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在同一直角坐标系中，一次函数y＝kx﹣k与反比例函数y＝（k≠0）的图象大致是（ ）
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如图在平面直角坐标系中一次函数y＝kx＋b的图象分别交x轴y轴于A.B.两点与反比例函数y＝的图象交
已知一次函数y1=kx+b与反比例函数y2=kx-1在同一直角坐标系中的图象如图所示则当y1＜y2时
x＜﹣1或0＜x＜3
﹣1＜x＜0或x＞3
﹣1＜x＜0
x＞3
已知一次函数y1=kx+b与反比例函数y2=kx-1在同一直角坐标系中的图象如图所示则当y1＜y2时
x＜﹣1或0＜x＜3
﹣1＜x＜0或x＞3
﹣1＜x＜0
x＞3
一次函数y=ax+ba≠0二次函数y=ax2+bx和反比例函数y=k/x在同一直角坐标系中的图像如图
点的坐标为（－2，0），则下列结论中，正确的是 （ ） A.b=2a+k
a=b+k
a>b>0
a>k>0
在同一平面直角坐标系中若一个反比例函数的图象与一次函数的y＝2x＋6的图象无公共点则这个反比例函数的
如图在平面直角坐标系中一次函数y=kx+bk≠0的图象与反比例函数m≠0的图象相交于A.B.两点.求
在同一直角坐标系中反比例函数的图象与一次函数y=kx+b的图象相交且其中一个交点A的坐标为﹣23若
反比例函数y=与一次函数y=kx﹣k+2在同一直角坐标系中的图象可能是
在同一直角坐标系中一次函数y=kx﹣kk≠0与反比例函数y=k≠0的图象大致是
在平面直角坐标系中反比例函数y=k≠0图象与一次函数y=x+2图象的一个交点为P.且点P.的横坐标为
如图在平面直角坐标系xOy中一次函数y＝kx＋b的图象与反比例函数y＝的图象交于A.23B.－3n两
已知A.15和B.m－2是一次函数y＝kx＋b的图象与反比例函数y＝的图象的两个交点.1求m的值和函
如图在平面直角坐标系中一次函数y=kx+bk≠0的图象与反比例函数y=m≠0的图象交于A.B两点与x
如图在平面直角坐标系xOy中正比例函数y=x的图象与一次函数y=kx－k的图象的交点坐标为A.m2.
如图一次函数y＝ax＋bb≠0二次函数y＝ax2＋bx＋c和反比例函数y＝k≠0在同一直角坐标系中的
点的坐标为（﹣2,0），则下列结论中，正确的是………………………………………………………………………………【 】 A.b＝2a＋k
a＝b＋k
a＞b＞0
a＞k＞0
一次函数y=kx+bk≠0与反比例函数的图象在同一直角坐标系下的大致图象如图所示则kb的取值范围是
k＞0，b＞0
k＜0，b＞0
k＜0，b＜0
k＞0，b＜0
如图在平面直角坐标系xOy中反比例函数y1＝x＞0的图象与一次函数y2＝kx－k的图象的交点为A.m
在同一直角坐标系中一次函数y=kx﹣k与反比例函数y=k≠0的图象大致是
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x＜－1或0＜x＜3
－1＜x＜0或x＞3
－1＜x＜0
x＞3
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It'sabighammertocrackanut.Thisishowoneangryparentdescribedtherecentcrackdown强制措施byLondonpoliceonparentswhodroptheirkidsoffatschoolbycar.Yesyoureadthatcorrectly﹣theverymodeoftransportationthatmanyAmericanschoolsinsististheonlysafewaytodeliverkidstoschoolisnowconsideredillegalintheUK. ThedecisiontofineanyvehiclesseendroppingofforpickingupkidswithinaparticularzoneofeastLondoncomesfromcitycouncilors'议员long﹣termeffortstomaketheareasaferandlesscrowded.Theysaythey'vebeentryingforyearstoencouragereasonableparkingbutinvain.Neighborhoodresidentscomplainfrequentlyabouttheirdrivewaysbeingblockedbyillegallyparkedcarsfor15minutesormoreoftenwhilethey'retryingtogettoworkandthestreetsarelongovercrowded. Nowtheruleshavechanged.Someparentsareangry.Angieisamotherwhomadethebighammercommentandsaysthecrackdowniswayoverthetop.Thenearestdrop﹣offpointforhersix﹣year﹣oldisnowafive﹣minutewalkfromtheschool.Othersarehappywiththedecisionseverethoughitmayseem. CouncilorJasonFrostsaidTraffichasclearlyreducedandmorechildrenarenowwalkingtoschoolwhichisagreatoutcome.Iwouldratherhavecomplaintsthatweareslightlyinconveniencingparentsthanhearthatachildhadbeenseriouslyinjuredbecausenothingwasdone. Iwitnessdailythechaos混乱createdbythesein﹣towndriverswhenIwalkmyownkidstoschool.There'saparkinglotcrowdedwithvehiclesandaslow﹣movingtrainofcarsmovingincirclesmanyfillingtheairwithharmfulsmokes.Meanwhiletheconversationsaroundchildover﹣weightandtheimportanceofdailyphysicalactivitycontinuetostandoutinschools. 1WhyisAngieopposedtothenewrule? A.SheisoftenfinedbyLondonpolice. B.Shewillloseherjobasaschooldriver. C.ShehasadaptedtotheAmericanpractice. D.Shethinksitaddsinconveniencetoherson. 2WhyhasthenewrulebeenmadeaccordingtoJasonFrost? A.Onaccountofmanycomplaints. B.Becauseofheavytrafficjams. C.Owingtosafetyconcern. D.Duetoairpollution. 3Whatcanbeseenafterthecrackdowniscarriedout? A.Lessdailychaos. B.Supportfromallpeople. C.Moreover﹣weightchildren. D.Complaintsfromneighbors. 4Whatisthemainideaofthetext? A.Parentsattempttoresistaschoolrule. B.Londonpolicecausewidespreadanger. C.Americanschoolscaremoreaboutkids'safety. D.Differentvoicesareheardonanewtrafficpolicy.
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复数z=1+i2ii为虚数单位等于
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Whilegettingreadyforschooltodaymy16﹣year﹣olddaughtercameintomyroomtogivemeabighugandkiss.IaskedherWhatdoyouwant?ShesaidNothingMumyoualwaystellustohaveagooddaybeforeweleavethehousebutIwasthinkingaboutwhotellsyoutohaveagooddayandletsyouknowhowmuchyouareloved. Iamsotouchedbythecapacityofloveandunderstanding1comesfrommychildren.My15﹣year﹣oldsonaskedmelastnight2therewasawayforhimtogetasummerjobthisyearinordertohelpustopayourbills.Unfortunatelyinourareahe3be16. 4ofmychildrendependonmesomuchbecauseIamasingleparentbutjustwhenIpaythebillsthatIwillnotbeabletoprovideforthemtheycomeupwithways5helpout.IcompletelyunderstandthatIwillstillhavetofindawaytopaythebillsasIdonotwantmychildrentotakeupanything.Butfornowthefact6theyhavesteppedupandofferedtohelpwithoutanyoneasking7touchme. WhenmydaughterwastwoIrememberrushingtogettoworkgettingtothefrontdoorandaskinghertohurryupandcome.Thensheappearedatthedoor8abagthatshewasholdingopen.IsaidWedon'thavetimeforthis.ShestoppedmeandsaidFillitwithloveMum.Ifelltomykneesandhuggedherandthenkissedher.FromthenonshewouldbringthebagandIwouldbringthelovetothedoorbefore9leaveforschoolandwork.
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WhilemanycountrieslovetheirteaUKcitizensareparticularlyproudofbeingteapeople.TheaverageUKcitizenconsumesnearly2kilogramsofteaeachyear. TeaonlymadeitswaytoEnglandinlargequantitiesinthefirstyearsofthe17thcentury.TeafromChinaandafewotherAsiancountrieswasbeingsoldmorewidelyinEnglandatthattime.Thenteawasgettingmoreandmorepopularamongdifferentsocialclasses. Therearemanyvarietiesoftea.BlackteamixturesarestillthemostcommontypedrunkintheUK.Blackteaisdarkincolourbecausetheleaveshavebeenallowedtooxidize氧化beforedrying.Thisiswhyweusuallyserveitwithmilkalthoughitisnotuncommontodrinkitblackorwithlemon.Youmaystillfindteamadewithloosetealeavesservedupinapotandpouredintothebestchinacupswithsaucers茶托forvisitors. TeaisstillalargepartofdailylifeintheUKtodaybutitseemstobeonthedecrease.TheamountofteasoldintheUKfellbymorethan10%inthefiveyearsleadingupto2002andhasbeendroppingeversince.Teasalesfellby6%in2014aloneandmostrestaurantsreportsellingmorethantwiceasmanycupsofcoffeeastheydotea.Morethan￡1billionwasspentoncoffeeinhighstreetstoresin2013morethantwicewhatwasspentonteabags. Stillwhatgoesaroundcomesaroundit'ssuretobecomefashionableagain. 1Whichofthefollowingistrueaccordingtothefirstthreeparagraphs? A.TeamadeitswaytoEnglandintheearlyyearsofthe16thcentury. B.TheUKusuallyservesblackteawithlemon. C.TeafromChinawasbeingsoldmorewidelyinEnglandnow. D.UKcitizenstakeprideinbeingteapeople. 2Whatcanweinferfromthefourthparagraph? A.Teasalesfellby6%in2014alone. B.Since2002thesalesofteahasbeenonthedecrease C.In2013themoneyspentonteawas￡3billion D.Mostrestaurantlikesellingteathancoffee. 3Whatdoestheunderlinedsentencemeaninthelastparagraph? A.Itcanneversucceedagain B.Theteacanbecomepopularagain C.Coffeeismorepopularthantea D.Theteaisbecominglesspopular 4Whatistheauthor'spurposeinwritingthetext? A.TointroduceteaintheUK B.Toshowtheauthor'spreferencefortea C.Tointroducethefunctionsoftea D.TocompareteainChinaandUK
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JonHoffmanwassittingataredlightwhenhesawamanrunoutofastorecarryingaplasticdonationjarfullofcash.DressedinplainclothesJonHoffmancaughtthemanandpressedhimagainstthehood引擎盖ofhiscar.ButHoffmanhadtroublecontrollingthethiefandtheygotintoastruggle. Thedetectivehasamilitarybackgroundandhesaidhethoughtthesuspectmusthaveamilitarybackgroundtoobecausehewasabletobreakawaysoeasilyalocalpolicespokespersonsaid. Thedetectivecalledoutforhelpasacrowdgathered.AmongthosewatchingwereHarveyandKirbytwodaylaborers. Harveydidwhathasbecomecommonthesedays﹣﹣﹣hetookouthisphonetoshootthevideo.IhatetosayitbutIthoughtthatthispolicemanwasdoingsomethingstupidHarveysaid.ButwhenheaskedforhelpIthoughtwelltherewouldn'tbeshootingifIgotoverthereintime.Harveyjumpedintoactionwhilehewasstillrecordingthevideo.SodidKirby. Harveycaughtholdofthesuspect'sarmswhileKirbyseizedhislegsandtheywereabletogetthesuspecttothegroundtohelpDetectiveHoffmanputthehandcuffs手铐on.saidthepolicespokesperson.The27﹣year﹣oldsuspectwaschargedwithresistingarrestandotheroffenses.Thecharityjarhestoleheldlessthan﹩50. I'vebeenonthewrongsideofthelawseveraltimesinmylifeHarveysaid.Itfeelsgoodtobeonthefightsideanddosomethingpositive. Afterthearrestthethreemengottoknoweachotheratalocalsteakhouse﹣﹣﹣Hoffman'streatasathankyou. 1WhatmadeHoffmancallforhelpwhenarrestingthesuspect? A.Hewasnotonduty. B.Hecouldn'tcontrolthesuspect. C.Heneededwitnessestosupporthim. D.Hewantedtopushthethiefintothecar. 2WhydidHarveyandKirbyrecordthesceneatthebeginning? A.Tofollowthefashion. B.Torecordthedetective'ssillyaction. C.Tokeeptrackofthecriminal. D.Toavoidbeinginvolvedintheincident. 3WhatcanbeinferredaboutHarvey? A.Hewasreadytobreakthelaw. B.Hewasoutofworkatthattime. C.Hehadagoodmilitarybackground. D.Hemighthavehadsomeillegaldeeds. 4WhatisHoffman'sattitudetowardsHarveyandKirby? A.Grateful. B.Prejudiced. C.Skeptical. D.Admirable.
如图所示在水平向右的匀强电场中直细杆倾斜放置一个质量m＝2kgq＝0.1C的带正电小球穿在细杆上．细杆与水平面之间的倾角θ＝37°小球与细杆间的动摩擦因数μ＝0.5从t＝0时刻开始物体运动的与时间t的关系图象所示x为位移t＝2s时撤去电场g＝10m/s2sin37°＝0.6cos37°＝0.8求 1电场强度E的大小 2物体向上运动过程中距计时点的最大距离 3物体由斜面最高点返回计时点的时间．结果可以保留根号
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某超市为了解气温对某产品销售量的影响随机记录了该超市12月份中5天的日销售量y单位千克与该地当日最低气温x单位°C的数据如表所示 1求y关于x的线性回归方程=x+精确到0.001 2判断y与x之间是正相关还是负相关若该地12月份某天的最低气温为6°C请用1中的回归方程预测该超市当日的销售量． 参考公式b==a=-b． 参考数据xiyi=2×12+5×10+7×9+9×8+12×6=281=22+52+72+92+122=303．
已知实数ab满足2a+b=2则4a+2b的最小值为．
Whileresidentsofwealthynationstendtohavegreaterlifesatisfactionnewresearchshowsthatthoselivinginpoorernationsreporthavinggreatermeaninginlife. ThesefindingspublishedinPsychologicalScienceajournaloftheAssociationforPsychologicalsciencesuggestthatmeaninginlifemaybehigherinpoorernations1greaterreligiosity笃信zōng jiāo .Ascountriesbecomericherreligionbecomesless2topeople'slivesandtheyloseasenseofmeaninginlife. Thusfarthewealthofnationshasbeenalmostalways3longevityhealthhappinessorlifesatisfactionexplainspsychologicalscientistShigehiroOishioftheUniversityofVirginia.Giventhatmeaninginlifeisanimportantaspectofoverallwell﹣beingwewantedtolookmorecarefullyatdifferential4correlates相关物andpredictorsformeaninginlife. OishiandcolleagueEdDieneroftheUniversityofIllinoisatUrbana﹣Champaign5lifesatisfactionmeaningandwell﹣beingbyexaminingdatafromthe2007GallupWorldPolla6surveyofover140000participantsfrom132countries.7answeringabasiclifesatisfactionquestionparticipantswereaskedDoyoufeelyourlifehasanimportant8ormeaning?andIsreligionanimportantpartofyourdailylife? Thedatarevealedsomeunexpected9 AmongAmericansthosewhoarehighinlifesatisfactionarealsohighinmeaninginlifesaysOishi.Butwhenwelookedatthesocietallevelofanalysiswefoundacompletely10patternoftheassociationbetweenmeaninginlifeandlifesatisfaction. WhenlookingacrossmanycountriesOishiandDienerfoundthatpeopleinwealthiernationsweremoreeducatedhadfewerchildrenandexpressedmoreindividualisticattitudescomparedtothoseinpoorercountries﹣allfactorsthatwereassociatedwithhigherlifesatisfactionbuta11lowersenseofmeaninginlife. ThedatasuggestthatreligiositymayplayanimportantroleResidentsofwealthiernationswherereligiosityislowerreported12meaninginlifeandhadhighersuicideratesthanpoorercountries. Accordingtotheresearchersreligionmayprovidemeaningtolifetotheextentthatit13peopletoovercomepersonaldifficultyandcopewiththestrugglesofworkingtosurviveinpooreconomicconditions OishiandDienerhopetoreproducethesefindingsusingmorecomprehensivemeasuresofmeaningandreligiosityandareinterestedin14countriesovertimetotrackwhethereconomic15givesrisetolessreligiosityandlessmeaninginlife. 1A.bymeansof B.asaresultof C.forthesakeof D.withregardto 2A.central B.ideal C.formal D.superior 3A.relatedwith B.combinedwith C.associatedwith D.representedwith 4A.models B.styles C.designs D.patterns 5A.investigated B.diagnosed C.explored D.exploited 6A.nationwide B.thorough C.complete D.large﹣scale 7A.Exceptfor B.Insteadof C.Ratherthan D.Inadditionto 8A.opportunity B.temptation C.purpose D.definition 9A.trends B.practices C.outlooks D.currents 10A.precious B.similar C.relevant D.different 11A.exactly B.significantly C.adequately D.partially 12A.better B.less C.more D.fewer 13A.allows B.requests C.reminds D.helps 14A.following B.chasing C.pursuing D.predicting 15A.priority B.profit C.prosperity D.potential
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已知函数fx=x+sinx+1且fa=3则f-a=．
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Iwon'tcallmyselfthemostaccomplishedpersonwhenitcomesto1holdchopsticks.InfactI'mprettysurethatmytechniquelooksclumsyattimes.Itendtohold2Iinthemiddlemorebeginnerthanexpert. StillsinceIeatalmosteverymealwiththeeatingutensil器皿ofchoiceinChinait'snotuncommonforanewfriendoracquaintancetocometoasimple3concludeafterobservingmethatmyChinesehusbandJunmust4showmehowtousethem. Theyarewrong.I'veusedchopstickseversinceIwasateenageratimewhenmysisterandmotherwerebothfondofChinesecuisineandintroducedme5manynewdishesalongwiththe6preferutensilsinChina.Wealwayskeptbamboochopsticksalongwithour7knifeforksandspoonsreadyforwheneverwehappenedtohaveChinesefoodfordinner.Itwasmyclosestfamily8observedmyfirstmistakesImadeinusingchopsticks. PlusIlivedovertwoyearsinChinabeforeJunandIstarteddatingandI9expecttousechopsticksinalmosteveryrestaurantstandandbar.Trustmewhenyou'rehungryyoufigureoutprettyfastwhatittakestodown咽下10mealwiththeseutensils.
已知全集U={013568}集合A={158}B={2}则∁UA∪B=
“∵四边形ABCD为矩形∴四边形ABCD的对角线相等”补充以上推理的大前提为
下列说法正确的是
Low﹣CostGiftsforMother'sDay GiftNo.I Offertobeyourmother'shealthfriend.Promisetobethereforanyandalldoctor'svisitswhetheradiseaseoraregularmedicalcheck﹣up.Mostmothersalwayssaynoneedbutanothersetofeyesandearsisalwaysagoodideaatadoctor'svisit.Thebestpart?Thisoneisfree. GiftNo.2 Helpyourmotherorganizeallofhermedicalrecordswhichincludethetestresultsandmedicalinformation.Putthemallinoneplace.Besuretomakealistofallofhermedicinesandwhattimesshetakesthem.Havingallthisinformationinoneplacecouldendupsavingyourmother'slifeDr.MarieSavardsaid. GiftNo.3 Enoughsleepisconnectedtogeneralhealthconditions.BuyyourmothercottonsheetsandcomfortablepillowstoencouragebettersleepSavardsaid.Weknowthatgoodsleepisveryimportanttoourhealth. GiftNo.4 SomegiftcompaniessuchasPresentsforPurposeallowyoutopayitforwardthisMother'sDaybypickinggiftsinwhich10percentofthepriceyoupaygoestoacharity慈善机构.Giftgiverscanchoosefromawidevarietyofusefulbutinexpensivethings﹣manyofwhicharegreen﹣andthenchooseameaningfulcharityfromalist.Whenyourmothergetsthegiftshewillbetoldthatshehashelpedthechosencharity. 1Whatareyouadvisedtodoforyourmotheratdoctor'svisits? A.Givehergifts. B.Buymedicine. C.Bewithher. D.Takenotes. 2Whatcanbeagiftoforganizationforyourmother? A.Keepinghermedicalinformationtogether. B.Buyingallgiftsforherfromonecompany. C.Makingalistofhermedicalcheck﹣ups. D.Storinghermedicinesinasafeplace. 3BuyinggiftsfromPresentsforPurposeallowsmothersto A.bewell﹣organized B.enjoygoodsleep C.giveothershelp D.getextrasupport
已知全集U=R．集合A={x|1≤x≤3}集合B={x|3x＞9}． 1求∁UB∪A 2若集合C={x|a＜x≤a+1}且集合A与集合C满足C∩A=C求实数a的取值范围．
已知函数fx是定义域为[-33]的奇函数当-3≤x≤0时fx=x2-2x那么不等式fx+1＞f3-2x的解集
观察下列各式a+b=1a2+b2=3a3+b3=4a4+b4=7a5+b5=11…则a7+b7=
FromchildhoodMoiralovedtowrite.Throughoutschoolshe1writingbutpursuing追求it2wasneverapossibility.Herfatherwasadoctorhermotheranurse.Medicinewasafairly3choiceMoirasaysAndwritingwasacareerwhereitwasn'ta4thatyou'dhavehighincome. Shebecameadoctorbutstillwantedtodosomewriting.Howeverbeingadoctorwasso5thatshedidn'ttakeupwritinguntilherthirties.She6anovel﹣afictionalizedversionofhertravelinChinaafteruniversity.Shegotexcellent7.Moirasentitoffasmanyagentsasshecouldfindandfoundonewhowantedto8her.Suddenlyitseemedshewasonher9asanauthor. Ihadonelengthyphonecallwiththeagentwherewe10allpossibleareasshethoughtneeded11.Iworkedonthoseandsentitbacktoherbutdidn'thearanything.Itwasn'tlong12Moirafoundanotheragentwhowas13ifshewaswillingtorewriteitfromthefirstpersontothethirdperson.Shedidthehardworkandsentitoffagain.Igotbackareallybriefletter‘ThankyouI'mnolongerinterested.'Itwasreally14. AdecadewentbyandMoirafoundherselfeagertowriteagainthistime15forherownenjoyment.She16herselfthechallengeofcreatingathrillerandchoseWesternAustraliaashersetting. Asshewaswritingjustforherselfsomethingsurprisingbegantohappen.Thecharacters17alifeoftheirowntheystarteddoingthingsIhadn'tthoughtabout.Itjust18out.OnedayanagentcalledfromAustralia.ThreeweekslaterMoirahadapublicationdeal.HernovelCicadawaspublishedinMarch. 19ithadn'tbeenpublishedIstillgainedsomuchfromthe20saysMoira. 1A.learnt B.avoided C.considered D.enjoyed 2A.actively B.professionally C.energetically D.permanently 3A.influential B.clear C.terrible D.safe 4A.dream B.purpose C.choice D.certainty 5A.promising B.discouraging C.demanding D.interesting 6A.produced B.introduced C.bought D.received 7A.rewards B.readers C.reviews D.praises 8A.employ B.represent C.trust D.guide 9A.own B.feet C.way D.business 10A.tookoff B.wentthrough C.pulleddown D.cameover 11A.deleting B.adapting C.polishing D.covering 12A.before B.after C.since D.when 13A.fascinated B.interested C.anxious D.amused 14A.common B.absurd C.terrifying D.disappointing 15A.purely B.wonderfully C.instantly D.sadly 16A.set B.found C.made D.permitted 17A.putup B.tookon C.wentover D.gotdown 18A.flew B.brought C.broke D.carried 19A.Eversince B.Asif C.Ifonly D.Evenif 20A.adventure B.practice C.process D.result
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