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已知抛物线x2=4y焦点为F，经过F的直线交抛物线与A（x1，y1），B（x2，y2），点A、B在抛物线准线上的投影分别为A1，B1，以下四个结论：①x1x2=﹣4，②|AB|=y1+y2+1，③，...
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高三下学期数学《》真题及答案
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已知抛物线y2=2pxp＞0过其焦点且斜率为1的直线交抛物线于AB两点若线段AB的中点的纵坐标为2则
x=1
x=-1
x=2
x=-2
过抛物线y2＝4x的焦点F.的直线交该抛物线于A.B.两点.若|AF|＝3则|BF|＝_______
已知抛物线ωy2=axa＞0上一点P.t2到焦点F.的距离为2tⅠ求抛物线ω的方程Ⅱ如图已知点D.的
过抛物线y2=4x的焦点F的直线交该抛物线于AB两点若|AF|=3则|BF|=.
已知抛物线C.的顶点为O.00焦点为F.01.1求抛物线C.的方程2过点F.作直线交抛物线C.于A.
设抛物线的顶点在坐标原点焦点F.在y轴正半轴上过点F.的直线交抛物线于A.B.两点线段AB的长是8A
已知过抛物线y2＝4x的焦点F.的直线交该抛物线于A.B.两点|AF|＝2则|BF|＝______.
已知F.为抛物线C.y2=4x焦点其准线交x轴于点M.点Ｎ是抛物线C上一点I.如图①若MN的中垂线恰
已知抛物线y2=8x的焦点为F.直线y=kx+2与抛物线交于
，
两点，则直线FA与直线FB的斜率之和为 A.0B.2
－4
4
设抛物线x2=2pyp>0的焦点为F.经过点F.的直线交抛物线于A.B.两点点C.在抛物线的准线上且
已知A.是抛物线y2=4x上一点F.是抛物线的焦点直线FA交抛物线的准线于点B.点B.在x轴上方若|
过抛物线y2=4x的焦点F.的直线交该抛物线于A.B两点.若|AF|=3则|BF|=.
已知过抛物线y2=4x的焦点F.的直线交该抛物线于A.B.两点|AF|=2则|BF|=.
已知抛物线y2=2pxp＞0的焦点F.位于直线x+y﹣1=0上.Ⅰ求抛物线方程Ⅱ过抛物线的焦点F.作
设抛物线y2=2pxp＞0的焦点为F.经过点F.的直线交抛物线于A.B.两点点C.在抛物线的准线上且
过抛物线Cy2=2pxp＞0的焦点F的直线交抛物线于AB两点且AB两点的纵坐标之积为﹣4.1求抛物线
过抛物线C.y2＝4x的焦点F.作直线l交抛物线C.于A.B.两点若A.到抛物线的准线的距离为4则|
已知抛物线C.:x2=2pyp>0的焦点为F抛物线上一点A.的横坐标为x1x1>0过点A.作抛物线C
已知抛物线y2=2pxp>0过其焦点且斜率为1的直线交抛物线于
B.两点,若线段AB的中点的纵坐标为2,则该抛物线的准线方程为( ) A.x=1
x=-1
x=2
x=-2
已知直线l与抛物线y2＝8x交于A.B.两点且l经过抛物线的焦点F.A.点的坐标为88则线段AB的中
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DirectionsReadthefollowingpassage.Summarizethemainideaandthemainpointsofthepassageinnomorethan60words.Useyourownwordsasfaraspossible. Smallbusinessesholdthekeytoemployedhappiness.Asthecalendarflipstoanotheryearmanyemployees'willconsiderstartingthenewyearonthehuntforanewjob. Intoday'schangingworkforceitismoreimportantthaneverforcompaniestorealizethatasalaryaloneisnolongerenoughtoattractorretainstrongemployees. AccordingtoasurveybyAflacsmallbusinessdeservearoundofapplausefortheirabilitytokeepemployeeshappy.Thereportfondthat85percentofsmall﹣businessemployeesarehappyintheircurrentjobandmorethanhalf51percentagreethatmostoforalloftheirhappinessintheircurrentjobisaresultofworkingforasmallbusiness. Nearlyaquarterofparticipants23percentstatedthatthefeelingofimportancewasthebestpartofworkingforasmallbusiness.Smallbusinesseshavetheuniqueabilitytomakeemployeesfeelappreciatedrespectedandvaluedonapersonalandprofessionallevel. Inasmall﹣businessenvironmenttherearetypicallyfewerlayersbetweennewcomersandleadership.Thistight﹣knitstructurecancreateafamily﹣likeatmospherethatallowsemployeestofeelthattheiropinionsmatterandthattheyplayasignificantroleinthebusiness'smission. Flexibilityisalsovitalincreatingemployeehappiness.Accordingtothereport30percentofrespondentsnotedthatflexibleschedulingwasthebestpartofworkingforasmallbusiness.Aworkplacethatpromoteshealthywork﹣lifebalancecancreatehappierlessstressedemployeesandcanalsoincreaseproductivity. Althoughsmallbusinessexcelatkeepingemployeeshappythereisalwaysroomforimprovement.Inasmall﹣businesscommunitymoneydoesnotseemtobetheonlymotivator.Infact65percentofsmall﹣businessemployeesindicatethatanimprovementintheirbenefitsofferingswouldmakethemhappier. Byofferingagreatbenefitsplanthanincludesvoluntarybenefitssmallbusinesscanensurethattheiremployeesareabletofindtherightbenefitstomeettheirindividualneeds.
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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处错误每句中最多有两处.错误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. DearSir/Madam I'mwritinginresponsetoyouradvertisementintheBingleyTimesinMarch2nd.I'mveryinterestinginjoiningyourDanceclassesandwouldbegratefulunlessyoucouldanswerafewquestionsIhave. Youradvertisementstatesthatanumberintheclasseswaskepttoaminimum.Howmuchpeoplearethereineachclass?AsIworkeverydayuntil5o'clockIwouldalsoliketoknowthetimesoftheclasses.InadditionI'dliketoknowifIneedanyspecialshoesfortheclassesandI'dgreatlyappreciateifyoucouldtellmewheretobuyanynecessaryequipments.Finallyasit'smyintentiontoattendtotheseclassesregularlycouldyoualsosendmedetailsofpricesormembershipfees? Thankyouforyourkindattention.Pleasereplyatyourearliestconvenience. Yoursfaithfully ElaineRichards
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Litteriseverywheredoinggreatharm1theenvironmentandlifeonourplanet.JeffKirschnerwhowantstobuildalitter﹣freeworldstartedaglobalcommunitynamedLitterati2settlethisproblem. Thestorybeganwithhis6﹣year﹣olddaughter.Onedaytheyweregoingonahikewhenthegirlnoticeda3breakplastictub浴盆inariver.ShesaidDaddythatdoesn'tgothere.ThattookKirschnerbysurprise.Helikemanyadultshadbecomesousedtotherubbisharoundthemthathehadn'tgivenitasecondlook.4hisdaughtersaidremindedhimoftheseriousproblemourplanetfaces. Jeffstartedtotake5act.HecreatedLitteratianappthatmakesitfuntopickuplitter.Theideais6fairsimpleSpotapieceoftrashtakeaphotopostthephotoonlineandthenputthelitterintodustbins. 7seethatJeffwaskeepingarecordofthepositiveimpacthewashavingontheplanetpeopleworldwidestartedparticipating.Uptonowover2500000photospostedby3500peoplefromover40countries8findtheirwaytoLitterati'sdigitallandfill. Litteratiismorethananapp.Itisahighly9effectsolutiontoapressingissue.Whereveryoulivewhateveryoudoand10youarejoinLitteratitomaketheworldacleanerandhealthierplacetolivein.
HotAirBalloons Thebasisofhowtheballoonworksisthatwarmerairrisesincoolerair.Thisisbecausehotairislighterthancoolairasithaslessmassperunitofvolume.Masscanbedefinedbythemeasureofhowmuchmattersomethingcontains.Theactualballoonhastobelargeasittakesalargeamountofheatedairtoliftitofftheground. Theburnerusespropanegastoheatuptheairintheenvelopetomovetheballoonoffthegroundandintotheair.Thepilotmustkeepfiringtheburneratregularintervalsthroughouttheflighttoensurethattheballooncontinuestothestable.Naturallythehotairwillnotescapefromthehotattheverybottomoftheenvelopasfirstlyhotairrisesandsecondlythefloatingpowerkeepsitmovingup. Tomovetheballoonupwardsthepilotopensupthepropanevaluewhichletsthepropaneflowtotheburnerwhichinturnfreestheflameupintotheenvelope.Itworksinmuchthesamewayasagasgrillthemoreyouopenthevalvethebiggertheflametobeattheairandthefastertheballoonrises. TheParachuteValveattheverytopoftheballooniswhatisusedtobringtheballoondowntowardstheground.Itisacircleoffabriccutoutofthetopoftheenvelopwhichiscontrolledbyaropewhichrunsdownthroughthemiddleoftheenvelopetothebasket.Ifthepilotwantstobringtheballoondownheorshesimplypullsontheropewhichwillopenthevalvelettinghotairescapedecreasingtheinnerairtemperature.Thiscoolingofaircausestheballoontoslowitsrise. Thepilotcanoperatehorizontallybychangingtheverticalpositionoftheballoonbecausethewindblowsindifferentdirectionsatdifferentaltitudes.Ifthepilotwantstomoveinaparticulardirectionheorshesimplyarisesandfallstotheappropriatelevelandrideswiththewind. 1Thepurposeofthisarticleisto. A.explainhowhotairballoonswork B.illustratewhyhotairballoonsareuseful C.describehotairballoons'structure D.informreadersabouthowhotairballoonsaremade 2WhatwouldhappeniftheParachuteValvecouldnotbereleasedafteritwasopened? A.Theinsideoftheballoonwouldcontinuetoheatup. B.Theballoonwouldclimbupmorerapidly C.Theself﹣sealingvalvewouldneedtotakeovertheroleoftheParachuteValve. D.Theballoonwouldbegintomovedownmorerapidly. 3Whichofthefollowingskillsorknowledgewouldbethemostusefultoaballoonpilot? A.Theabilitytosewthepanelsoffabrictogethertomakeaballoon. B.Anunderstandingofhowpropanegasismanufactured. C.Aknowledgeofthebackgroundofpassengerswhoaretravellingintheballoon. D.Aknowledgeofaircurrentsandwinddirectionsintheareawhereheispilotingtheballoon.
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KeepingTheTapsRunninginThirstyCities Watercovers71%ofEarth'ssurfaceyetonly2%ofitisaccessibleasasourceoffreshwater.1onthislimitedresourcesisrisingatrendlikelytocontinue. Itisimportanttorecognizethatitisnotjustcityresidentswho2water.Agricultureindustryandtourismoftenrequiremorewaterthanthemunicipalwatersupply.Globally70%offreshwateris3foragriculturebutlocallyinheavilyirrigated灌溉areasthiscanincreateto90%.Ahealthyenvironmentalsorequiresfreshwaterandthequalityofavailablewaterisasimportantasits4. Waterstressisnotalwayscausedbyphysicalshortagesindryareas.5forwaterresourcesbetweendifferentuserswithinrivercatchmentsorbasinscanalsobeacause. Everythirstycityoperateswithinitsowncontext6tothechallengeofprovidingadequatewatersupplies.CapeTown7hasfacedthreeyearsofdroughtduringwhichwinterrainsfailedtomaterialize.Attheendofthe2017rainyseasonthecityfacedthe8ofitsdamsrunningdryduring2018.Thedamswereonly37%full﹣inthesameweekfouryearsbeforetheywerefulltothetop.InJanuary2018itwas9thatCapeTownwouldreachDayZerowhenitwouldbeforcedtoturnoffthetapsinApril.Thiswasdespitethecityreducingitswaterusebymorethanhalffrom1.2billionlitresadayin2015tofewerthan600millionlitresandworking10withindustryandagriculturetoreducedemand. OnFebruary1theauthoritiesputinplaceastrictlimitof50litresofwaterperpersonperday.11inBritainthisisconsideredenoughforafive﹣minuteshowerofhalfawashingmachinecycleonfullload. Inadditionabanwasplacedonusing12waterforgardenswatermanagementdeviceswereinstalledathouseholdwithahighwateruseandthewaterpressurewasreducedtocutdemandandleaks.Atthesamethecitylaunchedamedia13tochangehabitsandintroducedhigherduties.Thisisnotwithoutitscostsagricultureandtourismbothsignificantareasofemploymenthave14.Itisaclassicexampleoftheproblemofwatereconomics﹣thecostofwaterislowbutthecostofalackofwaterisveryhigh. CrisessuchastheCapeTowndroughtareindangerofbecomingthenewnorm.The15ofDayZeromustserveasawake﹣upcallforcitiesacrosstheworldtodevelopcost﹣effectivewatermanagementstrategiestocopewithanuncertainfuture. 1A.Impact B.Pressure C.Impression D.Observation 2A.recycle B.waste C.consume D.apply 3A.restored B.abstracted C.separated D.preserved 4A.change B.source C.origin D.volume 5A.Competition B.Protection C.Construction D.Regulation 6A.contributing B.regarding C.responding D.referring 7A.inaddition B.forexample C.onthecontrary D.asaresult 8A.prospect B.illustration C.symptom D.security 9A.reported B.presented C.predicted D.explained 10A.respectively B.increasingly C.restrictively D.extensively 11A.Bycomparison B.Inotherwords C.Tooursurprise D.What'smore 12A.feasible B.drinkable C.inevitable D.influential 13A.campaign B.statement C.presentation D.advertisement 14A.invaded B.liberated C.suffered D.proceeded 15A.change B.theory C.record D.threat
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在直角坐标系xOy中以坐标原点O为极点x轴的正半轴为极轴建立极坐标系已知曲线C1的极坐标方程为ρ=2sinθ直线l的参数方程为t为参数． Ⅰ求曲线C1的参数方程和直线l的直角坐标方程 Ⅱ设D为曲线C1上在第二象限内的点且在点D处的切线与直线l平行求点D的直角坐标．
MyFavouriteBooks JoUsmarisawriterforCosmopolitanandco﹣authoroftheThisBookWillseries系列oflifestylebooks.Hereshepickshertopreads. Matilda RoaldDahl IoncewroteapaperontheinfluenceoffairytalesonRoaldDahl'swritinganditgavemeanewappreciationforhisstrangeanddelightfulworlds.Matilda'sbattleswithhercruelparentsandthebossyheadmistressMissTrunchbullareequallyfunnyandfrighteningbutthey'realsoaspirational. AfterDark HarukiMurakami It'sabouttwosisters﹣Eriamodelwhoeitherwon'torcan′tstopsleepingandMariayoungstudent.IntryingtoconnecttohersisterMaristartschangingherlifeanddiscoversaworldofdiversenightpeoplewhoarehidingsecrets. GoneGirl GillianFlynn Therewasabitofmethatdidn′twanttolovethiswheneveryoneelseontheplanetdidbutthehorrorstoryisbrilliant.There'stensionandanxietyfromthebeginningasNickandAmybattleforyourtrust.It'sarealwhodunitandthefrustrationwhenyourealisewhat'sgoingonishorriblyenjoyable. TheStand StephenKing Thisisanexcellentfantasynovelfromoneofthebeststorytellersaround.Afteraseriousfluoutbreakwipesout99.4%oftheworld′spopulationabattleunfoldsbetweengoodandevilamongthoseleft.RandallFlaggisoneofthescariestcharactersever. 1WhodoesIrefertointhetext? A.StephenKing. B.GillianFlynn. C.JoUsmar. D.RoaldDahl. 2WhichofthefollowingtellsaboutMariandEri? A.Cosmopolitan. B.Matilda. C.AfterDark. D.TheStand. 3WhatkindofbookisGoneGirl? A.Afolktale. B.Abiography. C.Alovestory. D.Ahorrorstory.
MarianBechtelsitsatWestPalmBeach'sBarLouiecounterbyherselfquietlyreadinghere﹣bookasshewaitsforhersalad.Whatisshereading?Noneofyourbusiness!LunchisBechtel'smetime.AndlikemoreAmericansshe'snotalone. Anewreportfound46percentofmealsareeatenaloneinAmerica.Morethanhalf53percenthavebreakfastaloneandnearlyhalf46percenthavelunchbythemselves.Onlyatdinnertimeareweeatingtogetheranymore74percentaccordingtostatisticsfromthereport. Iprefertogooutandbeout.Alonebuttogetheryouknow?Bechtelsaidlookingupfromherbook.BechtelwhoworksindowntownWestPalmBeachhaslunchwithcoworkerssometimesbutlikemanyofustoooftenworksthroughlunchatherdesk.Alunchtimeescapeallowshertokeepabossfromtappingherontheshoulder.Sheretunstoworkfeelingenergized.TodayIjustwantedsometimetomyselfshesaid. JusttwoseatsoverAndrewMazolenyalocalvideographerisfinishinghislunchatthebar.Helikesthathecansitandcheckhisphoneinpeaceorchatupthebarkeeperwithwhomhe'sonafirst﹣namebasisifhewantstohavealittleinteraction交流.Ireflectonhowmyday'sgoneandthinkabouttherestoftheweekhesaidIt'sachanceforself﹣reflection.Youreturntoworkrechargedandwithaplan. Thatfreedomtochooseisonereasonmorepeopleliketoeatalone.Therewasatimewhenpeoplemayhavefeltawkwardaboutaskingforatableforonebutthosedaysareover.Nowwehaveoursmartphonestokeepuscompanyatthetable.Itdoesn'tfeelasaloneasitmayhavebeforealltheadvancesintechnologysaidLaurieDemerittwhosecompanyprovidedthestatisticsforthereport. 1Whatarethestatisticsinparagraph2about? A.Foodvariety. B.Eatinghabits. C.Tablemanners. D.Restaurantservice. 2WhydoesBechtelprefertogooutforlunch? A.Tomeetwithhercoworkers. B.Tocatchupwithherwork. C.Tohavesometimeonherown. D.Tocollectdataforherreport. 3WhatdoweknowaboutMazoleny? A.Hemakesvideosforthebar. B.He'sfondofthefoodatthebar. C.Heinterviewscustomersatthebar. D.He'sfamiliarwiththebarkeeper. 4Whatisthetextmainlyabout? A.Thetrendofhavingmealsalone. B.Theimportanceofself﹣reflection. C.Thestressfromworkingovertime. D.Theadvantageofwirelesstechnology.
Thekoalaisanunusualcreature.NativetoAustraliaandabitbiggerthanarabbititspendsmostofitstimeineucalyptustrees桉树feedingonleavesthatarepoisonoustonearlyeveryotheranimalontheplanet. Thekoalasleepsabout22hoursadayandspendstheremainderofitstimeeatingandresting.Itmightspend10minutesadaymovingexpertssayusuallyfromonetreetoanother.Ithasasoftpadattheendofitsspineandextrathickfuronitsrearendtomaketheeffortofsittingmorecomfortable. ThreatsandprotectivemeasuresTheuniquelifestyleofthekoalahashelpeditprosperbuttodaythecuteandiconiccreatureisfacingthreatsfromhabitatlossdiseaseandachangingclimate. Koalapopulationsareexpectedtodeclineby50percentinthenext20yearsaccordingtotheAustralianMuseum. Tohelpprotecttheseanimalswhichbringinanestimated＄1.1billiontoAustraliaeachyearthroughkoala﹣relatedtourismaninternationalteamofresearchershaspublishedthefirstcompletegenome基因组ofthekoala. Theirhopeisthatthekeystothemarsupial's有袋动物long﹣termsurvivalmightbeplantedinitsgeneticcode. Theultimategoalisthatwewon'thaveto…rescuethemfromtheedgeofextinctionsaidRebeccaJohnsonoftheAustralianMuseumResearchInstituteinSydneywholedthework. Nowwehaveareallygoodunderstandingofthekoalagenomeandweareinafantasticpositiontousethatknowledgetohelpusmanagethem. Earlyfindings Anelementaryanalysisofthekoala'sgenomepublishedinNatureGeneticshasalreadyyieldedsomeinterestingfindings. Forexampletheauthorsfoundthatcomparedtoothermammalsthekoala'sDNAincludesanexpansioninthenumberofgenesthatencodeforenzymesinvolvedinanti﹣poison.Thatallowsthemtohaveadietthatdependsalmostentirelyoneucalyplusleaveswhichareunusuallyhighinpoison.Howeveritalsomeansthatkoalasmetabolize代谢medicineslikeanti﹣chlamydiaantibioticsfasterthanotheranimals. Thekoalagenomealsorevealedwhykoalasaresuchfamouslypickyeaters.Theyareknowntoconsumeleavesfromjust20ofAustralia's60knowneucalyplusspecies.Andevenwhentheyareinoneoftheirpreferredtreeskoalastakeleafselectionveryseriously. Informationwaitingtobediscovered Johnsonsaidthattheinformationencodedinthekoala'sDNAisalreadybeingincludedinmanagementstrategiesbyconservationgroups.Howevershesaidthefindingsdescribedinthenewpaperrepresenttheearlystagesofwhatcanbegleamedfromthemarsupial'sgenome. ThedataispublicandIwouldloveforanyonetostartminingitandseewhatotheramazingthingstheycanfindshesaid.Onceyouhaveagenomeofthisqualitythesky'sthelimitwithwhatyoucandowithit. 1Whatcanbeconcludedfromthepassage? A.TheresearchontheKoala'sDNAhaspreventeditsextinctionsuccessfully. B.ScientistsaretryingtorescueKoalasbyprovidingmoreeucalyptusleaves. C.Koala'sextinctionisbeingcontrolledeffectivelyinAustralia. D.ScientistsaretryingtofindawaybasedonKoala'sgenetosavethem. 2AccordingtothepassagewhichofthefollowingisTRUE? A.Koalascandigestpoisonousleavesthankstotheirgene. B.Koalasareparticularaboutleavesbecauseoftheirtaste. C.Koalasarebeingextinctjustduetohuman'sactivities. D.Koalaswillmovetoothercontinentsinordertosurvive. 3Thesky'sthelimitinthelastsentencemostprobablymeans. A.Theskyistherestriction B.Theskyistoohightoreach C.Thereisnolimit D.Thereisnopossibility 4Thepassageismainlyabout. A.Koala﹣aSpecialCreatureinAustralia B.scientificresearchonKoalas C.scientificeffortstosavetheKoalas D.Koala'sCharactersandPreference
Igraduatedin1941andofcoursegotcaughtinthewar.In1945Iwasouttwenty﹣oneyearsoldasoldierthrough35bombingmissionsandattheUniversityofWashingtontakingcreativewritingcoursessomethingI'dlookedforwardtoallthroughtheAirForce. I'dstartedwritingwhenIwasnineandwritingseemedtobetheonlythingI'deverbeableorwanttodo.MyteacherwasanewmannamedGrantRedfordaverygoodshortstorywritingteacherandasadman.HewasfromMontanaandhadbeenconnectedwiththeold.IthinkitbecamethebutI'mnotsureandIdon'tbothertolookitup.I'mafraidIwasnevermuchofastudentforRedford.Mystorieswerehopelesslyself﹣indulgent任性的onandonaboutmypersonalproblemswithoutformwithoutdevelopmentandwithoutevenanygoodwriting. HoweverIdidwritehumorinthosedaysandhadnotroublegettingitpublishedinthecampusmagazinethoughI'dhatetoseeitnow.Mostlymywritingwasusedtogetmyselfattentiontosatisfyaterriblepersonalinterestinself﹣admirationanditwasn'tuntilIconcentratedallmyeffortsonpoemsthatIwastorealizetheonlyrealrewardofwritingthatspecialwayyoufeeljustwhenyou'vedonesomethingyou like.That'sfarmoresatisfyingthanseeingyournameinprintgoodreviewspraiseorapplauseafterareading.Andmorelasting. 1Whatdoweknowabouttheauthor'schildhood? A.Agoodstudentofhisteacher. B.Crazyaboutwriting. C.Goodattellingshortstores. D.Longingtobeapilot. 2Howwashiswritingcareerattheearlystage? A.Productive. B.Successful. C.Struggling. D.Acompletefailure. 3Wheredidtheauthoreventuallyfindcomfortinwriting? A.Shortstories. B.Poems. C.Humorousstories. D.Goodreviews.
NowhereToHideWhatMachinesCanTellFromYourFace Thehumanfaceisaremarkablepieceofwork.1.Soistheface'sabilitytosendemotionalsignalswhetherthroughtheunconsciousshameorthetrickofafalsesmile.Peoplespendmuchoftheirwakinglivesintheofficeandthecourtroomaswellasthebarandthebedroomreadingfacesforsignsofattractionhostilitytrustanddeceit.Theyalsospendplentyoftimetryingtohidetheirfeelingsintentionsornature. 2.InAmericafacialrecognitionisusedbychurchestotrackworshippers'attendanceinBritainbyretailerstospotpastshoplifters.ThisyearWelshpoliceusedittoarrestasuspectoutsideafootballgame.InChinaitconfirmstheidentitiesofride﹣hailingdriverspermitstouriststoenterattractionsandletspeoplepayforthingswithasmile.Apple'snewiPhoneisexpectedtouseittounlockthehomescreen Setagainsthumanskillssuchapplicationsmightseemenhancive.Somebreakthroughssuchasflightortheinternetobviouslytransformhumanabilities.3.Althoughfacesarepeculiartoindividualstheyarealsopublicsotechnologydoesnotatfirstsightintrudeonsomethingthatisprivate.Andyettheabilitytorecordstoreandanalyseimagesoffacescheaplyquicklyandonavastscalepromisesonedaytobringaboutfundamentalchangestonotionsofprivacyfairnessandtrust. 4.Maskingtruefeelingshelpsfixthewheelsofdailylife.Ifyourpartnercanspoteveryprohibitedyawnandyourbosseveryhintofannoyancemarriagesandworkingrelationshipswillbemoretruthfulbutlessharmonious.Thebasisofsocialinteractionsmightchangetoofromasetofcommitmentsfoundedontrusttocalculationsofriskandrewardderivedfromtheinformationacomputerattachestosomeone'sface.Relationshipsmightbecomemorereasonablebutalsotransactional.
假如你是李华作为交流生在英国读书时住在Mrs.Brown家.现在刚回国不久打算给Mrs.Brown写封邮件内容包括 1.表示感谢 2.告知已寄送礼物 3.邀约她暑期游北京. 注意1.词数100左右.开头和结尾已给出.不计入总词数 2.可以适当增加细节以使行文连贯. DearMrs.Brown﹣﹣﹣﹣ Yours LiHua
ChinawillgreenlightInternetmedicalservicesconductedbymedicalinstitutionsaspartofabroaderpushtopromoteInternetPlusHealthcarethoseataStateCouncilexecutivemeetingchairedbyPremierLiKeqiangdecided. Medicalinstitutionswillbeallowedtoprovideonlinediagnosticservicesforsomecommonandchronicdiseasesinpatients'follow﹣upvisitstotheirdoctors.Thetoplevelsofhospitalswillbeencouragedtoprovideonlineservicesincludingconsultations会诊reservationsandtestresultinquiries. AsChinajoinstheranksofmiddle﹣incomecountriesthedemandforhealthserviceshasincreasedsubstantially.InternetPlusHealthcarecanhelpreducetheproblemofinaccessibleandexpensivepublichealthservicesthathavelongbeenabigconcernforthegeneralpublic. Onedecisioncomingoutofthemeetingsaystheintelligentreviewforhealthinsurancewillbeappliedandtheone﹣stopsettlementwillbeadvanced.Thereal﹣timesharingofprescriptionanddrugretailsaleswillbeexploredaswell. Wemustwastenotimeinpushingforwardthemeasuresoncethedecisionsmade.Lisaid.Inrecentyearstop﹣levelhospitalsinmajorcitieshaveseensteadyincreasesinthenumberofpatients.Medicalbillshavebecomeaheavyburdenonfamiliesandhigh﹣endmedicalresourcesstillfallshortofmeetingthegrowingdemandofthepublic. Tosolvetheproblematwo﹣pronged双管齐下的approachmustbetaken.Oneistoestablishmedicalpartnershipstostrengthencooperationbetweenmajorhospitalsandcommunityclinics.TheotheristobringforwardInternetPlusHealthcaretopromotethesharingofqualitymedicalresources. Thegovernmentwillseetoitthatlong﹣distancehealthcareservicescoverallcounty﹣levelhospitals.Somoreeffortswillbemadetoensurethathigh﹣speedbroadbandnetworkwillbeextendedtocovermedicalinstitutionsinurbanandruralareas.Dedicatedinternetaccessserviceswillbesetuptomeettheneedsforlong﹣distancehealthcareservices. 1Accordingtothetextwhichofthefollowingserviceswon'tapatientenjoyonline? A.Receivingamedicaloperation. B.Askingdoctorsforadviceafterthetest. C.Severaldoctorsdiscussionaboutthedisease. D.Makinganappointmentwithadoctorinadvance. 2WhyisthedemandforhealthservicesincreasinginChina? A.Theexpenseofmedicalcare. B.Therecognitionofhealthinsurance. C.Theimprovementofpeople'slifequality. D.Theinconvenienceofhospitalequipment. 3WhatdoesLimeanbysayingWemustwastenotimeinpushingforwardthemeasures? A.Thebillsareimpossibletoafford. B.Thesituationsareurgenttoimprove. C.Themeasuresareperfectlyworkedout D.Thehospitalsareunwillingtoadmitpatients. 4Whatcanbethesuitabletitleforthetext? A.ModernHospitals B.OnlineHealthcareonitsWay C.NoMoreBurdenforGeneralPeople D.WideApplicationsofInternetService
Whenwasthelasttimethatyoudialedaphonenumberfrommemory?Itprobablydependsonhowlongyou'vebeenusing1likeacellphone.Whilesomegenerationscanrecallthedaysofmemorizingphonenumbersit'spossiblethatmembersofGenerationZhaveneverhadtorememberasingle2.Whyisthis?Becausesmartphonesofferquickandconvenientwaysforstoringand3information.Thereisnoneedtomemorizeanything.Butthisisn'twithoutconsequence.Asdigitaldevicesdevelopmoreandmoreusers'heavyrelianceonthemmaybehavingdisablingeffects.Digitaldementia失智isthetermbeingusedbymedicalprofessionalstoidentifysomeoftheseeffects. SomeprofessionalslikeJimKwikanexpertinmemoryimprovementandoptimalbrainperformancearetakingacloserlookatthiseffect.Kwikdescribesdigitaldementialikethis…we're4ourbrainstooursmartdevices.We'resoreliantonoursmartphonesthatoursmartphonesaremakingusstupid.Asmedicalstudieschartthedeclineinmemoryandcognitiveskillsamongsmartphoneusersaconnectionismadebetweensymptoms5withdementia. Theseriousnessofoverusebecomes6whenyouconsiderjusthowyoungsmartphoneusersarebecoming.AuthorandspeakerSimonSinekpointsoutthatyoungmindsArenotreadyforit!Theirmindscannotcopewiththedopamine多巴胺.Consequentlytheoverstimulationofscreensandsoundsleadto7moreoftenthannot.Sonowparentsteachersandmanagersareaskinghowtohandletheinflux汇集ofyoungpeoplewiththiskindofaddiction. ●Firstmonitoryourcellphoneuse.KeepdownloadingapplicationslikeForestorChecky.Thencutbackonany8usage.Setaspecificgoalofhowmuchyouthinkyoushoulduseyourphone. ●Determine9areasforcellphoneuse.Forexamplewhileyou'reathomeonlyallowyourselftocheckyourphonesomewherelikeahomeoffice.Thiswaythetimeinbetweentasksisn't10filledwithstaringatyourscreen.
Angerisafeelingthatmanyofusknowalltoowell.Someofusexperienceitdaily1othersholdontoitforyearsatatime.Asyoulikelyknowangerisnotahealthy2.Overtimeitcanbecomeself﹣destructive3relationshipsandevenyourhealth. Thisisnottosaythatangerisalwaysa4thing﹣angerisanaturalpartoflivingitisa5thatsomethingiswrong.Ifangerisnota6normalandnaturalhumanemotionitis7importanttolearnandunderstandhowto8angertherightway. Youcanreleaseangertherightorthewrongway.9whetheryouhaveanangerproblemyourselfornotitis10foreveryonetounderstandwhattheright11ofreleasingangerare.Transformingangerisapowerful12totakethatwillcreatepositivechangesinourrelationships.Oneofthebestwaysto13angeristogiveyourselfthe14toexpressanger.Infactitisquitehealthytoexpressyourangeraslongasyoudoit15Rememberthatangermanagement16bothonmentalandphysicaleffort.Althoughmentaltherapyalonewillhelpyoutremendouslyforreleasingyourangeritcanonlytakeyousofar.Thesame17forexercisetoo.Howeverifyou18bothmentaltherapyandexercisingyouwillthenhave19toanunbelievablepositivesolution.Doaparticularphysicalactivity20thementalintentionofreleasingyouranger. 1A.when B.while C.but D.however 2A.life B.feeling C.happiness D.emotion 3A.reflecting B.ruining C.limiting D.satisfying 4A.bad B.good C.ordinary D.especial 5A.appearance B.mark C.signal D.gesture 6A.unbelievable B.completely C.incompletely D.carefully 7A.whatever B.how C.much D.however 8A.release B.relax C.absorb D.influence 9A.Insteadof B.Exceptfor C.Regardlessof D.Asaresultof 10A.important B.common C.hard D.easy 11A.answers B.messages C.ways D.actions 12A.step B.right C.attitude D.chance 13A.shift B.change C.move D.transform 14A.permission B.application C.affection D.admission 15A.confidently B.correctly C.gradually D.separately 16A.requires B.relies C.lacks D.decline 17A.arranges B.reaches C.prepares D.applies 18A.control B.join C.separate D.combine 19A.access B.approach C.admission D.contact 20A.inconflictwith B.ratherthan C.alongwith D.inplaceof
ImagineachildstandingonadivingboardfourfeethighandaskinghimselfthequestionShouldIjump?Thisiswhatmotivationorthelackofitcando.Motivationandgoalsettingarethetwosidesofthesamecoin.1.Likethechildonthedivingboardyouwillstayundecided. 2.Morethanthathowshouldyoustaymotivatedtoachievethegoal?Firstyouneedtoevaluateyourselfyourvaluesyourstrengthsyourweaknessesyourachievementsyourdesiresetc.Onlythenshouldyousetyourgoals. Youalsoneedtojudgethequalityanddepthofyourmotivation.Thisisquiteimportantbecauseitisdirectlyrelatedtoyourcommitment.Therearetimeswhenyourheartisnotinyourwork.3.Soslowdownandthinkwhatyoureallywanttodoatthatmoment.Clarity清晰ofthoughtscanhelpyoumoveforward. Anotherwayofsettingrealisticgoalsistoanalyzeyourshortandlongtermobjectiveskeepinginmindyourbeliefsvaluesandstrengths.Rememberthatgoalsareflexible.4.Theyalsoneedtobemeasurable.Youmustkeepthesepointsinmindwhilesettingyourgoals. Yourpersonalcircumstancesareequallyimportant.Forexampleyoumaywanttobeapilotbutcan'tbecomeonebecauseyoureyesightisnotgoodenough.5.Youshouldreassessyourgoalsandmotivateyourselftosetafreshgoal. Youwillsurelyneedtoovercomesomedifficultiessomeplannedbutmostunplanned.Youcannotovercomethemwithoutamplemotivation.Makesurethatyouplanforthesedifficultiesatthetimeofsettingyourgoals. A.Thiscanaffectyourwork. B.Sohowshouldyoumotivateyourself? C.Howeverthisshouldnotdiscourageyou. D.Sowhyshouldwetrytosetspecificgoals? E.Theycanchangeaccordingtocircumstances. F.Motivationiswhatyouneedmosttodoagoodjob. G.Withoutmotivationyoucanneithersetagoalnorreachit.
Hopehasprovedapowerfulpredictorofoutcomeineverystudywe'vedonesofarsaidDr.Snyderapsychologist. Inresearchwith3920collegestudentsDr.SnyderfoundthatthelevelofhopeamongfreshmenatthebeginningoftheirfirsttermwasamoreaccuratepredictoroftheircollegegradesthanweretheirS.A.T.scoresortheirgradepointaveragesinhighschool.StudentswithhighhopesetthemselveshighergoalsandknowhowtoworktoattainthemDr.Snydersaid.Whenyoucomparestudentswithequallearningabilityandpastschoolachievementswhatsetsthemapartishope. InseekingawaytoassesshopescientificallyDr.Snyderwentbeyondtheusualbeliefthathopeismerelythesensethateverythingwillturnoutallright.ThisideaisnotconcreteenoughitfailstoclarifytwokeycomponentsofhopeDr.Snydersaid. Havinghopemeansbelievingyouhaveboththewillandthewaytoaccomplishyourgoalswhatevertheymaybe. Despitethewisdomintheoldsayingwherethere'sawillthere'sawayDr.Snyderhasfoundthatthetwoarenotnecessarilyconnected.Inastudyofpeoplefrom18to70yearsoldDr.Snyderdiscoveredonlyabout40%ofpeoplearehopefulinthetechnicalsenseofbelievingtheytypicallyhavetheenergyandmeanstoaccomplishtheirgoalsabout20%ofthepeoplebelievedintheirabilitytofindthemeanstoattaintheirgoalsbutsaidtheyhadlittlewilltodosoanother20%havetheoppositepatternsayingtheyhadtheenergytomotivatethemselvesbutlittleconfidencethattheywouldfindthemeanstheresthadlittlehopeatallreportingthattheytypicallyhadneitherthewillnortheway. It'snotenoughjusttohavethewishforsomethingsaidDr.Snyder.Youneedthemeanstoo.Ontheotherhandalltheskillstosolveaproblemwon'thelpwithoutthewillpowertodoit. 1WhatdoesDr.Snyderthinkcanbestpredictafreshman'sacademicperformance? A.HisS.A.T.scores. B.Hishighschoolgrades. C.Hislevelofhope. D.Hisfamilybackground. 2Theunderlinedwordconcreteinthethirdparagraphprobablymeans• A.clear B.pure C.universal D.popular 3WhatdidDr.Syndersayabouttheoldsayingwherethere'swillthere'saway? A.Itisquiterealistic. B.Itisnotinspiringtostudents. C.Itistotallywrong. D.Itisnotalwaystrueinreality. 4Whatcanbethemostsuitabletitleforthepassage? A.Nopainsnogains. B.Hopeemergesaskeytosuccess. C.Willgetsitgoing D.Wherethere'sawillthere'saway.
JustHowBuggyisYourPhone? Whatiteminyourhomecrawlswiththemostgerms?Ifyousay1toiletseatyou'rewrong.Kitchenspongestopthelist.Butcellphonesareprettydirtytoo.Theycontainaround10timesasmanygermsastoiletseats.Peopletouchtheirphoneslaptopsandotherdigitaldevicesalldaylongyetrarelycleanthem. Inoneincidentathiefpaidaterriblepriceforstealingagermycellphone.HestoleitfromahospitalinUgandaduringawidespreadofthedeadlydiseaseEbola.Thephone'sownerreportedthetheftbefore2diefromthedisease.Soonthethiefbeganshowingsymptomsandfinally3confesstothecrime. 4inthatunusualcaseacellphonecarrieddangerousbacterianotallgermsarebad.Mostcausenoharm.Infacttheycouldprovidehelpfulinformation.Lookatthesurfaceofyourphonecarefully.Doyouseesomedirtymars?That'sallyousaysmicrobialecologistJarradHampton﹣Marcell.That'sbiologicalinformation. Itturnsoutthatthetypesofgermsthatyouapplyalloveryourphoneortabletaredifferentfrom5ofyourfriendsandfamily.They'relikeafingerprintthatcouldidentifyyou.Somedayinthefutureinvestigatorsmayusethesemicrobialfingerprintstosolvecrimes.Phonesanddigitaldevicesmaybeoneofthebestplacestolookforbuggyclues. Ina2017studyresearcherssampledarangeofsurfacesin22participants'homes6countertopsandfloorstocomputerkeyboardsandmice.Thentheytriedtomatchthemicrobialfingerprintsoneachobjecttoitsowner.Theofficeequipmentwaseasiesttomatchtoitsowner.Inan7earlystudyadifferentgroupofresearchersfoundthattheycouldusemicrobialfingerprintstoidentifythepersonwho8useacomputerkeyboardevenafterthekeyboardsatuntouchedfortwoweeksatroomtemperature. Onedaymicrobialsignaturesmightshow9peoplehavegoneandwhattheyhavetouched.Theycouldprove10anunmarkeddeviceisyours.Sosureyourphoneisprettygermy.Doesthatinspireyouordoesitjustbotheryou?
Manypeopleprefereatingoutinsteadofcookingathome.Achangeappearstobetakingplacethoughandmillennialsareleadingtheway.AccordingtoonesurveymoreyoungpeoplearestartingtocookathomeforthreebasicreasonsTheycansavemoneyeathealthyandwastelessfood. PopularTVchefsarealsogettingmillennialsexcitedaboutlearningsomebasiccookingskills.Manymillennialsviewcookingasaformofentertainmentandself﹣expression.TheyproudlypostpicturesoftheircookingcreationsonFacebookorInstagramandinvitefriendsovertosharethecookingexperience. Manymillennialshavealsofoundwaystoavoidwastingfood.Afterroastingachickentheyputtheleftoverbonesintheirfreezerinsteadofthegarbagecan.Latertheyusethebonestomakechickenstockwhichisanimportantingredientinmanydishes. Theyalsohatethrowingoutfruitthat'stooold.Toavoidthatsituationtheybakeripefruitlikeberriesandbananasfor15minutesat175degreesC.Thentheyfreezeitovernight.Afterthattheyplacethefruitinplasticbagsandstoreittheirfreezerforlateruse. Nowanymillennialsonlyeatatrestaurantsthathaveexcellentfood﹣wastepolicies.Theseservantsuseeverypartofthevegetablestheybuyincludingtheirstemsandrootsindishes.Theyalsousebeefchickenandporkbonestomaketheirownstock. Millennialsalsoreducefoodwastebyonlybuyingwhattheyrequire.Beforegoingtoamarkettheywritedownwhattheyneedanddon'tbuyanythingelse.Theywaytheywon'tpurchasemorefoodthantheycanconsume. 1Whatisthemainsubjectofthisarticle? A.Acookingtrendthathasattractedmillennials. B.Aplanthatmillennialshavefordonatingfood. C.Anovelcookingtechniquethatmillennialslike. D.Afoodproductionsystemfavoredbymillennials. 2Whatdomillennialswithfruitbeforefreezingit? A.Mixitwithotheringredientsinabowl. B.Carefullyremovetheskinandseedsfromit. C.Useasharpknifetochopitupintopieces. D.Putitinanovenatthepropertemperature. 3Accordingtothisarticlewhendomillennialsmakecarefulchoices? A.Whentheydineouttogether B.Wheytheyvoteforcandidates C.Whentheychooseanemployer D.Whentheyplantanewgarden 4Accordingtothisarticlehowdomillennialsavoidpurchasingtoomuchfood? A.Theyselectsmallcansandpackages. B.Theyprepareapracticalshoppinglist. C.Theyleavetheircreditcardsathome. D.Theyweighproducebeforebuyingit.
Forthefirsttimein10yearstheUnitedStatesgovernmenthaschangeditsguidanceonhowmuchexercisepeopleneedtostayhealthyandwhentheyshouldstart. Forchildrenandteens Thenewguidancestatesthatthemostimportanttimeforchildrentobeginexercisingisbetweentheagesof3and5.1Thatcouldbelightactivitiesmoderateactivitiesorevenvigorous剧烈的activities. Doctorssayitisimportanttostartyoung.Theyaddthatfrombirthtoage5achild'sbraindevelopsmorethanatanyothertimeinlife.2Alsochildrenwhostartexercisingatayoungagearemorelikelytoestablishhealthybehaviorstheywillcontinueintoadulthood. Butthatdoesnotmeanputtingasmallkidonatreadmill跑步机orotherexerciseequipment.3Afterallit'sakid'snaturetoplayfreelyandhappily. 4Butitshouldn'tbelessthanonehouradaythreetimesaweek.Theiractivitiesshouldmostlybeaerobic有氧的exercisesuchasbikingswimmingorrunningwhichcanstrengthentheheartandlungs.Suchexerciseshouldalsoincludemuscle﹣and﹣bone﹣strengtheningactivitiessuchasclimbingtreesorplaygroundequipmentandplayingsports. Foradults Foradultstheguidelinesrecommendexercising150minutesaweek.Thatcouldbewalkinggardeningdancingetc.5Expertssaythatevenshortamountsofaerobicexercisecanprovidehealthbenefitssuchasloweringbloodpressurereducinganxietyandimprovingsleep. A.Anykindofactivitythatgetspeopleexercisingwilldo. B.Aerobicactivityworksonlyifitlastsforatleast10minutes. C.Simplygivingakidthetimeandspacetoplayactivelyisenough. D.Childrenabove5canhavearelativelyshortertimefordailyexercise. E.Childreninthisagerangerequireaboutthreehours'activeactivitiesdaily. F.Attainingthehealthbenefitsfromexercisemaybeharderthanearlierthought. G.Thesedevelopmentshavea1astingeffectonachild'sabilitytosucceedinlife.
Tasteissuchsubjectivematterthatwedonotusuallyconductpreferencetestsforfood.Themostyoucansayaboutanyone'spreferenceisthatit'soneperson'sopinion.Butbecausethetwobigcolacompanies﹣﹣﹣﹣Coca﹣ColaandPepsiColaaremarketedsoaggressivelywe'vewonderedhowbigaroletastepreferenceactuallyplaysinbrandloyalty.WesetupatastetestthatchallengedpeoplewhoidentifiedthemselvesaseitherCoca﹣ColaorPepsifansFindyourbrandinablindtasting. WeinvitedstaffvolunteerswhohadastronglikingforeitherCoca﹣ColaorPepsiDietCokeorDietPepsi.Thesewerepeoplewhothoughtthey'dhavenotroubletellingtheirbrandfromtheotherbrand. Weeventuallylocated19regularcoladrinkersand27dietcoladrinkers.Thenwefedthemfourunidentifiedsamplesofcolaoneatatimeregularcolasfortheonegroupdietversionsfortheother.WeaskedthemtotelluswhethereachsamplewasCokeorPepsithenweanalyzedtherecordsstatisticallytocomparetheparticipants'choiceswithwhatmereguess﹣workcouldhaveaccomplished. Gettingallfoursamplesrightwasatoughtestbutnottootoughwethoughtforpeoplewhobelievedtheycouldrecognizetheirbrand.Intheendonly7outof19regularcoladrinkerscorrectlyidentifiedtheirbrandofchoiceinallfourtrials.Thediet﹣coladrinkersdidalittleworse﹣only7to27identifiedallfoursamplescorrectly. Whilebothgroupsdidbetterthanchancewouldpredictnearlyhalftheparticipantsineachgroupmadethewrongchoicetwoormoretimes.Twopeoplegotallfoursampleswrong.Overallhalftheparticipantsdidaboutaswellonthelastroundtastingasonthefirstsotirednessortasteburnoutwasnotafactor.OurpreferencetestresultsuggeststhatonlyafewPepsiparticipantsandCokefansmayreallybeabletotelltheirfavoritebrandbytasteandprice. 1Accordingtothepassagethepreferencetestwasconductedinorderto. A.showthataperson'sopinionabouttasteismereguess﹣work B.showwhichcolaisthemorelikingofthedrinkers C.findouttheroletastepreferenceplaysinaperson'schoiceofdrinking D.comparetheabilityoftheparticipantsinchoosingtheirdrinks 2Itisimpliedinthefirstparagraphthat. A.thecompetitionbetweenthetwocolasisverystrong B.theimprovementofqualityisthechiefconcernofthetwocolacompanies C.thepurposeoftastetestsistopromotethesaleofcolas D.blindtastingisnecessaryforidentifyingfans 3Thestatisticsrecordedinthepreferencetestsshowthat. A.Coca﹣ColaandPepsiarepeople'stwofavoritedrinks B.fewpeoplehadtroubletellingCoca﹣ColafromPepsi C.people'stastesdifferfromoneanother D.thereisnotmuchdifferenceintastebetweenCoca﹣ColaandPepsi 4Theauthor'spurposeinwritingthispassageisto. A.arguethattastetestingisanimportantmarketingstrategy B.showthattastepreferenceishighlysubjective C.emphasizethattasteandpricearecloselyrelatedtoeachother D.recommendthatblindtastingbeintroducedinthequalitycontrolofcolas
假定你是校排球队队长李华.请写封邮件告知你的队友Chris球队近期将参加比赛内容包括 1.比赛信息 2.赛前准备 3.表达期待. 注意 1.词数100左右 2.可以适当增加细节以使行文连贯.
DirectionsWriteanEnglishcompositionin120﹣150wordsaccordingtotheinstructionsgivenbelowinChinese. 假设你是明启中学高三学生卢平你的网友王磊近日就学习时如何记好笔记发邮件向你求教请给他回复一封电子邮件邮件必须包括以下内容 ●描述两到三个不同的笔记类型及其特征 ●如何记好笔记的建议 注意中文请不要出现真实的校名人名
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