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已知两点A（﹣1，0），B（1，0），以及圆C：（x﹣3）2+（y﹣4）2＝r2（r＞0），若圆C上存在点P，满足，则r的取值范围是（ ）
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高三下学期数学《》真题及答案
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设有连接两点A01B10的一条曲线．它位于弦AB的上方Pxy为曲线上任意一点已知曲线与弦AP之间的面
已知圆C过点A10和B30且圆心在直线y=x上则圆C的标准方程为.
已知抛物线与x交于A﹣10B30两点与y轴交于点C03求抛物线的解析式.
直线l与圆C.x2＋y2－4x＋2y＋a＝0a＜3相交于
，
两点，弦AB的中点为D.(1,0)，则直线l的方程为 A. x－y－1＝0B.x＋y＋1＝0
x－y＋1＝0
x＋y－1＝0
已知两点A.﹣10B.02点C.是圆x﹣12+y2=1上任意一点则△ABC面积的最小值是.
已知两点A.01B.10若直线y＝kx＋1与线段AB总有公共点则k的取值范围是________.
已知Pxy为平面上的动点且x≥0若P到y轴的距离比到点10的距离小1.Ⅰ求点P的轨迹C的方程Ⅱ设过点
已知直线lx－my＋m＝0上存在点M.满足与两点A.－10B.10连线的斜率kMA与kMB之积为3则
在平面直角坐标系中定义dPQ=|x1﹣x2|+|y1﹣y2|为两点Px1y1Qx2y2之间的折线距离
已知圆C.与x轴相切于点T10与y轴正半轴交于两点
,B(B在A.的上方)且AB=2,过点A.任作一条直线与圆O:x
2
+y
2
=1相交于M.、N.两点,下列三个结论: ①; ②； ③2.其中正确结论的序号是（ ）A. ①②
②③
①③
①②③
已知圆的方程为x2+y2﹣2x=0则圆心坐标为
（0，1）
（0，﹣1）
（1，0）
（﹣1，0）
在平面直角坐标系xOy中已知圆C.与x轴交于A.10B.30两点且与直线x－y－3＝0相切则圆C.的
在平面直角坐标系中定义dP.Q.=|x1﹣x2|+|y1﹣y2|为两点P.x1y1Q.x2y2之间的
在平面直角坐标系中定义dP.Q.＝|x1－x2|＋|y1－y2|为点P.x1y1到点Q.x2y2的折
1个
2个
3个
4个
已知抛物线经过两点A.10B.0－3且对称轴是直线x=2求此抛物线的解析式.
已知直线l过点－10l与圆C.x－12＋y2＝3相交于A.B.两点则弦长|AB|≥2的概率为____
已知在平面直角坐标系xOy中圆C.的方程为x2＋y2＝－2y＋3直线l经过点10且与直线x－y＋1＝
，
两点，则△OAB的面积为( ) A.1 B.
2
2
已知点M.－10N.10曲线E.上任意一点到点M.的距离均是到点N.距离的倍.Ⅰ求曲线E.的方程Ⅱ已
已知P.点在曲线F.y＝x3－x上且曲线F.在点P.处的切线与直线x＋2y＝0垂直则点P.的坐标为
(1,1)
(－1,0)
(－1,0)或(1,0)
(1,0)或(1,1)
.如图P.是直线x=4上一动点以P.为圆心的圆Γ经定点B.10直线l是圆Γ在点B.处的切线过A.﹣1
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ABriefHistoryOfWaterstone's 1AccordingtothepassagewhoisthemostlikelytobethemanagingdirectorofWaterstone'sinthenearfuture? A.Mr.Waterstone B.JohnBanville C.JamesDaunt D.SimonFox 2Whatdoesthewordintuitionmeaninthepassage? A.instinctiveknowledge B.mentalimage C.calmconsideration D.indirectsuggestion 3Whichoneofthefollowingisnottrueaccordingtothepassage? A.AtpresentthebrandWaterstone'sbelongstoHMV. B.Duringtheeconomydeclinesthebookmarketwashitandsaleswerepoor. C.Waterstone'shaslongbeenthelargestbookstorechainintheU.KandIreland. D.Mr.Waterstonemade£41000whenhetransferredthechaintoWHSmith.
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A.declineB.investedC.scratchingD.harvestE.farmersF.barely G.occurrenceH.implementationI.unmarketableJ.adjustmentsK.enemies LikemanypeopleactingonthedesiretoeathealthyandlocalAcropolisresidentEduardoJimenezdecidedtoplantagardeninhisbackyard.Heploughedthesoilheplantedtheseedsandheevensetupafencetokeepoutthedeer.Eduardodideverythingright.Orsoitseems.Howeverwhen1timehascomehehasnotonetomatobeanorleafoflettucetoshowforhishardwork.Howdidthishappen?Theanswercomesintheformofasmallbrownparticularlysmellyinsectthestinkbug. Unliketheirpickycousinsstinkbugsfeedonsome300speciesofplantsincludingfigsblueberriescornandkiwifruitsaswellassoybeanspeasandweeds.Althoughtheydolittledamagetotheplantitselftheymakethefruitsandvegetables2.Forthisreasonstinkbugsposethemostseriousthreattothebigagriculturalistsandmacrofarmoperators.Macrofarmershavemore3intheirproduceandthereforehavemoretolose.WhilehobbyistslikeEduardoarelefttofacethedisappointmentofanunsuccessfulgardenmacrofarmersareforcedtolivewiththelossofentiretractsofcashcrops﹣afactthathasleftmany4abletoclothetheirchildrenorputfoodonthetable. LastseasonaloneseveralNewJerseypepperfarmerssaw75%oftheircropsdamaged.PennsylvanialosthalfofitspeachpopulationandaccordingtotheUSAppleAssociationapplefarmersinthemid﹣Atlanticstateslost$37million.Thisyearcouldbeworse.Asaresultofthis5inthesupplyoffreshfruitsandvegetablesshoppershaveseen6﹣sometimesquitedramatic﹣inpricesatthegrocerystore.PricesofapplesinMarylandareup8%.Inthenorth﹣Atlanticstatespricesforpeppersshotupanastonishing14%.Notonlyaretheseitemsbecomingmoreexpensivebuttheyarealsogettinghardertofind.LastweekMargeJenkinsofAthensGeorgiareportedhavingtocheckthreedifferentstoresbeforeencounteringadecentbatchofpeas.Andthissheassuresusisaregular7.AccidentallybroughtfromAsiathestinkbughasnonatural8inAmericaandthusitspopulationisrisingsharply.Reportedsightingsofstinkbugsarebecomingincreasinglynumerousasthedriedbrowntrapezoidal不规则四边形shellsofthedeadbugsareeverywhereinsomeareas.Thishasfarmersandscientistsalike9theirheadsinsearchofaremedy.HopetheybelievemayliewithanAsianparasiticwasp黄蜂whichhelpfullylaysitseggsinsidestinkbugeggs. Thelarvae幼虫ofthewaspconsumethestinkbugfromtheinside.Butthe10ofsuchasolutionisstillseveralyearsawayasscientistsmustfirstdetermineifitissafeforthewasptobeintroducedintoAmerica.Untilthensomefarmersareresortingtohomemadetraps.Othershaveevencontemplatedtheuseofpeacocksandprayingmantiseswhichtheyimaginewillgulpdownthelittlestinkers.
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Ifyouareaperfectionistyouareprobablyfamiliarwiththefeelingofwantingtogeteverythingjustright.Youmaystrugglewithhandinginpapersagonize苦苦思索overprojectsatworkandevenworryaboutsmallerrorsfromthepast.High1areonethingbutperfectionismisquiteanother.Andassomeresearchershavediscovered2perfectioncanhaveseriousconsequencestomentalandphysicalwell﹣being. Sinceperfectionismis3withnegativeoutcomeswhatcansomeonewithperfectionisttendenciesdotochangetheirbehavior?Althoughpeoplearesometimes4togiveuptheirperfectionisttendenciespsychologistspointoutthatgivinguponperfectiondoesn'tmeanbeingunsuccessful.5mistakesareanimportantpartoflearningandgrowing.6imperfectioncanactuallyhelpusinthelongrun. Onepossible7toperfectionisminvolvesdevelopingwhatpsychologistscallagrowthmindset思维方式.ResearchersatStanfordUniversityhavefoundthatcultivatingagrowthmindsetisakeywaytohelpuslearnfromourfailures.Unlikethosewith8mindsets﹣whoseetheirskilllevelsasinbornandunchangeablethosewithgrowthmindsetsbelievetheycanimprovetheirabilitiesbylearningfromtheirmistakes.Psychologistspointoutthatparentscanplaya9roleinhelpingtheirchildrendevelophealthierattitudestowardsfailuretheycanpraisetheirchildrenformakinganefforteveniftheirresultsareimperfectandhelpchildrenlearnto10whentheymakemistakes. Another11optionforperfectionismistocultivateself﹣compassion自我同情.Tounderstandself﹣compassionthinkabouthowyouwould12aclosefriendiftheymadeamistake.Chancesarethatyou'dprobablymakeresponseswithkindnessandunderstandingknowingthatyourfriendmeantwell.Theideabehindself﹣compassionisthatweshouldtreatourselves13whenwemakemistakesremindourselvesthatmistakesarepartofbeinghumanandavoidbeing14bynegativeemotions.Self﹣compassioncanbebeneficialformentalhealthbutperfectioniststendnottotreatthemselvesincompassionateways.Ifyou'reinterestedintryingtofostermoreself﹣compassiontheresearcherwhodevelopedtheconceptofself﹣compassionhasashortexerciseyoucantry. Psychologistshavealsosuggestedthatcognitive认知的behavioraltherapycanbeawaytohelppeoplechangetheirbeliefsaboutperfectionism.Althoughperfectionismislinkedtolowermentalhealththegoodnewsisthatperfectionismissomethingyoucanchange.Byworkingtoseemistakesaslearning15andreplacingself﹣criticismwithself﹣compassionit'spossibletoovercomeperfectionismanddevelopahealthierwayofsettinggoalsforyourself. 1A.risks B.values C.profits D.standards 2A.identifying B.mirroring C.concealing D.pursuing 3A.burdened B.associated C.compared D.replaced 4A.hesitant B.courageous C.desperate D.bound 5A.Forinstance B.Bycontrast C.Infact D.Onaverage 6A.Therefore B.Otherwise C.Furthermore D.Instead 7A.obstacle B.alternative C.attitude D.equivalent 8A.various B.fixed C.positive D.keen 9A.casual B.creative C.crucial D.changeable 10A.persevere B.scheme C.negotiate D.survive 11A.potential B.conditional C.unique D.sustainable 12A.competewith B.runafter C.respondto D.arguewith 13A.favorably B.kindly C.accordingly D.differently 14A.promoted B.inspired C.monitored D.consumed 15A.skills B.outcomes C.levels D.opportunities
DirectionsWriteanEnglishcompositionin120—150wordsaccordingtotheinstructionsgivenbelowinChinese. 假设你是明启中学的高三学生卢平.学校英语报向高三学生进行征文题目为Mydream.卢平也想投稿.稿件内容必须包含 1.近来我反复地做着相同的梦我捧着那纸温暖的大学录取通知书…… 2.社会教育学校教育和家庭教育都会给予我力量去实现梦想.
A.involveB.strategicallyC.delicateD.shameE.weaknessesF.sensitivity G.superiorH.occasionalI.encounterJ.cluesK.collapse Forseveraldecadesvarioustypesofartificialintelligencekeptshockingtheworld.Robotscould1peopleinhighlycompetitivegamesandthenquicklydestroyedtheirhumancompetitors. AIlongagomasteredchesstheChineseboardgameGoandeventheRubik'scubewhichitmanagedtosolveinjust0.38second. Nowmachineshaveanewgamethatwillallowthemto2humansJengathepopulargameinwhichplayers3removepiecesfromanincreasinglyunstabletowerof54blocksplacingeachoneontopuntiltheentirestructurewould4. AnewlyreleasedvideofromMITshowsarobotdevelopedbytheschool'sengineersplayingthegamewithsurprisingaccuracy.Themachineisequippedwithasoftgripper夹子aforce—sensingwristandanexternalcameraallowingtherobottodetectthetower's5thewayahumanmightdo UnlikeinpurelyrecognitivetasksorgamessuchaschessorGoplayingthegameofJengaalsorequiresmasteryofphysicalactssuchaspushingpullingplacingandarrangingpieces.Itmust6interactivephysicaloperationwhereyouhavetotouchthetowertolearnhowandwhentomoveblocks. ImitatingitisratherdifficultsotherobothastolearnintherealworldbyworkingwiththerealJengatower.RecentlyarelevantresearchwaspublishedinthejournalScienceRobotics.Researcherssaytherobotdemonstratesthatmachinescanlearnhowtoperformcertaintasksthroughactualtouchinginsteadofrelyingheavilyonvisual7.Thatphysical8issignificantresearcherssaybecauseitprovidesfurtherproofthatrobotscanbeusedtoperform9taskssuchasseparatingrecyclableobjectsfromlandfilltrashandassemblingconsumerproducts. Inacellphoneassemblylinethefellingofanycomponentiscomingfromforceandtouchratherthanvision.TobecomeanaccomplishedJengaplayertherobotdidnotrequireasmuchrepetitivepracticeasyoumightimagine.HopingtoavoidreconstructingaJengatowerthousandsoftimesresearchersdevelopedamethodthatallowedtherobottobetrainedonabout300games.Researcherssaytherobothasalreadybegunfacingoffagainsthumanswhoremain10players—fornow.
TheMusicIndustry—ANewIndustry Notlongagomostprofessionalmusicianslivedinaworldfarremovedfrombusinessmanagementdistributionandpromotion.Buttodaysocialmedialaptopproductiontechniquesandmusicaltasteshavelargely1theoldrelationshipbetweenmusicianstheiraudiencesandthemarketplace. AleadingU.S.conservatory音乐学院nowteachesstudentshowto2successfulcareersinthisnewworld.RobertSirotapresidentofNewYork'sfamousManhattanSchoolofMusictakesasmallbreakfromhisworktoplayoneofhisown3.It'sonemomentoftraditionalmusicalexpressioninaconservatorythat4thatthemusicindustryisinmajorchange. Everythingweknowaboutthe5ofmusic—makingandtheindustryofmusic—includingrecordingspublishedmaterialsconcertplacesthewaypeopleenjoytheperformanceandconcerts—havechangedrapidlyinthelast20yearshesaysanditbecamecleartomeandotherpeopleoflikemindto6howtodevelopyoungartisticleaderswhoaretruly7ofmakingtheirwayinthisnewworld. That'swhytheManhattanSchoolofMusiccreatedtheCenterforMusicEnterprisewherestudentscanlearnaboutnewmediafundraising8theirownconcertseriesproducingtheirownrecordingscreatingapackageforthemediaandothernecessaryskills.Sirotawhocompletedhisownconservatoryeducationinthe1970s9today'sInternetworldwithwhatusedtobe. The10asweunderstoodinthemusicworldwasthattherewereasmallnumberofmajorinternationalsymphonyorchestrasthereweresomeexcellentperformersandtherewasan11audienceofconcertgoershesays.Therewereinadditionseveralmulti—nationalrecordcompanies.Butwhathashappenedisthewaypeoplelistentomusichaschanged.Klormanknowsthatmanyyoungmusiciansareworriedabouttheinformationneededto12asuccessfulcareertoday.Howeverhesaysthecurrentclimaterewardspersonalinitiativeandimaginationasneverbefore.Andifwearecreativeaboutputtingtogethernew13wecancarveoutawholenewmarketforourselves. The14attheCenterforMusicEnterpriseareamongthemostpopularattheManhattanSchoolofMusic.Infactthesupplyisnot15tothedemandandtheprogramisexpanding.Thissuccesshasinturninspiredotherconservatoriestoteachbusinessskillsfortomorrow'smusicalcareers. 1A.sponsored B.replaced C.constructed D.competed 2A.create B.undertake C.reflect D.arrange 3A.compositions B.solutions C.projects D.channels 4A.claims B.appeals C.declares D.recognizes 5A.event B.item C.business D.affair 6A.figureout B.carryon C.makeup D.setabout 7A.aware B.capable C.ignorant D.independent 8A.inventing B.transferring C.searching D.launching 9A.associates B.differs C.contrasts D.varies 10A.situation B.fight C.statement D.disaster 11A.established B.constructed C.founded D.instructed 12A.remain B.insist C.persevere D.sustain 13A.customs B.traditions C.opportunities D.purposes 14A.courses B.activities C.responsibilities D.contracts 15A.suitable B.adequate C.exact D.crucial
Shotinmorethan40locationsinL.A.themusicalLaLaLandisalovelettertothecity''.TocoincidewiththeUKreleaseweaskedalocalwritertopicksomeofthefilm'samazingsettings. JudgeHarryPregersonInterchange LaLaLand'sopeningsceneisasix﹣minutedancethatplaysoutinL.A.'sbadtraffic.Itisalsowherethefilm'sleadingrolesstrugglingactressMiaandjazzpianistSebastianfirstencountereachother﹣inaroadangerincident.ThesceneissaidtohavebeenfilmedovertwohotdaysinsouthL.A. SmokehouseRestaurantBurbank ThisisthesettingforthesceneinwhichMiadiscoversSebastian'stalentforthepiano.ThefictionalLipton'srestaurant﹣wherejazzpuristSebastianwasreluctanttoplayChristmasmusic﹣isinrealityaplacelongfrequentedbyactorsproducersandothershowbusinesstypes.IthasbeenonthisspotacrossthestreetfromtheWarnerBrosstudiosince1949.InthefilmtheouterwallofLipton'sistheYouAretheStarmural壁画whichfeaturesMarilynMonroeCharlieChaplinandotherswhichisonthecomerofHollywoodBoulevardandWicoxAvenueinHollywoodinreality. WarnerBrosStudiosBurbank Miaworksatthestudio'scoffeeshopwhereSebastiancomestomeether.Astheywanderthestudio'slotMiapointsoutthewindowthatHumphreyBogartandIngridBergmanlookedoutinCasablanca.It'soneofthefilm'snumerousnodstomoviehistory.WarnerBronsisstillaworkingstudiowith35soundstages14exteriorsetsandvisitortours. Cathy'sCornerMountHollywoodDrive ThissectionoftheroadthatwindsthroughGriffthParkisthesettingoftheirdanceplay.ItoverlookstheSanFernandoValleyandfeaturesonthefilmposter.Cathy'sComerisnearfamedMulhollandDrivebutpreparefordisappointmentifyou'reexpectingaparkbenchandstreetlampswhichonlyexistinthemovie. 1Inordertoencountersomefilmstarsyoumaygoto. A.JudgeHarryPregersonInterchange B.SmokehouseRestaurant C.WarnerBrosStudio D.Cathy'sComer 2Miamentionedtheunderlinedsentencesoasto. A.stressWarnerBrosisstillinfunction B.showrespectformoviesofpreviousgenerations C.illustrateLaLaLandwasfilmedatHollywoodCenterStudios D.compareMiaandSebastian'slovestorywithHumphreyandIngrid 3Inwhichsectionofawebsitecanyoumostprobablyfindthispassage? A.NatureandEnvironment. B.CityandTransport. C.TravelandRecreation. D.FoodandHealth.
ARCHAEOLOGISTS考古学家GUIDEDBYlaserimagesofaremoteregionofnorthernGuatemalahavediscovered20—foot—highwallswatchtowersandotherevidencethatancientMayasocietieshadbeenannoyedbywarfarethreatovermanyyears.Thefindshaveupendedlong—establishedimpressionsofacivilizationthatittamedthejungleandbuiltthrivingcitiesthendeclinedanddisappearedquietlybeneaththedensetropicalforest. AmongthemostsurprisingdiscoverieswasalargestonecomplexnowcalledLaCuemavilla.Builtonasteepridgetheheavilyfortifiedsiteincludedhighwalls.Moatswhichservesasthelargestdefensivesystemeverdiscoveredintheregion. ThiswassurprisingsaysanarchaeologistbecausewehadatendencytoromanticizeMayawarfareassomethingthatwaslargelyritualized.Butthefortificationswereseeingsuggestanelevatedlevelofantagonismovercenturies.Rulersweresodeeplyalarmedthattheyfelttheneedtoinvestinallthesehilltopfortifications.Thereisanalmostvisiblesenseoffearinthislandscape. AllthesefindingsowecredittoPACUNAMLIDARInitiativealasersurveyofsome800squaremilesoftheMayaBiosphereReserveinnorthernGuatemala.UsingrevolutionaryLasertechnologythesurveyrevealedthelong—hiddenruinsofasprawlingpre—ColumbiancivilizationthatwasfarmorecomplexandinterconnectedthanmostMayaspecialistshadsupposed. GuidedbythenewLasertreasuremapstheLIDARteamdeployedthroughthejungleoverthepastyeartoconducthands—oninvestigationsofmorethanadozenofthemostpromisingsites—mostofwhichwouldhavebeenimperceptiblewithoutLIDAR. Youcouldwalkoverthetopofamajorruinandmissitsaysanarchaeologistwho'spartofthePACUNAproject.ButLIDARpicksupthepatternsandmakesthefeaturespopoutwithsurprisingclarity. Three—dimensionalmapsgeneratedbythesurveyyieldedsurprisesevenatTikalthelargestandmostextensivelyexploredarchaeologicalsiteinGuatemala.Theancientcitywasatleastfourtimesbiggerthanpreviouslythoughtandsurroundedbyamassiveditchandfortifiedbasestretchingformiles. ArchaeologistsstressthatLIDARforallitsutilitywillneverseebelowthegroundoryielddirectdatesofoccupation.westillneedtodigandhackourwaythroughthejunglebutnowwehaveaveryaccuratemaptoguideus. 1HowdidpeoplethinkofMayabeforethediscoveryofthedefenseruins? A.Itwasthemostadvancedcivilizationinthehistoryofmankind. B.Itwaslongunderthethreatoflarge—scalewars C.Itsriseanddeclinewereunderwaypeacefully D.Itwasfinallydestroyedbyalarge—scalewar 2Theunderlinedwordantagonismisclosestinmeaningto. A.misery B.revolution C.populationdecrease D.opposition 3WhichofthefollowingstatementsisTRUEaccordingtothepassage? A.ThemilitarymechanismfoundinLaCuemavillawasintendedforoccupyingmorelands. B.Thenewlasertechnologywasmainlyusedtoenlargetheoriginalsitesize. C.TheLIDARhelpstoavoidthetraditionaldiggingtaskinsiteexploration. D.TheTikalsitewasfoundtobeprotectedbycertaindefenseworks 4Thepassageismainlyabout. A.people'slong—timemisunderstandingofMayacivilization. B.discoveryofMayamilitaryworksaidedbynewexploretechnology C.thefindingofabigwarfareresultinginthedisappearanceofMayacivilization D.Thevariousadvantagesofnewtechnologiesinthefieldofarchaeology.
AftersomebloodtestsDrStubsstoodbeforemeatallmanbutshortonpersonalityandsportingacoldexpression.Youhavesystemiclupus.hesaidmatter—of—factly.Lupushecontinuedisanauto—immunediseaseand….IremembercertaindetailsbutmostlyIrememberhimtalkingaboutchildren.Childrenarenoharm.Butchildbirthwouldjumpstartadditionalsymptomsthatcouldbelifethreatening.Youalreadyhavetwokidsanyway. AsIgotuptoleaveshakenanddrainedhesaidhispartingwordsIwoulddiscourageanyfurtherresearch.Thereisnocureandnothingcanpreventitsprogression. StillIdidresearchlupusanditssymptomstirednessandjointpain—werebothconsistentwithwhatIwasexperiencing.Andeventuallysomemajororganscouldbeaffectedcausingshutdownandpossiblydeath. Istudiedandfoundoutthatechinaceahadarecordinmakingimmunesystemstronger.IdecidedthatalongwiththeplantIwouldstrengthenmymindsetbyimmersingmyselfinmyfamilywithmyone—year—oldsonandthree—year—olddaughter. AfteranothervisitIdecidednevertogobacktoDr.Stubs.Howcouldoneendurerepeatedlyheardesperatelywordscomingfromanemotionlessmoutheventhoughtheyweretruth?Theyearspassed.WhenIwouldfeeltiredandachyIpulledsupportfrommychildrenandtheirlaughter. FinallyaftereightyearsIwenttoDr.Kirsteinwhowasrecommendedbyafriend.Shestoodthereholdingmyhandandlookingintomyeyeswarmly Solet'stalkalittle Instantlymydefensesweredown.BeforeIknewitshehadmerunningonandonaboutmychildrenmyhusbandmylifeanddreams.ItoldheraboutallthemeaningfulactivitiesIwasinvolvedinthosethingsImighthaveneverdonewithoutthedisease. Afterseveralfollow—uptestsandgreaterresearchintomyfamilyhistoryDr.Kirsteincametoconclusiveanswer.Ididnothavesystemiclupus.Theremustbesomethingwrongwiththeinitialtests8yearsbefore. Ididn'tknowwhetherIshouldjumpforjoyorscreambecauseIhadbeenlivingthelasteightyearsinfearofafataldisease.ButthenIrealizedthatIhadbeenlivingeverydaynotsomuchinfearbuthappinessEvendaywasagiftandIknewit. 1Dr.Strubswarnedtheauthoragainsthavingmorechildrenbecause. A.Theprocessofgivingbirthputherlifeindanger. B.Takingcareofchildrenwillgraduallyworsenherdisease. C.Herdiseasewillthreatenthehealthofherchildren. D.Shealreadyhasenoughchildren. 2WhydidtheauthorstopseeingdoctorStrubsaftertwovisits? A.Becauseshenotqualifiedtotreatherdisease. B.BecauseherecommendedDr.Kirksteintoher. C.Becausehiscoldattitudeupsettheauthor. D.Becauseshesuspectedhisdiagnosisaboutherdisease. 3Howdidtheauthordealwiththedisease? A.Shecalmlywaitedformajororganstoshutdown. B.shetookeffectivemedicineregularlytofightthedisease. C.SheturnedtoDr.Kirsteintogetcureforthedisease D.Shetriedtostrengthenimmunesystemanddrewstrengthfromfamily. 4Whydidtheauthorthinkeverydayinthepast8yearswasagift? A.Becausesystemiclupuswasnolongeradeadlydisease. B.Becauseshemadeeverydayvaluableinspiteofdisease C.Becauseshereceivedagifteverydayfromherfamily D.Becausesheonlyoccasionallyfeltpainandtiredness.
Liketheirancienttoga﹣wearingcounterpartsmodernphilosopherscontinuetodisagreeonthenatureoffreewill.Dowereallyhaveanycontroloverthechoiceswemakeandthethingswedesireandifsotowhatdegree? TheoriesoffreewillvarybuttheancientwordsofPlatostilllineupwithourmodernperceptions概念oftemptationandwillpower.TherespectedGreekphilosopherarguedthatthehumanexperienceisoneofconstantstrugglebetweentheintellectandthebodybetweenrationalityanddesire.Alongtheselinestruefreedomisonlyachievablewhenwillpowerunchainsusfrombodilyemotionalinstinctualslavery. Youcanfindsimilarthoughtsthroughoutworldreligionsmostofwhichofferaparticularandoftendifficultpathtoriseaboveourdarkernatures. Andscience?Wellsciencemostlyagreeswithallofthis.Willpowerisallaboutovercomingyournaturaldesirestoeatcupcakesskipyourmorningworkoutplaygamesonmobilephonehitthesnoozealarmandcheckyoure﹣mailduringafuneral. Yourwillpowerhoweverislimited.Iflifewereavideogameyou'dseeaglowingwillpowerorego自我meteratthetopofthescreennexttoyourlifemeter.Successfullyresistonetemptationandthemeterdrainsalittle.Thenexttemptationdrainsthewillpowermeterevenmoreuntilthere'snothingleftatall. Ourmodernscientificunderstandingofwillpowerinlargepartstemsfroma1996researchexperimentinvolvingchocolateandradishes小红萝卜.PsychologistRoyBaumeisterledastudyinwhich67testsubjectswerepresentedwithtemptingchocolatechipcookiesandotherchocolate﹣flavoredtreatsbeforeapersistence﹣testingpuzzle.Here'sthecatchTheresearchersaskedsomeoftheparticipantstowithdrawfromsweetsandsnackonradishesinstead. Baumeister'sresultstoldafascinatingstory.Thetestsubjectswhoresistedthesweetstuffinfavorofradishesperformedpoorlyonthepersistencetest.Theysimplydidn'thavethewillpowerlefttoresistslackingoff松懈. Theresearchinspiredmorethanathousandadditionalstudiesdiscussingeverythingfromtheinfluenceofpositivemessagestotheego﹣sappingpowerofdailydecisions. Studiesalsoshowthatcognitivecapacityalsoaffectsourabilitytoholdoutagainsttemptation.Cognitivecapacityisessentiallyyourworkingmemorywhichyouemploywhenresistingatemptation…orholdingastringofnumbersinyourhead.A1999studyfromtheUniversityofIowaprofessorBabaShivfoundthatpeopletaskedwithrememberingatwo﹣digitnumberheldoutbetterthanpeoplerememberingaseven﹣digitnumberwhentemptedwithchocolatecake. 1Whatdoyouunderstandby‘freewill'? A.Thecontrolwehaveoverthechoices. B.Thechoiceswemakeandthethingswedesire C.Thechoicesthatphilosophersforceustomake D.Ourperceptionoftemptation. 2AccordingtoPlatowhenistruefreedomavailable? A.Whenthereisastrugglebetweentheintellectandthebody B.Whenourwillpowerhelpsustoovercomeourbasicinstincts C.Whenwedesirethatwhichwecannotachieve D.Whenwehavenocontroloverourego 3Whatismeantby‘cognitivecapacity'? A.Willpowertorealizeone'sownego. B.Ourabilitytoovercometemptation C.Ourabilitytorememberthings. D.Thedesiretogiveintotemptation
A.Howevermealkitsarelikelyheadingforthemainstream. B.Ifit'ssingle﹣useandthrownawaythepackagingisakiller. C.Inthatcaseyoumightreplacedozensofcartripswithonetrucktrip. D.Mealknitsarriveonyourdoorstepbytruckfilledwitheveryingredientyouneed. E.Tailor﹣mademealkitssavewastebyprovidingprecisequantitiesoffreshingredients. F.IffoodwastewasacountryitwouldrankthirdinemissionsbehindtheUSandChina. MealKits餐具cutfoodwastebutpackagingisaproblem Homedeliverymealkitscanslash大幅削减foodwastebymorethantwo﹣thirdsbutsuppliersneedtoswitchtoreusablepackagingtomakethemenvironmentallyfriendly. 1Thatmeansleftoversareminimized.Butwhilethedeliveryservicesscorewellonreducingfoodwastebuyingthesameingredientsfromthesupermarketalmostalwayssavesenergyoverallsimplybecausemealkitsusesomuchsingle﹣usepackaging.Thegoodnewsisthatifyouhavemealsthataretailoredforconsumptionpeoplewon'tover﹣buyandyouhavelessfoodwaste.Youfine﹣tunetheportionstowhatpeoplewillactuallyeat. Beyondthecostofthewasteitselfthrown﹣awayfoodgeneratesmethane甲烷thatcontributestoclimatechange.2A2018reportfromtheBostonConsultingGroupfoundthatthewastewassettosoarbyathirdby2030whenglobalfoodwastewasestimatedtoreach2.1bntonnes. Mealkitscanreducetransportemissionsiftheymeanpeopletakefewertripstothesupermarket.Ifpeopleonlywenttobuygoodsthatareunlikelytodecaysuchassoapandtoiletpapertheymightonlyhavetovisitthesupermarketonceeverycoupleofmonths.Thatdeliverytruckcancarrymealsforyouanddozensofneighbors.3 Thestudyfoundthatevenifdeliveredmealkitsreducedfoodwastetozerotheywouldstilluseupmoreenergyoverallthanbuyingthesamefoodfromthesupermarketunlesstheenergyusedforthemealkitpackagingwascutbyafifth.4Alltheenvironmentalbenefitsarelost.Butifthepackagingcanbereusedyoucangetsomebenefits.
让我印象最深的是单身女性已成购房新军.impress
DirectionsWriteanEnglishcompositionin120﹣150wordsaccordingtotheinstructionsgivenbelowinChinese. 近期你朋友Sandy打算来上海迪士尼乐园游玩现就住宿场所园区内酒店还是园区外民宿【B&B】的选择写信征询你的意见.假设你是李明请回信.你的信必须包括 1.简述你对住宿场所选择的建议 2.说明你的理由从价格环境便利性等方面进行对比.
虽然关注自己的快乐没有错但把快乐传播给身边的人总是一件不错的事.communicate
Beingabletolandsafelyisacriticallyimportantskillforallflyinganimals.Whereasterrestrialanimalsfacenoparticularchallengewhentheyneedtostoprunningorcrawlingflyinganimalsmoveatmuchhigherspeedsandtheymustbecarefulabouthowtheyland.Hittingthegroundorevenwateratfullflightspeedwouldbequitedangerous.Beforetouchingdowntheymustdecreasetheirspeedinordertolandsafely.Bothbatsandbirdshavemasteredtheskilloflandingbutthesetwotypesofflyersgoaboutitquitedifferently. Inthepastitwasbelievedthatintermsofflyingmechanicstherewaslittledifferencebetweenbatsandbirds.Thisbeliefwasbasedonlyonassumptionhoweverbecauseforyearsnobodyhadactuallystudiedindetailhowbatsmovetheirwings.Inrecentyearsthoughresearchershavediscoveredanumberofinterestingfactsaboutbatflight.Batsarebuiltdifferentlyfrombirdsandtheirwingsincorporate结合boththeirfrontandhindlimbs后肢.Thismakestheirlimbsworkingtogethermoredifficultforbatsandasaresulttheyarenotverygoodatflyingoverlongerdistances.Howeverabatcanquicklychangeitsdirectionofflightorcompletelyreverseitsomethingabirdcannoteasilydo. Anotherinterestingcharacteristicofbatflightisthewayinwhichbatsland﹣upsidedown!Unlikebirdswhichtouchdownonthegroundorontreebranchesbatscanbeobservedflyingaroundandthensuddenlyhangingupsidedownfromanobjectoverhead.Howdotheydoit?Agroupofresearchersrecentlyusedvideocamerastofilmbatslandingonnetssuspendedfromtheceilingoftheirlaboratoryandstudiedtherecordingsinslowmotion.Theypaintedspotsonthebats'wingstoseeindetailwhathappenstothewingsinflightandduringtouchdown.Itturnsoutthatthebatsflewinastraightlineuptothenetandthenquicklyflippedoverandattachedthemselvestoitupsidedown.Onedisadvantagetothislandingroutineisthatthebatsoftenslamintotheirlandingspotwithsomeforcewhichprobablycausespain.Howevernotallbatshittheirlandingspotswiththesamespeedandforcethesewillvarydependingontheareawhereabatspeciesmakesitshome.Forexampleacavebatwhichregularlyrestsonahardstoneceilingismorecarefulaboutitslandingpreparationthanabatmoreaccustomedtolandinginleafytreetops. 1Inline1thewordterrestrialisclosestinmeaningto. A.high﹣flying B.fast﹣moving C.tree﹣climbing D.ground﹣living 2Accordingtothepassagewhatskilliscrucialforflyinganimals? A.Divingunderwater. B.Slowingdowntoland. C.Flyingovergreatdistances. D.Balancingonhighbranches. 3Accordingtothepassagewhatisanadvantagethatbatshaveoverbirds? A.Batscanlandonagreatervarietyofsurfaces. B.Batscanturnintheairmorequickly. C.Batscaneatwhileflying. D.Batsarelighter. 4Whatisthemaintopicofthepassage? A.Placeswhereflyinganimalschoosetoland. B.Whyscientistshavedifficultyobservingbats. C.Differencesintheeatinghabitsofbatsandbirds. D.Waysinwhichbatsmovedifferentlyfrombirds.
一项工程平均每天完成它的需要天才能完成．
MeetAlexaYourDigitalRoommate WhoisAlexa?Sheisadigitalassistantthatispartofthevoice﹣activatedEchoDotsmartspeakerproducedbyAmazon.ThisyearSaintLouisUniversityinMissourihasplacedoneofthespeakersineverydormroom1itscampus.StudentscanaskthevirtualassistantanythingfromWhenarethefootballteamsplaying?toWhat'sthesquarerootof1440? SLUstudentBrendanMcGuiresaidInsteadofsearchingontheInternetwhileI2tapawayatmycomputerIcanjustaskAlexaHeyAlexaaskSLUwhat'sthemolecular分子的weightofwater?AndIcanhavetheanswerwithout3interruptmyprocess.That'sexactly4schoolofficialshadinmindwhentheydecidedtoprovidethesmartspeakersfreeofchargeforstudents. Thestudentsweattract5drivetoachievesuccessinandoutoftheclassroomDavidHakansonSLU'svicepresidentsaid.Everyminutewecansaveourstudentsfromhavingtosearchfortheinformationonlineisanotherminute6committotheireducation. SaintLouisUniversityisthefirstintheU.S.7includeanEchoDotsmartspeakerineverycampuslivingspace.Othercollegeshavealsofoundwaystoofferthetechnologytostudents.ThisyearNortheasternUniversityinBostoninstalled60speakersinpublicplaces8studentscouldgetanswerstocommonquestions. AtArizonaStateUniversityengineeringstudentslivinginthebrand﹣newresidencehallhavetheoptionofaddinganAmazonEchoDottotheirrooms.Ourfocusisputtingthistechnologyintothehandsofourstudentsinaway9willbuildanecosystem.10supportsvoicetechnologiesthroughouttheASUcampussaidHerediaadirectoratASU.
这项工程须等到所有的准备工作就绪才能开工这叫按规律办事.which
把一张饼平均分成4份这里单位“1”是一张饼．判断题
A.Makeyourpassionaphysicaltraitofyourpersonality. B.Postyourvisionandplaninyourbedroombathroomoffice. C.Howevertakingtheeasywayofdishonestyhasatendencytosneakbackuponyou. D.Intheprocessadapttoyourneedsbutknowthatsuccesswillultimatelybeyours. E.Evenwithself—disciplineinthelongrunyou'llneedcontactwithspiritualleaders. F.Intheenditcausesfarmoreproblemsthantakingtheriskoftellingthetruth. KickYourWayToSuccess Nomanintheworlddoesnotdesiresuccess.Actuallyeverypathtosuccessstartswithagreatidea.There'sonlyoneproblemgoodideasareeverywhere.Whensuccessfulwhatreallymattersisnothavinganideabuthavingthecouragetomakeitareality.Thisusuallymeanslosingthesenseofsecurityofanormaljobandtheriskofgettingasteadysalary. Evenwithagreatideaandthecouragetopursueityoureffortswillbeworthlessunlessyouarewillingtotakemassiveaction.Writedownyourgoalsandtheactionstepsyouwilltaketopursuethosegoals.1Shareitwithotherssotheywillholdyouaccountableforachievingyourplan.Makeyourselfresponsibleandmasterofyourdestiny. Withoutpassioneventhegreatestvisionwillbecomeweaker.Withoutpassionyourenergyandenthusiasmwillflagwhenyoumeetwithinevitableobstacles.2It'stheforceallowingyoutodevoteeverymomentofyourworkdaytobringyouclosertothesuccessyouareeagerto. Onceyou'vemadeadecisiondoubtisawormthateatsawayatyourabilitytosucceed.Lifeandworkcanbehardandevencruel.Remembertheraceisnotfortheswiftbutratherthosewhopersevere.Ratherthanallowingdoubttoaffectyourprogressyoushouldbeconfidentinyourvisionandplan.3 Theoldsayingsofnooneisanislandandthereisapowerfulmanmaysoundabitoldbuttheydon'tmakethemunreal.4Meetingregularlycanbepositiveandprovidenewperspectivesonyourapproach.TheInternetmakesitveryeasytofindacoachaninstructororaplanninggroupthatcanprovidetheemotionalsupportexperienceandwisdomtohelpturnyourvisionintoreality.
不要运动过度不然有猝死的可能.or
DirectionsReadthefollowingpassage.Summarizethemainideaandthemainpointsofthepassageinnomorethan60words.Useyourownwordsasfaraspossible.Shouldsomebooksbebannedfromschoollibraries?ArethereHarryPotterbooksinyourschoollibrary?ManykidsallovertheworldarereadingJ.K.Rowling'sbooksinschool.Butsomeparentsthinktheirchildrenshouldn'tbeabletofindthoseandotherbooksinschoollibraries.Shouldschoollibrarieskeepbooksthatsomeparentsdon'tapproveof?Shouldtheytakethosebooksofftheshelves?Alloverthecountryschoolsarewrestlingwiththosequestions.It'struethatsomeholdtheirargumentthatsomebooksshouldbebannedfromschoollibraries!'Weneedcertainlimits'saidonestudentinDenverColorado.Hesaidsomebookshavenoplaceinschoollibraries.Manypeoplebelievethatbooksthatcontainviolenceorbadwordsshouldn'tbeinschools.SomepeoplewanttheHarryPotterbooksremovedbecausetheycontaintalkaboutwizardsandmagic.Mostparentsknowwhat'sgoodforkids.Theyhavearighttodecidewhichbooksshouldorshouldnotbeinschoollibraries.Booksshouldmeetcertainstandardsbeforetheyareputinschools.Isthisagoodbookforkidstoread?Isitfullofviolence?Doesitcontainbadwordsorideaskidsshouldn'tlearnabout?Ifabookisnotgoodforallkidsitshouldnotbeinaschoollibrary.Mostparentsdon'thavetimetofindouteverythingtheirkidsread.Theyshouldbeabletotrustschoolstodothatforthem.Ontheotherhandsomebelievethatbooksshouldnotbebannedfromschoollibraries!'Parentsshoulddecidewhattheirownkidsread'saidNatalieNicolofDenverColorado.Butotherparentsshouldn'tmakethatchoiceforthem.Manyexpertssaythatit'stheparents'jobnottheschool'sjobtocheckoutwhattheirkidsarereading.Iftheydon'tlikeabooktheyshouldnotlettheirkidsreadit.WhyshouldafewparentsstopkidsfromreadingstoriesliketheHarryPotterseries?KidsshouldbeabletocheckoutbookstheirparentsthinkareOKtoread.Manyschoolsletkidsborrowcertainbooksiftheyhaveasignedpaperfromaparent.Thatworksfine.Aparentdoesn'tsignthepaperifheorshedoesn'twantthechildtoreadthebook.Otherkidscanreadthebooksiftheyhavepermission.SomebooksarenotOKforallkidstoread.Butifmoreadultswerecarefulaboutwhattheirownkidsreadtheywouldn'thavetobanbooksfromthelibrary.
DirectionsReadthefollowingpassage.Summarizethemainideaandthemainpointsofthepassageinnomorethan60wordsUseyourownwordsasfaraspossible.Peterwokeuponemorningwithalltheusualsignsofanastycoldsevereheadacheandblockednose.Thenhedidwhatalmosteveryonedoesonadaylikethis.Hegotupandwenttowork.Suchisthestateofwhatthehumanresourcesindustryhascometocallpresenteeism.ManyexpertsclaimthatpresenteeismisnowabiggerproblemintheUKthanabsenteeismandcouldevenhelpexplainthecountry'sweakproductivitygrowth.Agrowingnumberofcompaniesarerealizingpresenteeismanddoingsomethingaboutit.Thisgenerallytakestheformofprogrammesfullofonceunimaginablesweetscheapgymmembershipveggiesaladsinthecanteenstand—updesksandtheoddmassage.ofcoursethere'snothingagainstlunchtimedentistryorfreeworkout.Theydomoregoodthanharm.Butsuchwelfaresalonewon'tdomuchtostoppeoplefrompresenteeism.Thechiefreasonswhypeoplesoldieronhavenothingtodowithhowfittheyare.Theyworkforleanermorestressedcompanieswheredismissalsarecommon.Thismakessomepeopleworriedthattheywillbetargetedinthenextroundofjobcutiftheyhavetakenalotoftimeoff.Othersworryabouttroublingstretchedcolleagueswithmoreworkintheirabsence.Howannoyingitistobefacedwithcoldfaceswhenyoureturntoofficeaftertwodays'restathome.Thereisnotmuchtobesaidfor'sillythings'likeping—pongtablesandofficebeanbags.Thekeytodealingwithpresenteeismliesintrainingmanagerstobebetteratspottingswiflywhenemployeesareundertoomuchstressorillanddealingwiththesituationsensibly———puttingthesickemployeetosickleavealthoughheisreluctant.Ofcourseworkhastobedonetoeliminateemployee'sconcernabouthisjobprospectthereof.
在春节期间许多服务行业的企业都面临着用工荒的问题大大阻碍了行业的发展.face
一种盐水盐与水的比是15如果再向其中加入含盐20%的盐水若干那么含盐率将
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