·数学·参考答案及解析12.ABC【解析】61一(19+18+14)=10，中国队除3,x=3,人外，剩余7人得到10分，存在10名球员存在都有作出函数f(x)的图象和直线y=得分的可能，故A选项正确；中国队除3人外，剩余1x3x≠3，7人得到10分，若极差为17，则剩余7人最低得分m(m∈R),,关于x的方程f(x)=m(m∈R)恰有3为2分或最高得分为31分，这两种情况都不存在，个不同的实数根x1,x2,x3,不妨设x1
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6、【答案】B【分析】铅酸蓄电池充电时的阳极反应应为：PbS04+2H20-2e=PbO2+4H+S0427、【答案】C【分析】由图可知，图示为充电过程，镍基电极连接外接电源的正极，则放电时镍基电极为正极、右侧电极为负极；【详解】A.放电时，镍基电极为正极，阳离子向正极移动，A正确：B.放电时负极上锌失去电子发生氧化反应和溶液中氢氧根离子、碳酸根离子生成2ZnC0,·3Z(OH)2,反应为5Zn-10e+2C0}+6OH=2ZnC0,·3Zn(OH)2,B正确：C.传统的Zn金属电极在浓KOH电解液中转化为[Zn(OH)4]，故将KOH浓度由0.1molL提高至6mol/L会导致锌极被反应，Z沉积/剥离库仑效率20次循环后迅速下降，不利于该电池的充放电，C错误：D.充电时反应为放电时的相反过程，结合B分析可知，充电时2ZnC0,·3Z(OH)溶解衡正向移动，D正确：8、【答案】C【详解】A.工业上制C12要考虑原料成本，一般是氯碱工业制C12,A错误；B.S燃烧产物只生成SO2,S和O2不能直接生成SO3,B错误：C.4Na+3C02≌2Na,C03+C,C正确：D.铜与稀硝酸(0.1mol/L)不需要加热也能产生NO,D错误：9、【答案】C【分析】X、Y、Z、W四种短周期元素，基态Y原子核外电子有4种空间运动状态，Y的电子排布式为1s22s22p2,Y为C元素；X与Y、Z、W不同周期，X位于第一周期，X为H元素；X、Y、Z、W原子序数依次增大且总和为22，则Z和W原子序数和为22-6-1=15，Z为N元素，W为0元素，以此解答。【详解】A.H、C、N能形成直线形分子HCN,故A正确；B.H、C、O能形成酸性（同温同浓度下）比醋酸强的二元酸H2C2O4,故B正确；C.N和H能形成分子晶体NH3,也能形成离子晶体NH4H,故C错误；D.原子序数为52的Q元素为Te,O和Te在同一族，Te可用于制造半导体材料，故D正确：10、【答案】A【详解】A.1.0L模拟工业废水中H浓度为0.1mol/L,设加入xmolNaOH固体后pH=3,则cH）-0.1moLX1L~xmol-0.001mo/L,解符X009nal,放A错误：ILB.方程式Cu(OH),(s)+4NH,(aq)=[Cu(NH)4(aq)+2OH(aq)衡常数kOH)eCu(NH,)c (NH)=40x107,此时溶液pH=I1,cOH)Ix10molL,c[Cu(NH),]"}=0.04moM,则c(NH)=H)[Cu(NH,)103)2×0.004=10o5mol/L’故B正确：K4.0×10-7C.模拟工业废水的Fe3+完全沉淀时，c(Fe3+)=1.0×l05mol/L,c(OH)=Kp Fe(OH)]2.6×1039c(Fe).0×10mol/L≈1x10"mo1/L,pH3.则步骤1沉淀X为FeOD,同理可得步
数学f试卷答案)
3BC,若B=a,AC-b,则P夜-Aa-动B.a+0C.-3a+3bb3a-38.已知tana=一2，tan(a+)=7,当sin0+tan Bcos0(0∈R)取最大值时，tan0=A.-3B.3CZn号二、选择题：本大题共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1与22是共轭复数（虚部均不为0），则A.z30,A,f(x)是R上的增函数B.f(x)的值域为RC.“x>2”是“f(x)>2”的充要条件D.若关于x的方程f(x)+x一a=0恰有一个实根，则a>1三、填空题：本大题共4小题，每小题5分，共20分.13.在△ABC中，若a=4,b=3√3，C=120°，则S△ABc=14.如图所示，△ABC中，AC=12,边AC上的高BD=12,则其水放置的直观图的面积为15.设向量a,b满足a=2,ab=多，a+bl=2w2,则11=16.在钝角△ABC中，角A,B,C的对边分别为a,b,c,a=4,sinA=2 sin B C一sinC,则边b的取值范围是【高一期末·数学第2页（共4页）】8147A
全国100所名校最新高考模拟示范卷W:Sure.I need to return some books.They are due today.Besides,I can also read some weeklypublications.We can go to the swimming pool in the gym after that.W:Good idea.Oh,it's almost 9:00.I need to hurry.I am running late now.See you after theM:Great.class in front of the library then.Bye!M:See you then.(Text 8)W:What part of the paper are you reading?M:The travel section.W:Are you thinking about our vacation already?M:Yes,it's not so far away.I've been looking at these advertisements.W:Why don't we go to the same place we went last year?M:I won't stay at that hotel again.I have a better idea for this year.Look at this advertisement.This looks like a wonderful vacation for us.W:“Three weeks..”“Ten exciting ports..”“Use the ship as a hotel..”How much does it cost?M:The price isn't given.W:It must be expensive if they don't give the price in the paper.I think we may not afford it.M:But I don't want to sit on the same beach and eat the same food and look at the same wallsevery day for three or four weeks.(Text 9)M:Good afternoon.Can I help you?W:I'm here to ask about the job you have posted on the windowM:Yes.We are hiring personal shoppers.We posted the job on the Internet as well.Do you haveany experience?W:Well,I have a lot of experience helping people shop.I like to help people and I'm very good atfinding things that they might like.M:Who have you helped?W:Let me see...I've helped my family and many of my friends.M:I see.Well,you should know that it is difficult to satisfy our customers.They are busy peo-ple who want nice clothes,but don't have time to do a lot of shopping themselves.W:That sounds perfect for me.I don't mind spending my days in stores.I choose things verycarefully.M:You should know that our customers have high expectations.You may find working withthem quite challenging.W:I'm prepared for that.When will you be doing interviews?M:Well,today is Wednesday:..So,we'll start from tomorrow.If you are chosen for an interview,we'll call you within a few days.英语卷参考答案（四）第2页（共8页）【23·(新高考)ZX·MNJ·英语·Y)
22:08×令心无障碍16··I~元八1HHJL1小J四P山些日1P1ノU示”州L"吹/小H11从/为1312141工18.D令=n少，则=号-a,因为=4.5，x=2.5,所以a=号-8=-4,2=号十4，故第6个月的市场规模是e号+4=e万元.9.BC若所有的样本点都在一条直线上，建立的线性模型一定是直线，则|r|=1.同时说明每个样本点的残差均为0，没有随机误差，则R=1.10.ABD由题意可得E(X)=6,DX)=号，则EY)=28,D(Y)=60.11.AC由题意可知至少有1名女生的选法有C8一C种或C8C。十C%C十C种.12.cD令f)=e-2r-n(xte.f(x)=e-x-e令g)=ce-x-e则g)=c-1+显然当x≥0时，g(x)>≥0恒成立，故8)在(0，十o∞)上单调递增.因为g(0)=1-。>0,所以g(x)>0,即(x)>0在(0，十∞)上恒成立，f(x)在(0，十e∞)上单调递增，放当x>0时f(x)>f0)=0,从而e=合+ln十e)>a2+1na+e.令g(x)=号2+ln(x十e,>0,易得g(x)在(0，十∞)上单调递增，则b>a,故选CD13.-1;y=(1-e)x因为f(x)=x-e,所以f(x)=1-e.令f(x)>0,得x∈(-o∞，0)；令f(x)7)=1-)0.4=0.3.215.1(或2,3，只需填写一个答案即可)因为/()=2ax-S-2a,且fr)在(1，Γx22十o∞)上不单调，所以y=ax3-4与x轴的交点在(1，十o∞)上，所以4>1，所以a∈(0,4).因为a为整数，所以a=1,2,3.16.0.35记事件M表示“这人患了流感”，事件N1表示“这人来自A地区”，N2表示“这人来自B地区”，N3表示“这人来自C地区”，由题意可知P(N1)=0.2,P(N2)=0.35,P(N3)0.45,P(MN1)=0.02,P(MN2)=0.065,P(MN3)=0.085,则P(M)=P(N1)P(MN)+P(N:)P(MIN2 )+P(N)P(MIN)-0.065,P(N2 IM)-P(N2)P(MIN2)_P(M)0.35.17.解：1)当a=3时fx)=2x-6lnx-x+号，则f()=x-。-1-3)+2,20…2分由f(x)>0,得x>3,由f(x)
snow at.4:30a.m.可知，有四位同学接听了Patrick的电话，并决定住在Patrick家，目的是能在凌晨四点半醒来铲雪。54.A。根据本句中的it took less than30 minutes to clear the fresh snow可知，Patrick和他叫来一起铲雪的四个同学都是志愿者，故选volunteer。55.C。56.B。根据本句中的the boys expected the storm would force their town和giving themjust enough time to rest可知，男孩们以为暴风雪会让小镇取消上课，但上课时间只是延迟了两小时。57.D。根据本句中的giving them just enough time to rest和to school可知，延迟的两小时刚好够他们上学前休息会儿。58.B。59.D。根据上文内容以及本句中的if Patrick's father hadn't tweeted a photo可知，若不是Patrick的父亲在推特上发布照片，全世界可能都不会知道这一善举。60.C。根据上文内容以及本句中的serving as a role model for students with autism可知，Patrick在学校很活跃，是自闭症学生的榜样。第二节主题语境：人与社会一一历史、社会与文化本文是新闻报道。清华大学美术学院的陈楠教授致力于甲骨文的研究和复兴，他希望甲骨文能打破文化障碍，走向世界。61.carved。考查动词-ed形式。设空处作Chinese characters的后置定语，并与之存在逻辑上的动宾关系，故填carved。62.enthusiastic。考查形容词。设空处作定语，修饰名词professor,故填enthusiastic。63.has achieved。考查现在完成时。设空处作谓语，根据时间状语in recent years可知应用现在完成时，且主语是不可数名词protection,故填has achieved。.64.officially。.考查副词。设空处作状语，修饰谓语动词entered,故填officially。65.in。考查介词。participate in意为“参加”，故填in。66.to see。考查动词不定式。设空处作状语，表目的，故填to see。67.taking。考查动词-ing形式。suggest doing sth意为“建议做某事”，故填taking。68.that。考查固定搭配。so that在此引导目的状语从句，意为“以便；为了”，故填that。69.backgrounds。考查名词复数。设空处作介词from的宾语，前有other限定，此处表示“文化背景”，是可数名词，故填backgrounds。70.whose。考查关系词。设空处引导非限制性定语从句，修饰先行词Chen,且在所引导的从句中作designs的定语，故填whose。
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I'm going to enter the race because it helps build up our strength,and more importantly,it is atest of our perseverance.I know you're an excellent runner,so this is a good opportunity to showyour skill.If you decide to come along,I'd like to practice every day after school in the playgroundwith you.Please write to tell me your decision.Looking forward to your reply.Yours,LiHua部分解析阅读理解第一节A篇主题语境：人与自我一一生活与学本文是应用文。文章介绍了四本图书。21.A。理解具体信息.根据Living with Viola部分中的Livy is going through a lot、a shadowy twinthat follows Livy ..causing her self-doubt Only when Livy learns how to ask for help andmanage her anxiety.可知，Living with Viola一书中，主人公Livy感到焦虑、害怕。22.B。理解具体信息。根据Fast Pitch部分中的12-year-old Shenice Lockwood is captain of asoftball team...It's the first all-Black team in Georgia's Dixie Youth Softball Association.Shenice isdetermined to take her team to the championship可知，Fast Pitch一书讲述的是黑人女孩Shenice Lockwood带领队员打垒球的故事。23.A。理解具体信息。根据The Ultimate At-Home Activity Guide部分中的author and illustratorMike Lowery has spent a lot of time at home...he started dreaming up fun things to do...Now,Lowery has created a book containing 100 of his favorites:The Ultimate At-Home Activity Guide可知，Mike Lowery的书The Ultimate At-Home Activity Guide介绍了一百个有趣的居家活动。由此可知，该书为活动指南。B篇主题语境：人与社会一一社会服务本文是记叙文。美国特殊教育教师Keey从古董店购买老照片，通过家谱网站找到照片主人的亲戚后，将照片邮寄给他们。24.C。理解具体信息。根据第二段中的Kelley's journey to reconnect..she discovered picturesof people who weren't relatives mixed in with her grandparents'old family photos及她所说的They were friends of family和Wouldn't it be amazing to get these pictures in the mail可知，Kelley在祖父母的老照片里发现一些照片，这些照片不是亲戚的，而是一些朋友的。于是，她突发奇想，决定找到这些照片主人的亲人，将照片邮寄给他们。25.A。理解具体信息。根据第一段中的Kate Kelley.has been traveling to local antique storesand buying old photographs...visits genealogy sites in search of relatives of the people in thepictures、.第四段中的When she gets a match,she sends a direct message to the person和第五Kelley has mailed about 100 black-and-white photos to people ..She's also sent a fewto Canada and the United Kingdom可知，Kelley从古董店购买老照片，通过家谱网站找到照片主人的亲戚后，将照片邮寄给他们。26.C。理解具体信息。根据第六段中的She spends about three hours each night searching forconnections but expects to devote more time及Kelley所说的'm so excited because summervacation is around the corner及I'll be able to just focus on this可知，Kelley希望自己可以投入更多的时间来寻找老照片主人的亲人，将照片邮寄给他们。
in the brain可知，NTU团队创建的这个“生物启发式”数据融合系统使用单壁碳纳米管制成了类似皮肤的可伸展的应变传感器，并采用了一种类似于大脑同时处理皮肤感觉和视觉的人工智能方法。7.B。理解具体信息。根据第三段中的The wearable sensors recreate the skin's sensing ability,one of which is known as‘somatosensory'和倒数第三段中的a multilayer neural network forearly somatosensory information processing可知，多层神经网络可以处理皮肤感应信息。8.C。理解词汇。根据划线词所在句中的To collect reliable sensory data from hand gestures及之前感应器存在的问题可知，研究人员“制作”了一个可伸展的应变传感器。
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started to rain heavily outside.And then we received a specialdelivery.We found poor dog sitting at the gate.My husbandbrought it into the house.It stayed calmly as we dried it with atowel.I named it was Pumpkin.We liked it very much and let itsleeping with us.For the first time,I get a dog of my own.Pumpkin's appearances helped me in a way.It taught me whatthis meant to be responsible of another life.It also made me o-vercome his fear of animals.
