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如图所示，固定的水平光滑金属导轨，间距为L，右端接有阻值为R的电阻，处在方向竖直向外、磁感应强度为B的匀强磁场中，质量为m的导体棒与固定弹簧相连，放在导轨上，导轨与导体棒的电阻均可忽略．初始时刻，弹...
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高三下学期物理《》真题及答案
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如图所示两根很长的光滑平行导轨水平放置导轨间距为L.其左端接有电容为C.的电容器和阻值分别为R.和r
如图1所示固定的水平光滑金属导轨间距为L左端接有阻值为R的电阻处在方向垂直纸面向里磁感应强度为B的匀
如图所示相距为L.的两条足够长的光滑平行金属导轨与水平面的夹角为θ上端接有阻值为R.的定值电阻匀强磁
如图所示水平面上有两电阻不计的光滑金属导轨平行固定放置间距d为0.5m右端通过导线与阻值为4Ω的小灯
如图所示固定于水平桌面上的光滑平行金属导轨ABCD处于竖直向下的范围足够大的匀强磁场中导轨间距为L.
如图所示MN为金属杆在竖直平面内贴着光滑金属导轨下滑导轨的间距l=10cm导轨上端接有电阻R=0.5
如图所示间距为d的光滑平行金属导轨水平放置在竖直向上的磁应强度为B的磁场中一端接有阻值为R的电阻一质
如图所示两根平行金属导轨相距L.上端接有直流电源电源电动势为E.内阻为r导轨的倾斜部分与水平面成θ角
如图所示左端接有阻值为R.的电阻一质量m长度L.的金属棒MN放置在导轨上棒的电阻为r整个装置置于竖直
如图所示水平面上有两根电阻不计的光滑金属导轨平行固定放置间距d为0.5m金属导轨右端通过导线与阻值为
如图所示两平行的光滑导轨固定在同一水平面内两导轨间距离为L金属棒ab垂直于导轨金属棒两端与导轨接触
如图所示两根平行金属导轨相距L.上端接有直流电源电源电动势为E.内阻为r导轨的倾斜部分与水平面成θ角
如图所示MN为金属杆在竖直平面内贴着光滑平行金属导轨下滑导轨的间距l＝10cm导轨上端接有电阻R.＝
如图所示两根光滑的足够长直金属导轨曲abcd平行置于竖直面内导轨间距为L.在导轨上端接有阻值为R.的
如图所示空间存在竖直向上的匀强磁场磁感应强度B=0.50T两条光滑的平行金属导轨固定在同一水平面内导
如图所示两条平行且足够长的金属导轨置于磁感应强度为B的匀强磁场中B的方向垂直导轨平面两导轨间距为L左
江苏省镇江市2017高三三模CDEF是水平放置的电阻可忽略的光滑水平金属导轨两导轨距离水平地面高度为
如图所示光滑的平行长直金属导轨置于水平面内间距为L.导轨左端接有阻值为R.的电阻质量为m的导体棒垂直
如图所示两平行的光滑导轨固定在同一水平面内两导轨间距离为L金属棒ab垂直于导轨金属棒两端与导轨接触
如图所示固定位置在同一水平面内的两根平行长直金属导轨的间距为d其右端接有阻值为R.的电阻整个装置处在
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Ifyourlifefeelslikeitislackingthepowerthatyouwantandthemotivationthatyouneedsometimes61youhavetodoisshiftyourpointofview. Yourlifecanbeenhancedandyourhappiness62richwhenyou63choicetochangeyourperspective.Don't64yourfuturetochanceorwaitforthingstogetbettermysteriouslyontheirown.Youmustgointhedirectionofyourhopesandaspirations.Begintobuildyour65confidentandworkthroughproblemsratherthanavoidthem.Rememberthatpowerisnot66necessarytocontroloversituationsbutthe67abletodealwithwhatevercomesyourway. Alwaysbelievethatgoodthingsarepossibleandrememberthatmistakescanbelessonsthatleadto68discover.Takeyourfearandtransformitintotrust;learntoriseaboveanxietyanddoubt.Turnyourworryhoursintoproductivehours.Taketheenergythatyouhavewastedanddirectittowardeveryworthwhileeffortthatyoucanbeinvolvedin. Youwillseebeautifulthingshappenwhenyouallow69toexperiencethejoysoflife.Youwillfindhappinesswhenyouadoptpositivethinkingintoyourdailyroutineandmake70animportantpartofyourworld.
Theholidaysdon'thavetobehardonyourfigure.WeaskedpastwinnersofNBC'sTheBiggestLoserhowtheylosttheirweight. 1.Don'tlettheweatherstopyou. Thewinterwasfrighteningmeaway﹣IwasafraidIwouldn'tbeabletoexercise.SoI'mlearningtoplayicehockey曲棍球!Tokeepyourselfgoingfindthingsthatarefunforyou. ﹣HelenPhillipsseason7 2.Getbackupafteryoufall. Ilost214poundsonTheBiggestLoserbutfinallytheweightstartedtoreturnbecauseIstoppedmakingtheeffort.Ihadtoremember:goingtothegymisnotapunishment﹣it'ssomethingIdobecauseIcareaboutmyself. ﹣ErikChopinseason3 3.Rememberthatageisjustanumber. BeforeIwentontheshowIsatonthesofaandlivedmylifethroughtheTV.NowinadditiontoicehockeyI'vetriedrunningandI'vebecomearunner﹣andI'm50yearsold!Ifyouwanttolosetheweightaskyourself:isitthatIcan'torthatIwon't? ﹣HelenPhillips 4.Setsmallgoalsandcelebratewhenyoureachthem. Ineededgoalsdifferentthingstogoafterinaday﹣adistancethatyoucancoveroraweightgoal.WithoutthemIwasn'tcelebratingmyselfenoughandIgotreallygoodatbeatingmyselfup. ﹣AliVincent 5.Squeeze挤itin. WhenI'minthestoreI'lldolungesupanddownexercise.Inthecheckoutlineyoucoulddosquats.IusedtoworryaboutwhatpeoplethoughtofmebutIdon'tcareanymore.IknowI'mgoingtogetthelastlaugh. ﹣AliVincent 21.Whichofthefollowingpersonsadvisesustogobacktothegymoftenafterlosingweight? A.HelenPhillips B.ErikChopin C.AliVincent D.None 22.AccordingtothepassagewecaninferTheBiggestLoseristo. A.exerciseyourself B.maketheweightoff C.havefun D.playicehockey 23.AliVincentwantstoadvise. A.takingexerciseinwinterdays. B.gettingreallygoodatbeatingyourselfup. C.settingsmallgoalsandcelebratingwhenwesucceed. D.sittingonthecouchandlivingourlifethroughtheTV. 24.Thispassagemostlikelycomesfrom. A.ahealthreport B.anovelonlosingweight C.asciencemagazine D.anewspaper.
假定你是李华你的美国朋友Jack因爸爸过度饮酒而感到非常苦恼就此请你用英语给他写一封邮件.主要内容包括:1.表示安慰;2.给出建议;3.寄予希望. 注意:1.词数100左右;2.可以适当增加细节以使行文流畅;3.开头和结尾已给出不计入总词数. DearJack I'msorrytohearthatyourfatherisaddictedtodrinking. Bestwishes.I'mlookingforwardtoyourreply. Yours LiHua.
已知复数z满足1+i•z＝1﹣i则z的共轭复数＝
Sevenyearsagobackin2010somereportscoveredastorythattheworld'slongestrailwaytunnelwasunderconstructioninSwitzerland.Atthatpointithadalreadybeenunderconstructionforoveradecade.Ithadbeenvotedtobebuiltnearlyaquarterofacenturyago!Theideatobuilditcoulddatebacktonearly70yearsago﹣aboutasoldassomeofyourgrandparents! Yesterdayitwasfinallyready! It's35mileslongandruns7500feetbeneaththeSwissAlpsafamousmountainrangeinSwitzerland.Itevenrunsunderanoldtunnelthatwastherebefore.Ittookatotalof17yearstobuildatacostof$12billion128milliontonsofrockweredug.Twomilliontruckloadsofearthwereremoved! ThetunnelconnectsnorthernandsouthernEurope.TheopeningofthistunnelwassuchabigdealthattheGermany'sleaderChancellorAngelaMerkelFrance'spresidentFrancoisHollandeandItaly'sprimeministerMatteoRenziwerealltheretocelebrateaswasAustria'schancellorChristianKern. It'scalledtheGotthardBaseTunnel.Eventually325freightandpassengertrainswillgothroughthetunnelrelievingalotoftrafficontheroadwaysthereandmakingitamoreenvironmentallyfriendlyoption.TheGotthardBaseTunnelisawonderofengineering!Makeuswanttovisitit! 24.WhendidpeoplefirsthavetheideaofbuildingtheTunnel? A.About70yearsago. B.Halfacenturyago. C.Twentyfiveyearsago. D.Sevenyearsago. 25.WhatcanwelearnabouttheTunnel? A.Itusedtobeanoldtunnel. B.Ithasjustbeencompleted. C.ItconnectsallEuropeancountries. D.Itrunsoverarangeofmountains. 26.WhatmaybethepurposeofbuildingtheTunnel? A.Toimprovetraffic. B.Toincreaseemployment. C.Toattractdonation. D.Tostoppollution. 27.WhatcanbeinferredabouttheTunnel? A.Itwillcauseconflictsamongcountries. B.Itwillbeoflittlebenefittothelocals. C.Itmaydodamagetotheenvironment. D.Itmaybecomeatouristattraction.
WheretoDrink CafeSanBernardo Jointable﹣tennisandpool﹣playingport.CafeSanBernardohasbeenrunningsince1912.TheVillaCrespodivebaralsooffersuptablefootballfor￡4anhour.Serviceisefficient;withlastordersat5am.Thedailyhappyhourbetween6pmand9pmincludes60minutesplayingyourgameofchoiceplusahalf﹣bottleofredwineandacornpiefor￡9. ●AvenueCorrientes5436VillaCrespo541148053956cafesanbernardo.com MSalumeria&Enoteca Tradingonlyinwinewithastorysommelier侍酒师MarianaTortachoosesnewwaysonadailybasisandkeepsalistofaround250labels.There'snowinemenu﹣simplytakeyourbottlefromtheshelf. ●Open11:00am﹣11:30pmElSalvador5777PalermoHollywood541147789016onFacebook NegroCuevadeCafe CoffeehasfounditsplaceinBuenosAires.WhileLAB:TostadoresTheShelterandCoffeeTownarefamousnewplacesNegroCuevadeCafeisoneofthebestdowntown.ItservesEcuadorianColombianandBrazilianbeansanditsattractingcakesincludecroissant. ●Open9:30am﹣7:00pmSuipacha637Microcentro541143223000negrocuevadecafe.com LaCalle HeadtotheNicetoVegaaddressandyou'llbefacedwithapizza.Don'tworryit'stherightplace.LaGuitarritaisthefronttohiddenbarLaCalle.Orderthehousecocktailspecialcandyandpreparetosinguntildawnwithahigh﹣energyyoungcrowd. ●Open8:00pm﹣2:00amNicetoVega4942PalermoSoho541139141972onFacebook 21.Whichnumbershouldyoucallifyouwanttodosomesports? A.541147789016. B.541148553956. C.541143223000. D.541139141972. 22.WhencanyougotoMSalumeria&Enoteca? A.Allday. B.1:00am. C.3:00pm. D.10:00am. 23.WhatmakesLaCalledifferent? AItshavingspecialcandy. B.Itshavingnowinemenu. C.Itsallowingyoutoplaygames. D.Itsopeningforthelongesttime. 24.Whatlstheauthor'spurposeinwritingthetext? A.Toshowwineculture. B.Tointroducesomewinebars. C.Tohelppeoplechoosedrinks. D.Toshowhowtoenjoyyourself.
HowtoSleepBetter Ifyou'rehavingtroublegettinggoodsleepthroughthenightturningwakingupmorethanonceforexamplethistextwilltellyouwhatyoucandotoensureapeacefulnight'ssleep. 1.Getonschedule.Changingyoursleepingtimebymorethananhourcanseverelydisturbyoursleepquality.36Forexampleifyounormallywakeupat6amonweekdaystogettoworkyoumightgotobedaround10pmbecausethat'swhenyoustarttofeelsleepyandit'salsoagoodtimetoensure8hoursofsleep.Ifontheweekendyousleepuntil9amyouprobablywon'tbeabletofallasleepthatnightuntilIam. 2.Bemindfulofwhatyoueatordrinkbeforebed.37Digestionslowsdownwhileasleepandafullstomachmayinterruptsleep.Similarlyyoushouldavoidgoingtobedonanemptystomachasacompletelyemptystomachmayequallydisturbyoursleepingpatterns. 3.38Exposuretolightduringthetimewhenyou'resupposedtobesleepingcandestroyyourbody'sinternalclock.Turnyourlightofforuseaverydim暗淡的nightlight.39TheyincludewindowsLEDclocksandcomputerlights. 4.Changeyoursleepingposition.Youmaythinkthatit'simpossibletocontrolwhatpositionyousleepinsinceyouaren'tfullyawareofwhatyouaredoingbutitispossibleanditcanmakeaconsiderabledifference.40 A.Trytoavoidallsourcesoflight. B.Keeptheroomasdarkaspossible. C.Makenoteofunusualcircumstances. D.Waitatleastthreehoursafterdinnerbeforegoingtosleep. E.Sleepisconsideredtobeadequateonlywhenthereisnodaytimesleepiness. F.Inotherwordssuddenchangeofsleepingtimewillaffectyourbiologicalclock. G.Ifyouwakeupinthemiddleofthenightmakeanefforttohaveacomfortableposition.
Hereisatruestory.Amancameoutofhishometoadmirehisnewtruck.Tohissurprisehisthree﹣year﹣oldsonwashappilyscraping刮theshinypaintofthetruck61useasharpknife.Themanrantohissonanddrovehimaway.62scaretheboyranawayquickly.Unfortunatelytheboyfelldownandhurthisrighthand63seriouswiththeknifestickingintohisfingers.Thefatherrushedhissontothehospitalimmediately. Althoughthedoctortrieddesperately64savetheinjuredfingershefinallyhadtocutthemoff.Whentheboywokeupfromthe65operateheinnocentlysaidDaddyI'msorryaboutyourtruck.ThenheaskedBut66aremyfingersgoingtogrowback?Thefatherbegancryingsadly67hisheaddown. Thinkaboutthisstorythenexttimesomeone68steponyourfeetoryouwishtotakerevenge报仇.Thinkfirstbeforeyouloseyourpatiencewithsomeoneyoulove.Truckscan69repairbutbrokenbonesandhurtfeelingsoftencan't.Toooftenwefailtorecognize70differencebetweenthepersonandtheperformance.Weforgetthatforgivenessisgreaterthanrevenge.
SCIENTISTSstudyit;anincreasingnumberofself﹣helpbookstellusthewaytofindit.InfactthepursuitofhappinesshasbeencalledtheultimategoalinlifebycountlesstalksTVshowsandnewspaperandmagazinecolumns.Howeverhappinessasitwasbeforeisstillhardtofind. USpsychologistEdDienerauthorofHappiness:UnlockingtheMysteriesofPsychologicalWealthmayhavetheanswer:acombinationoflifesatisfactionandhavingmorepositivethannegativeemotions.Howeverthismaysoundstraightforwardenoughbutitstilldoesn'texplainwhatdeterminespeople'shappiness.AndasTheWashingtonPostarguedinanarticleearlierthismonthcreatingadefinitionofhappinessthatistrueforpeoplearoundtheworldcanseemasdifficultasbeinghappy.Forexamplewhoishappier:someonewhohasenoughmoneytobuyanewmobilephoneorsomeonewhohasafamilydinnerafteryearsawayfromhome? Neverthelessasmanysurveyssuggestoneofthemostimportantpartsofhappinessiswealth.TheUN'sWorldHappinessReport2015showsthatcountrieswiththehighestlevelsofhappinessaredevelopedoneswithSwitzerlandIcelandandDenmarkmakingupthetopthree.ButontheotherhandBhutanoneofthepoorestcountriesintheworldwasnamedthehappiestcountryinAsiaandtheeighthhappiestintheworldinresearchbyBusinessWeekin2012. Perhapsthebiggestproblemishowtheideaofhappinessvariesindifferentculturesandlanguages. AsTheWashingtonPostnotedthewordhappycanrefertodifferentthingsinEnglish.Itmightmeanabriefmoodyoufeelwhensomeonesurprisesyouwithagiftoryouthinkoffriendsandfamily.Oritcouldrefertosatisfactionwithyourlife.Butnotalllanguagesrefertohappinessthesameway.InDanishforexamplehappinessisoftentranslatedaslykkeatermthatcandescribeeverydaywell﹣beingthatmightcomefromanicecupofcoffeeorasliceofbreadwithcheese.InChinesethewordforhappinessisxingfuwhichisusedtodescribeagoodlifeandalifewithmeaning.Foragoodmoodhoweverkuaileisusedmoreoften. AnotherdifferenceintheperceptionofhappinessasTheWashingtonPostputitisthatWesterncountriestendtohavequiteanindividualisticviewofhumanlife.InChinaandmanyotherAsiancountriessocialrelationshipswithfamilyinparticularareoneofthemostimportantfactorsinaperson'swell﹣being. Soareyouhappy?Andwhatmakesyouhappy? 32.WhatdoeshappinessinChinesemeanaccordingtothearticle? A.Individualisticviewofhumanlife. B.Everydaywell﹣being. C.Acombinationofsatisfaction. D.Agoodlifewithmeaning. 33.HowdoChinesepeopleandpeoplefromWesterncountriesviewhappinessdifferently? A.WealthisregardedasthemostimportantsourceofhappinessinWesterncountries. B.Socialinteractionplaysamoreimportantroleinaperson'swell﹣beinginWesterncountriesthaninChina. C.Familybondsarebelievedtobecloselyconnectedtoaperson'swell﹣beinginChina. D.ChinesepeoplegetmorehappinessfromtheirpersonalachievementsthanpeoplefromWesterncountriesdo. 34.Howisthearticlemainlydeveloped? A.Bygivingexamples. B.Byanalyzingcauseandeffect. C.Byfollowingtheorderoftime. D.Byaskingandansweringquestions. 35.Whichoneistrueaccordingtothearticle? A.Itishardertofindhappinessthanever. B.Alllanguagesdon'tlookathappinessinthesameway. C.It'ssafetosaythathappinessliesinwealth. D.It'snothardtogiveauniversaldefinitionofhappinessacrosstheworld.
已知P是底面为正三角形的直三棱柱ABC﹣A1B1C1的上底面△A1B1C1的中心作平面BCD⊥AP与棱AA1交于点D．若AA1＝2AB＝2则三棱锥D﹣ABC的体积为．
TeathemosttypicalEnglishdrinkbecameestablishedinBritainbecauseoftheinfluenceofaforeignprincessCatherineofBraganzathequeenofCharlesII.AsaloverofteasinceherchildhoodinPortugalshebroughttea﹣drinkingtotheEnglishroyalcourtandsetatrendforthebeverageinthe17thcentury.ThefashionsoonspreadbeyondthecircleofthenobilitytothemiddleclassesandteabecameapopulardrinkattheLondoncoffeehouseswherepeoplemettodobusinessanddiscusseventsoftheday.ManyemployersservedacupofteatotheirworkersinthemiddleofthemorningthusinventingalastingBritishinstitutiontheteabreak.HoweverdrinkingteainsocialsettingsoutsidetheworkplacewasbeyondthemeansofthemajorityofBritishpeople.Itcamewithahighpricetagandteawastaxedaswell. Around1800theseventhDuchessofBedfordAnneMariabeganthepopularpractice ofafternoonteaaceremonytakingplaceataboutfouro'clock.Untilthenpeopledidnot usuallyeatordrinkanythingbetweenlunchanddinner.Atapproximatelythesametimethe EarlofSandwichpopularizedanewwayofeatingbread﹣inthinsliceswithsomethinglikejamorcucumbersbetweenthem.BeforelongasmallmealattheendoftheafternooninvolvingteaandsandwicheshadbecomepartoftheBritishwayoflife. Asteabecamemuchcheaperduringthe19thcenturyitspopularityspreadrightthroughallcornersoftheBritishsociety.ThusteabecameBritain'sfavoritedrink.Inworking﹣classhouseholdsitwasservedwiththemainmealofthedayeatenwhenworkersreturnedhomeafteraday'slabor.Thismealhasbecomeknownashightea.Todayteacanbedrunkatanytimeofthedayandaccountsforovertwo﹣fifthsofalldrinksconsumedinBritain﹣withtheexceptionofwater. 1Whatismainlydiscussedaboutteainthetext? A.ItsdevelopmentinBritain. B.Itstraditionalwaysofdrinking. C.Itsinfluencearoundtheworld. D.ItspopularityinEurope. 2Whatdoestheunderlinedwordsthebeverageprobablyreferto? A.Teadrinking. B.Asmallmeal. C.Awayofeatingbread. D.Achoiceofdrinks. 3WhywasteaunabletobeacceptedasacommondrinkinBritaininthe17thcentury? A.ItwasmerelyservedinLondon. B.Itwastaxedasanalcoholicdrink. C.Itwasforbiddeninbusinesssettings. D.Itwastooexpensiveformostpeople. 4Howisthetextorganized? A.Bycauseandeffect. B.Bycomparison. C.Intimeorder. D.Infrequencyorder.
你的美国朋友Rose要来中国参加汉语演讲比赛.她对比赛感到非常紧张特意发来电子邮件向你求助.请据此并结合下面的写作提示给她回一封信. 要点:1.赛前如何准备; 2.比赛中的注意事项; 3.祝她好运. DearRose Yourssincerely LiHua.
第一节短文改错 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. StudyingintheUKhavebeenagoodexperienceforme.WhenIfirstarrived.IfindlifeveryhardasIdidn'tknowanybodyhere.butIsoongottoknowotherChinesestudentattheuniversity.LaterIbecameinterestingincommunicatingwithpeoplefromvariousculturesandImadefewerfriends. Duringmystudy.Ichosetoliveinwithmyclassmatesinthedormitory.Ithinkit'sbetterthanlivinginBritishfamilybecauseIcanmeetpeoplefromdifferentcountrieseasy.Thecourseshereareexcellent.Ienjoythewaytheteachersgivelessons.WeareencouragedtothinkforyourselveswhichisquitedifferentfromthatIhaveexperiencedbefore.
DearCarolyn MysisterstepandIgetalonggreat…aslongasourparentsaren'taround.Whenmymomandherdadaretheresheismeaneasilyoffendedeasilyoffensiveandit'sawful. We'vebeentalkingaboutplanningavacationforallofuswithmyyoungsontoDisneyWorldandit'salreadygottencontentious矛盾的.AverylargepartofmewantstosuggestthatwebreakthisupandjustgotoDisneywithmemysisterandmyson.ButifmyparentsgotheywillpayandIcan'treallyaffordtogoonmyown.MysistercoulddefinitelyaffordtopayforallofusbutIdon'tthinkIshouldaskforthat. Anyadvice?ThisissosoobviouslyabadideabutIdon'tknowhowtopullthisoff设法做成withoutlotsofhurtfeelings.IguessIcanjustgowithitandputupwiththeangerinexchangeforafreetriptoDisney?Ugh. ********************************************************************************** Familyvacationdisaster ThemostobviousOption1istobackoutofthetrip.Sayyou'renotcomfortablebeingpaidforandwouldliketopostponeuntilyoucansaveupforit. Option2istobemorestraightforwardwithyoursister:Idon'tknowifyou'venoticedthesamethingbutweseemtogetalongbetterwhentheparentsaren'taround.Butyouhavetobecarefulnottolaytheblameonher. Option3istogoonthetripasplannedbutwithadifferentattitudetowardyoursister.Someonewhoactsthewayyoudescribeisobviouslystressed.Canyouthinkofwhy?Canyoufindempathy感同身受;同感;共鸣? Canyouhelp?Ormaybejustcanyougetawaywhenitgetsbad? EvenifyougowithOption1or3fileaway2foranothertimetheunderlyingtensionbetweenyouthatspoilsyourtimewithyourparentsmustbeaddressed. 25.Fromthefirstletteritcanbeconcludedthatthewriterofthefirstletter. A.can'taffordtogoforatriptoDisneyalone B.isgoingtogoonavacationwithhersister C.hasgreatfunwithherparents D.willgotoDisneywithouthersister 26.FromthesecondletterwelearnthatFamilyvacationdisaster. A.shouldcancelthetripimmediatelyunlessshemakeupwithherparents B.shouldblamehersisterfornotgoingforthetrip C.shouldknowthathersisterisunderstressinfrontoftheirparents D.shouldfindempathywithherparents 27.WhatdoweknowaboutCarolyn? A.CarolynistheonewhowantstogoonatriptoDisney. B.Carolynisacolumnwriterwhohelpspeopleintrouble. C.Carolynisapersonwhoreceiveletter. D.CarolynisaworkerinDisney.
曲线y＝1﹣3aex在点01处的切线方程为
Antsaretroublesomebestknownforitchybitesandruiningpicnics.ButanewspeciesofcrazyantistakingoverTexas.Insomewaystheyappeartobeworsethanfireantsandthere'snogoodwaytostopthem.Theseantsmovefastandareplentifulinsomeareas. ThecrazyantsfirstspranginPearlandin2002andhavebeenbecomingmoreandmoreofaproblemeversince.Aninvasionofthesecanbesoextremethatit'shardtocallitjustanuisanceUniversityofTexasentomologistEdwardLeBruntoldTheAustinAmerican﹣Statesman.Theantshavebeenknowntocrawlintoandruintelevisionsappliancesandotherelectronicdevices.NooneisentirelysurewhyHesaid. DavidOiaresearchentomologistattheDepartmentofAgriculturetoldTheNewYorkTimesin2013thestrangeideathattheantsareactuallyattractedtotheelectricityitselfcan'tberuledout. ThecrazyantsorRaspberryants﹣yepthat'sactuallywhattheyarecalled﹣arefoundin23Texascounties.Theantshaveverylittlevenom毒液butdocauseaslightstingwhentheybite.Mostlythoughthey'reahazardtoelectricalequipment. Theyarearelativelynewspeciesintheregionandlittleisknownabouthowtocontrolorkillthepopulation.Andunfortunatelytheredoesn'tseemtobemuchthatcanbedoneaboutthemrightnow.Soforthemomentthebestadviceisnottostayclosetoantpilesandgroupsandhopethatnonemakeitinsidetocrawlaroundtheelectronics. 28.WhatdotheantsdoinTexas? A.Bitesomepeople. B.Damagelocalcrops. C.Destroyappliances. D.Polluteenvironment. 29.TheunderlinedwordnuisanceinParagraph2isclosestinmeaningto. A.story B.visit C.problem D.failure 30.Whenmeetingwithantpileswe'dbetter. A.killthemall B.controlthem C.drivethemaway D.stayawayfromthem 31.Whatcanweknowfromthetext? A.ThecrazyantsfirstappearedinTexasin2013. B.ThecrazyantscausehugetosstothepeopleinTexas. C.Thegovernmentistakingmeasurestodealwiththeant. D.DavidOiissurewhytheantsruinelectronicdevices.
Meaningfulrelationshipsmakelifemoreenjoyable.Inordertoattractanidealmateyou'llneedtospendsometimepreparingyourselftomakesureyou'rereadytobeinarelationshipwithanewperson. Definewhatanidealrelationshipmeanstoyou.Asyousetouttocreateyouridealrelationshipmakesureyouconsiderwhatyouwantfromit.36Ifyouwantattentionandaffectiontookforsomeonewhogivesyouthat. 37Oftenoneofthebiggestthingsthatcangetinthewayofyourfuturehappinessisyourpast.Inordertomoveforwardinyourlifeyouneedtosaygoodbyetoanythingyoumaybestrugglingwithfromyourpast.Creatinganidealrelationshiprequirescommitmenttothepossibilitiesofthefuturenotbitternessaboutthepast. Bepositive.Noonewantstobearoundsomeonewhoisbad﹣temperedorpessimisticallthetime.38Ifyouwanttofindanidealrelationshiptrytopicturethefutureasfullofopportunities.Nobodyisperfectbutbeingpositiveaboutyourselfandyourlifewillbeattractivetopotentialpartners. Worktowardspositivechangesinyourlife.39Oftenthesecharacterquirks怪癖arewhatmakepeoplelovableandmemorable.Yourfamilyandfriendsshouldloveyouinspiteofyourflaws.40Ofcourseyoushouldn'tchangeyourselfforsomeoneelseunlessitisapositivechangethatyouwanttomakeforyourself. A.Letgoofthepast. B.Everyonehasfaults. C.Welcomeyourfuturechallenges. D.Optimismattractsmoreoptimism. E.Workontalkingthingsoutevenwhenyou'reupsetatoneanother. F.Howevertherearethingsyouneedtoworkontoattractyouridealpartner. G.Ifyouarelookingforstabilityandsecuritysearchforapartnerwiththosequalities.
已知e为自然对数的底则abc的大小关系为
函数fx＝ln|x|ln|x|+1的图象大致为
Andrewwasgoingforasalesjobinterview.Heknewhehadthe61littleexperiencetogetthejob.Infacthewasn'tevensurehowhe'dgottheinterview.62hedidknowwasthathewasverythankfulfortheopportunitygiventohim. Thoughtheinterview63gowellitwasimpressedonhimagainthat64comparewiththeothercandidateshedidn'thavetheabilitytogetthejob.Asheleftthebuildinghegavethereceptionist65envelope.Insidewasathank﹣younotefortheman66hadjustinterviewedhimthankinghimforhistimeandfortheopportunity. ThateveningAndrewgotacall67tellhimthathe'dgotthejob.Hisnewemployerknew68clearthatitwasn'tAndrew'squalificationsthatgothimthejobbuthisthank﹣younote.IfAndrewwasabletobethankfulatthisstagehewouldbeabletobuildpositiverelationshipswithhis69customerwhichwasexactlywhatthecompanywaslooking70.BeinggratefulwonAndrewthejob.
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短文.短文中共有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∧并在此符号下面写出该加的词. 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. LastSundayIwenttothemarketwithmymothertobuysomefreshlyvegetables.Mymotherspentalongtimebargainingbeforeshepaidforvegetablesshehadchosen.Shewantedtogetitatthelowestpricebecauseofshethoughtshecouldsavesomemoneyinthisway.Beforecomingbackshecookedsuchmanydishesthatwecouldn'teatthemall.Sowehadtothrowsomefoodsaway.Asaresultthemoneywewastedwasmuchthanthatsavedfrombargaining.Icouldn'thelpfeelconcerned.Ithinkthebestwaytosavemoneywastostopwasting.
第一节完形填空 Ispentlastsummervolunteeringatahospital.Itwasagiftto41somanyamazingpeopleandI'dliketoshareoneofthesemoments.OnedayIwascalledtoaroomwherean42womanwasstaying.UsuallyIhelpedwith43whowerereadytoleave.Insteadshe44togotothegiftshop.Igota45helpedherintoitandheadeddowntotheentrance. Whenwegotthereitwasn'topenyet.Aftera30﹣minute46weenteredthegiftshop.AsIpushedheraroundIcouldseethe47inherfaceasshelookedateverythinghappytobeoutofherroom.She48somewindowdecorationsandthensawchocolates. Sheaskedmetopushherinthat49andthenIhelpedher50allthedifferentchocolatearrangements.51shedecidedonthreedifferentboxes. Shetoldmetowritethenumbers12and3ontheboxes.She52thatthenursesweretakingsuchgoodcareofhersoshe53chocolatesforeachofthethreeshiftsofnurses.Aswegavethecurrentshiftofnursestheirboxofchocolatethey54offeredsometomebeforetakingsomethemselves. Therewere55allaround.Witnessingtheoldlady's56andgettingtheopportunitytospendtimewithsomeonewhogotsomuchjoyfromlifewasa57initself.Ihavesomanymorestoriesandeachpersonmadeanimpactonmylife.I've58thathealthhasawayofbringingpeopletogether.59isablessingandbeinginaplacewherehealthisso60andappreciatedisunlikeanythingelse. 41.A.introduce B.meet C.attract D.describe 42.A.elderly B.strange C.important D.famous 43.A.nurses B.kids C.patients D.parents 44.A.pretended B.wanted C.failed D.promised 45.A.car B.shoppingcart C.wheelchair D.bike 46.A.ride B.walk C.drive D.wait 47.A.relief B.anxiety C.joy D.puzzle 48.A.chose B.made C.used D.received 49.A.manner B.case C.direction D.point 50.A.preparefor B.makeup C.figureout D.1ookthrough 51.A.Suddenly B.Eventually C.Fortunately D.Actually 52.A.explained B.declared C.expected D.imagined 53.A.exchanged B.designed C.tasted D.bought 54.A.infact B.ataloss C.inturn D.atease 55.A.whispers B.smiles C.shouts D.cheers 56.A.kindness B.choice C.decision D.1oneliness 57.A.1esson B.chance C.gift D.fact 58.A.concluded B.imagined C.predicted D.1earned 59.A.Health B.Luck C.Virtue D.Praise 60.A.tested B.valued C.maintained D.promoted
Peoplewhoseemtohavealltheluckarenotusuallyblessedbyalargeamountofgoodfortune.Theysimplyhaveahealthyattitudewhichenablesthemtomakethemostofsituations.Herearesometipsforcreatingyourownluck. 1.BeGratefulForWhatYouHave. Somepeoplearealreadyluckyandtheyjustdon'knowit.36Forexampleyouhaveahappyfamilysomewonderfulfriendsaroofoveryourheadandfoodonthetable.Byacknowledgingthesethingsregularlyyoucaninstantlyfeelluckier. 2.SeetheGoodinthePast Peoplesometimescomplainabouttheirpastforholdingthemback.Theyblametheirparentsortheirschoolingfornotsettingthemupforsuccess.Buthavingadifficultlifedevelopsstrengthsandqualitiesyoumightneverhavegotifyouhadn'tbeenthroughthosetoughsituations.37 3.BeGenerous Ifyouwantpeopletogiveyouopportunitiesyouhavetoconsiderwhatyoucandoforothers.38Begenerouswithyourtimeandattentionandyou'llbesurprisedhowmanyluckyopportunitiespeoplemayofferyou. 4.BeOpentoNewthings Luckdoesn'tjusthappenuponus﹣itcomestouswhenwe'reopen.39LearningnewskillsvisitinganewplaceortryingaDewhobbyareallgreatwaysofexpandingyouropportunitiesandyourmindset. 5.TakeAction 40Takestepstowardsyourgoalsanddreamsandgreeteverychallengewithapositivemindset.Youwillfindyoucreatemoreluckineverydaylife. A.Youcannotexpecttoreceiveifyounevergive. B.Sobegratefulforthegoodthatcamefromyourpast. C.Manypeoplespendtimethinkingaboutwhattheydon'thave. D.You'llnevercreateanyluckifyousittherewaitingforittocome. E.Tryingsomethingnewisagreatwayofgettingmoreopportunities. F.Butoftensuccesscomesfromgreatdeterminationratherthangoodluck. G.Lookathowluckyyoualreadyareinsteadoffocusingonwhat'slacking.
双曲线的左右焦点分别为F1F2P在双曲线C上且△PF1F2是等腰三角形其周长为22则双曲线C的离心率为
Thetermhelicopterparentsreferstoastyleofparentswhoareoverfocusedontheirchildren. Helicopterparentsarealwaysmakingabigpushtoprovidechildrenwitheveryopportunitytosucceedfrombabystepsatage1homeworkatage8collegeapplicationatage18employmentissuesatage25tofamilyproblemsatage3040orevenolder.Theyconstantlyshadowthechildalwaysdirectinghisbehaviorallowinghimzeroalonetime. Helicopterparentingcandevelopforanumberofreasons.Worriesabouttheeconomythejobmarketandtheworldingeneralcanpushparentstowardtakingmorecontrolovertheirchild'slifeinanattempttoprotectthem.Adultswhofeltunlovedorignoredaschildrencanovercompensatewiththeirownchildren.Whenparentsseeotheroverinvolvedparentsitcancauseasimilarresponse.Theyfeelthatiftheydon'tinvolvethemselvesintheirchildren'slivestheyarebadparents. Themainproblemwithhelicopterparentingisthatitcanbackfire.TogiveanexamplethehousewhereMarylivedwithroommateswasbrokenintoandthingswerestolen.Marycalledthelandlord房东toinstallanalarmsystembutbeforeshecouldfinishthenegotiations协商hermotherrushedinanddemandedaction.Ifeltlikemymotherruinedmycommunicationwithourlandlord.Wecouldhavegottenitdoneourselves.ShewaswellintendedbutonlymademefeelannoyedanddefeatedsaysMary. Obviouslyoverparentingismotivatedwiththeideaofdoinggoodthingsbutitdoestheexactopposite.Inthelongrunparentsareactuallydamagingtheirchild'sbasicskillstodealwithmattersindependently.Itmakesthechildfeellackinginconfidencelesscompetentindealingwiththestressesoflifeontheirown.They'rewinningthebattlebutactuallylosingthewar. 29.What'sthepurposeofhelicopterparents'overparenting? A.Todosomethinggoodfortheirchildren. B.Tomaketheirchildrennotignored. C.Tohelptheirchildrenfindagoodjob. D.Togetridofthepressurefromotherparents. 30.Whatcanwelearnfromthepassage? A.Childrenwhohavehelicopterparentsliveahardlife. B.Helicopterparentingonlyhappenstoveryyoungchildren. C.Helicopterparentscanprotecttheirchildrenagainstallproblems. D.Helicopterparentsdotheirchildrengreatharminthelongrun. 31.Whatwillpossiblybediscussedintheparagraphthatfollows? A.Thebadeffectsofhelicopterparenting. B.Howwecanavoidbeinghelicopterparents. C.Differentopinionsabouthelicopterparenting. D.Thereasonsforthedevelopmentofhelicopterparents. 32.Whatistheauthor'sattitudetowardshelicopterparenting? A.Uninterested. B.Objective. C.Positive. D.Disapproving.
已知两条不同直线ab两个不同平面αβ有如下命题 ①若a∥αb⊂α则a∥b②若a∥αb∥α则a∥b ③若α∥βa⊂α则a∥β④若α∥βa⊂αb⊂β则a∥b 以上命题正确的个数为
MymotherandIneverhadoneofthosenicedressinmatchingmother﹣daughterclothesrelationships.Intheconfuseduncertainmindofateenagerthis41toShedoesn'tcareunderstandorloveme.42Iwasquitesurethatshehadnoideawhatlovewasreallyallabout.43shewasmoppingthefloorscookingmealsandraisingfivechildrenIwaslisteningtothemusicreadingpoetryandexperiencingthe44oflove. Asthewinterofmysixteenyear45thetensionbetweenusgrew.LookingbacknowIrealizethatItookeveryopportunitytolashoutat抨击herinan46tolessenmyowninsecurity.AndthatisexactlywhatIdidwhensheunpackedthatoldgreencoatofhers.Well﹣wornand47IdirectlytoldherthatIcouldnotbelieveshewould48itforanotherseason.ShebegantosaysomethingaboutnothavingthemoneyforanewcoatbutIwasalreadysayingphraseslikeWhenIamolderIwillhaveabeautifulandrich﹣lookingcoat.Iwouldn'tbe49deadwearingaraglikethat. Christmasmorningwasalwaysan50timeinourhouseandthatyearwasnoexception.Thesoundoflaughterkidsyellingandpaperrippingfilledthelivingroom.ThoughItriedtokeepcalmIwas51toseewhatSantahadbrought.Onelargebrightlywrappedboxwithmyname52myattention.Iquicklytoreitopen.InsidewasthemostbeautifulIhadeverseen.Brownsuede绒面革大衣withawhitefurcollaritwasnicerthananythingIhad53dreamtofowning. LookingupIcaughtmymother's54.IthoughtoftheoldgreencoatandinstantlyI55howpreciousthisgiftreallywas.Mymotherknewwhatacoatlikethiswouldmeantomeandshewaswillingto56heroldcoatsothatIcouldhaveit.Hereyesgleamedwithjoyasifitwereshewhohadreceivedtheverybestgift.57thetruemeaningoflovewascleartome. IwishIcouldtellyouourrelationship58changedintoalovingandgivingoneafterthatdaybutthatonlyhappensinthemovies.Westillfoughtandfound59witheachotherbutIalways60aspecialplaceinmyheartwhereIlovedherandIknewthatshelovedme. 41.A.translated B.handed C.awarded D.brought 42.A.Really B.Actually C.Obviously D.Slightly 43.A.Although B.Once C.If D.While 44.A.excitement B.disappointment C.surprise D.satisfaction 45.A.approached B.advanced C.changed D.left 46.A.effect B.effort C.order D.experiment 47.A.outoforder B.outofplace C.outoftime D.outofstyle 48.A.keep B.choose C.wear D.remain 49.A.grasped B.seized C.caught D.held 50.A.satisfactory B.thrilling C.moving D.astonishing 51.A.concerned B.upset C.worried D.anxious 52.A.pushed B.pulled C.drew D.paid 53.A.already B.ever C.even D.still 54.A.eyes B.attention C.head D.coat 55.A.thought B.realized C.admitted D.spotted 56.A.getawaywith B.comeupwith C.makedowith D.catchupwith 57.A.Suddenly B.Finally C.Clearly D.Indeed 58.A.terribly B.beautifully C.wonderfully D.magically 59.A.proof B.mistake C.error D.fault 60.A.carried B.settled C.held D.stayed
假设你是红星中学高三1班学生李华.在高考前剩下的日子里你的朋友Peter想了解你的计划请你给他写一封回信.信的内容包括: 1.你的计划和愿望是什么? 2.你打算如何实现你的愿望. 注意: 1.词数100左右; 2.可以适当增加细节以便行文连贯; 3.短文中不能出现与本人相关的信息. DearPeter Yours LiHua.
ThereareprobablynopeopleonEarthwholiketogossipasmuchastheBritish.Ifpryinginto打探other'sliveswereanOlympicsportthenTeamGBwouldsurelytakethegoldmedal. AndwhentheBritishcan'twatchthelivesofrealpeopletheyhaveanothersourceofentertainmenttofallbackon﹣thesoapopera.BritishsoapoperasareverydifferentfromUSTVdramas.Foronetheyarenormallylongerrunning.ThetwomostpopularCoronationStreetandEast﹣endershavebeenrunningfor48and24yearsrespectively.Botharebroadcastseveraltimesaweeksoremarkablytherehavebeenmorethan7000episodesofCoronationStreet. ThemostobviousdifferenceisthatunlikeUSdramastheBritishsoapoperasfocusontherealworld.Thereislittleglamour魅力thestarsarerarelyrichandtheynormallyhaveboringjobs.Perhapstheappealisthatthelivesofthecharactersoftenmirrorthelivesoftheaudience﹣butwithsomedramaadded.Thismeanstheviewercanrelatetothecharactersandfeelthepainandhappinesstheygothroughontheshow. BecausethesesoapoperaslastfordecadesthecastiseverchangingTheshowsrarelyfocusononeortwomaincharacters.Liketherealworldpeoplecomeandgoallthetime.Howeverthereareexceptions.Street'swilliamRoach76hasplayedtheroleofKenBarlowsincetheveryfirstepisodeoftheshowin1960andheisstillaregular. Thechoiceofwhichsoapoperayoufollowisoftencultural:PeoplefromthenorthofBritishtendtowatchCoronationStreetasitissetinManchester.PeoplefromthesouthgenerallypreferEast﹣enderswhichissetintheeastofLondon.Theshowisgenerallyconsideredgrittierandisaimedatayoungeraudience. 28.WhatisthemaindifferencebetweenAmericandramasandBritishsoapoperas? A.Americandramasarelonger. B.Britishsoapoperasarelonger. C.Americandramasdealwithdangerousthings. D.Britishsoapoperasdealwithrealpeople. 29.WhydoBritishpeopleliketowatchsuchoperas? A.Theycanfindtheirownlifefromtheoperas. B.Theycanenjoytheoperasintheirfreetime. C.Theycanwatchtheoperasformanyyears. D.Theycareaboutthefateofthecharactersintheoperas. 30.Theunderlinedworldepisodesinthe2ndparagraphprobablymeans. A.plays B.pages C.issues D.parts 31.OnecharacteristicofBritishoperasisthat. A.thecharactersplaythesameroleforalongtime B.thecharactersintheplayoftenchange C.peopledon'tknowwhatwillhappennext D.thereisonlyoneortwocharactersinthem.
已知数列{an}的前n项和为Sn满足a1＝1n≥2若则m的最小值为
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