LEAF=2LBAC=90°.…2分(2)连接AC,作DF⊥AB于F,交AC于E..LAEG=∠EAF=∠AFC=90°四边形AEGF是矩形.。D(m,牙m2+名m-4),…4分…3分AE=AF=AD、四边形AEGF是正方形；…4分设直线AC的函数表达式为y=k:+b.(2)MN2=NF+FH.……5分-3k+b=0,4理由：连接NH,解，得k=子,△AFH由△AEM旋转而成.b=4.b=-4.△AFH≌△AEM.4直线AC的函数表达式为y=一了x-4,AM=AH,EW=FH.…6分由(I)∠EAF=90°，AE=AFB(m-号m-4).…5分∴.LAFH=∠AFE=45°.LNFH=90°.s=号m-4小-传+m-小=音mr-4nm.NH=NF'+FH:.…7分AM =AH,D∴5a=DE0A在△AMN和△AHN中，∠MAN=NAH=45,AN =AN,.△ANa△AHN.…8分=-2m2-6m...MN=NH.:Saw2AB.0C2×4×4=8..MN2=WF2+FH3…9分(3)设AD=x,则BG=x6、CG=x一4，S=-2m2-6m+8=-2m+2+克.2·…7分在RI△BCG中，…8分BC2+CG-BC',即(x-6)+(x-4)=100.当m=时，S空2“解得x=12,=-2(舍去)，4.AD=12.……10分当m=时，y=号m+号m-4=号x+号×引-4=-5:AE=AF=AD=12,∠EAF=90°，小D(←弓，-5片…9分.EF=√AE+AF=√122+12=12√2.(3)存在点P和点Q,使以点A,C,P,Q为顶点的四边形是以AC为对角线的菱形.·四边形AEGF是正方形.…10分·.AF∥EB.8∴.△BEaM~△AFM.理由如下：揽物线为y=分女+学-4，对称轴为直线x=-山...MF=2EM.设P(-1.n).以A,C,P,Q为顶点的四边形是以AC为对角线的菱又EF=EM+MF-I2√2形，EM=4√2，MF=8√2.t11分PA=PC…11分设NH=y,在R△NHF中，即：PA=PC,NH2=NF+FH',即y=(82-y)+(4√万).(-1+3)》2+n=1+(n+4)月.…12分解得y=5√互.MN=WH=5√2.…12分.n=-1381…13分28.解：0令y=0,得+号-4=0，13P(-1,-8）·解，得x=-3,=1.存在点P和点Q,使以点A,C,P,Q为顶点的四边形点A,B的坐标分别为A(-3,0),B(1,0）.…2分是以AC为对角线的菱形，点P的坐标为(1，号)。令x=0,则女+3-4=-48…14分C(0,4).…3分数学（一）第3页（共4页）数学（一）第4页（共4页)

示2022届普通高校招生全国统一考试NT精准考点检测卷（二）英语试卷（全国卷）注意事项：1.考试时间为120分钟，满分150分。2.答题前，考生务必将自己的姓名、准考证号填写在答题卡相应的位置。3.全部答案在答题卡上完成，答在本试卷上无效。第一部分听力（共两节，满分30分）第一节（共5小题；每小题1.5分，满分7.5分）听下面5段对话。每段对话后有一个小题，从题中所给的A、B、C三个选项中选出最佳选项，并标在试卷的相应位置。听完每段对话后，你都有10秒钟的时间来回答有关小题和阅读下一小题。每段对话仅读一遍。1.When is the woman going to take her holiday?A.In July.B.In August.C.In September.2.What are the speakers probably preparing for?A.A party.B.A dinner.C.A camping trip.3.Why is Dave staying at his brother's house?A.His brother invited him.B.His brother's house is new.C.His house has been painted recently4.What is the probable relationship between the speakers?A.Colleagues.B.Teacher and student.C.Doctor and patient.5.What is the man's opinion on tipping?A.It is offered for good service.B.It is a part of the culture.C.It is the guarantee of good service.第二节（共15小题；每小题1.5分，满分22.5分）听下面5段对话或独白。每段对话或独白后有几个小题，从题中所给的A、B、C三个选项中选出最佳选项，并标在试卷的相应位置。听每段对话或独白前，你将有时间阅读各个小题，每小题5秒钟；听完后，各小题将给出5秒钟的作答时间。每段对话或独白读两遍。听下面一段对话，回答第6和第7两个小题。用份6.What is the weather like now?A.Sunny.B.Foggy.C.Windy.7.Where are the speakers?:意A.At a hotel.B.At an airport.C.At a taxi station.听下面一段对话，回答第8至第10三个小题。8.Whom is the dining hall on the second floor for?A.All the students.B.All the teachers.C.The staff of the hall.9.Where can the woman see the menu?A.On the dining table.B.By the service windowC.In the Service Counter.NT精准考点检测卷·英语（二）第1页共8页

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测试中，该团队发现芒果可以直接感知这种光，并产生内部信号通路。perceive与produce构成动作上的先后关系。55.D。本文讲述了蓝光对芒果的影响，colored符合语境。第二节主题语境：人与自我一一做事本文是记叙文。文章讲述了第一份兼职给作者带来的收获。56.It。考查it的用法。设空处作形式主语，真正的主语是to start off,.故填It。57.patience。考查名词。设空处与practice一起作并列主语，应用名词。58.an。考查冠词。设空处表示泛指，且限定ice cream store,故填an。59.recommended。考查一般过去时。设空处表示的动作发生在过去，应用一般过去时。60.working。考查动词-ing形式。设空处作介词of的宾语，应用动词-ing形式。本句中learnthe ropes of sth意为“学做某事的程序”。61.frightened。考查形容词。设空处作表语，意为“害怕的”，故填frightened。62.Gradually。考查副词。设空处修饰整个句子，故填副词。63.myself。考查固定搭配。by oneself意为“独自”，符合语境。64.raises。考查名词复数。afew后接可数名词复数，raise在此处意为“加薪”。65.for。考查固定搭配。thankful for sth意为“感激某事”。

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大一轮复学案答案精解精析赋a故点A到面B,D,EF的距离d=B,A·nl3=1.故选A.(2)E元.B=(EA+Ad+D心)·(A市-AB〉53(分应而记-)·（市-蓟22解析由题意，AB=AD=2,AA,=3,∠DAB=∠DAA1=∠BA4,=60°，=(号}证})而3.A取BD中点为0，连接A0,C0,则A0」成=花-市店-市，记=硒+动BD,CO⊥BD,又面ABD⊥面CBD且交线为BD,AOC+,面ABD,成，C-(兮话-）·(B+市+所以A0⊥面CBD,OCC面CBD,则A0-+1+1-1×1×⊥C0.)=迹+店.市+应，就设正方形的对角线长度为2，如图所示，建立空间直角坐标系，则A(0,0,1),B(1,0,0),C(0,1,0),D(-1,0,0),=2市-市动不迹店所以AB=(1,0,-1),Ci=(-1,-1,0),变式1证明由本例知衣子（衣+动。市}应-动动号×21w通动意高片=c-0,×2x2xcos60°+-×2×3×c0s60°-22-2所以异面直线AB与CD所成角的余弦值9所以底.店=(abac-)×3×c0s60°=2为？故选A又-√)故E武⊥A店，即EG⊥AB.√硒-应=，变式2解析由本例知花：-12*-b+21AC1=√(AB+Ad+AA)24.5解析由直线l∥面a,得m上n,所=√2+2+3+2X(2x2Xc0s60°+2x3xc0s60°+2x3xc0s60)以m·n=0,即8+2-2z=0,解得z=5.=√331宁解得：2e·acos(应，AG=DE.AC考点号（负值含去)，即8G的长为号DEIIACI例1证明以D为坐标原点，Di,D元DG93IT的方向分别为x轴、y轴、z轴的正方向建变式3，析易如心宁+宁c,店-d2×3√1122立如图所示的空间直角坐标系，可得设异面直线AC,与DE所成的角为日，则D(0,0,0),C(0,2,0),E(2,0,2),F(0,1,+成=-b+2,w=lom远aC1-3四2,c(00,2),M0,号，1，N1,02,所以cos(AG,C)=AG.C应3,因第六节空间向量在立体则D元=(0,2,0)，D2=(2,0,2)IACIICEI几何中的应用为异面直线所成角的范园是(0，]，所知识梳理lu·vl以异面直线AG与CE所成角的余弦值n1=入n2n1·n2=0n·m=0lullyl为号lw·nllIn,·n2llulInl In,IIn2l迁移应用课前自测4.A建立如图所示的空间直角坐标系，且1.VV××设n,=(x,y,z)为面CDE的法向量，AB=BC=CD=DE=EF=AF=1,2.A连接AB1,建立如图所示的空间直角则m。·DC=2y=0,则y=0,令z=-1,1√3坐标系，则D,(0,0,0),B,(1,1,0),A(1,则A(0,0,0),B(1,0,0),F(m·Di=2x+2z=0,、2200.分1得x=1,则n。=(1,0,-1),放-(11,0,-(0,1,又1，}，，则=0，又直线MNt面CDE,所以MN∥面CDE.设P(,其中-子a号，所以-=(0,-1,1),例2证明设矩形ABCD对角线的交点为O,因为PA=PB=PC=PD,所以PO⊥(1,0,0),A=(x,y,2),设面B,D,EF的法向量为n=(x,y,z),BD,PO⊥AC,所以PO⊥底面ABCD,故可所以A店·市=，所以A店·A产的取值范围00建立如图所示的空间直角坐标系，易知(分》(B,产.n=0,2+=0,P(0,0,2),E(0,-2,0),C(1,2,0),取x=2,则y=-2,z=1,故n=(2,-2,1),D(-1,2,0),469

基础题与中考新考法·九年级·全一册·数学30°，BC长为8米，天桥的高BE为4.5米，求天桥底部AD的长度.（结果精确到0.01米.参考数据：√3≈1.73)BE第3题图4.如图，一艘货轮从港口A沿北偏东30°方向出发，在行驶1.6海里后到达点B处，之后沿正东方向行驶，当行驶到点C处时，观测到港口点A位于货轮南偏西75°方向上，求此时货轮与港口间的距离AC.(结果精确到0.1km.参考数据：sin75°≈0.97，c0s75°≈0.26，tan75°≈3.73，√3≈1.73，√2≈1.41)北东30%757C1第4题图模型3拥抱型9考模型分析5.某校数学社团的小明和小红决定用自己所学到的知识测量某塔吊AB的高度，如图，CD是该塔吊附近不远处的某建筑物，他图形实例解题方法们在建筑物CD底端D处测得塔吊顶端B的仰角为60°，在建分别解筑物CD顶端C处测得塔吊底端A的俯角为28°，已知建筑物Rt△ABC.CD的高为19米，AB⊥AD,CD⊥AD,求该塔吊AB的高度.（结Rt△DCB果精确到1米.参考数据：sin28°≈0.47，cos28°≈0.88，tan28°求解≈0.53，√5≈1.73)分别解DRt△ABC,C(F)Rt△DECE求解第5题图156

18.(12分)已知函数f(x)=log(x74)-log(a-x),且f(-1)=-1.(1)求f(x)的定义域要(2)求不等式f(2-x)≥f(2)的解集，查代0共，长，小共代0卧帕数茸，8食暗，代哥的反数喷全分的眼命直县中题命个四州杀要处不个的”男<骨要不代家面量式才式组”小道秋：州杀农京不要点的"一。县升茶要杀的"0=9“0=19.(12分)呗，同不家其目：同肤息宜床上的喷西民亲告已知数列{a的前n项和为S,且a,=1,2=an-n十1.凌函己S,门(1)求{an}的通项公式；县啦“装函煮同“益时来用(2)设6.=：求数列{b,的前n项和T20.(12分)民族要复兴，乡村要振兴，合作社助力乡村产业振兴，农民专业合作社已成为新型农业经营主体和现代农业建设的中坚力量，为实施乡村振兴战略做出了巨大的贡献.某农民专业合作社为某品牌服装进行代加工，已知代加工该品牌服装每年需投入固定成夺0万元，每代加分r+2,0长10工x万件该品牌服装，需另投人f(x)方，且f(x)=根据市14x+450115,10

八年级数学（北师大版）0000060006000000∠ADB=80°-x∴.PP'=AP=5,∠APP'=60°若∠BEC=∠ADB,在△BPP'中，则x°十40°=80°-x°，解得x°=20°，PP'=5,BP=12,BP'=13,在行移动AD的过程中，存在某种情况，..PP2+BP2=BP2,使∠BEC=∠ADB,此时∠ADB=60°，∴△BPP'为直角三角形，∠BPP=90°，专题训练（三）巧用移和旋转解决∴.∠APB=∠APP+∠BPP'=60°+90°=150°.点P与点P'之间的距离为5，∠APB的度数图形的变换问题为150°.1.C2.解：如图，将△A'OC沿A'A的方向移，移第四章因式分解的长度为A'A,得△AQR,将△BOC沿BB'方知识回顾向移，移的长度为BB,得△BPR.①积②相同③公因式④公因式⑤不改变⑥改变⑦a+b⑧+2ab⑨-2ab⑩0重点突破反馈训练1.D2.B3.b(a+5)(a-5)4.(x+1)(x-2).OP=OQ=2,∠POQ=60°，5.3(a+2)26.A7.B∴.连接PQ,则PQ=2.针对训练又QR+RP=OC+OC=CC=2.P,R,Q三，点共线.在等边三角形POQ中，1.D2.D3.D4.A5.B6.C7.B8.D9.A10.BSAAOB'十S△BPR+S△ROA11.m(m-2)=S△A0B+SAOc+S△oA'

、·8B=C∠EAB=30°，连接EC,4思路分析为什么作：要证△ACE是等腰三角形，没有与其相关的条件，第5题解图怎么作：∠ACB=90°，DE是⊙0的切线，∴.△AEB∽△ACD故连接OC.AE_AC_√3得到什么：△EC0△ACB.·ABAD-2:∠EAB=∠DAC=30°，∴、∠EAC=∠EAB+证明：如解图，连接OC.∠BAC=∠BAC+∠CAD=∠BAD..△EAC△BAD.ECAE√3BD AB 25AB=5BE=2AB三2第4题解图,∠EAB=30°，∠AEB=90°，∠ABC=30°，.DE与⊙O相切于点C,∴.OC⊥DE.∠EC0=∠ACB=90∴.∠EBA=60°..∠EBC=90°.·OF∥BC,即OE∥BC,∴.∠EOC=∠OCB..△EBC为直角三角形..OC=OB,∴.∠OCB=∠OBC在Rt△EBC中，EC=BE+BC=2,∴.∠EOC=∠OBC.∴.△ECO∽△ACB.6C紀、BD=2EC=133OC BC的3:∠ECO=∠ACB=90°，∴.∠ACE=∠BCO6.(1)∴.△ACE∽△BCO.思路分析,△BCO是等腰三角形为什么作：要证MF⊥CE,即∠FMC=∴.△ACE是等腰三角形90°，题于中无与∠FMC有关的角度，需5.思路分析要构造角进行等角转化，为什么作：要求BD的长，题于中无与BD怎么作：LECF=。LBCD,故连接AC.有关的线段长或特殊三角形，需要构造得到什么：△BMC△AFC.含BD的特殊三角形或与BD相似的特殊三角形进行转化求解，证明：如解图①，连接AC怎么作：∠ABC=30°，在Rt AACD中∠DAC=30°，故以AB为斜边作Rt△ABE,且∠EAB=30°，连接EC得到什么：△AEB一△ACD,△EACMABAD解：如解图，以AB为斜边作Rt△ABE,且第6题解图①万唯数理化QQ交流群：66843586045

BWhat does the underlined word "commenced"in Paragraph 4 mean?A\Stopped.B.StartedC AvoidedD.ChangedWhat does the authorACOVID-19 swant to show by mentioni some other European cities?spreads quickly across EuropeB.These cities als have many odondon improves its traffic by learning from themThese cities also take positive action toencourage cyeling.My husband and I visited KwaZulu-Natal years ago with friends.We sat around the firelistening to al the guests tell their tales.One of them happened to be an estate agent fromGraaff-ReinetHe talked about the Great-Karoo-telling tales of its historical significance,theamazing animals and the great beauty of the place.2On the spot,we agreed we would go and visit the area next time we were in South Africa(at the time we vwereliving in Paris).So,a few months later we did just that,and -stayed-overnighin the Drostdy Hotel in Graaff-Reinet with our two young children-that's when I remembered theKaroo of my childhood-dry and dusty with nothing in sight but tumbleweed (and theoccasional sheep.There was no way we were going-to buy one square inch of such a bare landseape.So we droveout to the first farm,Apieskloof,that we'd arranged to visit,and we just fell-in love.uned off the road and up into the mountains,the beauty of the place fully revealed itselfso unlikewhat I had always thought the Karoo to be like.We were taken by the place.4That was 20 years ago-we are celebrating our 20-year anniversary in November of this year.Wepurchased an additional ten farms to create what is Samara today.But we decided to open it upto the public in 2005 because we felt it needed to benefit society,not just ourselves.We got started inthe ecotourism business and today we are going from strength to strength.A.The grassland was green and richB.He started telling us about South Africa.The dream was reawakened and we bought the farm.D.It was a very emotional experience that brought us togetherWe started chatting with our neighbor at the next-door table.Originally,it was just a quiet and private place for the-family.CWe were attracted by the idea of returning the land to its former.greatness.There may be a new form of transport soon-flying taxis.Many of us grew upwatchingheNA and Joyti the Uing airis thatPeY-fi movies with these.Now science fiction is becoming science fact.(operate)at the Expo 2025 in Osaka.They need to work out whattaffic rules the taxislland what kind of)the pilots will need.The all-eleetric taxi with seats4five peoplecan fly as far as 241 kilomefers with a top speed of 321kph.每h以tJoby's CEO says the taxis are environmentally friendly.He also explains Japan has beenchosen as the testing centre for the taxis.92 percent of the population in Japan live in towns andcities,and Toky e of the mostes in the world.These make Japan a grearplace 7 torunthe tests,he says.The president of ANA is excited ahouteproject.He says,"ANA has about 70 years ofexperience in delivering flights gasfe).Being able to provide this rapid and sustainable way oftransport for customers 10(be)attractive and encouraging."卷（五）·英语·第2页（共2页）》

秘密★启用前韶关市2023届高三综合测试(二)英语本试卷共10页，卷面满分120分。考试用时120分钟。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、准考证号和班级填写在答题卡指定的位置上。2.选择题每小题选出答案后，用2B铅笔把答题卡对应题目的答案标号涂黑。如需改动，用橡皮擦干净后，再选涂其他答案。写在本试卷上无效。3.非选择题必须用黑色字迹的钢笔或签字笔作答，答案必须写在答题卡指定区域内的相应位置上；如需改动，先划掉原来的答案，然后再写上新答案；不准使用铅笔和涂改液。写在本试卷上无效。4.考生须保持答题卡的整洁，考试结束后，将本试卷和答题卡一并交回。第一部分阅读（共两节，满分50分）第一节（共15小题；每小题2.5分，满分37.5分）阅读下列短文，从每题所给的A、B、C、D四个选项中选出最佳选项。AStaying at home and watching Netflix is quite cozy.To help you figure outwhat to watch,we take a dive into the collection and list some options releasedin the last year or so that are well-worth a watch.Penguin Bloom (2021)95 mins,directed by Glendyn IvinNaomi Watts stars in this emotional roller-coaster of a film about a womanstruggling to recover from a catastrophic injury.After her children bring homean injured bird,her character's efforts to nurse the magpie nicknamed "Penguin"back to health unfold in parallel with her own healing journey.Metal Lords (2022)97 mins,directed by Peter SollettJaeden Martell and Adrian Greensmith play a pair of teenage friends whodecide to form a heavy metal band and enter their high school's Battle of theBands competition.What they don't expect,however,is to have their friendshiptested and to learn a lot more than about music when they recruit a shy cellistto join them.The Sea Beast (2022)115 mins,directed by Chris WilliamsChris Williams directs this animated high-sea adventure about a young girlwho boards a famous monster-hunting ship secretly,only to discover thateverything she thought she knew about monsters and hunters might be wrong.英语测试题第1.页（共10页）

21.（12分)解：（1)乙、丙、丁三人每次接到传球的概率均为二，3次传球后，事件乙、丙、丁三人均接3过传出来的球发生的概率为B=店×（付=2…3分(2)由题意知，X的可能取值为1,2,3，PX==3x=)PX=3)=Ax-号PX=2=1-P(X=)-PX=3)=.6分X的分布列如下：X123P1-92-32-9.7分EX)=1x+2x2+3x2=199.8分399(3)证明：n次传球后乙、丙、丁三人均接过他人传球，有两种情况，其一为：n-1次传球后乙、丙、丁三人均接过他人传球，这种情况的概率为P:其二是为：n-1次传球后乙、丙、丁中只有两人接过他人传球，第n次传球时将球传给剩余一人.这种情况的概率为0-P-3×)×兮9分3所以，当n≥4时，Pn=P+(1-Pn1-3×111.P、一。iP11分12分3322.（12分)解：(1)a=l,f(x)=e-lnx,x>0因为f"(x)=e”--,f"(I)=e-1,…l分因为f()=e-lnl=e,即切点为（山，C)…2分f(x)在点(L,)处的切线方程为：y=(e-1)x+1…3分(2)证明：因为f树）=ae-(a≥x>0）,…4分e设函数gx)=fa).则g'()=ae+>0(a≥x>0).e所以f'(x)在(0，十0)上单调递增…5分网为了2>0，f2定<0，所以春在Be(2ac2).使得fA=0.2ae数学答案第4页（共5页）

to promtethe law to 59 against people on the grounds of mental illness I added,"Compulsory ad-public acting as major performers,is aimed70(promote)rural art,culture and tourism,"mission to hospital under the Mental Health Act is intended to have 60 consequences forsaid Zou Fuqiao,an official of the Culture.Touris Radio.Film and Sports Bureau of Jiangtheir life,not negative ones."Luckily,what I said dawned on them,and Melissa got goodhua Yao Autonomous County.treatment第四部分写作（共两节，满分35分）P)41.A.determinedB.anxiousC.astonishedD.sure第一节短文改错（共10小题：每小题1分，满分10分）b2.A.wards项片B.countersC.officesD.cafeteria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43.A.examB.illnessC.careerD.safety10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，副除或修改。44.A.protestB.approveC.pronounceD.applaud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。5.A.laughedB.teasedC.compromisedD.begged删除：把多余的词用斜线（小）划掉。A46.A.carefreeB.happyC.strickenD.impolite修改：在错的词下划一横线，并在该词下面写出修改后的词。47.A.billsB.advertisementsC.newspapersD.notes注意：山，每处错误及其修改均仅限一词；48.A.contentB.stressedC.pleasedD.familiar2.只允许修政10处，多者（从第11处起）不计分。49.A.abuseB.depressionC.violenceD.injusticeWhen I woke up this morning,but I heard the sound of rain outside.I told to myA50.A.desiredB.agreedC.hesitatedD.failed,andmother at once.Mom said she had heard it.either.But she felt it was strange as there wouldA 51.A.checking1B.bringingC.tyingD.pickingD52.A.noddedB.changedC.comprehendedD.refusedbe no rains according to the forecast.We went to the window to have a look.There turned53.A.favourB.propose('opposeD.direct亿54，A.regardless ofout that an upstairs neighbor's solar water heater is overflowing.The neighbor must have hadB.free ofC.in case ofD.on account of55.A.investigateB.apologize('understandD).Improvethe tap turning on.but forgot to turn it off in time.So I went out and knocked the neighbor'sB56.A.adviceB.future(.identityD.appearanceB7.A.alwaysB.never('hopefullyD.potentiallydoor.Then I told the neighbor that had happened to her heater.She was gratefully to me be-么8.A.mparB.property(investmentD.benefitcause my action prevented her from waste much more water.C59.A.voreB.insure('fightD.discriminateCAearnnB.impossible('positiveD.temporary矧线第二节书面表达（满分25分）解第二节（共10小题：每小题1.5分，满分15分）假定你是校英语俱乐部负责人李华，请你给外教Joh如写一封邮件邀请他做一次关代英语阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。学与英语文”的讲座，内容包括：A report showed that a crowd of 61 (resident yof Jianghua Yao Autonomous County,1.讲座的时间和地点：Hunan Province.62 (singand danced on Saturday fo celebrate the coming of Jingzhe or2.讲座的对象和内容。the Awakening of Insects.The event 63 (ao people exhibiting their grand tra-注意：ditional costumes.singing folk songs.performing tai chi and dragon dances and dancing on1.词数100左右：Engb3hanpaddle boards or boats.impreppedtourists with the unique Yao culture.2.开头和结尾已为你写好。Lerin EnJingheis the 64 (thre solar term of the 24 terms 65 (define)by the tradi-CQclturptional Chinese calendar.It falls on March 6 and ends on March 20 this year,which means660 sharp rise in temperature and increased rainfall.The name suggests animals sleeping in一7winter 67 (awaken)by spring thunder.For farmers,it becomes a termt憾marks thestart of spring work.It is the best time for farmers to sow.so they will be busy in order tohave a harvest in autumn."The event,69 the natural landscape serving as the stage and the members of the·23-426C·【高三英语第9页（共10页）】·23-426C·【高三英语第10页（共10页）】

宁德一中2022级高二第一学期数学9月月考考卷出卷人：王艳芳审卷人：吴越2023.9.2姓名：班级：座号：一、单选题1.已知数列an},{bn}都是等差数列，且a,-b=2,42-b2=1,则a-b=（）·A.-2B.-1C.1D.22.记Sn为等比数列an}的前n项和，若S4=-5,S6=21S2,则S=（).A·120B.85C.-85D.-1203.数列{an}的前n项和为Sn=n2,若bn=(n-l0)an,则数列{bn}的最小项为()A.第10项B.第11项C.第6项D.第5项4.数列an}是等比数列，首项为a,公比为g,则a(g-1)<0是“数列{an}递减的()A.充分不必要条件B.必要不充分条件C.充分必要条件D.既不充分也不必要条件111115.已知等比数列a}的前n项和为5，若4+a于4。+a,=10,则4=l，8=（）A.10B.15C.20D.25(1）6.己知等差数列{a}的前n项和为S。，a2=2,S,=28,则数列（一一卜的前2020项和为()lan an+J2020B.201820182021A·2021C.20202019D.20207.南宋数学家杨辉在《详解九章算法》和《算法通变本末》中，提出了一些新的垛积公式，所讨论的高阶等差数到与一般的等差数列不同，前后两项之差并不相等，但是逐项差数之差或者高次差成等差数列.如数列1,3,6,10，前后两项之差组成新数列2,3,4，新数列2,3,4为等差数列、这样的数列称为二阶等差数列.现有二阶等差数列，其前7项分别为2,3,5,8,12,17,23则该数列的第100项为()A.4862B.4962C.4852D.4952S20&在等差数列@中，3是的前n项和，<0，S>0,则有限项数列。，兰，，上中，最大项和最小项分别为(）a21第1页，共4页

56-7.已知数列a满是a.(3a2一a)=2aa+2,且301三a2=1,则as=1A.一1231B.一250.517D.2618在三棱锥PABC中，△ABC为等边三角形，PA=PB,∠ACP=90°，PC十AC4,则三传锥P-ABC外接球的表面积的最小值为A32B647n.24二、选择题：本题共4小题，每小题5分，共20分。在每小题给出的选项中，有多项符合题目要求。全部选对的得5分，部分选对的得2分，有选错的得0分。9.已知函数f(x)=ax2十bx十c,其中a>b>c,若f(1)=0,则A.b2-bcB.ac-boC.ab-ac成a2>c2题卡10.已知a,b是空间中两条互相垂直的异面直线，则下列说法正确的是卡上A.存在面a,使得a二a且b⊥a上作B.存在面B,使得b二B且a∥BC.存在面Y,使得a⊥y,b⊥YD.存在面0，使得aL0,b∥0是符11.若函数y=f(x)的图象上存在两点，使得函数的图象在这两点处的切线互相垂直，则称yf(x)具有T性质，下列函数中具有T性质的是A.y=cos xB.y=In xC.y=eD.y=x22已知椭圆C号十=1(a>b>0)的左、右焦点分别为F1,F2,长轴长为4，点P(W2,1)在C外，点Q在C上，则下列说法正确的是A椭圆C的离心率的取值范围是（号，）B已知E(0,-2),当椭圆C的离心率为时，QE的最大值为3C.存在点Q使得QF·QF,=0n8部8的设小为1V70越三、填空题：本题共4小题，每小题5分，共20分。X丰0生13.已知函数f(x)=(2一2)(1十2=2)是偶函数，则实数a2量不14,抛掷一枚骰子两次，第一次得到的点数记为x,第二次得到的点数记为，则在面直角坐标系xOy中，点(x,y)到原点O的距离不大于4的概率为·U(X(13干支纪年是中国古代的一种纪年法，分别排出十天干与土二地支如下：(,4)15(,b)且天干丙0成包瘦僻在屡地支：子庭@赈已味用西®②则把天干与地支按以下方法依次配对：把第一个天干“甲”与第一个地支“子”配出“甲子”，把第二个天于“乙”与第二个地支“丑”配出“乙丑”，，若天干用完，则再从第一个天干开始循环使用，若地支用完，则再从第一个地支开始循环使用.已知2023年是癸卯年，则13°2年以后是年2Z【高三“开学考”测试卷·数学第2页（共4页）】243042Z

2W5在RAKB中，cos∠BKA=6BK2W3065所以面C与面，ADF所成锐二面角的余弦值为5(方法二)由(2)知ED⊥面ABCD,且AD⊥CD.以D为原点，DA,DC,DE所在直线分别为x,y,轴，建立空间直角坐标系易得B(2,2,0),C(0,4,0),E(0,0,2).面ADEF的一个法向量为m=01,o).设n=(x,y,)为面BEC的一个法向量，因为配=(220，正=04所以20令=1，得)=-2.所以n=(11,2)为面BEC的一个法向量.设面BEC与面ADEF所成锐二面角为O.m1则cos0=。所以面C与面0F所成锐三面角的余弦值为网同66考点：中位线、行四边形的证明、线面行、线面垂直、面面垂直、二面角21.（1)an=(n+1)2",n∈N;（2)证明见解析（1)由s,=2a-2，推得号-==1，得出数列{受表示首项为2，公差为1的等差数列，进而求得数列的通项公式；(2)由题意，求得。-2”，根据2”京>)，得到公分之a≥2，进而证得无<后手，再由”=1时，得到<手，即可得到结论（1)由题意，当n=1时，可得S=2a-4,解得a=4,又由Sn=2an-21,当n≥2时，Sn1=2an-1-2”,两式相减，得a,=24-2a-2,即0，-24=2，可得2-=-1，又由？=2，所以数列}表示首项为2，公差为1的等差数列，所以=2+(n-)=n+1,所以a,=(n+2,n∈N。

10.ABDf(x)=2r的定义域与值域均为(0，十∞)；f(x)=log2(Wx十1)的定义域与值域均为[0,十)：)-之的定义域为(-6,0U0,+e∞)，值域为0，十∞)：/)-号的定义域与值域均为（一∞，7）U(7,十∞.11.ACD因为M~N(250,o2),所以P(M>249)=P(M<251)=0.75,A正确.因为P(M<251)=0.75,所以P(249253)=0.75-0.7=0.05,若从该阿胶产品中随机选取1000盒，则质量大于253g的盒数X~B(1000,0.05),所以D(X)=1000×0.05×(1-0.05)=47.5,C正确.P(2510，阳=一录，所以直线AP与直线BP的斜*之差为及十≥2√日=号，当且仅当69,即k=}时，等号成立，所以直线AP与直线BP的斜率之差的最小值为号，B错误直线AP的(x-3),则N的坐1方程为y=k(x十3)，则M的坐标为(5,8k).直线BP的方程为y=35-V105标为6，)，所以MN1-√P+(8+≥√1-(2V8k·P-√3当且仅当k=京即=得时，等号成立，所以M1N的最小值为C正确设函数)√12+(8k动)-√161)(>日).则f)为增两数，所以f)>(专)=/9+2=30,因为C<2=23宽，所以D错误933331.该等差数列的公艺d号号3-214,7an8月计3x2an8Ha》3321.故am8计a产7tan(B-a)15.0.145433由全概率公式可得所求概率为0.1×4十3+3+0.2×4十3+3+0.15×4+3十30.145.【高三数学·参考答案第2页（共6页）】·24-29C·

20.（本小题满分12分)如图，在四棱锥P-ABCD中，底面四边形ABCD为直角梯形，AB∥CD,AB⊥BC,AB=2CD=2BC,O为BD的中点，BD=4,PB=PC=PD=√5.(1)证明：OP⊥面ABCD;(2)求面PAD与面PBC的夹角的余弦值.21.(本小题满分12分)已知直线l:(2m十1)x-(3+m)y+m-7=0.(1)m为何值时，点Q(3,4)到直线1的距离最大，并求出最大值；(2)若直线1分别与x轴，y轴的负半轴交于A,B两点，求△AOB(O为坐标原点)面积的最小值及此时直线（的方程.22.(本小题满分12分)如图，在直三棱柱ABC-A1B1C1中，AC⊥BC,AC=BC=AA1,D为A1B1的中点，G为AA1的中点，E为C1D的中点，BF=3AF,点P为线段BC1上的动点（不包括线段BC的端点).(1)若EP∥面CFG,请确定点P的位置；C(2)求直线CP与面CFG所成角的正弦值的最大值.AGB【高二数学第4页（共4页）】24139B

综上，实数a的取值范围为(-∞，-1]U[0,1].10分18.解：(1)由题意可知，关于x的不等式x2-(a十b)x十2a<0的解集为{x10,即(x-a)(.x-2)>0,…6分当a<2时，解得x2;当a=2时，解得x≠2；当a>2时，解得x<2或x>a.…10分综上可知，当a<2时，原不等式的解集为{x|x2};当a=2时，原不等式的解集为{xx≠2}；当a>2时，原不等式的解集为{xx<2或x>a}.……12分1解：1因为g)=四-（告）广-（会）广，且g)十g-)=0,所以告-号，解得a=士2，又a>0,故a=2√2.…4分(2)由1知g()=2)-(号)广，[g(x)P=2r+2-2,则f)+[g=十2-2.…6分令t=2r∈(0，+∞)，则h(t)=fx)+[g(x)]2=2+1-2,N()=2}2己，令N()=0,得1=2，当(0,2)时，N()<0,A()单调递减：当∈2(2,十o∞)时，h'(t)>0,h(t)单调递增.…9分所以当=2寸，A()取得最小值(2)=3×2号-2.即x=一号时，fx)十[g(x)的最小值为3×2-2.…12分20解：1由f)=号x2+ax2+6x,则f()=2+2ax+5,因为x=3时，f()取到极值，所以广(3)=0，解得a=一52·2分又当a=-时，f(0=2-5x+6=(-2)(3).当x<2时，f(x)>0,当23时，f(x)>0,故当x=3时，函数y=f(x)取得极值，符合题意.…4分要使f(x)在(m,m十2)上为增函数，则m十2≤2或m≥3，所以m≤0或m≥3.即实数m的取值范围为(-∞，0]U[3,十∞).…6分(2)令A()=f(x)十m,1得)=合r-号r+6,且13，故A(x)-3r-号r+6x+ml0,解得1

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三、填空题：本题共4小题，每小题5分，共20分。18设p:3m1w>2-1.则p是n252m14函数/心)--g的定义城为C1,2]重UC0,)1-2-x1点若命题3r∈[0.3]2-2r9<0为假命题，则实数的取值范周是a(日xeo,3x2X-A2016已知系数)品则不等餐2，智备解第是{a刻o四、解答题：本题共6小题，共70分。解答应写出文字说明、证明过程或演算步骤。17.(本小题满分10分)(RB-CxIx3成)6328已知集合A=(x(x+2)(8-x)≥0)，B=(x-3≤x<6)a求AU(tB,-2X利2成8-36(2)若C={xm+1≤x≤2m-1),C(A∩B),求实数m的取值范围.b女七mH17,3-3268土斤2444272七士2)21im18.(本小题满分12分)2ml已知函数f(x)-2x十2·(1)判断f(x)的奇偶性，并用定义证明；士真啦A合A（2)判断/)在区间(0，号)上的单调性，并用函数单调性定义证明，县帕能面分宗收不.(本小题满分12分)设函数y=ax2+(b-2)x+3.(1)若不等式y>0的解集为{x一14的解集：0(2)若1=1时，y=2,>0,6>0,求}+号的最小值07+bx3)0(c0b-2>0132203b-4a:-【高一第二次质量检测卷·数学第3页（共4页）】241260Z

7.已知函数f(x)=(2a-3)x十2，x≤1，完文出官血搭缩。0共，服>1a是R上的减函数，则α的取值范围是B盛若飘烟代GA0a欣后1

MA=MEMA=MB设球心为M(x,2,则M4=MC3V282=x23v2V=823W2-28可得解得R=MA32V2+2×32√388288所以，三棱锥E-ABC的外接球半径为W384元R2=4元×19π因此，三棱锥E-ABC的外接球的表面积为8819元故答案为8四、解答题：本大题共6小题，共70分，解答应写出文字说明，证明过程或演算步骤.1n+13.01-17.已知数列a,的前2项的和为S,且4方a3nan(1)证明数列n了是等比数列，并求a,的通项公式：(2)求数列a,}前n项的和Snnan=【答案】(1)证明见解析，3"32n+3(2)S.=4439【解析】an【分析】(1)利用等比数列的定义可证得结论成立，确定等比数列〔”J的首项和公比，可求得数列{a}的通项公式：(2)利用错位相减法可求得S,第15页/共23页

所以a,=2+2(n-)=2n.4044404,440444…4……5分(3R-H)HR(后2)由D知，6，-3a,-2nx3,…6份…7分3R-H2)H3-后则T,-2X1X3°+2×2X3++20n-)×3242n×3-,故3T=2X1X3+2X2×32++201-1)×3-1+2n×3”,………8分两式相减得，-2T=2+23+…+3--2n×34………………9分近线方程为bx-a=0,可得R,到=2+2×30-3-2nx31-3…10分b.1R=2e.由∠R有=-1+(1-2n3",…………11分所以渐近线方程为y=士2x所以z2,…12分+2×3"19.(本小题满分12分)(1)证明：，∠BDC=60°，BD=2CD=2,则由余弦定理得BC2=BD2+CD2-2BD·CDcos∠BDC=3,…分sinA,…1分2分则BD2=CD2+BC2,即BC⊥CD,.3分…一2分面PCD⊥面ABCD,…4分…3分且面PCDn面ABCD=CD,…5分BCC面ABCD,……4分.…6分∴BC⊥面PCD.……5分(2)如下图，因为PC⊥面ABCD,PC=√3，……6分BC⊥面PCD,AB=BD=2CD=2,7分………7分故以CD,CD,CP所在直线分别为x,y,z轴建立空间直角坐标系，一8分则AW5,2,0),D0,1,0,P0,0,N),DA=(W5,1,0),DP=0,-1,5),…8分设面PAD的法向量为m=(x,y,………9分DA·m=0,[5x+y=0,由得取y=3,得x=-1,z=l,…10分DP.m=0,y+V5z=0,!…9分m=(1,√5，)，10分…1分易得面PCD的一个法向量为n=(1,0,0),…2分..(cos(m,n)=m·n15…l1分……3分…12分…4分,面PAD与面PCD夹角的正弦值为，数学参考答策及评分标准第4页（共6页)【202.4广西夕校米-)1

第20期B1版Keys:(One possible version选择题除外)阅读训练营1-5 BBCBD完形小测1-5 CADBA6-10 CDBAC非常解读1.spend2.dead3.excited4.latest5.talking6.of7.suddenly8.paid9.means10.best第20期B2版Keys:(One possible version)知识串联【运用】1.go over2.try out for3.lose heart4.change your mind5.broke into写作一招鲜I want to be a farmerI want to be a farmer when I grow up.Maybe you will laugh at me.Let me tell you thereasons.Firstly,I like plants and animals.And I am good at biology and science.Secondly,foodsafety is a serious and important problem now.So I want to plant healthy vegetables and fruitthat are good for people's health.In order to know more about plants and animals,I need tostudy hard and go to a college.One day,I'll send people some vegetables and fruit instead ofsome medicine.People will have a healthy life!第20期B3版Keys:(One possible version)词语狙击抛砖引玉1.somewhere2.traditional3.praise4.bell1/3

B.To study sea creatures. C.To study traditional artworks. 19.What do most people of Bali do? A.Work in tourism. B.Do agricultural work. C.Produce special machines. 20.What does the speaker suggest doing especially during Chi- nese New Year? A.Drinking organic coffee. B.Doing some shopping. C.Visiting Buddhist temples.

A.will have been B.have been C.were D,would be 10.There has been positive reaction to the proposal of helping the dis- abled,the impact will be lasting especially for younger ones. A.on which B.on whom C.of which D.of whom 11.Scarcely myself comfortable and closed my eyes when I heard the sound of the alarm. A.I got B.I had got C.did I get D.had I got 12.A great deal of hotel business comes from people travelling not just for holidays but by people travelling their

ment in the brain,where memories are formed.Even though re- laxing music can be effective,silence is ideal. 38 When sur- rounded by pure silence,your consciousness has more freedom to process information.This can lead to better decision making and more acute self-awareness. 39 A recent report suggested that one in three people lose a whole year off their life due to noise.And this is linked to heart disease,sleep loss and high blood pressure. Although many find silence to be empty and boring,it is a gift and a rare thing like gold.40 When you welcome it and let it fill you,you are open to healing and wellness. A.Silence assists in self-healing. B.Silence can generate brain cells.

says about you. G.You must have a good car,so you can travel to different parts of the country.