陕西省2023-2024学年度高二年级12月联考数学.考卷答案

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陕西省2023-2024学年度高二年级12月联考数学.考卷答案试卷答案

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46.C她教育我要感激(gratefulfor)我生活中拥有的一切

47.B当我未能(failed)被选为学校啦啦队成员的时候，我很是心烦意乱

48.D的确如此，我成为(became))国家级体操运动员

49.A这位曾经拒绝叫我任何名字除了她的“小兔子”的妇人(woman),现在连我的名字甚至都记不得了

50.C不久，直到我唱起FrankSinatra的《带我飞向月球》时她才记得我

她眼里闪烁着认知(recognition)的小火花是我所期待(expected)的

51.B解析见上题

52.C一天，这微光完全(completely)从她的眼里消失了

53.C我听到她微弱地(weakly)哼着《带我飞向月球》

54.A那是我最后一次听到她的声音(voice)),但是我将永记心中

55.C当奶奶离开(left)的时候，她带着我童年的一段记忆

56.whose57.in58.a59.her60.getting/toget61.preference62.tomake/making63.havebeenworking64.merely65.appreciative第一节Onepossibleversion:NoticeInordertosatisfyyourthirstforknowledgeabouttheSilkRoad,ourschoolwillorganizearelevantlecture,whichisintendedforallyoustudentsintheInternationalDepartment.Itsdetailsareasfollows.Asplanned,thelecturewillbeheldfrom2:00to4:00inourschoollecturehallthisThursdayafternoon.ProfessorWangwillbeinvitedtogiveavividdescriptionabouttheSilkRoad.I'msureyou'llhaveabetterunderstandingoftheancientChinesecultureandeconomy,whichwillsurelyhaveyourknowledgewidenedandyourhorizonbroadened.Afterthelecture,youarewelcometoraisequestionsactively.Byallmeans,Mr.Wangwillbegladtocommunicatewithyouuntilyouaresatisfied.Besuretoattenditontime.Idaresayyouwillgainalotfromit.StudentUnionOctober24,2022第二节Onepossibleversion:Thoughalittlescared,Tommadeuphismindtofindtheanimal.Quietly,hebeganfollowingthefootprints.Hedidn'twanttoscaretheanimalaway.Therewasnothinginsightexceptthestrangefootprints.Suddenly,thereseemedtobesomestrangesoundsahead.Tomstoppedandlistenedcarefully.Itcamefromthebackyard.Thrilled,mixedwithafeelingofalittlefright,hequickenedhispace!Thesoundsbecameclearerandclearer.Holdinghisbreath,Tompeekedaroundthecornerofthehouse.Itturnedoutthathissisterwasmakingthesounds.Shehadsomethingwornonbothfeet.Shewaswalkingonthesnowbackandforthhappily.Noticingherbrother,Lucywavedexcitedly,"SeewhatIfoundinAuntGwen'sbasement?Theyareold-fashionedsnowshoes.AuntGwensaidtheshapehelpedwalksteadilyonthesnow.Andthatistrue!"Tomthenlaughed,"NowonderIcouldn'tfindthosefootprintsinAuntGwen'sbook.Therewasnopageforasnowshoeingsister.【高二第一学期期中质量检测·英语参考答案第4页（共4页）】23022B

分析由题意可得a+b=9，c=3，结合隐含条件求得a，b的值，则椭圆方程可求．

解答解：由椭圆的对称轴为坐标轴，长轴长与短轴长的和为18，焦距为6，
得2a+2b=18，2c=6，
∴a+b=9，c=3，①
又a²=b²+c²，②
联立①②解得：a=5，b=4．
∴椭圆的方程为：$\frac{x^2}{25}+\frac{y^2}{16}=1$或$\frac{x^2}{16}+\frac{y^2}{25}=1$．

点评本题考查椭圆标准方程的求法，关键是对隐含条件的运用，是基础题．