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已知a为常数，且，则的二项展开式中的常数项为 ．
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高三下学期数学《》真题及答案
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若的展开式中第6项的二项式系数最大则展开式中的常数项为.
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若展开式的二项式系数之和为64则展开式的常数项为
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8分Dr.AmandaHarriswasreadyforsleepsinceitwasalready11pm.Thephonerang.Ontheotherendofthelinewasawomanabouttobreakapromise.Thewomanwashermother'sneighbor.FloraHarrishadmadetheneighborswearshewouldn'ttellherdaughtershe'dhadaheartattackandwasinhospital.Theneighborwiselydecidedtodisobeyorders. Amandadesperatelywantedtogettothehospitalimmediatelybutshecouldn't.ShelivesinWashingtonD.C.andhermotherlivesinCalifornia.ForthepastyearandahalfAmandahasgonetoLosAngeleseveryothermonthtotakecareofhermother.FloraHarristakescareofherhusbandJameswho's91andhasAlzheimer'sdisease.Theyliveintheirownhomeandacaregivercomestohelpthemafewhoursaday. AmandaisoneofmanyAmericansfacingtheheartacheofhowtotakecareofagingparentsfromafar.She'softenworriedandguiltynottomentionbusywithademandingjobtwoteenagedaughtersandthefrequenttripstoCalifornia. InsomewaysAmandaislucky.ShehastheresourcestomakethetripstoLosAngeles.Plussheisadoctorwhotreatstheelderly.She'streatedcountlesspatientswhosechildrenlivefaraway. Butit'sstilltoughshesays.Icanforeseewhatthenextfewyearsaregoingtolooklikeandit'snotaprettypicture.Therewillcomeatimewhenmyfatherwon'trecognizemeandIworryhe'sgoingtobeviolentandhurtmymother. Sowhatdoyoudowhenyouliveacontinentawayfromyouragingsickparents?Youcanhiresomeonetohelpbutyoucan'tcountonitcompletely. 1WhyisAmandaworriedandguilty? A.Sheistiredoftakingcareofherhusband. B.ShecannotaffordtogotoCaliforniaoften. C.Shecannottakegoodcareofheragingparents. D.Shehasheartdiseaseandcannotdoademandingjob. 2TheauthorconsidersAmandaluckybecause. A.herparentsarewellcaredbyacaregiver B.shehasexperienceoftreatingtheelderly C.herparentsarenotveryold D.shehasalotoffreetime 3What'soneofthesymptomsofapersonwithAlzheimer'sdisease? A.Havingnosenseofpain. B.Havingheartattacksoften. C.Alwaysfeelingworriedandguilty. D.Beingunabletorecognizerelatives. 4Thewriterwritesthispassageinorderto. A.stresstheimportanceoftendingagingparents B.givesomeadviceontendingagingparentsfromafar C.introducethecurrentsituationofagingparentsintheUSA D.showthedifficultyoftendingagingparentslivingfaraway
10分假定英语课上老师要求同桌之间交换修改作文请你修改你同桌写的以下作文.文中共有10处语言错误每句中最多有两处.每处错误仅涉及一个单词的增加删除或修改. 增加在缺词处加一个漏字符号∧并在其下面写出该加的词. 删除把多余的词用斜线╲划掉. 修改在错的词下划一横线并在该词下面写出修改后的词. 注意1.每处错误及其修改均仅限一词 2.只允许修改10处多者从第11处起不计分. SinceIwasakidI'veconsidereddifferentjobIwouldliketodo.FirstIwantedtobeafiremanwhoseuniformlookedsocoolly.ThenwhenIwasinthefivegradeIwantedtobeateacherbecauseIlikedmyEnglishteachertoomuch.WhenIstudiedchemistryhighschoolIreconsideredmggoalordecidedtobeadoctor.Theyweretworeasonsforthedecision.OnewasthatIwasamazingatthefactthatasickpersoncouldfeelmuchmorebetterafterseeingadoctor.AndtheotheristhatIwantedtohelppeopleinneed.
15分Whenwereadapoem.weoftenimaginewhatthepoets1thinkwhentheywroteorwhattheyweredoingatthetime.Thesethoughtsletusconnectwiththewordsbetterasifwe'dcreatedthepoem2we.Willapoemstillmeanasmuchifacomputewritesit? By3useagorithms算法computerscannowcreateallkindsoftextincludingresearchpapersbooksnewsstoriesandevenpoems.Computer﹣generatedpoemsmightbecorrectinbothgrammarandstyle4somesaytheystilllack5createandtruemeaning. AustralianresearcherOscarSchwartzcreatedawebsite6callbotornot.Onhissiteyoucanreadpoemsandguesswhetherthey7writebyahumanoracomputer.SchwartzrecentlygaveaspeechatTedXSydneyin8hestatedthatsomeofthewebsite'spoemswereableto9foolish65percentofhumanreaders. Hesaidthatonhiswebsitehehopedpeoplewouldquestionthedifferencebetweenhumansand machines一andbeabletoidentifywhatitis10makesushuman.
'Youcanusemeasalastresort选择andifnobodyelsevolunteersthenIwilldoit.'ThiswasanactualreplyfromaparentafterIputoutarequestforvolunteersformykids'lacrosse长曲棍球club.Iguessthatthere'sprobablysomedemandingworkscheduleorsocialanxietyaroundsteppinguptohelpforanunknownsport.Shemayjustneedalittlepersuading.SoItryagainand tugattheheartstrings.ImentionthesingleparentwithfourkidsrunningtheshowandItalkaboutthedadcoachingateamthathiskidsaren'tevenonAtthispointtheunwillingparentspeaksup'Alright.YesI'lldoit.'I'msecretlyrelievedbecauseIknowthere'srealpowerinsharingvolunteerresponsibilitiesamongmany.Theunwillingparentorganizesthemealschedulesendsoutemailsandcollectsmoneyforend﹣of﹣seasongifts.Somewherealongthewaythesameparentendsupbecominganinvaluablememberoftheteam.Thecoachisabletofocusonthekidswhiletheotherparentsarerelievedtobeoffthehookforanotherseason.Handingoutslicedorangestobloodthirstykidscanbeasexcitingaswatchingyourownkidscoreagoal.Stillmostofusvolunteersbreatheasighofreliefwhentheseasoncomestoaclose.ThatreliefiscoupledwithadeepunderstandingofwhythesamepeoplekeepcomingbackformoreConnectingtothecommunity社区asyoufreelygiveyourtimemoneyskillsorservicesprovidesarealjoy.Volunteeringjustfeelssogood.InthatsenseI'mprettysurevolunteeringismoreofaselfishactthanI'dfreelyliketoadmit.HoweverifothersbenefitintheprocessandIgetsomerewardtoodoesitreallymatterwheremymotivationlies?1Whatcanweinferabouttheparentfromherreplyinparagraph1?A.Sheknowslittleabouttheclub.B.Sheisn'tgoodatsports.C.Shejustdoesn'twanttovolunteer.D.She'sunabletomeetherschedule.2Whatdoestheunderlinedphrase'tugattheheartstrings'inparagraph2mean?A.Encourageteamwork.B.Appealtofeelings.C.Promotegooddeeds.D.Provideadvice.3Whatcanwelearnabouttheparentfromparagraph3?A.Shegetsinterestedinlacrosse.B.Sheisproudofherkids.C.She'llworkforanotherseason.D.Shebecomesagoodhelper.4Whydoestheauthorlikedoingvolunteerwork?A.Itgivesherasenseofduty.B.Itmakesherveryhappy.C.Itenableshertoworkhard.D.Itbringshermaterialrewards.
ForthelastfewmonthsIhavegivenupwhatwaspreviouslyoneofmyfavoritefoodsbeef.Eatinglessredmeatandbehealthierbetterfortheenvironmentand﹣surprisinglytome﹣reallyeasytodoso.Sometimesitseemslikemuchofourfoodisstuckinacycleofexcessive过度的productionandexcessiveconsumption. Meatconsumptiontodaycontributestoglobalwarmingandenvironmentaldegradation退化.It'sestimatedthat14.5%ofglobalman﹣madegreenhousegasemission排放comefromlivestock家畜﹣whichismorethanthecontributionfromallformsoftransport.Beefproductionmakesup41%ofthoseemissions.LastyearBrazilreporteda28%increaseinAmazoniandeforestation森林采伐﹣80%ofdeforestedlandinBrazilisthenusedforcattlefarming.Modernbeeffarmingisalsoahugedrain流干onwaterresources. Butitispossibletochange.Reducingmeatconsumptionisagrowingtrenddrivenbyhealthandenvironmentalconsiderations.AswitchtoahealthydietasrecommendedbyHarvardMedicalSchool﹣whichstillincludeseatingmeatfishandeggs﹣wouldreducegreenhousegasemissionsfromfoodproductionby36%.TheNorwegianmilitaryannounceditisswitchingaone﹣daytoaone﹣weekvegetariandietinamoveagainstglobalwarmingwhileevenintheUSconsumptionofred﹣meatisfalling. AndasforyourstrulyIfeelhealthiermoreactiveandbymakingmydietmorevariedIneverfeellikeIammissingoutonanything.Stoppingeatingbeefhasalsohadaknock﹣oneffectontherestofmydietandIameatingless.Cattleandotherlivestockdon'thavetobeenvironmentallyharmful.Grass﹣fedcattleneedmuchsmallerresourceinput.Andasithasbeenshownlivestockifmanagedproperlycanevenrestoredegradedland. InthelongertermasBillGateshighlightedthereisalsogreatpotentialforadvanceinfieldslikesynthetic合成meat.Andthereareothermoresourcesofefficientproteinlikeinsects!Butinaworldwheremorepeoplearenowdyingfromobesitythanmalnutrition营养不良﹣whenhundredsofmillionsofpeoplestilldon'thaveenoughtoeatwecan'tsolvethisproblembysimplycontinuingtomakeconventionalintensivefarmingmoreintensive. 1Whyhastheauthorgivenupeatingbeef? A.Itisbetterforhishealthandglobalwarming. B.Itcanpreventhimfrombeingobesity. C.Itisbetterforbothhealthandenvironment. D.Helikesvegetariandietverymuch. 2Whatresultdoescattlefarmingleadto? A.Thelossofdeforestation. B.Thegreatlossofwaterresources. C.Thelossofman﹣madegreenhouse. D.Thelossoflivestock. 3What'stheauthor'sattitudetowardsraisingsomelivestockinanenvironmentalway? A.Negative. B.Doubtful. C.Favorable. D.Protective 4InBillGates'opinionwecangetefficientproteinby. A.raisingmoreinsects B.raisingmorecattle C.developingman﹣mademeat D.developingintensivefarming
8分Evenplantcanrunafeverespeciallywhenthey'reunderattackbyinsectsordisease.Butunlikehumanplantscanhavetheirtemperaturetakenfrom3000feetawaystraightup.Adecadeagoadoptingtheinfrared红外线scanningtechnologydevelopedformilitarypurposesandothersatellitesphysicistStephenPaleycameupwithaquickwaytotakethetemperatureofcropstodeterminewhichonesareunderstress.Thegoalwastoletfarmersprecisely精确的targetpesticide杀虫剂sprayingratherthanrainpoisononawholefieldwhichalwaysincludesplantsthatdon'thavepestproblems. EvenbetterPaley'sRemoteScanningServicesCompanycoulddetectcropproblemsbeforetheybecamevisibletotheeye.Fixedonaplaneflownat3000feetatnightaninfraredscannermeasuredtheheatsentoutbycrops.Thedataweretransformedintoacolor﹣codedmapshowingwhereplantswererunningfevers.Farmerscouldthenspot﹣sprayusing50to70percentlesspesticidethattheyotherwisewould. ThebadnewsisthatPaley'scompanycloseddownin1984afteronlythreeyears.Farmersresistedthenewtechnologyandlong﹣termsupporterswerehardtofind.Butwiththerenewedconcernaboutpesticidesonproduceandrefinements改进ininfraredscanningPaleyhopestogetbackintooperation.Agricultureexpertshavenodoubtthatthetechnologyworks.Thistechniquecanbeusedon75percentofagriculturallandintheUnitedStatessaysGeorgeOertherofTexasA&MwhorecentlyretiredfromtheDepartmentofAgriculturethinksremoteinfraredcropscanningcouldbeadoptedbytheendofthedecade.ButonlyifPaleyfindsthefinancialsupportwhichhefailedtoobtain10yearsago. 1Plantswillgiveoutanincreasedamountofheatwhentheyare. A.facinganinfraredscanner B.sprayedwithpesticides C.exposedtoextremesunrays D.inpoorphysicalcondition 2Inordertoapplypesticidesprayingpreciselywecanuseinfraredscanningto. A.drawacolor﹣codedmap B.evaluatethedamagetothecrops C.locatetheproblemarea D.measurethesizeoftheaffectedarea 3Theapplicationofinfraredscanningtechnologytoagriculturemetwithsomedifficultiesof. A.thelackofofficialsupport B.itshighcost C.thelackoffinancialsupport D.itsfailuretohelpincreaseproduction 4Infraredscanningtechnologymaybebroughtbackintooperationbecauseof. A.fullsupportfromagriculturalexperts B.theforcefulpromotionbytheDepartmentofAgriculture C.thedesireoffarmerstoimprovethequalityoftheirproduce D.growingconcernabouttheoveruseofpesticidesoncrops
30分It'sabout250milesfromthehillsofwest﹣centralIowatoEhlers'homeinMinnesota.DuringthelongtriphomefollowingaweekendofhuntingEhlers1aboutthesmalldoghehadseen2alongsidetheroad.Hehad3tocoax哄thedogtohimbutfrightenedithad4. BackhomeEhlerswastroubledbythat5dog.SofourdayslaterhecalledhisfriendGregandthetwodrove6.Afteralongandcareful7Gregsawacrossafieldthedogmoving8away.Ehlerseventuallysucceededincoaxingtheanimaltohim.Nervousnessandfearwerereplacedwith9.Itjuststartedlicking舔Ehlers'face. Alocalfarmertoldthemthedogsoundedlikeone10aslostinthelocalpaper.Theadhada11numberforatowninsouthernMichigan.Ehlers12thenumberofJeffandLisatotellthemhehad13theirdog. Jeffhad14inIowabeforeThanksgivingwithhisdogRosiebutthegunshotshadscaredthedogoff.Jeffsearched15forRosieinthenextfourdays. EhlersreturnedtoMinnesotaandthendrove100milestoMinneapolistoputRosieonaflighttoMichigan.It'sgoodtoknowthere'sstillsomeoneouttherewho16enoughtogotothatkindof17saysLisaofEhlers'rescue18. Ifiguredwhoeverlostthedogwasprobablyjustas19toitasIamtomydogssaysEhlers.IfithadbeenmydogI'dhopethatsomebodywouldbe20togothatextramile. 1A.read B.forgot C.thought D.heard 2A.fighting B.trembling C.eating D.sleeping 3A.tried B.agreed C.promised D.regretted 4A.calmeddow B.stoodup C.rolledover D.runoff 5A.injured B.stolen C.lost D.rescued 6A.home B.past C.back D.on 7A.preparation B.explanation C.test D.search 8A.cautiously B.casually C.skillfully D.angrily 9A.surprise B.joy C.hesitation D.anxiety 10A.predicted B.advertised C.believed D.recorded 11A.house B.phone C.street D.car 12A.called B.copied C.counted D.remembered 13A.fed B.adopted C.found D.cured 14A.hunted B.skied C.lived D.worked 15A.onpurpose B.ontime C.inturn D.invain 16A.cares B.sees C.suffers D.learns 17A.place B.trouble C.waste D.extreme 18A.service B.plan C.effort D.team 19A.equal B.allergic C.grateful D.close 20A.suitable B.proud C.wise D.willing
8分Aprettyfaceisneverforgotten.Doyoubelieveso?Butmaybeitisuntrue!Psychologistsbelievebeautifulpeoplearelesslikelytoberecognized.AnewstudysuggeststhatattractivenesscanactuallypreventtherecognitionoffacesunlessaprettyfacehasparticularlydistinctivefeaturessuchasAngelinaJolie's. Germanpsychologiststhinktherecognitionofprettyfacesisdistorted扭曲byemotions.ResearchersHolgerWieseCarolinAltmannandStefanSchweinbergerattheUniversityofJenaGermanydiscoveredinastudythatphotosofunattractivepeopleweremoreeasilyrememberedthanprettyoneswhentheyshowedthemtoagroupofpeople. ForthestudywhichwaspublishedinsciencemagazineNeuropsychologiathepsychologistsshowedphotosoffacestotestsubjects.Halfofthefaceswereconsideredtobemoreattractiveandtheotherhalfaslessattractivebutallofthemwerebeingthoughtofassimilarlydistinctivelooking.Thetestsubjectswereshownthefacesforjustafewsecondstomemorizethemandwereshownthemagainduringthetestsothattheycoulddecideiftheyrecognizedthemornot. Theresearchersweresurprisedbytheresult.UntilnowweassumedthatitwasgenerallyeasiertomemorizefaceswhicharebeingconsideredasattractivejustbecausewepreferlookingatbeautifulfacesDr.Wiesesaid.Butthestudyshowedthatsuchaconnectioncannotbeeasilyproven.Heassumesthatrememberingprettyfacesisdistortedbyemotionalinfluenceswhichenhancethesenseofrecognitionatalatertime.Theresearchers'ideaisbackedupbyevidencefromEEG﹣recordings脑电图记录theyusedduringtheirexperimentwhichshowthebrains'electricactivity. Thestudyalsorevealedthatinthecaseofattractivefacesconsiderablymorefalsepositiveresultsweredetected.Inotherwordspeoplethoughttheyrecognizedafacewithouthavingseenitbefore.Weobviouslytendtobelievethatwerecognizeafacejustbecausewefinditattractive.Dr.Wiesesaid. 1WhatdoweknowaboutthephotosfromParagraph3? A.Theywereallofprettyfaces. B.Theywereselectedatrandom. C.Theywerenotdistinctiveatall. D.Theywereshowedtwicetothetestsubjects. 2Whatdoestheunderlinedphrasefalsepositiveresultsinthelastparagraphmean? A.Peopleactuallyonlyrecognizefewprettyfaces. B.Peoplerecognizemoreuglyfacesthanprettyones. C.Peopleclaimtorecognizeafacetheyhaveneverseen. D.Peoplerecognizefewerfacesthantheyhavethought. 3Whatcanbeinferredfromthenewstudy? A.Peoplearereluctanttorecognizeuglyfaces. B.Beautifulpeopleareparticularlydistinctive. C.Attractivenesspreventstherecognitionoffaces. D.Attractivefacesarealwayseasytoberecognized. 4Whichwordcanshowtheauthor'sattitudetowardsthefindingsoftheresearch? A.Doubtful. B.Disapproving. C.Favorable. D.Objective.
8分TheotherdayIwasshoppingatthelocalChinesegrocerystore.Therewasalineatthefishcounterbutonlyonestaffpersonwastheretotakecareofthecustomers.Somecustomersorderedquiteanamountoffishforthatstaffpersontoworkon.AtlastIwasthesecondinlineallIwantedwasacoupleofcrabsandshouldgetoutofthereinnotime. Noticingitwasverybusyatthefishcounteranotherstaffpersoncameovertohelp.Iwasreadytobeservedbutthestaffpersonwenttotheendofthelineandbegantohelpacoupleofladieswithsnails蜗牛.ThecustomerinfrontofmebeingservedturnedaroundandlookedatmesympatheticallyandthecustomerbehindmecalledtothestaffpersonYoushouldstartherpointingatme.Hewaswellignored. IfsomeoneaskedmeWhatisthemostimportantruletofollowinAmerica?IwouldreplywithouthesitationWaityourturnatalltimes.Whereveryougohereinthiscountryyouwillfindpeoplewaitinginalinequietlytogetanythingwhetherinthesupermarketsdepartmentstoresbusstopsorgasstationsit'sjustamatterofwaitingyourturn.Inalargersensewaityourturnismorethanjustaguideline﹣itisaverybasicnorm准则thatreflectsthefundamentalvalueofthewesterncultures.Butinsomesituationsyourturndoesnotalwayscomebasedonwhenyougetthereandhowlongyouhavewaitedinlinejustlikemycaseatthestore.Eventhoughthisdidnotoftenhappenitdidmakemefeelupset. 1Whathappenedtotheauthoratthestore? A.Hewasn'tserveduponhisorder. B.Hewasill﹣treatedbyacustomer. C.Hewasaskedtobeservedlater. D.Hewasaskedtodoothersafavor. 2Whatistheauthor'sopinionaboutQueuingRule? A.Waituntilbeingserved. B.Servepeopleasonelikes. C.Waituntilyourturncomes. D.Firstcomelaterserved. 3Whatdoestheunderlinedwordthisinthelastparagraphreferto? A.Hisbelief. B.Hisexperience. C.Hisculture. D.Hisrule. 4Whydidtheauthorwritethetext? A.Toemphasizehiskindnesstoothers. B.Tointroducesomewesternculturestous. C.ToshowhisdisbeliefinQueuingRule. D.Toexpresshisbeliefandhisfeeling.
的展开式中的常数项为．
Twodeerjumpedoutinfrontof16﹣year﹣oldAmandaFloyd'scar.Shesteppedonthebrakesoppingthecarjustintime.Butlatershestrtedtexting.Distacted分心的Amandaturnedleftandrightthencrashedintoanothercar.Luckilyshewasn'tinarealcar﹣﹣shewasinadrivingsimulator模拟器atRooseveltHighSchoolOhioUS.IneverreallyrealizedthatcarsmakeaturnthatmuchAmandaaJuniorsaid.Sheaddedthatshewouldn'ttextwhiledrivinganymore. TheOhioDepartmentofTransportationODOTandStateHighwayPatrolbroughtthesimulatortotheschool.Theysaidtheywantedtohelpstudentslearnaboutthedangerofdrivingwhiledrunkwhiletextingorwhiletalkingonthephone. AccordingtotheNationalHighwayTrafficSafetyAdministrationdistacteddrivingchaimed34501ivesin2016alone.Expertsbelievetheactualfigureisprobablyhigher. Thesimulatorisbasicallyacomputerprogram.Likemanycomputergamesitwasahitwiththestudents.Theylinedupandcrowdedaroundtowatcheachothertaketurns.Thesimulatorhasaseringnwhee!方向盘brakeandgaspedal油门踏板.Itismadeupofthreelargecomputerscreensonatable. Studentschooseadistractionsuchasdrivingwhiledrunkortexting.Theyalwayscrashofcourse.Thentheyarepulledoverbythepolicetobetaughtthebadresultsoftheirdrivinghowmuchdamagethey'vecausedwhattheirfineisifanyonediedintheaccidentandifthey'regoingtogotoprison. ItteacheshowtodrivewithoutbeingontheroadsaidShanteThompson16.Shehadjustcrashedintoadeer. ODOTspokesmanJustinChesnicsaidhundredsofkidshavegonebehindthewheelsofar.Hesaidevenmorehavebenefitedfromwatchingtheirclassmates. Drivingissuchamajorresponsibilitysotakeitseriouslyhesaid.Putawayyourcellphone.Alotoftheaccidentsouttherearebecauseofdistracteddriving.Itcannotonlychangeyourlifebutitcanchangesomeoneelse'slifeforever.Theresultsareserious. 1WhatdoestheauthorintendtodoinParagraphOne? A.Introducethetopicofthetext. B.Illustratetheauthor'spointofview. C.Providesomeadviceforthereaders. D.Offersomebackgroundinformation. 2WhyisthedrivingsimulatorprojectintroducedtoRooseveltHighSchool? A.Itteststhestudents'abilitytostayfocused. B.Itgetsstudentstohavefunbetweenclasses. C.Itteachesstudentshowtodealwithtaffecaccidents. D.Itmakesstudentsawareofthedangersofdistracteddriving 3Whatcanweknowaboutthedrivingsimulator? A.Itisconnectedtothelocalpolicestation. B.Itisarealcarbuthaslargecomputerscreens. C.Itatractsthestudents'intrestasacomputerprogram. D.Itbenefitsthestudentswhouseitmorethanthosewhoonlywatch. 4Whatisthemainideaofthepassage? A.TrafficrulesinOhioUS. B.Dangerofdistracteddriving. C.Simulateddrivingforstudents. D.Advantagesofcomputergames.
已知向量＝2﹣1＝m+13m若⊥则||＝
10分HelenKelleroncewroteTheunselfishefforttobringcheertootherswillbethebeginningofahappierlifeforourselves.1TheUNhassetDecember5asInternationalVolunteersDaytogiverecognitiontothesepeople. Nineteen﹣year﹣oldAndrewMakhoulwasacommunicationsmajorattheUniversityofPennsylvania.ItwascominguptospringbreakbutunlikehisclassmatesMakhoulwasn'tplanningonspendingthebreakrelaxing.2 HetraveledtoGuatemala.Hewenttoanorphanage孤儿院inoneofthemostviolentandpoorpartsofGuatemalacity.3Althoughhedidn'tspeakmuchSpanishhefoundcommunicationwasn'taproblemYoucommunicatedwithlove.AndwhathegaveouthegotbackYoucouldseelovewhenyoulookedintheireyes. Makhoul'sfirsttimeasavolunteeronlylastedaweekbutbytheendofthatweekheknewhe'dbebackinthefuture. 4TheUNhighlightedthecaseofPalestinianwomenwhoaresurvivorsofbreastcancer.AspartoftheUN'sAidandHopeProgrammeforPatientCarethewomenhavebeenvolunteeringtheirtimetocreatelow﹣costbreastprosthetics假体tobedistributedtowomenforfreeamongwhomShahdEl﹣Swerkiisabrilliantexample.5Bytheendofhertimetheresheadmiredthesewomenwhoarenotonlysurvivorsbutalsovolunteers. About2400yearsagoGreekphilosopherAristotlesaidTheessence本质oflifeistoserveothersanddogood.Volunteersallaroundtheworldaremakingthesewordscometrueeachandeveryday. A.Itdependsuponvolunteerstostayopen. B.Sheworkedwiththewomenaspartoftheprogramme. C.Herewetelltwovolunteeringstoriesfromaroundtheglobe. D.Sometimesvolunteersthemselveslivewithhugechallenges. E.Hedecidedtospendhistimedoingsomethingusefulforpeople. F.Volunteerswanttodotheirbesttomaketheworldwarmerandmorebeautiful. G.Thesewordscertainlyprovetrueforthemillionsofvolunteersallovertheworld.
Shakespeare'sGlobeExhibition&TourisauniqueinemationalresourcetoexploreShakespeare'swork.Openallyearrounditgivesyouanopportunitytolearnmoreaboutthemostfamousplayright剧作家Sakspeareandhelpsyouseektofuthertheexperinceandinternationalunderstandingofhim. GroupVisitstotheExhibition&Tour *OpeningHours TheatreTours Monday﹣Sunday930a.m.﹣500p.m. Exhibition Monday﹣Sunday900a.m.﹣500p.m. Groupsof15peopleormorearerequiredtopre﹣booktheirvisiandeachgroupwillhaveitsownguideforfree. TomakearservationpleasefllinaGroupRequestFormandreturnittousviaemail. *ExhibitionandTourPrices Adult﹩15.00 Senior60+﹩13.50 StudentwithvalidID﹩11.50 Child5﹣15﹩8.00 ComplimentaryEvery16thpersonfree *Gettinghere Shakespeare'sGlobe21NewGlobeWalkLondonSEl9DTUK Wehavecurentlyimprovedsecuriywithallbagsbeingchecked.Pleaseariveingoodtimeanddonotbringanylargebagsandcheckthecalendarbeforeyourvisitorcall+4402079021500tofindoutaboutourlatestopeningtimes. Visitorsareadvisedtoarrivebypublictransportorbytaxi.ThereisacarparkonThamesExchangeonthenorthsideofSouthwarkBridgeopen24hourssevendaysaweek.CabsmaybefoundallyearroundonSouthwarkBridge.ItmayalsobepossibletopickoneupfromoutsidetheentrancehallonNewGlobeWalk. *Wheretoeat SwanatShakespeare'sGlobeservesmodernBritishseasonalfoodfordinnerafternoonteaordrinksinourbeautifulbarandrestaurantsetovertwofloorsavailableforpre﹣andpost﹣theatredining. SwanRestaurant Monday﹣Friday2noon﹣230p.m.&600p.m.﹣1030p.m. Saturday12noon﹣330p.m.&600p.m. Sunday12noon﹣900p.m. 1Whencanyoupayavisittotheexhibition? A.Fridayat200p.m. B.Mondayat800a.m. C.Saturdayat530p.m. D.Sundayat700p.m. 2Ifagroupof20childrenvisittheExhibition&Tourwhatisrequiredforthemtodo? A.Theyneedtohireaguidethemselves. B.Theymustbeaccompaniedbyanadult. C.Theyhavetopay﹩160forticketsintotal. D.Theyneedtoemailforareservationinadvance. 3Whichoftheflowigapliestovsitors? A.They'reabletogetataxinearSouhwarkBridge. B.TheycanparkonthesouthsideofSouhwanBridge. C.Theyarerequiredtodeposittheirbagsbeforeentering. D.It'smoreconvenienttodrivetherethantakingpublictransport. 4WhatcanweknowaboutSwanRestaurant? A.AfternoonleaisnotservedonSunday. B.ltservesraditionalseasonalfodfordiner. C.Itisclosedfrom3p.m.to5p.m.onworkdays. D.Itservesthreemealsdrinksandaftemoontea.
EXPERIENCECOLUMBIAHOTATTRACTIONS ◆RIVERBANKSZOO&GARDEN Itishometomorethan2000animalsandoneofthenation'smostbeautifulbotanicalgardens.Withmorethan350speciesfromaroundtheworldRiverbanksisoneofthelargestmid﹣sizedzoosinthecountry. Hours900a.m.﹣500p.m.daily AdmissionAdults13﹣61﹣﹩19.95 Children2﹣12﹣﹩16.95 ◆EDVENTURE TheSoutll'slargestchildren'smuseumhas300exhibitstoinspirechildrentoexperiencethejoyoflearning.WhereelsebutEdVenturecanchildrendrivearealfiretruckanchorthenewsorvisitanothercountry? HoursMonday﹣Sunday9a.m.﹣5p.m. AdmissionMembersFree ChildrenandAdults﹩11.95 ◆SOUTHCAROLINASTATEMUSEUM ThestoriesofSouthCarolinacomealivethroughtheexhibitsandcollectionsoftheStateMuseum.Plusanew4﹣Dtheaterprovidespopularmoviesthatexciteallages.Museummembersareinvitedtonight﹣skyobservingandmoreonTuesdaynights! HoursMon.Wed.﹣Fri.10a.m.﹣5p.m. Tues.10a.m.﹣10p.m. Sat.10a.m.﹣6p.m. Sun.Noon﹣5p.m. AdmissionAdults13﹣61﹩8.95 Children3﹣12﹩6.95 ◆SALUDASHOALSPARK SaludaShoalsParkisasensitiveriverfrontparkthatinvitesvisitorstoexperiencethetreasuresoftheSaludaRiverthroughexceptionaleducationalandculturalopportunities. Fun﹣filledFamilyActivitiesNightly!exceptThanksgivingChristmasEveandChristmasnight FreeforactivitiesapplywithHolidayLightsadmission﹩20/car﹩40/15﹣passengervehicle﹩60/bus. 1Whichattractionbestsuitsachildinterestedinbroadcastingnews? A.EdVenture. B.TheStateMuseum. C.SaludaShoalsPark. D.RiverbanksZoo&garden. 2Howmuchshouldayoungcouplewitha4﹣year﹣oldsonpaytoenjoyvariousplantsandanimals? A.﹩24.85. B.﹩20. C.﹩56.85. D.﹩35.85. 3WhichofthefollowingisavailabletoalltouristsintheStateMuseum? A.Havingafantasticvisualfeastatl00p.m. B.VisitingtheexhibitsonSundaymorning. C.Enjoyingfreefamilyactivitieseverynight. D.ObservingtheamazingnightskyonTuesdaynights.
设集合B＝{x|x﹣1＞0}则A∪B＝
10分Itisnotassimpleasopeningthedoorandhittingthetrackinwinter.Thereareafewthingsyoucandotoensureyouaregettingthemostoutofyourrunandimporantlynotdoingmoreharmthangood. Warmupcooldown 1Yourmusclesneedsometimetowarmupwhenit'scoldsotakeiteasywhenyousetoffanddoafewstretches伸展onceyou'refinished. Drinkwater Youmightnotfeelhotbutthat'sbecausesweatevaporates蒸发morequicklyintothechillydryair.Sobesuretodrinkwaterbeforeduringandaftercold﹣weatherworkouts.2Abeltbottleconvenientlyattachestoyourwaistsoyoudon'thavetocarryitandcanhaveadrinkwheneveryoufeellikeit. 3Runningincottonisabadidea.Wearthinbreathablelayersofsynthetic合成的clothingthathelpprotectyoufromthewindandsnowbutstillletoutheatandmoisture水分.Thirtypercentofyourbodyheatescapesthroughyourhandsandfortypercentthroughyourhead.Wearahatorbeanie无边小便帽andglovessoyourcirculatorysystemcandistributewarmbloodtotherestofyourbody.4 Runintothewind 5ObviouslyitwillbeaneasierpassagehomewithsomeextrahelpfromMotherNature.Butmoreimportantlyyouwon'thavethewindinyourfaceforthesecondhalfofyourrunwhenyouaremorelikelytobesweatingandcatchachill. A.Dressright. B.Keepwarm. C.Don'tgotoofasttoosoon. D.Startandfinishinthesameway. E.Don'twaittodrinkwateruntilyoufeelthirsty. F.Headoutintothewindandcomehomewithitatyourback. G.Onreallycolddayswearamaskorscarfoveryourmouthtoprotectyourface.
执行如图所示的程序框图若输入的n＝4则输出的j＝
30分Iusedtohaterunning.ItseemedtoohardandpushingoutsidemycomfortzonewasnotwhatIwas1todo.MyhusbandCharleshadbeenaseriouscompetitive2formanyyears.Afterourmarriagehewouldn't3talkingabouthowmuchhemissedit.SohepickeditupagainandafteraboutayearIstartedto4himatthetrack.JustafewweekslaterCharles5usbothupforafive﹣kilometerrace.I6aboutdoingit.Itwastoosoon. ButonracedaythereIwas.Thegun7.Thousandsofrunnerspushedforward.Thefirstkilometerwastough.Idon'tthinkI'mgonnamakeit.Iwasalreadybreathing8andpainfullyawareofthegroupofrunnerspoundingpastme.Noyou'redoinggreatsaidCharles.Hewastryingtoencouragemetogetmefocusedonsomethingelse9mydiscomfort.Ican'tIsaidbarelyaudibly听得见地.Hetrieda10waytopersuademe.Justmakeittothathouseandlet'sseehowyou11. AfteranotherminuteIsawthethree﹣kilometermark.AllIcouldthinkofwasthatIwasdyingandthatmyhusbandmademe12.Miserabledoesn'tevenbegintodescribehowIfelt.You'llbefine.You'vegotlessthanakilometertogo.Iroundedacornerandsawbothsidesofthestreet13withpeoplewatchingtheraceallcheeringtherunnerson.Iwilledmy14tokeepgoing.ThenIlookedupandsawtheclock.Thesecondstickingawaygaveme15.IknewthatifI16finishedthisraceIwouldachievesomething.17Istraightenedupandkickedit.IhadmyarmsheldhigherwhenIpassedthroughthefinishline.Avolunteer18amedalaroundmyneck. Youdidgreat!I'msoproudofyou!Charleswas19thatI'dmadeit.ThatwasAMAZING!Iwanttodoanotherrace.Thisrunningstuffisamazing!Iproudly20mymedalaswewalkedtothepost﹣racefestivities.Mylungsandmycomfortzonebothexpanded. 1A.accepted B.permitted C.pushed D.raised 2A.runner B.policeman C.doctor D.lawyer 3A.regret B.mind C.stop D.forget 4A.follow B.attend C.join D.urge 5A.signed B.gathered C.involved D.registered 6A.commented B.hesitated C.wondered D.enquired 7A.wentoff B.wentout C.brokeoff D.brokeout 8A.smoothly B.heavily C.quickly D.abruptly 9A.orrather B.morethan C.ratherthan D.betterthan 10A.pleasant B.reasonable C.casual D.different 11A.react B.describe C.feel D.realize 12A.ashamed B.painful C.embarrassed D.nervous 13A.rich B.loose C.ready D.thick 14A.arms B.mind C.heart D.legs 15A.strength B.patience C.expectation D.wisdom 16A.formally B.immediately C.normally D.actually 17A.However B.Therefore C.Yet D.Instead 18A.rewarded B.handed C.put D.presented 19A.thrilled B.amused C.shocked D.frozen 20A.enjoyed B.hugged C.kept D.seized
如图在四棱锥P﹣ABCD中底面ABCD是边长为2的菱形PD⊥平面ABCD∠PAD＝∠DAB＝60°E为AB中点． 1证明PE⊥CD 2求二面角A﹣PE﹣C的余弦值．
8分Bacteriaareanannoyingproblemforastronauts.Themicroorganisms微生物fromourbodiesgrowuncontrollablyonsurfacesoftheInternationalSpaceStationsoastronautsspendhourscleaningthemupeachweek.HowisNASAovercomingthisverytinybigproblem?It'sturningtoabunchofhighschoolkids.Butnotjustanykids.ItisdependingonNASAHUNCHhighschoolclassroomsliketheonescienceteachersGeneGordonandDonnaHimmelbergleadatFairportHighSchoolinFairportNewYork. HUNCHisdesignedtoconnecthighschoolclassroomswithNASAengineers.ForthepasttwoyearsGordon'sstudentshavebeenstudyingwaystokillbacteriainzerogravityandtheythinkthey'reclosetoasolution解决方案.Wedon'tgivethestudentsanybreaks.TheyhavetodoitjustlikeNASAengineerssaysFlorenceGoldaprojectmanager. TherearenotestsGordonsays.Thereisnogradedhomework.Therealmostarenogradesotherthan‘Areyouworkingtowardsyourgoal?'Basicallyit's‘I'vegottoproducethisproductandthenattheendoftheyearpresentittoNASA.'Engineerscomeandreallydoanin﹣personreviewand…it'snotaverynicethingattimes.It'sahardbusinessreviewofyourproduct. GordonsaystheHUNCHprogramhasanimpact影响oncollegeadmissionsandpracticallifeskills.ThesekidsaresoabsorbedintheirstudiesthatIjustsitback.Idon'tteach.Andthatannoyingbacteria?GordonsayshisstudentsareemailingdailywithNASAengineersabouttheproblemreadyingaworkablesolutiontotestinspace. 1WhatdoweknowaboutthebacteriaintheInternationalSpaceStation? A.Theyarehardtogetridof. B.Theyleadtoairpollution. C.Theyappearindifferentforms. D.Theydamagetheinstruments. 2WhatisthepurposeoftheHUNCHprogram? A.Tostrengthenteacher﹣studentrelationships. B.Tosharpenstudents'communicationskills. C.Toallowstudentstoexperiencezerogravity. D.Tolinkspacetechnologywithschooleducation. 3WhatdotheNASAengineersdoforthestudentsintheprogram? A.Checktheirproduct. B.Guideprojectdesigns. C.Adjustworkschedules. D.Gradetheirhomework. 4Whatisthebesttitleforthetext? A.NASATheHomeofAstronauts B.SpaceTheFinalHomeworkFrontier C.NatureAnOutdoorClassroom D.HUNCHACollegeAdmissionReform
30分WhenIwasaboytherewerenosmartphonesorcomputers.StillIneverfeltbored.Thefields1andwoodlandsaroundmyhomeweretheperfectplayground.Icanrememberoncehikingtonearby2andwalkingslowlyaroundit.AtthebackofitIwasamazedtofindanolddirtroadthatIhadneverseenbefore.Itwasfullofmuddytyretracksanddeepwoodsbordereditonbothsidesbut3itstillseemedlikeafineadventure. I4onandonforwhatseemedlikehours.Iwassuremyguardianangel守护天使was5inmyearstoturnaroundand6backhomebutIwas7andevenabitstupidsoIwalkedon.Therewasstillneitheracarnorahouse8.Mylegsweregettingtired.InoticedthatthesunwasstartingtogodownandIgrew9.Ididn'twanttoendup10onthisroadinthedarkofnightandIwasworriedthatitwouldbedark11Icouldmakemywaybacktothelakeagain. Icontinuedtowalkonwiththefeargrowinginsideofme.Myheartwas12fasterandmylegswereachingmoreseriouslythanbefore.WhenI13onelastcornerandsawahousethatI14Ijumpedupanddownandlaughedoutloud.Iknewthewayhome!Itwasstilloveramileawaybutmy15feltlikefeathers.I16intothehousewithabigsmilejustintimefordinner.ThenIendedmyadventurewithagoodnight'ssleep. IrememberedthisrecentlywhenIsawa17sayingAllroadsleadhome.Thisistrue.Ialsorememberedasage圣人comparedlifetoajourney.Arewegoingtomakethislifeaterrible18orarewegoingtomakethelifeajoyfulone?It19ourownchoice. Allroadsnomatterhowtheytwistandturncan20ushomeinourhearts.Mayyoualwayswalkyourpathwithlove!Mayyoualwayshelpyourfellowtravelersalongtheway! 1A.towns B.hills C.farms D.villages 2A.farmhouse B.highway C.forest D.lake 3A.exploring B.appreciating C.introducing D.refusing 4A.drove B.flew C.walked D.rode 5A.waving B.singing C.whispering D.scolding 6A.head B.land C.pace D.wander 7A.sad B.stubborn C.mature D.anxious 8A.inorder B.incomfort C.inneed D.insight 9A.pleased B.scared C.astonished D.disappointed 10A.exposed B.injured C.trapped D.worried 11A.though B.if C.when D.before 12A.blocking B.sinking C.beating D.dancing 13A.turned B.searched C.checked D.examined 14A.owned B.recognized C.overlooked D.defined 15A.arms B.hands C.head D.legs 16A.stormed B.danced C.dragged D.dived 17A.design B.signature C.sign D.signal 18A.trip B.scene C.event D.sight 19A.refersto B.dealswith C.decideson D.dependson 20A.lead B.urge C.move D.transport
在直角坐标系xOy中曲线C的参数方程为α为参数．以坐标原点O为极点x轴正半轴为极轴建立极坐标系已知点A的极坐标为． 1求曲线C的极坐标方程 2过A作曲线C的切线切点为M过O作曲线C的切线切点为N求．
25分假如你是李华是一个京剧迷.你的笔友Mary来信说她对京剧也感兴趣并想了解你对京剧的爱好是如何培养的.请你给她回信内容包括 1.深受父亲的影响 2.喜欢观看京剧表演 3.传承京剧文化. 注意 1.词数100左右. 2.可适当增加细节以使行文连贯. 参考词汇京剧Pekingopera. DearMary Yours LiHua
10分假定英语课上老师要求同桌之间交换修改作文请你修改你同桌写的以下作文.文中共有10处语言错误每句中最多有两处.每处错误仅涉及一个单词的增加删除或修改. 增加在缺词处加一个漏字符号∧并在其下面写出该加的词. 删除把多余的词用斜线\划掉. 修改在错的词下画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. LastMondayIlearnedalessonabouttelllies.EarlyinthemorningIdidn'twanttogototheschoolbutIpretendedtofeelill.MymotherwasveryworryingwhenItoldher.SheleftquicklyandIthoughtshehasgonetowork.Butsoonshecamebackwithabottleofpill.Shesaidthatshehadaskedforadayofffromworktolookme.IfeltalittleguiltybutIdarednottellthetruth.Thatafternoonmyteachercametovisitme.Ifeltsoregretfullyfortellinglies.FinallyIadmittedIhadlainandpromisednevertodothemagain.
25分假设你是李华.你的英国朋友Emily来信说她非常喜欢中国的民族舞并打算最近来中国学习民族舞想请你帮她推荐一位舞蹈老师.请你根据以下要点给她写一封信推荐一位老师. 要点 1.介绍你所推荐的老师 2.推荐该老师的原因 3.祝愿她拜师成功. 注意 1.词数100左右 2.可以适当增加细节以使行文连贯. DearEmily Yours LiHua
2018年“双十一”全网销售额达3143.25亿元相当于全国人均消费225元同比增长23.8%监测参与“双十一”狂欢大促销的22家电商平台有天猫京东苏宁易购网易考拉在内的综合性平台有拼多多等社交电商平台有敦煌网速卖通等出口电商平台．某大学学生社团在本校1000名大一学生中采用男女分层抽样分别随机调查了若干个男生和60个女生的网购消费情况制作出男生的频率分布表直方图部分和女生的茎叶图如下 1请完成频率分布表的三个空格并估计该校男生网购金额的中位数单位元精确到个位． 2若网购为全国人均消费的三倍以上称为“剁手党”估计该校大一学生中的“剁手党”人数为多少从抽样数据中网购不足200元的同学中随机抽取2人发放纪念品则2人都是女生的概率为多少 3用频率估计概率从全市所有高校大一学生中随机调查5人求其中“剁手党”人数的分布列和期望．
已知角θ的顶点与原点重合始边与x轴正半轴重合若Ax3是角θ终边上一点且则x＝
在△ABC中角ABC所对的边分别是abc若a＝1且BC边上的高等于tanA则△ABC的周长的取值范围为
15分 TheCaffeineCatch Caffeineachemicaltypicallyfoundincoffeehascausedalotofconcernbecauseitisoneofthefewdrugsthatshowupregularlyinourfoodsupply.Youprobably1usecaffeinesincechildhood.Caffeine2beinyourfirstCoke.Ifyoueverenjoyedachocolatebaryouatecaffeine.Softdrinksarethemajorsource来源ofcaffeineformostchildrenandevensomeadults.3recentcaffeinehasfounditswayintoorangeappleandotherflavoreddrinks. Smallamountsofcaffeine﹣acup4twoofcoffeeaday﹣seemsafeformostpeople.Howeversomepeoplehavetroublewithevensmallamounts.Onecupofcoffee5thelateafternoonoreveningwillcause6theytostayawakealmostallnight.Largeramountsofcaffeinecancauseaproblem7callcaffeinism.Yougetverynervousandyoucan'tsleep. Itispossible8caffeinemaycausebirthdefects缺陷inhumanstoo.Onestudyshowedthat9womanwhodrankalotofcoffeelikeeightormorecupsperdaywhiletheywerepregnantweremorelikely10havechildrenwithbirthdefects. haveused/was/Recently/or/in/them/called/that/women/tohave
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