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已知双曲线C:﹣=1(a>0,b>0)的离心率为,则C的渐近线方程为( )
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高二上学期数学《》真题及答案
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已知双曲线-=1a>0b>0和椭圆+=1有相同的焦点且双曲线的离心率是椭圆离心率的两倍则双曲线的方程
已知双曲线﹣=1a>0的离心率为2则a=.
已知双曲线a>0b>0的焦点到渐近线的距离是a则双曲线的离心率的值是.
已知双曲线-=1a>0b>0和椭圆+=1有相同的焦点且双曲线的离心率是椭圆离心率的两倍则双曲线的方程
已知F1F2分别是双曲线-=1a>0b>0的左右焦点P为双曲线右支上的任意一点.若=8a则双曲线的离
已知双曲线的一条渐近线经过点12则该双曲线的离心率的值为
已知抛物线y2=8x的准线过双曲线-=1a>0b>0的一个焦点且双曲线的离心率为2则该双曲线的方程为
已知抛物线y2=8x的准线过双曲线-=1a>0b>0的一个焦点且双曲线的离心率为2则该双曲线的方程为
.已知双曲线的离心率为2焦点是-4040则双曲线的方程为____________.
已知双曲线=1a>0b>0的右焦点为F.c0.1若双曲线的一条渐近线方程为y=x且c=2求双曲线的方
已知双曲线=la>0b>0的一条渐近线与直线2x+y﹣3=0垂直则该双曲线的离心率为______.
已知双曲线=1的右焦点为30则该双曲线的离心率等于_____
已知双曲线的一条准线为则该双曲线的离心率为
已知双曲线=1a>0b>0的右焦点为F.若过点F.且倾斜角为60°的直线与双曲线的右支有且只有一个交
(1,2)
(-1,2)
(2,+∞)
[2,+∞)
已知双曲线和椭圆有相同的焦点且双曲线的离心率是椭圆离心率的两倍则双曲线的方程为.
已知中心在原点焦点在x轴上的双曲线的离心率为实轴长为4则双曲线的方程为.
已知双曲线的渐近线方程为2x±3y=0则该双曲线的离心率为________.
已知双曲线-=1a>0b>0的右焦点为F.若过点F.且倾斜角为30°的直线与双曲线的一条渐近线平行则
已知双曲线=1的右焦点为30则该双曲线的离心率为________.
已知双曲线-=1a>0b>0和椭圆+=1有相同的焦点且双曲线的离心率是椭圆离心率的两倍则双曲线的方程
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过渡元素铁可形成多种配合物如[FeCN6]4﹣FeSCN3等. 1Fe2+基态核外电子排布式为. 2科学研究表明用TiO2作光催化剂可将废水中CN﹣转化为OCN﹣并最终氧化为N2 CO2.OCN﹣中三种元素的电负性由大到小的顺序为. 3与CN﹣互为等电子体的一种分子为填化学式1molFeCN63﹣中含有σ键的数目为. 4铁的另一种配合物FeCO5熔点为﹣20.5℃沸点为103℃易溶于CCl4据此可以判断FeCO5晶体属于填晶体类型. 5铁铝合金的一种晶体属于面心立方结构其晶胞可看成由8个小体心立方结构堆砌而成.已知小立方体如图所示.该合金的化学式为.
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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Λ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. Amostinterestingthinghappenedtomelastwinter.DuringmywintervocationIspendmyluckymoneyonagiftforGrandma.OneFridayafternoonIwenttoacellphonestoreandchosealargerbuttonphonespecialdesignedforseniors.IgavethemtomygrandmawhenIcametovisitherattheweekend.UponreceivethephoneGrandmawasveryhappyandeagerlearnhowtouseit.Ihadpatientlyexplainedalltheimportantfunctionssheneeded.Grandmalearnedcarefullybutwantedtohaveatrystraightaway.Undermyhelpshesuccessfullycalledhergoodfriend.ThatafternoonGrandmaproudlytoldtheneighborthatshecouldmakecallswiththenewphoneIboughther.TheyallpraisedwhatthoughtfulIwas.
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常温常压下将NH3缓慢通入饱和食盐水中至饱和然后向所得溶液中缓慢通入CO2整个实验进程中溶液的pH随通入气体体积的变化曲线如图所示实验中不考虑氨水的挥发.下列叙述不正确的是
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8分RecentlytheTVshow'WherearewegoingDad?'producedbyHunanSatelliteTelevisionisabighitacrossnation.Manyfamousstarsbroughttheirchildrentoastrangevillagealoneandtheyhadtospend72hourswiththeirchildrenthere.Theprogramfullyshowedusamodernversionofthe'howtobeagoodfather'.Astheyoungparentstodayaretoobusytotakecareoftheirchildrenthisnewformof'Lostontheway'playedbynannyDaddyandcutekidstriggered触发alotofpeople'semotionalresonance共鸣.Boththekidsandtheirparentswillfindthattheirheartsarebeingdrawncloser.Butthiskindoffeelinghasjustprovedthatthereisabigspiritualbarrierbetweenthemodernparentsandchildren.TheTVshowslike'Childrenarehardtosupport!''WherearewegoingDad?''hotmom'and'cutekids'arebecomingmoreandmorepopular.Alloftheseshowthenewparents'confusioninchildren'seducationandtheappealforthebalancebetweencareerandfamily.Inthereallifeontheonehandtheyoungparentsfeelhelplessbecausetheyaretoobusytoaccompanytheirchildrenunderthepressuresofworkandlifeontheotherhandtheycontinuetodoso.ThedatacollectedbyHNTVshowsthatnearlytwo﹣thirdsoftheiraudiencearefemaleamongwhom36%areagedfrom25to34.Wecanimaginesuchascenethatoneeveningayoungmotheriswatchingtheshowwithheryoungchildrenwhileherhusbandisstillatworkortrappedinsocializingormaybeisjustplayingcomputergamesinthebedroom.Thestoryofachildwithoutthecompanyoffatherisstillgoingon.Infactitissometimesthesametomothers.Inamodernfamilyitisoftentheoldwhotaketheresponsibilityofraisingachild.Theparticipationofmotherinthechildren'seducationisalsoverylow.Itisjustthiskindofconfusionwheretheparentshavegoneinthemodernfamilyeducationandwheretheparentswillguidetheirchildrentogothat'WherearewegoingDad?'showsus.Ifachildwantstogrowuphealthilyandsafelyintoamoderncitizenwithindependentpersonalityandfreespirititisveryimportantforhimorhertofollowtheparentswhoserveastheirfirstteacher.MaybethisistherealreasonwhysuchkindofTVprogramscouldgethot.Thetruthisthatchildrenwillgowheretheirparentsgoandsocietywillgowherethechildrengo.1Toraiseachildinmodernsocietyparentsshould.A.breakdownthebarrierbetweenchildrenandteachersB.balancewellbetweenfamilyandcareerC.playcomputergameswiththeirchildrenD.keeptheirchildrenathometoavoidsocializing2Whatdoestheunderlinedword'participation'probablymean?A.takingresponsibilityB.understandingC.takingpartD.keepingcompany3Whatattitudetowardsmodernfamilyeducationdoestheauthorexpressinthesecondparagraph?A.Optimistic.B.Indifferent.C.Proud.D.Worried.4Whichoneisthebesttitleofthepassage?A.NewproblemsinModernChildren'sEducationB.ModernEducationisImportantC.ConfusionBehind'Wherearewegoingdad?'D.NannyDaddyandCuteKids
AnewcollectionofphotosbringsanunsuccessfulAntarcticvoyagebacktolife.FrankHurley'spictureswouldbeoutstanding﹣﹣﹣﹣undoubtedlyfirst﹣ratephoto﹣journalism﹣﹣﹣iftheyhadbeenmadelastweek.Infacttheywereshotfrom1914through1916mostofthemafteradisastrousshipwreck海难byacameramanwhohadnoreasonableexpectationofsurvival.Manyoftheimageswerestoredinanicechestunderfreezingwaterinthedamagedwoodenship.TheshipwastheEnduranceasmalltightNorwegian﹣builtthree﹣masterthatwasintendedtotakeSirErnestShackletonandasmallcrewofseamenandscientists27meninalltothesouthernmostshoreofAntarctica'sWeddellSea.FromthatpointShackletonwantedtoforceapassagebydogsled雪橇acrossthecontinent.ThejourneywasintendedtoachievemorethanwhatCaptainRobertFalconScotthaddone.CaptainScotthadreachedtheSouthPoleearlyin1912buthaddiedwithhisfourcompanionsonthemarchback.AswriterCarolineAlexandermakesclearinherforcefulandwell﹣researchedstoryTheEnduranceadventuringwaseventhenathoroughlycommercialeffort.Scott'slastjourneycompletedasbelayinatentdyingofcoldandhungercaughttheworld'simaginationandafilmmadeinhishonordrewcrowds.ShackletonaonetimeBritishmerchant﹣navyofficerwhohadgottowithin100milesoftheSouthPolein1908startedabusinessbeforehis1914voyagetomakemoneyfrommovieandstillphotography.FrankHurleyaconfidentandgiftedAustralianphotographerwhoknewtheAntarcticwashiredtomaketheimagesmostofwhichhaveneverbeforebeenpublished.33.WhatdoweknowaboutthephotostakenbyHurley?A.TheyweremadelastweekB.TheyshowedunderseasceneriesC.TheywerefoundbyacameramanD.Theyrecordedadisastrousadventure34.WhoreachedtheSouthPolefirstaccordingtothetext?A.FrankHurleyB.ErnestShackletonC.RobertFalconScottD.CarolineAlexander35.WhatdoesAlexanderthinkwasthepurposeofthe1914voyage?A.ArtisticcreationB.ScientificresearchC.MoneymakingD.Treasurehunting.
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8分•Putsunscreen防晒油onbeforegoingoutinthesun.•Takeitwithyou.•Useit﹣afteraswim.﹣everyhourorsowhileplayingoutdoors.﹣ifyougetsweaty.•Coverupwhenthesunisoverhead﹣10a.m.﹣2p.m..﹣especiallyatlunchtime.•Getyoursuntan晒黑graduallyandnottoomuch.•Controlledexposure暴露tosunshinehelpsavoidskincancer.Askyourchemisttorecommendasuitablesunscreen.QueenslandCancerFundP.O.BoxSpringHillQLD.4000Phone078397077ProvidedforcommunityawarenessbytheQueenslandCancer1Thispassageismostlikelytobe.A.anarticlefromastudenttextbookB.adirectionfromabottleofmedicineC.asuggestionfromachemistD.anadvertisementfromanewspaper2WhichstatementisTRUE?A.Youshouldfrequentlyputonsunscreenwhileplayingoutdoors.B.You'llneverhaveskincancerwithcontrolledexposure.C.Youmustn'tstayoutsidefrom10a.m.to2p.m.D.Themoreyougetsunshinethebetteryourhealthwillbe.3AccordingtothepassagewecanseethatQueenslandCancerFundwantsto_.A.sellsunscreenshirtandhatB.helppeopleguardagainstskincancerC.encouragepeopletoplayinthesunD.makemoneyoutofsunscreen4Ifyouwantasunscreenyoushouldaskforadvice.A.thesellerB.theadvertiserC.yourdoctorD.yourparents
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G是一种新型香料的主要成分之一其结构中含有三个六元环.G的合成路线如下部分产物和部分反应条件略去已知①RCH=CH2+CH2=CHR′CH2=CH2+RCH=CHR′②B中核磁共振氢谱图显示分子中有6种不同环境的氢原子③D和F是同系物.请回答下列问题1CH32C=CH2的系统命名法名称为.2A→B反应过程中涉及的反应类型依次为.3D分子中含有的含氧官能团名称是G的结构简式为.4生成E的化学方程式为.5同时满足下列条件①与FeCl3溶液发生显色反应②苯环上有两个取代基含C=O的F的同分异构体有种不包括立体异构其中核磁共振氢谱为4组峰能水解的物质的结构简式为.6模仿由苯乙烯合成F的方法写出由丙烯制取α﹣羟基丙酸的合成线路.
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FiveyearsagowhenItaughtartataschoolinSeattleIusedTinkertoysasatestatthebeginningofatermtofindoutsomethingaboutmystudents.IputasmallsetofTinkertoysinfrontofeachstudentandsaid'MakesomethingoutoftheTinkertoys.Youhave45minutestoday﹣and45minuteseachdayfortherestoftheweek.'Afewstudentshesitatedtostart.Theywaitedtoseetherestoftheclasswoulddo.Severalotherscheckedtheinstructionsandmadesomethingaccordingtooneofthemodelplansprovided.Anothergroupbuiltsomethingoutoftheirownimaginations.OnceIhadaboywhoworkedexperimentallywithTinkertoysinhisfreetime.Hisconstructionsfilledashelfintheartclassroomandagoodpartofhisbedroomathome.Iwasdelightedatthepresenceofsuchastudent.Herewasanexceptionallycreativemindatwork.HispresencemeantthatIhadanunexpectedteachingassistantinclasswhosecreativitywouldinfect感染otherstudents.Encouragingthiskindofthinkinghasadownside.Irantheriskoflosingthosestudentswhohadadifferentstyleofthinking.Withoutfailonewoulddeclare'ButI'mjustnotcreative.''Doyoudreamatnightwhenyou'reasleep?''Ohsure.''Sotellmeoneofyourmostinterestingdreams.'Thestudentwouldtellsomethingwildlyimaginative.Flyingintheskyorinatimemachineorgrowingthreeheads.'That'sprettycreative.Whodoesthatforyou?''Nobody.Idoit.''Really﹣atnightwhenyou'reasleep?''Sure.''Trydoingitinthedaytimeinclassokay?'25.TheteacherusedTinkertoysinclassinorderto?A.knowmoreaboutthestudentsB.makethelessonsmoreexcitingC.raisethestudents'interestinartD.teachthestudentsabouttoydesign26.WhatdoweknowabouttheboymentionedinParagraph3?A.Helikedtohelphisteacher.B.Hepreferredtostudyalone.C.Hewasactiveinclass.D.Hewasimaginative.27.Whatdoestheunderlinedword'downside'inParagraph4probablymean?A.Mistake.B.Drawback.C.Difficulty.D.Burden.28.Whydidtheteacheraskthestudentstotalkabouttheirdreams?A.Tohelpthemtoseetheircreativity.B.Tofindoutabouttheirsleepinghabits.C.Tohelpthemtoimprovetheirmemory.D.Tofindoutabouttheirwaysofthinking.
2014年诺贝尔化学奖授予超高分辨率荧光显微镜的贡献者.人类借助于这种显微镜可以观察到单个的蛋白质分子.下列有关叙述不正确是
假定你是李华你校摄影俱乐部photographyclub将举办国际中学摄影展.请给你的英国朋友Peter写封信.请他提供作品.信的内容包括 1.主题环境保护 2.展览时间 3.投稿邮箱intlphotoshow@gmschool.com. 注意 1.词数100左右 2.可以适当增加细节以使行文连贯.
What'sOn?ElectricUnderground7.30pm﹣1.00amFreeattheCyclopsTheatreDoyouknowwho'splayinginyourarea?We'rebringingyouaneveningofliverockandpopmusicfromthebestlocalbands.Areyouinterestedinbecomingamusicianandgettingarecordingcontract合同?Ifsocomeearlytothetalkat7.30pmbyJulesSkyeasuccessfulrecordproducer.He'sgoingtotalkabouthowyoucanfindtherightpersontoproduceyoumusic.GeeWhizz8.30pm﹣10.30pmComedyatKaleidoscopeComeandseeGeeWhizzperform.He'sthefunnieststand﹣upcomedianonthecomedyscene.Thisjoyfulshowwillpleaseeveryonefromtheyoungesttotheoldest.GeeWhizzreallyknowshowtomakeyoulaugh!Ourbarisopenfrom7.00pmfordrinksandsnacks快餐.Simon'sWorkshop5.00pm﹣7.30pmWednesdaysatVictoriaStageThisisagoodchanceforanyonewhowantstolearnhowtodocomedy.Theworkshoplooksateverykindofcomedyandpracticesmanydifferentwaysofmakingpeoplelaugh.Simonisacomedianandactorwhohas10years'experienceofteachingcomedy.Hisworkshopsareexcitingandfun.AneveningwithSimonwillgiveyoutheconfidencetobefunny.CharlotteStone8.00pm﹣11.00pmPizzaWorldFinefoodwithbeautifuljazzmusicthisisagreateveningout.CharlotteStonewillperformsongsfromhernewbest﹣sellingCDwithJamesPickeringonthepiano.ThemenuisItalianwithexcellentmeatandfreshfishpizzasandpasta面食.Bookearlytogetatable.Ourbarisopenalldayandservescocktailscoffeebeerandwhitewine.21.Whocanhelpyouifyouwanttohaveyourmusicproduced?A.JulesSkye.B.GeeWhizz.C.CharlotteStone.D.JamesPickering.22.Atwhichplacecanpeopleofdifferentagesenjoyagoodlaugh?A.TheCyclopsTheatreB.KaleidoscopeC.VictoriaStageD.PizzaWorld23.WhatdoweknowaboutSimon'sWorkshop?A.Itrequiresmembershipstatus.B.Itlaststhreehourseachtime.C.Itisrunbyacomedyclub.D.ItisheldeveryWednesday.24.WhenwillCharlotteStoneperformhersongs?A.5.00pm﹣7.30pm.B.7.30pm﹣1.00am.C.8.00pm﹣11.00pm.D.8.30pm﹣10.30pm.
下列物质性质与应用对应关系正确的是
氯化亚铜CuCl常用作有机合成工业中的催化剂在空气中迅速被氧化成绿色见光则分解变成褐色.下图是工业上用制作印刷电路的废液含Fe3+Cu2+Fe2+Cl﹣生产CuCl的流程 根据以上信息回答下列问题 1写出生产过程中XY. 2写出产生CuCl的化学方程式. 3在CuCl的生成过程中理论上不需要补充SO2气体结合化学方程式和必要的文字说明理由. 4在CuCl的生成过程中除环境问题安全问题外你认为还应该注意的关键问题是. 5实验探究pH对CuCl产率的影响如下表所示 析出CuCl晶体最佳pH为当pH较大时CuCl产率变低的原因是. 6氯化亚铜的定量分析 ①称取样品0.25g和10mL过量的FeCl3溶液于250mL锥形瓶中充分溶解. ②用0.10mol•L﹣1硫酸铈[CeSO42]标准溶液滴定. 已知CuCl+FeCl3═CuCl2+FeCl2Fe2++Ce4+═Fe3++Ce3+. 三次平行实验结果如下平行实验结果相差不能超过1% 则样品中CuCl的纯度为结果保留三位有效数字.
TheexperimenthasbeenfinishedbutnooneknowswhatgreatdifficultyIhad______it. A.making B.made C.tomake D.formaking
福酚美克是一种影响机体免疫力功能的药物可通过以下方法合成 1B中的含氧官能团有和填名称. 2C→D的转化属于反应填反应类型. 3已知E→F的转化属于取代反应则反应中另一产物的结构简式为. 4AC9H10O4的一种同分异构体X满足下列条件 Ⅰ.X分子有中4种不同化学环境的氢. Ⅱ.X能与FeCl3溶液发生显色反应. Ⅲ.1molX最多能与4molNaOH发生反应. 写出该同分异构体的结构简式. 5已知+R3CHO根据已有知识并结合相关信息写出以为原料制备的合成路线流程图无机试剂任用. 合成路线流程图示例如下 CH3CH2BrCH3CH2OHCH3COOCH2CH3.
一定温度下在三个体积均为2.0L的恒容密闭容器中发生如下反应PCl5g⇌PCl3g+Cl2g 下列说法正确的是
30分Mygrandmotherwasalwaysencouragingmetosetgoalsandworkhardtoachievethem.Shewouldtellmenottobeafollowerandnottoset1onwhatIcouldachieve.She2believedthattherewerenolimitsthatyoucould3whateveryouwanted.Iwouldneverforgetthefollowingstorythatsheoncetoldme.Afarmerwonfirst4atthecountryfairforhishugeradish小萝卜thatwastheexactshapeand5ofamilkbottle.Manywere6astohowthefarmerwasabletogrowthisradishthatwastheexactshapeofamilkbottle.7onegentlemanwentuptothefarmerandaskedthequestion.Thefarmerreplied'Itwas8.IgottheseedgrowingandthenIputitintothemilkbottle.Ithad9elsetogo.'Youcanusethisstoryasananalogy比喻tolife﹣ourlivesare10bythekindofsurroundingsweplaceourselvesinthepeoplethatweallowto11usandthegoalswegiveourselves.Ifweonly12andtakenoactionthenwegetnofurther.Butifwe13setagoalandtakeactionthenourlifetakesa14shape.Goalsandactionscanhelpusaccomplishmoreinayearthanwhatsomepeoplewillaccomplishinalifetime.Toprovethis15readthebiographiesof16peopleandyouwillseethatgoalsandactions17playedabigroleintheirsuccess.Rememberthe18ofMaryKayAshwhosaid'Don'tlimityourself.Manypeoplelimitthemselvestowhattheythinktheycando.Youcango19yourmindletsyou.Whatyoubelieverememberyoucanachieve.'Insummarydon'tputyourselfinabottleinotherwordsmoveoutofwhatis20andsecureifyouwanttomoveforward.1A.expectations B.rules C.limits D.lines2A.truly B.naturally C.tightly D.partly3A.win B.grasp C.realize D.achieve4A.price B.prize C.position D.award5A.size B.length C.weight D.height6A.doubtful B.worried C.anxious D.curious7A.Immediately B.Gradually C.Finally D.Actually8A.strange B.easy C.funny D.secret9A.nowhere B.everywhere C.somewhere D.anywhere10A.shaped B.formed C.controlled D.improved11A.understand B.help C.influence D.contact12A.dream B.refuse C.doubt D.change13A.struggle B.refuse C.continue D.plan14A.beautiful B.different C.solid D.clear15A.truth B.lesson C.point D.evidence16A.successful B.brave C.friendly D.careful17A.asusual B.aboveall C.atall D.infact18A.case B.wisdom C.thought D.speech19A.asif B.incase C.asfaras D.aslongas20A.comfortable B.valuable C.ordinary D.boring
25℃时下列各组离子在指定溶液中一定能大量共存的是
Hundredsofpeoplehaveformedimpressionsofyouthroughthatlittledevice装置onyourdesk.Andthey'veneveractually41you.Everythingtheyknowaboutyou42throughthisdevicesometimesfromhundredsofmilesaway.43heyfeeltheycanknowyou44fromthesoundofyourvoice.That'showpowerfulthe45is.Powerfulyesbutnotalways46.ForyearsIdealtwithmytravelagentonlybyphone.RanimyfacelessagentwhomI'dnevermet47gotmerock﹣bottompricesonairfarescarsandhotels.Buthercoldvoicereally48me.Isometimeswishedto49anotheragent.OnemorningIhadto50animmediateflighthomeforafamilyemergency.IranintoRani'soffice51.Thewomansittingatthedesk52mymadnesssympatheticallyjumpedup.Shegavemea53smilenoddedwhilelisteningpatientlyandthenprintedoutthe54immediately.'Whatawonderfullady!'Ithought.Rushingout55Icalledoutovermyshoulder'Bythewaywhat'syourname?''I'mRani'shesaid.Iturnedaroundandsawa56womanwithabigsmileonherfacewavingtowishmeasafetrip.Iwas57!WhyhadIthoughtshewascold?Raniwaswellso58.SittingbackinthecaronthewaytotheairportIfigureditallout.Rani's59﹣﹣﹣herwarmsmilehernodsher‘I'mhereforyou'60﹣﹣﹣wereallsilentsignalsthatdidn'ttravelthroughwires.41.A.accepted B.noticed C.heard D.met42.A.came B.moved C.ran D.developed43.A.Thus B.Yet C.Then D.Indeed44.A.rather B.also C.just D.already45.A.Telephone B.voice C.connection D.impression46.A.direct B.useful C.easy D.accurate47.A.inperson B.bymyself C.inpublic D.onpurpose48.A.annoyed B.interested C.discouraged D.confused49.A.promote B.train C.find D.know50.A.arrange B.postpone C.confirm D.book51.A.forthefirsttime B.atanytime C.fromtimetotime D.ingoodtime52.A.expecting B.seeing C.testing D.avoiding53.A.shy B.comforting C.familiar D.forced54.A.bill B.form C.ticket D.list55.A.hopefully B.disappointedly C.gratefully D.regretfully56.A.careful B.serious C.nervous D.pleasant57.A.amused B.worried C.helpless D.speechless58.A.calm B.nice C.proud D.clever59.A.forgiveness B.eagerness C.friendliness D.skillfulness60.A.explanation B.attitude C.concept D.Behavior
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