高二上学期期中联考数学.docx
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高二上学期期中联考数学
2019-2020年高二上学期期中联考(数学)
注意事项:
1.答卷前,考生务必用黑色字迹的钢笔或签字笔将自己的姓名和考生号、试室号、座位号填写在答题卡上.用2B铅笔将试卷类型(A)填涂在答题卡相应位置上.
2.选择题每小题选出答案后,用2B铅笔将答题卡上对应题目悬想的答案信息点涂黑,如需改动,用橡皮擦干净后,再选涂其他答案,答案不能答在试卷上.
一、选择题(本大题共10小题,每小题5分,满分50分.每小题给出的四个选项中,只有一项是符合题目要求的.)
1.已知等比数列的前三项为1,,2,则()
A.4B.C.D.8
2.已知数列满足,,则()
A.27B.28C.29D.30
3.已知数列的前项和,则=()
A.37B.27C.64D.91
4.在中,,则角等于()
A.B.C.D.
5.若是任意实数,且,则()
A.B.C.D.
6.关于的不等式的解集是()
A.B.
C.D.
7.在中,已知且,则的范围是()
A. B. C. D.
8.等差数列的第二,三,六项顺次成等比数列,且该等差数列不是常数数列,则这个等比数列的公比为()
A.3B.4C.5D.6
9.一直角三角形边长成等比数列,且则()
A.三边长之比为3:
4:
5B.三边长之比为
C.较大锐角的余弦值为D.
10.台风中心从A地以的速度向东偏北方向移动,离台风中心内的地区为危险区,城市B在A的正东处,B城市处于危险区内的时间为()
A.B.C.D.
二、填空题(本大题共4小题,每小题5分,满分20分).
11.等比数列的各项均为正数,且则.
12.已知是互异的正数,是的等差中项,是的正的等比中项,(<,>,)选填其中一个.
13.求和
.
14.三角形的一边长为14,这条边所对的角为,另两边之比为8:
5,则这个三角形的面积为.
三、解答题(本大题共6小题,满分80分)解答须写出文字说明、证明过程和演算步骤.
15.(本题满分12分)
已知数列是等比数列,且
,求公比及.
16.(本题满分14分)
在中,已知,是边上的一点,,
,
(1)求的大小;
(2)求的长.
17.(本题满分14分)
关于的不等式
(1)当时解不等式;
(2),解不等式.
18.(本题满分12分)
某文具店购进一批新型台灯,若按每盏台灯15元的价格销售.每天能卖出30盏,若售价每提高1元,日销售量将减少2盏.
(1)设这批台灯提价后每盏的销售价格定为,销售收入为,写出.
(2)为了使这批台灯每天获得400元以上的销售收入,问应如何制定这批台灯每盏的销售价格范围?
19.(本小题满分14分)
已知是首项为19,公差为-2的等差数列,为的前项和.
(1)求通项及;
(2)设是首项为1,公比为3的等比数列,求数列的通项公式及其前项和.
20.(本小题满分14分)
如图半圆的直径为2,点在直径的延长线上,且,点为半圆周上的任意一点,以为边作一个等边,问点在什么位置时,四边形的面积最大?
并求出此时的四边形面积.
答案:
DBACDBCACB
11.212.>13.153814.
15.解:
数列是等比数列
设…………..2分
………5分
17.解:
(1)当时
………2分
………….4分
不等式的解为…………6分
(2)
整理得:
………….10分
……………12分
不等式的解为………………14分
18.解:
(1)日销售收入=每盏台灯的价格日销售量
依题意得:
……….6分
(2)依题意:
………..8分
解得:
。
。
。
。
。
。
。
。
10分
且
答:
为了使这批台灯每天获得400元以上的销售收入,应制定这批台灯每盏的销售价格在。
………..12分
19.解:
(1)因为是首项为的等差数列
。
。
。
。
。
。
。
。
3分
……..6分
(2)是首项为1,公比为3的等比数列
…………10分
…….14分
2019-2020年高二上学期期中联考(英语)
高二级英语
命题单位:
东升高中高二英语科组
Ⅰ语言知识及应用(共两节,满分45分)
第一节完形填空(共15小题;每小题2分.满分30分)
阅读下面短文,掌握其大意.然后从1—15各题所给的A、B、C和D项中,选出最佳选项,并在答题卡上将该项涂黑。
Dadlovedchildren.Andhealwayswanteda__1__family.Eventually,hegotwhathewantedwithtwelvechildreninthefamily.Withoutfail,hewouldshowusofftovisitors.
Once,Dad__2__presentedthefirstthreechildreninthefamily,Ann,MaryandErnestine,tosomevisitors.Thenhepickedupafourthchild,andsaid,"Andthisisour__3__model,pletewithalltheimprovements.Anddon'tthinkthatthisisall;weare___4___the1953modelsometimenextmonth."
Butwhathe___5___mostwastakingusoutforadrive.Ononeoccasionamaninavillagewewerepassingthroughshouted___6__thathehadseenelevenpeopleinourcar,not___7___MumandDad.___8___,Dadcalledoutoverhisshoulder,"You___9___thesecondbabyupfromthefronthere,Mister."
Anothertime,Dadtoldusthisjoke,thoughwewerenotsurethenwhetherhewastellingusthe___10___.Mum,whowasapsychologist(心理学家),oncewenttogivealectureandleftDadinchargeofthe___11___.WhenMumreturned,sheaskedhimifeverythinghadbeenOK.Hesaideverythingwasfine___12___oneofthechildrenhadbeentaughtalessonbecausehehadbeen___13___.Whenhepointedatthechildthathadbeen___14___,Mumlookedathimcalmlyandsaid,"That'snotoneofours,dear.He___15___nextdoor."
1.A.richB.lovelyC.closeD.large
2.A.surprisinglyB.nervouslyC.kindlyD.proudly
3.A.dearestB.smallestC.latestD.youngest
4.A.orderingB.sellingC.expectingD.improving
5.A.hatedB.enjoyedC.caredD.hoped
6.A.crazilyB.excitedlyC.curiouslyD.directly
7.A.countingB.namingC.showingD.reaching
8.A.ImmediatelyB.CarefullyC.AngrilyD.Easily
9.A.sawB.missedC.forgetD.left
10.A.truthB.storyC.adventureD.accident
11.A.lectureB.houseC.officeD.activity
12.A.evenifB.apartfromC.sothatD.exceptthat
13.A.troublesomeB.carelessC.activeD.quiet
14.A.foundB.caughtC.punishedD.wounded
15.A.goestoB.belongstoC.worksD.plays
第二节语法填空(共10小题;每小题l5分.满分15分)
阅读下面短文,按照句子结构的语法性和上下文连贯的要求,在空格处填入一个适当的词或使用括号中词语的正确形式填空,并将答案填写在答题卡标号为16—25的相应位置上。
Wemusthavewatertolive.____16_____thewaterweuseiscleanandfresh,itwillmakeusill.Theanimals____17____(live)inandaroundlakesandriversmustalsohavecleanwater.Ourriversandlakessupplymostofourwater.Theclear,bluewaterfoundbythefirstAmericansettlershaschanged.Manyofourwatersourcesarenow___18____(dirt).Theyarefilled____19_____dirtandwastewhichcannotbecleanedout.Inmanyplaces,waterisnotsafeforustouse.
LakeEriewas_____20______abeautifullake.Nowithasbeencalled“adyinglake”.Wastefromnearbyhomesandfactorieshasbeendumpedinto____21_______.Fishcannolongerliveinmuchofitspollutedwater.GeorgeWashingtononcecalledthePotomac“____22_____finestriverintheworld”.Nowitswaterisnolongerblue.Instead,itissoupygreen.Suds(肥皂泡沫),fromdetergents(洗涤剂;洗衣粉)usedtowashclothes,oftencoverthewaterofourrivers.
Watercannotbe____23_____(make)inafactory.Oncewaterispolluted,itis____24____tomakeitcleanandsafeagain.Wemustlearntotakecareofthewater_____25______wenowhave.
Ⅱ.阅读(共两节,满分40分)
第—节阅读理解(共15小题;每小题2分,满分30分)
阅读下列短文,从26—45题所给的A、B、C和D项中,选出最佳选项,并在答题卡上将该项涂黑。
A
Since1989,DaveThomas,whodiedatage69,wasoneofthemostrecognizablefacesonTV.Heappearedinmorethan800mercials(商业广告)forthehamburgerchainnamedforhisdaughter.“Aslongasitworks,"hesaidin1991,“I'llcontinuetodothosemercials."
Eventhoughhewassuccessful,Thomasremainedtroubledbyhischildhood.“Hestillwon'tletanyoneseehisfeet,whichareoutofshapebecauseheneverhadproperfittingshoes,"Wendysaidin1993.Borntoasinglemother,hewasadopted(收养)asababybyRexandAulevaThomasofKalamazooinMichigan.AfterAulevadiedwhenhewas5,ThomasspentyearsontheroadasRextraveledaroundseekingconstructionwork.“Hefedme,"Thomassaid,“andifIgoutofline,he'dbeatme."
Movingoutonhisownat15,Thomasworked,firstasawaiter,inmanyrestaurants.Buthehadsomethingmuchbetterinmind.“IthoughtifIownedarestaurant,"hesaid,“Icouldeatforfree."A1956meetingwithHarlandSandersledThomastoacareerasthemanagerofaKentuckyFriedChickenrestaurantthatmadehimamillionairein1968.
In1969,afterbreakingwithSanders,ThomasstartedthefirstWendy'sOldFashionedHamburgers,inColumbus,Ohio,whichsetitselfapartbyservingmadetoorderburgers.With6,000restaurantsworldwide,thechainnowmakes$6billionayearinsales.
Althoughtroubledbyhisownexperiencewithadoption,Thomas,marriedsince1954toLorraine,66,andwithfourgrownkidsbesidesWendy,feltitcouldofferafutureforotherchildren.HestartedtheDaveThomasFoundation(基金会)forAdoptionin1992.
In1993,Thomas,whohadleftschoolat15,graduatedfromCoconutCreekHighSchoolinFlorida.HeeventookLorrainetothegraduationdanceparty.ThekidsvotedhimMostLikelytoSucceed.
“TheDaveyousawonTVwastherealDave,"saysfriendPatWilliams.“Hewasn'tagreatactororagreatspeaker.HewasjustJoeEverybody."
26.Whatisthearticlemainlyabout?
A.ThelifeofDaveThomas.B.ThedreamofDaveThomas.
C.TheschoolingofDaveThomas.D.ThegrowthofDaveThomas'sbusiness.
27.Whatdoweknowabouthischildhood?
A.Helivedapoorlife.B.Hehadcaringparents.
C.Hestayedinoneplace.D.Hedidn'tgotoschool.
28.ChoosetherighttimeorderofthefollowingeventsinThomas'slife.
a.graduatedfromhighschoolb.startedhisownbusiness
c.becameamillionaired.startedafoundatione.metHarlandSanders
A.e,b,c,d,a,B.a,e,c,b,d,
C.e,c,b,d,a,D.a,e,b,c,d,
29.“HewasjustJoeEverybody."(inthelastparagraph)means_______.
A.DavewasfamousB.Davewasordinary
C.DavewasshowyD.Davewasshy
30.WhatisthenameofDaveThomas'sbusiness?
A.Thomas's.B.Wendy's.C.Lorraine's.D.Rex's.
B
Londonhasmorethanninemillionvisitorseveryyear.TheyeandvisitsomeofthemostfamousplacesinEngland:
BigBen,theTowerofLondonandtheRiverThames.
YoucanseesomeofthemostinterestingplacesinLondonbygettingonthetourbuses.OryoucantakearideontheLondonEye.Thislargewheelslowlytakesyou135mabovetheRiverThames.
TheRiverThamesisLondon’smainwaterway.Ithasshapedthecapital’slandscape,historyandgeography.Sooneofthebestwaysofknowingmoreaboutthecityistotakeatripalongtheriver.
TheclocktoweroftheHousesofParliament,BigBen,hasbeeoneofthemainsymbolsofLondon.Thesoundofthebell,whichyoucanhearatthebeginningofmanytelevisionandradioprogrammes,hasbeewell-knownthroughoutthenation.
NovisittoLondonispletewithoutalookattheTowerofLondon,intheeasternpartofthecity.AfterBigBen,theTowermaybeLondon’smostvisitedtouristspot.DirectlysouthisTowerBridge,whichismorethan100yearsold.
AlongallthepalacesinLondon,BuckinghamPalaceisthemostfamous.IthasbeenthemainLondonhomeoftheroyalfamilysinceQueenVictoriamovedtherein1873.YoucanvisitsomeoftheroomsinAugustandSeptember.Andmostmorningsoftheyearyoucanwatchthesoldiersoutsidechangingtheguard.
AboutonehourbytrainoutofLondonistheTowerofWindsor.HereyoucanvisitanotheroftheQueen’shomes-WindsorCastle.Therewasafirein1992andmanyoftheroomswerebadlyburned.Butnowtheyarefullofbeautifulpictures,tablesandchairsagain.
SightseeinginLondonisgreat,butitcangetverytiring.So,thebestwaytostartthedayistofillupwithanEnglishbreakfast.
YoucanbuyanEnglishbreakfastinnearlyeveryhot