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双曲线M:﹣=1(a>0,b>0)的虚轴长为2,离心率为,则过P(0,1)点且与双曲线M相切的直线l的方程为( )
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高二上学期数学《》真题及答案
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设双曲线的虚轴长为2焦距是则双曲线的离心率为.
1求双曲线9x2-25y2=225的实轴长虚轴长焦点坐标准线方程渐近线方程离心率.2设直线y=ax+
双曲线的焦点在x轴上虚轴长为12离心率为则双曲线的标准方程为____________________
已知双曲线-=1a>0b>0AC分别是双曲线虚轴的上下端点BF分别是双曲线的左顶点和左焦点.若双曲线
已知双曲线的实轴长虚轴长焦距长成等差数列则双曲线的离心率e为
2
3
已知双曲线=1a>0b>0的虚轴长为2离心率为F.1F.2为双曲线的两个焦点.1求双曲线的方程2若双
已知双曲线-=1a>0b>0的离心率e=若顶点到渐近线的距离为1则此双曲线的虚轴长为
2
4
已知双曲线-=1a>0b>0与抛物线y2=2pxp>0的交点为
,
,A.,B.连线经过抛物线的焦点F.,且线段AB的长等于双曲线的虚轴长,则双曲线的离心率为( ) A.
B.2
3
+1
若F1F2为双曲线a>0b>0的左右焦点O.为坐标原点户为双曲线的左支上的点点M.在右准线上且满足.
若双曲线﹣=1a>0b>0的实轴长为4离心率为2则该双曲线的虚轴长为
4
4
2
2
若双曲线﹣=1a>0b>0的实轴长为4离心率为2则该双曲线的虚轴长为
4
4
2
2
已知双曲线的焦点在x轴上两个顶点间的距离为2焦点到渐近线的距离为.1求双曲线的标准方程2写出双曲线的
已知F.是双曲线C.:-=1a>0b>0的左焦点B1B2是双曲线的虚轴M是OB1的中点过F.M.的直
双曲线方程为则实轴长为虚轴长为焦点坐标为离心率为渐近线方程为.
已知双曲线的焦点在x轴上两个顶点间的距离为2焦点到渐近线的距离为.1求双曲线的标准方程2写出双曲线的
双曲线x2﹣my2=1m>0的实轴长是虚轴长的2倍则m的值为.
已知离心率为的椭圆的中心在原点焦点在x轴上.双曲线以椭圆的长轴为实轴短轴为虚轴且焦距为2.求椭圆及双
双曲线的离心率为2则双曲线的虚轴长为.
若双曲线的焦点在x轴上虚轴长为12离心率为则双曲线的标准方程为.
若双曲线﹣=1a>0b>0的实轴长为4离心率为2则该双曲线的虚轴长为
4
4
2
2
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Reynoldshadjustturnedsevenandhaddevelopedherownuniqueidentityasatomboy.MostgirlsheragewantedtoplaywithBarbiedollswhileshepreferred1hairandjeans.Andshehopedtobecomeaprofessionaldirtbikerider.HermotherAlexandriawasabit2becausesheknewthatsomekidscouldbemeantostudentswithdifferentcharacteristics.ButsheandherhusbandgaveReynoldsadirtbikeasa3gift!They4herinterest. ForReynoldsschoolhadbecomeareal5especiallyaftershetoldeveryonethatshehadgotadirtbikeforherbirthday.Itdidn'ttakelongforsomeofher6tovoicetheiropinions.Astimewentonshewas7constantly. Reynolds'parentsraisedtheirkidstobe8andindependent.Theywere9thatReynoldscouldhandlethesituationonherown.Andthat'sexactlywhatshedid.Shesimply10allthenegativitybehindandkeptongoingaboutherday.But11herbreakingpointgrewcloser.Reynolds12tosetfootinschool.Alexandriadecidedto13upwithaplan. Alexandriaarrangedtohaveabikergroup14Reynoldstoschoolthatday.They15somepolicemen.Youcanimaginehow16Reynoldswastohermom.Theymadeatinyvestandhelmetforhertowear.Whenthegrouppulleduptotheschoolherclassmateswereamazed.Suddenlyeverything17.Herclassmateshadawholenew18forherincludingthemeankidswhohadlaughedather.Thisallowedherinnerhappinessto19. Reynolds20totheworldthatweshouldneverbeafraidtobewhoweareorallowotherstocontrolusthroughfear. 1A.long B.short C.beautiful D.soft 2A.excited B.annoyed C.worried D.ashamed 3A.Christmas B.NewYear C.graduation D.birthday 4A.encouraged B.developed C.reminded D.declared 5A.comfort B.challenge C.support D.dream 6A.neighbors B.friends C.teachers D.classmates 7A.envied B.cheated C.teased D.defeated 8A.generous B.cautious C.tough D.gentle 9A.proud B.confident C.satisfied D.surprised 10A.left B.followed C.turned D.pull 11A.luckily B.hopefully C.directly D.eventually 12A.decided B.begged C.agreed D.refused 13A.put B.come C.catch D.team 14A.welcome B.drive C.accompany D.push 15A.included B.accepted C.introduced D.employed 16A.regretful B.fearful C.grateful D.helpful 17A.changed B.happened C.came D.broke 18A.respect B.concern C.trust D.anger 19A.disappear B.fade C.hide D.return 20A.explained B.proved C.lied D.announced
ThegymwhereMontgomeryCountySpecialOlympicswasholdingitseighthyearlyshowofunified联合的basketballatBlessedSacramentSchoolwasfilledwithcheerleaders啦啦队队员parentsandfriends.Thewallswerecoveredwithpostersmadebythird﹣and﹣fourth﹣gradersattheschool.Andalltheelementarymiddleandhighschoolunifiedteamswereplayinghardandhavingfun.Everybasketnomatterwhichteamscoresischeeredandcelebrated. SpecialOlympicssupportmorethan20unifiedgames.Whatareunifiedgames?Theyareprogramsdesignedforplayerswithspecialneeds.Inthegamestheyplaywithkidswhoarevolunteerscalledunifiedpartners.Thespecialathletesareunabletoplaynormallylikeotherhealthykidsandsomeofthemarewheelchairusers.Inbasketballtheunifiedpartnersrebound抢得篮板球passandsometimespushaspecialathlete'swheelchair.AsBrianRossaseventh﹣graderatSt.AlbansSchoolinWashingtonsaysYoujusttrytohelpandgeteveryonetotakepart. Somespecialathleteshavecomealongwaytobewheretheyare.CalebHeadisa15﹣year﹣oldspecialathlete.WhenhestartedCalebwouldonlystandatthedoorandwatch.ThenCalebbegantopracticehisshootingbutstillwouldnotplayinthegames.NowCalebrunsupanddownlookingforhisshot. Thespecialathletesarenottheonlyoneswhobenefitfromunifiedsportstheunifiedpartnersdotoo.MarlaGrusinwhosesonTylerisaspecialathletesayseverykidshouldcometoaSpecialOlympicsgame.Iftheydotheywilllearntosharetheballandthatthegameisnotallaboutme. Notabadlessonforanyathlete. 1Thefirstparagraphisabout. A.themeaningofunifiedgames B.anexcitingunifiedbasketballgame C.thebenefitsofplayingbasketball D.SpecialOlympics'development 2SpecialOlympicsareespeciallyheldforstudentswho. A.knowlittleaboutballgames B.lovecheerleading C.aredisabled D.wanttobecomeastarplayer 3AccordingtothetextBrianRossismostprobably. A..aunifiedpartner B.aspecialathlete C.acheerleader D.abasketballteacher 4AccordingtoGrusintakingpartinSpecialOlympicsgamescanhelpchildren. A.learnbasicbasketballskills B.getbettergrades. C.improvetheirhealth D.becomemoreselfless
AsofTuesdayChineseboxofficehitWolfWarrior2hasearnedmorethan3.4billionyuan﹩507million1breakChina'sall﹣timeboxofficerecordwhich2setlastyearbyHongKongcomedyTheMermaid. TheleadingcharacterisLengFengplayedbyWuJingthefilm'swriteranddirector.Lengisa3fearformerspecialforcessoldierofthePeople'sLiberationArmy.Duringamilitaryrebellion反叛in4AfricancountryLengalmostsingle﹣handedlyhelpsChineseworkersandAfricanlocalsescapethewar﹣tornnation.Butthefightingscenesalonedon'texplainthemovie's5succeed﹣﹣it'salsothepatriotism爱国主义andspiritofthefilmprojects6haveimpressedChineseaudiences. TongYemenga32﹣year﹣oldofficeworkerfromBeijingIfeltsoproudof7IcountrywhenIsawWuJingwavingthenationalflaginthewarzoneshesaid.Itshowedour8increasenationalpower. Themovie'spatrioticreactioncanbeattributedtoitstiming.WolfWarrior2hitcinemasasIndiaandChinawereinvolved9aborderdisputeasthecentralgovernmentispromotingitsinternationalBeltandRoadInitiative倡议10asthePeople'sLiberationArmycelebratedits90thanniversary.
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WhenIwaseightIgotmyfirstpairofglasses.FarfrombeingmadefunofatschooltheonlystruggleIgotwasendlessrequeststotryonmynewglasses.HearingaboutwhathappenedatschoolmyfatheroncelookedatmeandaskedwhetherIhadpretendedtobetheblindnessjusttolooklikeHarryPotter? WithmystrangehairandglassesIdidnothingtoavoiditeither.TheHarryPotterbookswerethegreatpopculturaleventofmygenerationwhobeganreadingagain.MyschoollibrarianbothconfusedandannoyedbyusPotterfansdealtwithfightsovertheschoolsfewoldcopiesbysettinganewruleHarryPottercouldbeborrowedforonlythreedaysinsteadofthewholeweekofborrowingperiodeveryothertitlewasallowed. Inthe20yearssincethefirstbookarrivedonshelvespublishersandparentshavebeenaskingwhathasmadeJ.K.Rowling'sbookssoloved.Itisbettertolookattheinfluencetheyhavehadontheirreaders.Yesthebookswereaboutaboytakingonadarkandpowerfulenemyinthemagicalworldbuttheywerealsoaboutlovedefeatinghatedeterminationandchoosingbetweenwhatiseasyandwhatisright.Rowling'sentiremagicalcharacterswereallpeoplewewanttobe. IgrewupwithHarryandtogetherwebecamechildrenwithourownopinionsteenseasytogetangryandyoungadultsthinkingofeverythingasnormal.Whenthefinalbookcameoutin2007.Ireaditfor12hourswithoutabreakandcriedasIfinishedit.IfeltsomethingsadtheendofHarry'sstorysignaledtheendofmychildhood.Iwassuddenlyaimless.MeanwhilemynowPotter﹣madfatherwalkedimpatientlynearbywaitingforthepropermomenttotakethebookawayfromhisdaughter. HarryPotterdidshapemygeneration.AsagirlwhogrewupmostlyinpeacetimemanyoftheideasIfoundinthesebookswereoneswehadnevercomeacrossbefore.Themagicalworld'sterribletreatmentofnon﹣humanbeingswasthefirstdescriptionofslaveryIknew.ThetreatmentofHarry'steacherRemusLupinwhohideshisconditionatworkisametaphor比喻fortheshamesurroundingthosewhosufferfromAIDS.Andallsettingslikethismayhavereal﹣worldreflections.AstudyfoundthatteenageHarryPotterreadersshowedmoretolerance包容towardsthosewhoweresuffering.IsitpossiblethatJeremyCorbyn'spopularityamongtheyounghadanythingtodowiththeirliteraryeducation?IsitpossiblethatHarryPotterinthe20yearshehasbeenwithushasinspiredagenerationtobemoreempathetic感同身受welcomingandsociallyopen﹣mindedthanthosebeforeit?WewillseeIfnotatleastmyglassesarestillcool. 1Paragraph1isintendedtoshow. A.theauthorssufferingscausedbytheglasses B.theauthorscloserelationswithotherstudents C.themisunderstandingbetweentheauthorandherfather D.thepopularityofHarryPorteramongstudents 2HowdidtheschoollibrarianstopthefightsbetweenPotterfans? A.BypreventingPotterfansborrowingHarryPottermanytimes B.BysellingtheHarryPorterbooksinthelibrary. C.BycreatinganewruleforHarryPotter'sborrowingperiod. D.BybuyingmoreHarryPotterbooksforthelibrary. 3WhatcanwelearnabouttheHarryPotterbooksfromParagraph3? A.Thebookhasbeenthemostpopularoneamongallthebooksfortwentyyears. B.Itisthestoryofrevenge复仇inthemagicalworldthatmakesthebookpopular. C.Readersarecrazyaboutthebookbecauseithastaughtthemhowtoloveandmakewisechoices. D.Thebookhashadsuchgreatinfluenceonthereadersthattheyallwanttobemagicalpersons. 4WhydidtheauthorcrywhenshereadHarryPotterthatcameoutin2007? A.BecauseshesuddenlyfoundthatshewastoooldtoreadHarryPotter. B.Becauseherfatherwasforachancetotakeherbookaway. C.Becauseshehadnoplanforwhattodoafterherchildhoodended. D.Becauseshewastoosadtoknowthe2007bookwasthelastHarryPotterbook. 5TheunderlinedwordsignaledinParagraph4isclosestinmeaningto. A.described B.created C.changed D.marked 6What'sthelastparagraphmainlyabout? A.HarryPotterhasgreateffectsontheauthor'sgeneration. B.ThecharactersinHarryPorterwerecreatedthroughgreatimagination. C.ComparedwithotherpeopleHarryPotterreadersaremoretolerant. D.ReadingHarryPotterisimportantforchildrenlivinginpeacetime.
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Thereisnopoint使确信himofTina'shonestybecausehejustdoesn'tbelieveinanypersoninthecompany.
Manyofushavesomeoneinourlivesthathasabsolutelyeverything.Buyingagiftforthatspecialpersoncanprovequitestressful.Hereareafewpointsaimedatmakingthischallengealittlebiteasier. Buyingthathard﹣to﹣findgiftcanhaveyouwanderingthemallsforhoursonendwithlittleornoluck.Beforestartingsuchashoppingjourneythinkcarefullyaboutwhatthatpersonmightreallyenjoyinsteadofhopingtheperfectgiftwillmiraculously奇迹般地appear.ThinkaboutwhatishappeningintheirlivesatthemomentHavetheyrecentlyexperiencedamajorlifeevent.takenupanewhobbyorplannedatrip?Thinkabouthowyourgincancontributetoatheseevents. HaveyoueverfoundthatperfectChristmasgiftforsomeoneinJulybutdecidedtowaifandbuyitlater?Ifyouthinkit'sagoodgiftbuyitthen.Don'twaituntilthelastminutetobuythatperfectpresent.Chancesarethatyou'lleitherforgetwhatthatgiftwasoritwon'tbeavailablewhenyougotogetitlater.Last﹣minuteshoppingisratherstressfulandusuallydoesn'thavethedesiredresults. AnythingyoucanbuyataretailstorethesedayscanalsobeboughtontheInternet.Betterstillyoucanfindspecialgiftsthatyounormallycantfindatthemall.Searchforspecialgiftideasandyou'llbeamazedatthethingsthatyoumayneverhavethoughtofbefore.Forexamplefindoutwhattheirfavoritetoyorbookwaswhentheywereachildandseeifyoucanfinditforsaleonanauctionsite拍卖现场. Spendsometimewiththepersonandgetabetterideaoftheirinterests.Theymaymentionthatthey'veneededsomethingforthemomentbutjusthaven'tgotaroundtogettingit.Ormaybethey'velostorbrokensomethingthattheyreallymiss.Maybethey'restillusingsomethingfromthepastthatneedsupdating. Ifallelsefailstherearealwaysgiftcards.Ratherthanjustgivethegiftcardhoweverbealittlecreative.Makeagameoutofitsuchaswrappingthecardinaseriesoflargerboxessoittakesawhiletogettoitratherthanjusthavingthemopenanenvelope.Anotherchoiceistoincludeagiftcardwithsometheatretickets.
TomhasbeendreamingofbecomingabankerandIbelievehefinanceinuniversityattheageof20. A.willbestudying B.hadstudied C.hasstudied D.wouldstudy
Idon'tconsidermyselftobeavegetarianatleastnotinthestrictestsenseoftheterm.ThetworulesIfollowasasemi﹣vegetarianarethatInevercookmealsathomeusingmeatnordoIordermeatdisheswhendiningout.Obviouslythesearen'ttheonlyoccasionswhenIhavemeals.MyfriendssometimesthrowdinnerpartiesandIwouldn'twanttoforcemydietarybeliefsuponthem.SoIeatwhatevertheyprepare. I'mnotoffendedbythetasteofmeatatall.ActuallyIgrewupeatingmeat.AsanadulthoweverIbecamemoreconsciousofmyeatinghabits.IstartedtoeatlessandlessmeatuntilonedayIfoundthatIcouldgoformonthswithouteatinganymealscontainingmeatatall.Ibegantoexploretheideaofgivingupanimal﹣basedfoodsaltogetherjusttoseehowIwouldgeton. Soonenoughawholenewworldoffoodopeneduptome.Istartedeatingalotofvegetables.WhatIdiscoveredisthatmaintainingavegetariandietisnotonlyhealthydeliciousandinexpensiveit'salsoabundantinvariety. Evenwithallthehealthbenefitsofavegetariandiet﹣lowerriskofheartattackpreventionofhighbloodpressurereducedratesofcancer﹣therestillseemstobeacompletelackofvegetarianrestaurantsandashortageofvegetarianoptionsatmostrestaurants.Ibegantowonderifpeopleweresimplyaddictedtomeat.ThatmaybetrueforsomebutforotherswhomightgivevegetarianismatryIrealizedthattherewassomethingelseintheway﹣thecultureofvegetarianismappearedtobeunpleasant.Itseemsthattherearetoomanyvegetarianswhobelievethattheirwayofeatingissuperiortoanyother.Theyaren'tjustvegetariansthey'rebetterpeopleorsotheythink.Thisisratheroffensive. SoIproposethatwethevegetariansoftheworldshouldbecomemorerelaxedaboutourmeat﹣eatingfriends.Perhapsifvegetarianismisseentobeanattractiveoptionmorepeoplemighttryit.Isupposeforvegetarianismtotakerootinsocietyforalltoenjoyitneedstochangeitsimagetoonethatisfuninvitingandworthfollowing. 1Whydoestheauthoreatwhateverhisfriendsprepare? A.Hehasnochoice B.Thefoodisappealing C.Hewantstobeapoliteguest D.Itdoesn'tbreakanyofhisrules 2Howdidtheauthorgiveupmeat? A.Throughagradualprocess B.Throughthehelpofothervegetarians C.Bycookingvegetarianmealsathome D.Bysettinghimselfagoalofeatingnomeat 3Whatdoestheauthorthinkisthemainproblemwithvegetarians? A.Theyareaggressive B.Theyareprideful C.Theyareunsocial D.Theyarerude 4Thephrasetakerootinthelastparagraphreferstovegetarianismbecomingmore A.valuable B.fashionable C.exciting D.established
Peopleindevelopedcountriesareincreasinglysufferingfromillnessesresultingfromovereating.Whilestarvationandhungerarestillbigproblemsinmanypoorcountriesintheworldmorethan25percentofthepopulationinAmericaandotherwesterncountriesareobese.Thisdoesn'tjustmeanyouarealittlebitfat.Itmeansyouaremorethan20kilosoverweight. Dr.JohnColonfromOhioStateUniversitysaystheproblemisonlygoingtogetworse.Asmorewomenhavegoneouttoworkyoufindthatparentsingeneralhavelesstimetospendonpreparingfood.That'snotjustcookingbutalsoplanningwhattoeatdoingtheshoppingandbuyingthefreshfood.Familiesthereforeincreasinglyrelyonready﹣madeandfrozenmealswhichtendstobehighinfatandcontainalotofadditivesmaterialsaddedtofoodtoimproveitstasteandsugar.Theotherthingisthatparentsseemtofeelguiltyaboutnotspendingsomuchtimewiththeirkidssotheytendtogivemorequicklytochildren'sdemandsforthingslikesweetsandchocolate. BenBrown.whoisaBritishMemberofParliamentblamesthebigfoodcompanies.Hewantstobananyfoodadvertisingthatisaimedatchildren.Theproblemisthatthesecompaniesspendmillionsofpoundssellingfoodtochildren.It'sallcrisps薯片intheshapeofdinosaursandchocolateintheshapeofMickeyMouse.Imean36what'sgoingtobemorefuntoansight﹣year﹣old﹣﹣﹣anicecreamwithafreetoyoranapple? Onefoodcompanythinksithasananswertothisithasinventedcheese﹣flavoredcabbageandchocolate﹣flavoredcarrots.ItdevelopedtheWhackyVegwithmoneydonatedbyacancerresearchcharitywhichfoundthatadietcontaininglotsoffruitandvegetableshelpsreducecancer.Howevertoday'ssweet﹣toothedkidsneedtobebribed贿赂intoahealthydietandwillonlycattheirgreensiftheytastedifferent. 1TheunderlinedwordobeseinParagraph1probablymeans. A.Fit B.slim C.overweight D.unhealthy 2WhatcanweinferfromtheunderlinedsentenceinParagraph3? A.Foodcompaniesselltoomuchfoodtochildren. B.Foodadvertisingisresponsiblefortheovereatingproblemofchildren. C.Aneight﹣year﹣oldboyprefersanicecreamtoafreetoy. D.ChildrenlikecrispsintheshapeofdinosaursandchocolateintheshapeofMickeyMouse. 3Inordertosolvetheovereatingproblem. A.parentsshouldbribetheirchildren B.greenfoodshouldbeinventedforthechildren C.parentsshouldforcetheirchildrentoeatmorevegetablesandfruit D.foodcompaniesshouldinventhealthyfoodwithspecialtaste 4Whatdoesthepassageintendtotellus? A.Towarnusofthedangerofovereating. B.Totellusthatmostpeopleindevelopedcountriesareoverweight. C.Toshowusthatfoodcompaniesareresponsiblefortheovereatingproblem. D.Toreporttheovereatingproblemindevelopedcountriesanditspossiblecausesandsolutions.
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Failureisprobablythemostexhaustingexperienceapersoneverhas.Thereisnothingmoretiringthannotsucceeding. Weexperiencethistirednessintwowaysasstart﹣upfatigue疲惫andperformancefatigue.Inthe formercasewekeepputtingoffataskbecauseithaseithertooboringortoodifficult.Andthelongerwedelayitthemoretiredwefeel. Suchstart﹣upfatigueisveryrealevenifnotactuallyphysicalnotsomethinginourmusclesandbones.Thesolutionisobviousthoughperhapsnoteasytoapplyalwayshandlethemostdifficultjobfirst. YearsagoIwasaskedtowrite102essaysonthegreatideasofsomefamousauthors.ApplyingmyownruleIdeterminedtowritetheminalphabeticalorderneverlettingmyselfleaveoutatoughidea.AndIalwaysstartedtheday'sworkwiththedifficulttaskofessay﹣writing.Experienceprovedthattheruleworks. Performancefatigueismoredifficulttohandle.Thoughwillingtogetstartedwecannotseemtodothejobright.Itsdifficultiesappearsogreatthathoweverhardweworkwefailagainandagain.InsuchasituationIworkashardasIcan﹣thenlettheunconscioustakeover. WhenplanningEncyclopediaBritannicaIhadtocreateatableofcontentsbasedonthetopicsofitsarticles.NothinglikethishadeverbeendonebeforeanddayafterdayIkeptcomingupwithsolutionsbutnoneofthemworked.Myfatiguebecamealmostunbearable. OnedaymentallyexhaustedIwrotedownallthereasonswhythisproblemcouldnotbesolved.Itriedtoconvincemyselfthatthetroublewaswiththeproblemitselfnotwithme.RelievedIsatbackinaneasychairandfellasleep. AnhourlaterIwokeupsuddenlywiththesolutionclearlyinmind.Intheweeksthatfollowedthesolutionwhichhadcomeupinmyunconsciousmindprovedcorrectateverystep.ThoughIworkedashardasbeforeIfeltnofatigue.Successwasnowasexcitingasfailurehadbeendepressing. HumanbeingsIbelievemusttrytosucceed.Successthenmeansneverfeelingtired. 1Peoplewithstart﹣upfatiguearemostlikelyto. A.acceptfailure B.workhard C.seekhelp D.delaytasks 2Whatdoestheauthorrecommenddoingtopreventstart﹣upfatigue? A.Doingthingsinstrictorder. B.Buildingupphysicalstrength. C.Leavingoutthetoughestideas. D.Dealingwiththehardesttaskfirst. 3Onwhatoccasiondoesapersonprobablysufferfromperformancefatigue? A.Beforestartingadifficulttask. B.Whenallthesolutionsfail. C.Ifthejobisratherboring. D.Afterfindingawayout. 4Whatcouldbethebesttitleforthepassage? A.SuccessIsBuiltuponFailure B.HowtoHandlePerformanceFatigue C.GettingoverFatigueAWaytoSuccess D.FatigueAnEarlySignofHealthProblems
氮及其化合物与人类生产生活息息相关. 1在现代化学中常利用上的特征谱线来鉴定元素称为光谱分析. 2基态N原子的价电子占据的能量最高的能级是价电子在该能级上的排布遵循的原则是. 3NH4BF4氟硼酸铵是合成氮化硼纳米管的原料之一.lmolNH4BF4含有mol配位键. 4化肥NH42SO4中会含有N4H4SO42该物质在水中电离出SO42﹣和N4H44+N4H44+遇到碱性溶液会生成一种形似白磷P4的N4分子.N4比P4的沸点原因为. 5尿素H2NCONH2也是一种常用的化肥其分子中原子的杂化轨道类型有σ键和π键数目之比为. 6Cu3N具有良好的电学和光学性能其晶胞结构如图.Cu+半径为apmN3﹣半径为bpmCu+和N3﹣都是紧密接触的刚性小球则N3﹣的配位数为Cu3N的密度为g•cm﹣3.阿伏加德罗常数用NA表示
ABristolteacherhasprovedthatyoudon'thavetoearnafortunetobeabletomakeendsmeet.KathKellyspentayearlivingonjustonepoundperday.Thismoneydidnotincludetherentofherroomonasharedflatortheutilitybills水电费whichwereallpaidinadvance.1Themotivationfortheexperimentcamefromherconcernaboutbuyingaweddingpresentforherbrotherandhisfiancée.Atthetimeshehadanincomeof﹩10000ayearwhichmeantthatshewasfairlyhardupmostofthetime. 2Ifshespentlessthan﹩1adayshecouldnotcarrythemoneyover.Shealsodecidednottoborrowfromfriends. Kathwasoftenattendingfreeeventsfrombooklaunchestogalleryopenings…3Buseswereoutsoeveryjourneyhadtobemadeonfootorbybicycleandasshecouldn'taffordphonecallsshewouldvisitfriendsorleavethemnotesifshehadanythingtotellthem. 4Insteadofmeetingforlunchinacafeasweusedtowe'dtakesandwichesandeatthemonabenchintheparksheexplains. AttheendoftheyearKathwasabletobuyherbrotherandhisnewwifea﹩1300lifemembershipoftheNationalTrustasaweddingpresentwithhersavings.5Whilehelpingoutonafarmshemethercurrentboyfriendandfoundtrueloveatlast. A.Shewouldattendanyeventthatmighthavefreesnacks. B.Shemadesoupsfromwhatevervegetablesshecouldfind C.Fromthebeginningshesetsomeverystrictrulesforherself. D.Kath'spromiseofpovertyactuallymeantshewentoutmore E.Kathsaysherfriendsweregreataboutthechangeinherlifestyle F.Howeveritdidhavetocovereverythingelseincludingclothingandfood G.Besidesachievingwhatshe'dsetouttodoKath'sexperimentalsohadanunexpectedresult.
FiveyearsagowhenItaughtartataschoolinSeattleIusedTinkertoysasatestatthebeginningofatermtofindoutsomethingaboutmystudents.IputasmallsetofTinkertoysinfrontofeachstudentandsaidMakesomethingoutoftheTinkertoys.Youhave45minutestodayand45minuteseachdayfortherestoftheweek.Afewstudentshesitatedtostart.Theywaitedtoseetherestoftheclasswoulddo.Severalotherscheckedtheinstructionsandmadesomethingaccordingtooneofthemodelplansprovided.Anothergroupbuiltsomethingoutoftheirownimaginations. OnceIhadaboywhoworkedexperimentallywithTinkertoysinhisfreetime.Hisconstructionsfilledashelfintheartclassroomandagoodpartofhisbedroomathome.Iwasdelightedatthepresenceofsuchastudent.Herewasanexceptionallycreativemindatwork.HispresencemeantthatIhadanunexpectedteachingassistantinclasswhosecreativitywouldinfect感染otherstudents. Encouragingthiskindofthinkinghasadownside.Irantheriskoflosingthosestudentswhohadadifferentstyleofthinking.WithoutfailonewoulddeclareButI'mjustnotcreative. Doyoudreamatnightwhenyou'reasleep? Ohsure. Sotellmeoneofyourmostinterestingdreams.Thestudentwouldtellsomethingwildlyimaginative.Flyingintheskyorinatimemachineorgrowingthreeheads.That'sprettycreative.Whodoesthatforyou? Nobody.Idoit. Really﹣atnightwhenyou'reasleep? Sure. Trydoingitinthedaytimeinclassokay? 1TheteacherusedTinkertoysinclassinorderto. A.knowmoreaboutthestudents B.makethelessonsmoreexciting C.raisethestudents'interestinart D.teachthestudentsabouttoydesign 2WhatdoweknowabouttheboymentionedinParagraph3? A.Helikedtohelphisteacher. B.Hepreferredtostudyalone. C.Hewasactiveinclass. D.Hewasimaginative. 3WhatdoestheunderlinedworddownsideinParagraph4probablymean? A.Mistake. B.Disadvantage. C.Difficulty. D.Burden. 4Whydidtheteacheraskthestudentstotalkabouttheirdreams? A.Tohelpthemtoseetheircreativity. B.Tofindoutabouttheirsleepinghabits. C.Tohelpthemtoimprovetheirmemory. D.Tofindoutabouttheirwaysofthinking.
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.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限一词2.只允许修改10处多者从第11处起不计分. Dearfriends Howtimeflying!Thetwo﹣weekexchangeprogramhascometotheend.Lookingbackatthepastdayswearegladtosaywehavebeenbenefitedalotfromtheprogram. InthepasttwoweekswecommunicatedwitheachotherfacetofaceinEnglish.NotonlyhavewemadegreatprogressesinouroralEnglishbutwealsohavelearnedmoreaboutyourculture.Besideswewillneverforgetthefarewellpartythatweenjoyedyourpassionatesongsanddancesaswellasthedelicioustraditionallyfoodofyourcountry.Thetimewespenttogetheristoounforgettablethatwewillvaluethemforever. Wedohopetomeetyouagaininthenearfuture!
Incaseyoufeelnervousduringtheinterviewyoucanmakefullpreparations. A.inreturn B.intime C.incommon D.inadvance
Dozensof志愿者havecometohelpthosesufferingfromtheearthquakes.
Readyformorefunonboard?ConnecttoroKKiWi﹣Fiandtuneintoexcitingvideosthroughoutyourflight!Experiencethrillingentertainmentanddiscovernewworldsasyouenjoyavarietyofinternationalandlocalcontentsusingyourpersonalmobiledevice.Tofindoutwhat'sscreeningonroKKithismonthsimplyvisitwww.rokki.comandcatchthemoviesforfree! PolisEvo Theworldconflictswhentwocopsonefromthecityandtheotherfromasmalltownmeet.AsthetwocontrastingpersonalitiesgoonamissiontotakedownMalaysia'sbiggestdruglordthetwomustlearntoworktogethertoweakenacold﹣bloodeddrugorganization. TheJourney WhenBeereturnstoMalaysiaforthefirsttimeinadecadesheintroducesherconservativefatherUncleChuantoherhappy﹣go﹣luckyBritishfiancéBenji.Despitelanguagebarriersculturaldifferencesandoriginalhesitationfrombothpartiesthetwomencometorealizethattheirpriorities优先权areessentiallyoneandthesame. OlaBola Setinthe1980sduringadisorderlyeconomicperiodOlaBolatellsthestoryofanunlikelyteamofMalaysianfootballersthathasonelastchanceatinternationalglorytoqualifyforthe1980OlympicGames.Disturbedbydisagreementsthatthreatentotearthemaparttheteamhastoovercometheirindividualdifferencesanduniteforthesakeoftheentirecountry. MyPassion﹣DivinginPulauPerhentian JoinAirAsiaAllstarsAndrewScottandAnimEzatibothonanoceanadventure.Theyfacethechallengeofopenwaterdivingforthefirsttime.FromscubatrainingtodiscoveringthebeautyofPerhentianIslandMyPassionfollowsthemontheirexcitingjourneyofcourageastheyconquertheirfearsandmanageitmakingtheirgreatjoy! 1WhatisPolisEvomainlyabout? A.TheunionofaMalaysianfootballteam. B.Twopolicemenjoinforcesandbeatadruggroup. C.Twomenfromdifferentculturesaccepteachother. D.Ahighlychallengingandsuccessfuloceanadventure. 2Whichwillbethebestchoiceifyouarefondofdiving? A.OlaBola. B.MyPassion. C.PolisEvo. D.TheJourney. 3Whatcanbethebesttitleofthetext? A.EntertainmentatYourFingertips B.WellReceivedCinemaFilms C.Bestsellersonwww.rokki.com D.GreatlyPraisedMovies
假如你叫王平根据图表提示给你的加拿大网友Smith写一封信介绍你的寒假生活共20天可根据自己的实际情况添加细节. 注意1.词数100左右2.开头已经给出不计入总词数. DearSmith Howareyou?Howtimeflies!NowthewintervacationwasoverandIhavecomebacktoschoolagain. Yours WangPing
Asalawyerhemustbeabletoargue逻辑地.
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