimeitneverhurtstocallaheadandtrytonegotiateawayapotentialcharge. Don'tforgettodoublecheektheroomandsafe Makesureyoudon'tleavethingsbehind.Ifyouhaveanearlyflightorcheckouttimepackupasmuchasyoucanthenightbeforesothatlast—minuterushisn'ttooannoying.Alsobesuretotakeoutanythingintheroomsafe. Don'tforgettotipthehousekeepers It'salwayspolitetoleavesomemoneyforthepeoplekeepingyourroomclean. Don'tignorethedetailedbill Youmaybeinarushbutgivethedetailedhillacarefullooktoseeifthehotelchargeisdifferentfromtherateyouinitiallybooked. Don'tgetangry Shootingattheassistantmanagerstandingbehindthefrontdeskprobablywon'thelp. Whendealingwithanunexpecteditemonthebill.Thinkabouthowdifficultitcanbetodealwithannoyedcustomers.Keepcalmandthingsmaybesolvedbetterandsooner. 1Thehotelwillchargeyoumoremoneyifyou. A.checkbeforecutofftime B.donotcallthehotelahead C.arelateincheckingout D.negotiatewiththeclerks 2Whichofthefollowingdoestheauthorsuggestdoing? A.Leavingsomethingbehind. B.Beingsuretokeeptheroomclean. C.Doingthepack—upasearlyaspossible. D.Tippingthehousekeeperstoshitrespect. 3Whatisthepurposeofthelastparagraphofthepassage? A.Tosuggestawaytosolveproblemsproperly B.Toprovidemoreinformationaboutthehotel. C.Toshowtheuneasinessofassistantmanagers D.Toprotectcustomersfromunnecessarydangers. 4Inwhichsectionofthemagazinecanyouprobablyfindsuchapassage? A.Fitness. B.Nature. C.Lifestyle. D.Travel.
Itisgenerallyacknowledgedthatyoungpeoplefrompoorersocio—economicbackgroundstendtodolesswellintheeducationsystem.InanattempttohelpthechildrenofpoorfamiliesanationwideprogramcalledHeadstartwasstartedintheUSin1965.Alotofmoneywaspouredintoit.Ittookchildrenintopre—schoolinstitutionsattheageofthreeandwassupposedtohelpthemsucceedinschool.Buttheresultshavebeendisappointingbecausetheprogrambegantoolate.Manychildrenwhoentereditatthreewerealreadybehindtheirpeersinlanguageandintelligenceandtheparentswerenotinvolvedintheprocess.AttheendofeachdayHeadstartchildrenreturnedtothesamedisadvantagedhomeenvironment. ToimprovetheresultsanotherprogramwasstartedinMissourithatconcentratedonparentsasthechild'sfirstteachers.Thisprogramwasbasedonresearchshowingthatworkingwiththefamilyisthemosteffectivewayofhelpingchildrengetthebestpossiblestartinlife.Thefour—yearstudyincluded380familieswhowereabouttohavetheirfirstchildandrepresenteddifferentsocial—economicstatusageandfamilystructure.Theprograminvolvedtrainededucatorsvisitingandworkingwiththeparentorparentsandthechild.Theprogramalsogavetheparentssomeguidanceandusefulskillsonchilddevelopment. AtthreethechildreninvolvedintheMissouriprogramwereevaluatedwiththechildrenselectedfromthesamesocio—economicbackgroundandfamilysituations.Theresultswereobvious.Thechildrenintheprogramweremoreadvancedinlanguagedevelopmentproblemsolvingandotherintellectualskillsthantheirpeers.Theyperformedequallywellregardlessofsocio—economicbackgroundsorfamilystructure.Theonefactorthatwasfoundtoaffectthechild'sdevelopmentwasthepoorqualityofparent—childinteraction.Thatinteractionwasnotnecessarilybadinpoorerfamilies. TheMissouriprogramcomparesquitedistinctlywiththeHeadstartprogram.Withoutasimilarfocusonparenteducationandonthevitalimportanceofthefirstthreeyearssomeevidenceindicatesthatitwillnotbeenoughtoovercomeeducationalunfairness. 1WhatcausedthefailureoftheHeadstartprogram? A.Thelargenumberofpoorfamilies. B.Thedisapprovalfromchildren. C.Thelatestartoftheprogram. D.Thelongperiodoftime. 2WhatdoweknowabouttheMissouriprogram? A.Itfocusedonthechildren'sfirstschoolteachers. B.Ithelpedthechildrenreturntothesamehome. C.Itmadethechildrenimprovedinmanyaspects. D.Itgavetheparentsadviceontheirdevelopment. 3Accordingtothepassagewhatislikelytoinfluencechildren'sperformance? A.Thenumberoffamilymembers. B.Theparent—childcommunication. C.Theintelligenceoftheirparents. D.Theteacher—studentrelationship. 4Howdoestheauthordevelopthepassage? A.Bylistingfigures. B.Bymakingcomparisons. C.Bygivingexamples. D.Bydrawingconclusions.
质量m=1.0kg的物块A可视为支点轻弹簧的上端连接弹簧下端固定在光滑斜面底端斜面的倾斜角θ=30°.平衡时弹簧的压缩量为x=0.20m此时具有的弹性势能Ep=0.50J物块A处在O时弹簧为原长如图所示.一质量m=1.0kg物块B可视为质点从距离物块A为d=2.0m处从静止开始沿斜面下滑与物体A发生碰撞后立刻一起向下运动但不粘连它们到达最低点后又向上运动.g=10m/s2求 1物块B与物体A碰撞后的速度 2物块B向上运动到达的最高点与O的距离s.
Ahumpbackwhaleisstrugglinghardinthesea.Thehumpbackscanweigh40tonsandstretch50feelfromnosetotail.That'sthekindof1andsizethateasilyoverturnsmallboats.Tojumpontothe2ofoneofthesegiantsis3toresultinadisaster.Butthat'sjustwhatSamSynsleliendidwhenhesawahumpback4caughtinaropethatwas5toabuoy浮标inCentralCaliforniansMorroBaythisweek. SamalongwithcrewmateNicholasTaronhadalreadytried6theunfortunatewhaletotheU.S.CoastGuard一buttheyweretolditwouldbehoursbefore7couldbesent.8thecommercialfishermen9thiswhaledidn'thave.Ifthewhalewasto10theyhadtogogetit.Therewasnoother11forthewhale.Theydecidedtogoforittotally12thefear.Turon's13intherescuewasmostlyinthe14cheeringdepartment.Intheclipyoucanhearhimdirectingtheoperationfromthesideoftheboatwhilefilmingtheentire15. Swim!Swim!HeyellsMove!Justgetit!Getit! Theanxiouswhalewasjustswimmingincounter﹣clockwisecircles16andbeingheldtothebottom.Itthrewitsheavytailagainsttheboat.ButSam17itandjumpedontothewhale'sbacktosaveitslife.Hemanagedtohanginthere18cuttingthroughtheropethat19thecreature.Andthenwithawhoosh击水声itdovedeepdownbeneaththegreat20.Itwasn'tmuchofathankyoubutSynstelienandTaronwereleftwithawhaleofatale. 1A.length B.violence C.ability D.weight 2A.nose B.head C.back D.tail 3A.willing B.likely C.anxious D.flexible 4A.hopelessly B.loosely C.curiously D.secretly 5A.stuck B.directed C.adjusted D.attached 6A.shipping B.delivering C.reporting D.hunting 7A.boats B.rescuers C.fishermen D.experts 8A.Strength B.Advantages C.Patience D.Hours 9A.figured B.objected C.hesitated D.proved 10A.paddle B.survive C.relax D.breathe 11A.barrier B.accommodation C.option D.equipment 12A.hiding B.exhibiting C.fostering D.ignoring 13A.interest B.ambition C.role D.contribution 14A.disturbing B.enthusiastic C.clumsy D.scared 15A.operation B.creature C.performance D.fighting 16A.silent B.stressed C.confused D.unconscious 17A.wrestled B.spotted C.trained D.approached 18A.eventually B.naturally C.directly D.normally 19A.prohibited B.injured C.tied D.monitored 20A.waves B.noises C.ferry D.darkness
Unitthe1980sscientistsweretrainedtoignoreanimalpainaccordingtothebeliefthattheabilitytofeelpainwasassociatedonlywithhigherconsciousness.Howevertodayscientistsviewhumansasaspeciesofanimalsandlargelyacceptthatmanyspeciesarecapableofsomelevelofself﹣awareness.1 Ifyouhitanotherpersoninthefaceyoucanestimatetheirpainlevelbywhattheydoorsayinresponse.2Graduallyscientistshavedevelopedasetofindicatorsofpainresponseinnon﹣humananimals.Demonstratingaresponsetoanegativestimulationanddisplayingprotectivebehaviorofinjuredareasaretwomajorsigns. 3Someresearchersarguelobsters龙虾aretoodissimilartovertebrates脊椎动物tofeelpain.Nonethelesslobstersdosatisfyallofthestandardsforapainresponse.Lobstersguardtheirinjuriesandlearntoavoiddangeroussituations.Theyareevenbelievedtopossesssomelevelofconsciousness.Inresulttodaymostscientistsagreethatinjuringalobstercausesphysicalpain. Duetogrowingevidencethatthelobstersmayfeelpainitisnowillegaltoboillobstersaliveorkeepthemoniceinsomecountries.Eveninlocationswhereboilinglobstersremainslegalmanyrestaurantsprefermorehumanemethods.4Tosatisfypickydinersmorerestaurantsruleoutthecruelcookingmethods. CurrentlythemosthumanetoolforcookingalobsteristheCrustaStun.Thisdeviceelectrocutes电击alobster.5Thefollowingprocessofcookingissuretocausenopain.Incontrastittakesabout2minutesforalobstertodiefromboilingwaterduringwhichtimepainlasts. A.Buthugedisagreementexists. B.Thecreatureinstantlylosesconsciousnessinhalfasecond. C.Itbeatstheformermethodbysavingchefs'effortincleaningthecreature. D.It'sdifficulttoassesspaininotherspeciesbecausewecannotcommunicateaseasily. E.Peoplearecomingtorealizethatotherspeciesmightalsoenjoytheluxuryofemotion. F.Exceptformoralconsiderationmanychefsbelievestressnegativelyaffectstheflavor味道ofthemeat. G.Legalprohibitionbecomesthemajorconsiderationforrestaurantswhenchoosingacookingmethod.
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