2015-2022年鄭州衛(wèi)生健康職業(yè)學(xué)院高職單招語文／數(shù)學(xué)／英語筆試參考題庫含答案解析（圖片大小可自由調(diào)整）第1卷一.數(shù)學(xué)題庫(共25題)1.在平面直角坐標(biāo)系xoy中，曲線C1的參數(shù)方程為OC2（Ⅰ）化曲線C1、C2的方程為普通方程，并說明它們分別表示什么曲線；（Ⅱ）設(shè)曲線C1與x軸的一個交點(diǎn)的坐標(biāo)為P作曲線C2的切線l，求切線l的方程．OA與OB的夾角為與OC的夾角為|OA|=1，|OB|=1，|OC|=23，若|OC|=λOA+μOB(λ，μ∈R)，求λ+μ的值．3.已知一種材料的最佳加入量在100g到200g0.618可以是（）g。4.在某項(xiàng)測量中，測量結(jié)果ξ服從正態(tài)分布0.4，則ξ在（0，2）內(nèi)取值的概率為（A．0.9）B．0.5C．0.6D．0.8ABCD是圓OAB和DC相交于點(diǎn)BCAD的值為______．6.已知在一場比賽中，甲運(yùn)動員贏乙、丙的概率分別為0.8，0.7，比賽沒有平局．若甲分別與乙、丙各進(jìn)行一場比賽，則甲取得一勝一負(fù)的概率是______．7.某海域有島在A島正東40A島正西20在A、B兩島收到魚群反射信號的時間比為5：3．你能否確定魚群此時分別與A、B兩島的距離？8.兩圓x2+y2-1=0和x2+y2-4x+2y-4=0的位置關(guān)系是（A．內(nèi)切）B．相交C．外切D．外離9.用反證法證明：“方程ax2+bx+c=0，且a，b，c都是奇數(shù)，則方程沒有整數(shù)根”正確的假設(shè)是方程存在實(shí)數(shù)根x0為（A．整數(shù)）B．奇數(shù)或偶數(shù)C．正整數(shù)或負(fù)整數(shù)D．自然數(shù)或負(fù)整數(shù)10.平面向量與的夾角為60°，=(2,0)，||=1，則|+2|（A．）B．2C．4D．1211.如圖，△ABC內(nèi)接于圓⊙O，CT切⊙O于C，∠ABC=100°，∠BCT=40°，則∠AOB=（A．30°）B．40°C．80°D．70°12.（幾何證明選做題）若A，B，C是⊙O上三點(diǎn)，PC切⊙O于點(diǎn)C，∠ABC=110°，∠BCP=40°，則∠AOB的大小為______．13.函數(shù)y=（43）x，x∈N+是（14.有以下四個結(jié)論：①lg（lg10）=0；）A．增函數(shù)B．減函數(shù)C．奇函數(shù)D．偶函數(shù)②lg（lne）=0；③若e=lnx，則x=e2；④ln（lg1）=0．其中正確的是（A．①②）B．①②③C．①②④D．②③④15.對某種花卉的開放花期追蹤調(diào)查，調(diào)查情況如表：花期（天）11～1314～1617～1920～22個數(shù)20403010則這種卉的平均花期為______天．16.已知下列命題（其中a，b①若一條直線垂直于一個平面內(nèi)無數(shù)條直線，則這條直線與這個平面垂直；②若一條直線平行于一個平面，則垂直于這條直線的直線必垂直于這個平面；③若a∥α，b⊥α，則a⊥b；④若a⊥b，則過b有且只有一個平面與a垂直．上述四個命題中，真命題是（）A．①，②B．②，③C．②，④D．③，④B．總體容量越小，估計越精確C．樣本容量越大，估計越精確D．樣本容量越小，估計越精確18.若一元二次方程x2+（a-1）x+1-a2=0有兩個正實(shí)數(shù)根，則a的取值范圍是（）B．(-∞，)∪[1，+∞)C．(-1，]D．[，1)19.如圖，已知PA是圓O的切線，切點(diǎn)為A，PO交圓O于B、C兩點(diǎn)，PA=3，PB=1，則∠C=______．20.設(shè)S(n)=1n+1n+1+1n+2+1n+3+…+1n2，則A．S(2)=12+13B．S(2)=12+14C．S(2)=1+12+13+14D．S(2)=12+13+14（）21.從集合55個數(shù)的任兩個數(shù)之和都不等于11，則這樣的子集有______個．22.若數(shù)列{an}是等差數(shù)列，對于bn=1n(a1+a2+…+an)，則數(shù)列{bn}也是等差數(shù)列．類比上述性質(zhì)，若數(shù)列{cn}是各項(xiàng)都為正數(shù)的等比數(shù)列，對于dn＞0，則dn=______時，數(shù)列{dn}也是等比數(shù)列．23.證明：等腰三角形底邊上任意一點(diǎn)到兩腰的距離之和等于一腰上的高．24.以數(shù)集形D．梯形25.已知集合A={2，x，y}，B={2x，y2，2}且x，y≠0，若A=B，則實(shí)數(shù)x+y的值______．二.語文題庫(共20題)1.根據(jù)文意，在橫線上填寫相關(guān)的內(nèi)容。德和藝術(shù)為基石，講究的是善，所以中國人在求真之外，還重視善的成分，如果決算和預(yù)算不一致，就會以寬容之心相待，說_____________。2.下列各句中，沒有錯別字的一項(xiàng)是沖頭頂；然后逐漸發(fā)散到四肢，身心隨之發(fā)燙，慷慨豪邁之情猶然而生。B．目前，出口疲軟，消費(fèi)坐享其成，那只能虛度光陰。D．在驕陽的曝曬下，牽?；ㄙ绕煜⒐模廊私队咕霟o力，矜持的牡丹也耷拉下了高貴的頭顱，失去了先前的神采。3.下列文學(xué)常識有誤的一項(xiàng)是百”，相傳為孔子所作，共收錄從西周初年到戰(zhàn)國末期的詩歌305篇，是我國文學(xué)現(xiàn)實(shí)主義的源頭。感受到花草的色和香，更能被一種深遠(yuǎn)的意境所吸引。D．朱自清是現(xiàn)代著名的散文作家、學(xué)者，著4.以下對文學(xué)常識的闡述不正確的一項(xiàng)是：A．朱自清，原名自華，字佩弦，號秋實(shí)，毛澤東同志曾用“寧可餓死，不領(lǐng)美國救濟(jì)糧”贊揚(yáng)其民族氣節(jié)。B．李樂薇是臺灣現(xiàn)代散文作家，文筆清新，語20篇，是共523371511最重要的一篇。5.解釋下列詞語的含義。①彷徨：________________________________②彳?。篲_______________________________③惆悵：________________________________④頹圮：________________________________6.在橫線處寫出詩文原句。①②星垂平野闊，③登東皋以舒嘯，臨清流而賦詩。休。也；，。滅六國者六國也，非秦，④兩情若是久長時，7.填入下面橫線處的句子，與上下文銜接最恰當(dāng)?shù)囊痪涫俏也挥浀糜斜饶翘旄邓{(lán)更清新的黎明了！太陽剛從蒼蒼的山巔后面露出來，，使人感到一種甜美的倦意。A．山頂?shù)陌自谱兂闪嗣倒迳?，又從玫瑰在一起C．空氣里彌漫著破曉的寒氣，草上也蒙蓋了灰色的露水D．它射下了幾道微微溫暖的光線，像火的帶子一般貫穿了整個樹林8.下列詞語中沒有錯別字的一組是設(shè)伏口訥聲名鵲起尺牘佝僂竭澤而魚軔惶悚湊和恣意妄為D．松弛親睞岑寂義憤填膺9.寫出下列歇后語的后半部分。例：外甥打燈籠——照舅（舊）（1）公雞戴帽子——_______（2）和尚打傘——_______（3）紙糊凳子——_______（4）拉胡子過大街——_______（5）狐貍吵架——_______（6）狗吃黃瓜——_______10.補(bǔ)寫出下列名句名篇中的空缺部分。(5分)笛（城。1）誰家玉暗飛聲？散人東風(fēng)滿洛，?(李白《春夜洛城聞笛》)（2）也。，，自然之理(歐陽修《伶官傳序》)。(龔自珍《己亥雜詩》)符合上下文的特定語境。作家筆下優(yōu)美的寫景散文，好似熱情而閱歷豐富的導(dǎo)游：它會帶你去攀登泰山那回環(huán)曲折的盤道；____________；___國的山山水水多么富有迷人的魅力??！業(yè)的機(jī)器人。8個字）東、中部、關(guān)西等地區(qū)8月4日的氣溫均在39.5攝氏度以上。靜岡縣4日正午的最高氣溫達(dá)39.8攝氏度以上。________________________________________________________________________________14.對下列句子的分析有誤的一項(xiàng)是[]B．“人類的血戰(zhàn)前行的歷史，正如煤的形成，當(dāng)時用大量的木材，結(jié)果卻只是一小塊，但請愿是不C．“我將深味這非人間的濃黑的悲涼；以我的最大哀痛顯示于非人間?！保ò选拔摇笔?zhàn)友的苦D．“真的猛士，敢于直面慘淡的人生，敢于正視淋漓的鮮血。這是怎樣的哀痛者和幸福者？”（真15.補(bǔ)寫出下列名篇名句中的空缺部分。(只選三小題)(6分)(1)此情可待成追憶，(2)釘頭磷磷，（3）桂棹兮蘭槳，。渺渺兮予懷，望美人兮天一方。（蘇軾《赤壁（4）吾嘗跂而望矣，。（《荀子·勸（5）人生如夢，（6）。(蘇軾《念奴嬌》)，二三其德。16.寫出下列歇后語的下半部分。例：外甥打燈籠——照舅（舊）（1）閻王貼告示——___________（2）豬鼻子里插蔥——___________（3）豬八戒照鏡子——___________（4）小孩子放炮仗——___________17.下列各句中劃線的成語的使用，恰當(dāng)?shù)囊豁?xiàng)是[A．外出旅游，異地的風(fēng)物固然讓人迷醉，可是在商場購物時導(dǎo)購的勸說卻常常使人不厭其煩，興味]索然。B．汽車經(jīng)銷商雖然不希望看到市場的大起大落，卻歡迎大浪淘沙式的競爭，因?yàn)檫@將使汽車市場更加規(guī)范有序。年最后一天俄政府決定修建“泰納線”。有了新的認(rèn)識。18.下列各組詞語中有錯別字的一組是A．具備萬事俱備風(fēng)聲談笑風(fēng)生B．求實(shí)實(shí)事求是世故人情事故C．陳規(guī)墨守成規(guī)精心漫不經(jīng)心D．直接直截了當(dāng)劇增與日俱增19.為下面短文中畫線處選擇一個貼切的比喻()年的五彩夢B．密封的四堵墻C．繡著紅花的藍(lán)布裙D．二姐出嫁時坐的彩轎。下列復(fù)句的類型，將代表復(fù)句類型的字母填在橫線上。①與其說她愛阿米爾，還不如說她對他有一種敬重、依賴及信托的混合感情。________②當(dāng)財富積累到一定程度，很多人不但沒有享受到舒適的生活，反而整日提心吊膽。________三.英語題庫(共20題)1.Thereasonwhyhecamelatewas_____hewascaughtinaheavyrain.2.Itwaswhathemeantratherthanwhathesaid______annoyed3.__________goshoppingwithus?[]A.WhataboutB.HowaboutC.Whydon'tyouD.Whynotyou4.Withthicksnow_____theground,ourcitylooksmorebeautiful.5.Sarah,hurryup.I'mafraidyoucan'thavetimeto______beforetheparty.A.getchangedB.getchangeC.getchangingD.gettochange6.Thereasonwhyhefailedis_____hewastoocareless.7._____itistogoforahikeinsuchlovelyweather!8.AllbutTom___thatfilmbefore.A．hasbeenB．haveseenC．mustseeD．hadseen9.Afterhebecameconscious,heremembered____and____ontheheadwitharod.[A.toattack;hitB.tobeattacked;tobehit]C.attacking;behitD.havingbeenattacked;hit10.IregretregrettedyouthatTomfailedtheexams.Heyouradvice.11.CuiJianpingwhogavehislifetosaveagirlinAmericatenyearsagowas_____honourtoourschool.Amemorialisheldhereeveryyearin_____honourofhim.12.Noonelikes_____.A.toplayatrickonB.toplayatrickC.tobeplayedatrickD.tobeplayedatrickon13.閱讀理解。ItwasatleasttwomonthsbeforeChristmaswhennine-year-oldRosetoldherfatherandmethatshewantedanewbicycle.AsChristmasdrewnearer,herdesireforabicycleseemedtofade,orsowethought.Weboughtthelatestrage,BabySitter'sClubdolls,andadollhouse.Then,muchtooursurprise,onDecember23rd,shesaidthatshe"reallywantedabikemorethananythingelse."Itwasjusttoolate,whatwithallthedetailsofpreparingChristmasdinnerandbuyinglast-minutegifts,totakethetimetoselectthe"rightbike"forourlittergirl.SoherewewereChristmasEvearound9p.m.,withRoseandhersix-year-oldbrother,Dylan,nestledsnugintheirbeds.Nowwecouldonlythinkofthebicycleandthedisappointmentofourchild."WhatifImakealittlebicycleoutofclay(泥)andwriteanotethatshecouldtrade(互相交換)theclaymodelinforarealbike?"Herdadasked."Thisisanexpensiveitemandsheis'suchabiggirl,'itwouldbemuchbetterforhertopickitout."Sohespentthenextfourhourspainstakinglyworkingwithclaytomakeatinybike.OnChristmasmorning,wewereexcitedforRosetoopenthelittlehearshapedpackagewiththebeautifulredandwhiteclaybikeandthenote.Finally,sheopeneditandreadthenotealoud."DoesthismeanthatItradeinthisbikethatDaddymademeforarealone?"Beaming,Isaid,"Yes."Rosehadtearsinhereyeswhenshereplied,"IcouldnevertradeinthisbeautifulbicyclethatDaddymademe.I'dratherkeepthisthangetarealbike."Atthatmoment,wewouldhavemovedheavenandearthtobuyhereverybicycleontheplanet!1.Choosetherighttimeorderofthefollowingevents.a.Thegirlaskedforanewbike.b.Thegirlopenedthelittleheartshapedpackage.c.Theparentsboughtthegirlamodernandpopulardoll.d.Thefathermadethegirlabikewithclay.e.Thegirlwouldratherkeeptheclaybikethangetarealone.[b,c,e,d]A.a,B.a,c,d,b,eC.a,c,b,d,eD.a,b,d,c,e2.Whichofthefollowingstatementsistrueaccordingtothepassage?[]A.Theparentswantedthegirltohavetheclaybikeforever.B.Tearswereinthegirl'seyesbecauseshedidn'tlikethepresentatall.C.Thegirlneverlostherdesireforabike.D.Theparentspaidlittleattentiontothedaughter'sdesireforabike.3.WhydidDadmaketheclaybicycle?[]A.Hewantedhisdaughtertobuyarealone.B.Hedidn'twanttodisappointhisdaughter.C.Hethoughthisdaughterwouldlikeit.D.Hewantedtogivehisdaughterasurprise.4.Whatcanbeinferredfromthelastsentence?[]A.Theparentswerenothappyandencouraged.B.Theparentsdidn'tfeelcomfortableandrelaxed.C.Theparentsweremovedandfeltproudofthegirl.D.Theparentsfeltdisappointedandsorryforthegirl.14.單詞拼寫。1.Thosevisitorsstoodnearthetraininthestation,wgoodbye.2.Ithinkthejobsuitsyou,soyoushoulda3.Themanagertoldusthatthecorporationcouldn’taffordtopayitsworkerssuchlarge?.4.Myunclemarriedanurse,areallyverybeautifulbride.Wehadaverygoodtimeattheweddingrforitrightaway.s.5.Childrenshouldnotbeallowedtowatchv6.Herlittlesontoldmethatfiveplussixmovies.(等于)eleven.7.8.WithagoodknowledgeofEnglish,wecanlearnmoreaboutWestern9.Peoplewhoarevery(技巧嫻熟的)workveryhard.(粘的)rice.(幸運(yùn)的是),shepassedtheveryimportantexam.(文化).10.Thiskindoffoodismadeofakindof15.—DoremembertosendthelettertoTom.—Yes,_____.16.Somedayastrangerwillreadyoure-mailwithoutyourpermissionorscantheWebsiteyou'vevisited，Orperhapssomeonewillcasuallyglancethroughyourcreditcardpurchasesorcellphonebillstofindoutyourshoppingpreferencesorcallinghabits.Infact,it'slikelythatsomeofthesethingshavealreadyhappenedtoyou.Whowouldwatchyouwithoutyourpermission?Itmightbeaspouse,agirlfriend,amarketingcompany,aboss,acoporacriminal.Whoeveritis,theywillseeyouinawayyouneverintendedtobeseen----the21stcenturyreplacementofbeingcaughtnaked.Psychologiststellusboundariesarehealthy,thatit'simportanttorevealyourselftofriends,familyandloversinstages,atappropriatetimes.Butfewboundariesremain.Thedigitalbreadcrumbs(碎屑)youleaveeverywheremakeiteasyforstrangerstoreconstructwhoyouare,whereyouareandwhatyoulike.Insomecases,asimpleGooglesearchcanrevealwhatyouthink.Likeitornot,increasinglyweliveinaworldwhereyousimplycannotkeepasecret.Thekeyquestionis:Doesthatmatter?FormanyAmericans,theanswerapparentlyis"no."WhenopinionpollsaskAmericansaboutprivacy,mostsaytheyareconcernedaboutlosingit.Asurveyfoundastrongbadfeelingaboutprivacy,with60percentofrespondentssayingtheyfeeltheirprivacyis"slippingaway,andthatbothersme."Butpeoplesayonethinganddoanother.OnlyatinypartofAmericanschangeanybehaviorsinanefforttopreservetheirprivacy.Fewpeopleturndownadiscountattollbooths(收費(fèi)站)toavoidusingtheEZ-Passsystemthatcantrackautomobilemovements.Andfewturndownsupermarketloyaltycards.PrivacyeconomistAlessandroAcquistihasrunaseriesofteststhatrevealpeoplewillgiveawaypersonalinformationlikeSocialSecuritynumbersjusttogettheirhandsonapitiful50-cents-offcoupon(優(yōu)惠卷)。Butprivacydoesmatter----atleastsometimes.It'slikehealth:Whenyouhaveit,youdon'tnoticeit.Onlywhenit'sgonedoyouwishyou'ddonemoretoprotectit.51.Whatdoestheauthormeanbysaying"the21stcenturyreplacementofbeingcaughtnaked"?A.People'spersonalinformationiseasilyaccessedwithouttheirknowledge.B.Inthe21stcenturypeopletryeverymeanstolookintoothers'secrets.C.Peopletendtobemorefrankwitheachotherintheinformationage.D.Criminalsareeasilycaughtonthespotwithadvancedtechnology.52.Whatwouldpsychologistsadviseontherelationshipsbetweenfriends?A.Friendsshouldopentheirheartstoeachother.B.Friendsshouldalwaysbefaithfultoeachother.C.Thereshouldbeadistanceevenbetweenfriends.D.Thereshouldbefewerargumentsbetweenfriends.53.Whydoestheauthorsay"weliveinaworldwhereyousimplycannotkeepasecret"？A.Modernsocietyhasfinallydevelopedintoanopensociety.B.Peopleleavetracesaroundwhenusingmoderntechnology.C.Therearealwayspeoplewhoarecuriousaboutothers'affairs.D.Manysearchenginesbenefitfromgivingawaypeople'sidentities.54.WhatdomostAmericansdoasforprivacyprotection?A.Theychangebehaviorsthatmightdisclosetheiridentity.B.Theyusevariousloyaltycardsforbusinesstransactions(交易)..C.Theyrelymostandmoreonelectronicdevices.D.Theytalkalotbuthardlydoanythingaboutit.55.Accordingtothepassage,privacyislikehealthbecause___.A.peoplewillmakeeveryefforttokeepit.B.itsimportanceisrarelyunderstoodC.itissomethingthatcaneasilybelostD.peopledon'ttreasureituntiltheyloseit17.—Rememberthefirsttimewemet,Tom?—OfcourseIdo.You______forhelpintheKnee-deeppond,anditwasreallyfunny.18.ImetJenniferinthestreet_____andshetoldmeshewouldgotostudyabroadnextmonth.19.Wehavelearned3,000words_____.20.We'llneverforgetourfirstsportsmeetinhighschool-theFourthSportsFestivalofourschool,_____allofusenjoyedourselvessomuch.第1卷參考答案一.數(shù)學(xué)題庫C1：x216+y24=1；曲線C1為中心是坐標(biāo)原點(diǎn)，焦點(diǎn)在x軸上，長半軸長是4，短半軸長是2的橢圓；曲線C25的圓（2C1：x216+y24=1與xm＞0，所以點(diǎn)P分）顯然切線l的斜率存在，設(shè)為k，則切線l的方程為由曲線C25的圓得|k+2-4k|k2+1=5，解得l的方程為y=3±102(x-4)（3分）2.答案：如圖，OC=OD+OE=λOA+μOB，在△OCD中，∠OD=30°，∠OCD=∠COB=90°，可求|OD|=4，同理可求|OE|=2，∴λ=4，μ=2，∴λ+μ=6．3.答案：161.8或138.24.答案：D5.答案：因?yàn)锳，B，C，D四點(diǎn)共圓，所以∠DAB=∠PCB，∠CDA=∠PBC，因?yàn)椤螾為公共角，所以△PBC∽△PAD，所以BCAD=PBPD=13．故為：13．6.答案：根據(jù)題意，甲取得一勝一負(fù)包含兩種情況，甲勝乙負(fù)丙，概率為：0.8×0.3=0.24；甲勝丙負(fù)乙，概率為：0.2×0.7=0.14；∴甲取得一勝一負(fù)的概率為0.24+0.14=0.38故為0.38AB所在直線為x軸建立直角坐標(biāo)系設(shè)橢圓方程為：x2a2+y2b2=1(a＞b＞0)且c=a2-b2------（3分）因?yàn)榻裹c(diǎn)A的正西方向橢圓上的點(diǎn)為左頂點(diǎn)，所以a-c=20------（5分）又|AB|=2c=40，則c=20，a=40，故b=203------（7分）所以魚群的運(yùn)動軌跡方程是兩島收到魚群反射信號的時間比為A，B兩島的距離分別為5k+3k=2×40=80?分）即魚群分別距A，B兩島的距離為50海里和30海里．------（14分）8.答案：B9.答案：A10.答案：B11.答案：C12.答案：∵PC切⊙O于點(diǎn)為圓的半徑∴OC⊥PC，即∠PCO=90°∵∠BCP=40°∴∠BCO=50°由弦切角定理及圓周角定理可知，∠BOC=2∠PCB=80°∵△BOC中，∠OBC=50°，∠ABC=110°∴∠OBA=60°∵OB=OA∴∠AOB=60°故為：60°13.答案：由正整數(shù)指數(shù)函數(shù)不具有奇偶性，可排除C、D；因?yàn)楹瘮?shù)y=（43）x，x∈N+的底數(shù)43大于1，所以此函數(shù)是增函數(shù)．故選A．14.答案：A15.答案：由表格知，花期平均為12天的有20個，花期平均為15天的有40個，花期平均為18天的有30個，花期平均為21天的有10個，∴這種花卉的評價花期是12×20+15×40+18×30+21×10100=16，故為：16有”才正確；故①錯誤；②垂直于這條直線的直線與這個平面可以是任何的位置關(guān)系，有可能是平b有且只有一個平面與a垂直，顯然正確．故選D．17.答案：∵用樣本頻率估計總體分布的過程中，估計的是否準(zhǔn)確與總體的數(shù)量無關(guān)，只與樣本容量在總體中所占的比例有關(guān)，∴樣本容量越大，估計的月準(zhǔn)確，故選C．18.答案：C19.答案：∵PA切圓O于A點(diǎn)，PBC是圓O的割線∴PA2=PB?PC，可得（3）2=1×PC，得PC=3∵點(diǎn)O在BCBC是圓O中，根據(jù)正弦定理，得PAsinC=PCsin∠PAC即3sinC=3sin(90°+C)，整理得tanC=33∵∠C是銳角，∴∠C=30°．故為：30°20.答案：∵S(n)=1n+1n+1+1n+2+1n+3+…+1n2，當(dāng)n=2時，n2=4故S(2)=12+13+14故選D21.答案：集合{1，2，…，10}中和是11的有：1+10，2+9，3+8，4+7，5+6，選出5個不同的數(shù)組52故這樣的子集有32個故為：3222.答案：在類比等差數(shù)列的性質(zhì)推理等比數(shù)列的性質(zhì)時，我們一般的思路有：由加法類比推理為乘法，由減法類比推理為除法，由算術(shù)平均數(shù)類比推理為幾何平均數(shù)等，故我們可以由數(shù)列{cn}是等差數(shù)列，則對于bn=1n(a1+a2+…+an)，則數(shù)列{bn}也是等差數(shù)列．類比推斷：若數(shù)列{cn}是各項(xiàng)均為正數(shù)的等比數(shù)列，則當(dāng)dn=nC1C2C3Cn時，數(shù)列{dn}也是等比數(shù)列．故為：nC1C2C3Cn23.答案：證明見一點(diǎn)為，則到的距離；到的距離；到的距離．因?yàn)椋?，結(jié)論成立．24.答案：∵數(shù)集A={a，b，c，d}中的四個元素互不相同，∴以數(shù)集A={a，b，c，d}中的四個元素為邊長的四邊形，四條邊不相等∴四邊形只可能是梯形故選D．25.答案：因?yàn)榧螦={2，x，y}，B={2x，y2，2}且x，y≠0，所以x=y2y=2x，解得x=14y=12，所以x+y=34．故為：34．二.語文題庫1.答案：預(yù)算時用心估算、執(zhí)行時格外小心的結(jié)果；相差一點(diǎn)總是難免的，只要基本符合就可以了。（意思符合即可）2.答案：C解析：A油然而生B立竿見影，D慵倦3.答案：B4.答案：C、5.答案：①彷徨：走來走去，猶豫不決，不知往哪個方向去。②彳?。鹤咦咄Ｍ５臉幼?。③惆悵：傷感，失意。④頹圮：坍塌，破敗。6.答案：①聊乘化以歸盡，樂夫天命復(fù)奚疑。②月涌大江流，名豈文章著。③族秦者秦也，非天下也。④又豈在朝朝暮暮。解析：背誦名句名篇時，既要能夠熟練背誦，還要落實(shí)每個字的字形。尤其要注意那些容易寫錯的字，如③中的“族”。7.答案：B解析：A、C兩項(xiàng)的主語和前后文內(nèi)容不銜接，D