2019-2020年河北省石家庄市二模：石家庄市2019届高三第二次模拟考试数学(理)试题-附答案精品

河北省石家庄市2019届高三毕业班第二次模拟考试理科综合生物试题第I卷一、选择题：本题共13小题，每小题6分，共78分。

在每小题给出的四个选项中，只有一项是符合题目要求的。

1.依据动物细胞内的某些囊泡内容物作出的下列判断，正确的是A.若为消化酶，则该细胞的分泌物都进入内环境B.若为胰岛素，则该细胞表面没有神经递质的特异性受体C.若为神经递质，则该细胞不具有细胞周期D.若为抗体，则该细胞表面有抗原的特异性受体2.下列有关实验的表述正确的是A.苹果匀浆与斐林试剂发生作用生成砖红色沉淀，说明有葡萄糖的存在B.在孟德尔的豌豆杂交试验中，将母本去雄的目的是防止自花受粉C.调查遗传病的发病率时，应统计多个患者家系以减小误差D.胰腺分泌的促胰液素是人们发现的第一种激素噬菌体侵染细菌实验”的叙述，正确的是3.下列有关赫尔希和蔡斯的“T2A.离心的目的是使吸附在细菌上的噬菌体与细菌分离B.该实验运用了同位素标记法和差速离心法C.T噬菌体与细菌所含的核酸中嘌呤总数都等于嘧啶总数2D.32P标记的噬菌体侵染细菌的时间过长或过短，都会导致上清液放射性偏高4.下图表示某人的体温变化曲线，导致ab段和bc段体温变化的事件最有可能是A.剧烈运动和汗腺分泌增加B.环境温度上升和立毛肌收缩C.寒颤和肾上腺素分泌增加D.发热和皮肤血管收缩5.一对表现型正常的夫妇，生了一个既是红绿色盲又是XYY的儿子(生育能力正常）。

以下关于该男孩的说法正确的是A.体细胞内含有3个染色体组B.色盲基因可能来自其外祖母或祖母C.染色体异常可能是父亲的精原细胞减数第二次分裂异常导致D.该男孩的女儿不一定携带色盲基因6.下图为野生绵羊种群在1800年被引入某岛屿后的种群数变化曲线。

下列对该种群的相关描述错误的是A.1840年前种群数量的增长趋势与气候适宜、食物和空间较充裕有关B.该绵羊种群的环境容纳量会因环境的玻坏而改变C.种群数量达到环境容纳量后，出生率和死亡率基本相等第II卷（非选择题，共174分）三、非选择题：（共174分）29.（8分）在高等植物细胞中，线粒体和叶绿体是重要细胞器，请回答以下问题：（1）叶绿体中的光合色素位于________________上。

石家庄市2019届高中毕业班模拟考试（二）语文参考答案（5.7—11：30）一、现代文阅读（36分）1 D【解析】 A 项中应是“精神生命”，而非“生命”，扩大了范围。

B项理解偏差，尧舜禹时代并没有儒家。

C项对“和而不同”理解错误。

2B【解析】“旨在论证”错误，论证的是“‘和’是中华文明中的最高道德理念”。

3C【解析】“三者功能各不相同”错误，三者有相同之处。

4B【解析】“网店销售额的增长量逐年扩大”错误，从图一提供数据可知，前几年的增长量都是40亿，到2015年之后才逐渐扩大。

5 D【解析】A项因果不当，出现良好的发展态势的原因很多，单单前面提到的几个方面是不足的；而且“讲好了自己特殊土壤中的故事”曲解文义，原文是“讲述着植根自己城市特殊土壤的故事”。

B项张冠李戴，“学霸专区”“少儿启蒙”等分类是新华书店网上商城的分类，并非实体书店的分类。

C项因果颠倒，未然与已然混淆。

打造“书香三晋·文化山西”品牌是目的，推动实体书店的创新发展是手段；“效果显著”无中生有。

6 ①增强实体书店的地域文化特色。

研究所在城市的文化，深度融合城市的文化精神，将实体书店打造成各具特色的、无可替代的城市文化地标。

②转变经营方式，与时俱进。

研究读者的阅读习惯、消费理念，依据其需要开设网上商城，扩大销售渠道。

③争取政策支持。

与政府联合，力争得到政策的有力支持，从而形成多种业态、体系完善的发展格局。

（每点2分）7 C（“对比强烈，体现分明的爱憎”错。

作者并不憎恨北方。

他认为是南方和北方共同塑造了自己的性格，从文中“南方和北方，命运之中两片不同的陆地，他在心中将其悄悄缝合，感觉统一和连接的博大”可知，不过作者更强调南方的影响而已。

）8 ①比喻。

如“它像少女黑亮的长发，温柔的目光，洁白的面容……”写出了南方的水的美丽温婉。

②排比。

如“滑润之水，滋养生命的水，始终如一的水，永不疲倦的水”写出了南方的水细腻润泽、和缓柔韧。

③拟人。

河北省石家庄市2019届高三年级第二次模拟考试英语试题学校:___________姓名：___________班级：___________考号：___________一、阅读理解From the V&A’s landmark fashion exhibitions to a collection of Vincent van Gogh’s finest works: these are the London exhibitions you can’t miss right now.Mary QuantThe fashion exhibition at the V&A this summer moves to street-smart designer Mary Quant, who’s considered highly influential in the trends of the 1960s, playing a big part in the popularity of the mini-skirts and hot pants. In this exhibition, see more than 200 clothing pieces as well as photographs and designs that will transport you back to the decade.Tickets: £12Dates: Sunday, 6 April, 2019-Sunday, 16 February, 2020Van Gogh and BritainThe exhibition at the Tate Britain brings together 50 pieces Van Gogh’s classic works. His relationship with Britain is an early focus: he spoke and read English well and was devoted to British literature. “My whole life is aimed at making the things from everyday life that Dickens describes,” he wrote. See Van Gogh’s collection of British books before arriving at his paintings.Tickets:£22Dates:Wednesday, 27 March-Sunday, 11 August, 2019Diane Arbus: In the BeginningThis display of Diane Arbus’ works has been put on by The Metropolitan Museum of Art in New York. Titled Diane Arbus: In the Beginning, it covers the first half of her career, featuring more than 100 photographs taken across New York landmarks such as Times Square and Coney Island, more than two-thirds of which haven’t been seen in the UK before.Tickets:£14Dates: Until Thursday, 6 May,2019DonMccullinMore than 250 photos taken by British photojournalist DonMcCullin over the past six decades are on display at the Tate Britain. See shots from one of the UK’s most famous war photographers reporting in Vietnam, Northern Ireland and Syria, as well as photos taken ofworking-class life in London’s East End. The pictures offer a fascinating insight into more than 60 years of conflict and poverty around the world.Tickets:£18Dates: Tuesday, 5 February-Monday, 6 May, 20191．Which exhibition brings you back to the sixties?A．Mary Quant.B．Van Gogh and Britain.C．Diane Arbus:In the Beginning.D．Don Mccullin.2．How much do you need to pay for one ticket if you’re interested in paintings? A．£12.B．£22.C．£14.D．£18. 3．What can you see at the exhibition of Diane Arbus?A．Designs and photos of clothing.B．Van Gogh’s collection of British books. C．Shots of famous New York sights.D．Photos reflecting poverty around the world.On March 16, 2018, eight-year-old Tanitoluwa “Tani” Adewumi, defeated 73 young competitors to win the New York State Chess Championship in his age category-kindergarten to third grade. While the achievement is remarkable in itself, what makes it even more so is that the youngster, who was homeless at the time, began learning the game less than a year ago.Tani and his family arrived in New York City from Nigeria in 2017, seeking religious protection. A church pastor(牧师)helped find the family of four space in a homeless shelter and soon after, Tani entered the local elementary school. It was here that the young talent was first introduced to the basics of chess by a part-time teacher. Attracted by the game, the then seven-year-old begged his mother, Oluwatoyin, to allow him to join the school’s chess club. Concerned the family would be unable to afford the fees and expenses, which add up to thousands of dollars, Oluwatoyin emailed Russel Makofsky, who ran the club. To her surprise and delight, Makofsky agreed to waive all costs for young Tani. The rest, as they say, is history. The young boy, who has got seven prizes in less than a year, currently ranks 27 in America in his age category.Though the chess club certainly helps, it is Tani’s devotion to the game that is largely responsible for his great success. Not surprisingly, Tani’s incredible story, first reported by The New York Times, has resulted in an outpouring of support from the American public. Ithas raised $200,000 in just ten days, far more than the original goal of $50,000, and the funds keep coming.Since they now have a home, the Adewumis have decided to “pay it forward” and donate the over $200,000 collected on GoFundMe. They plan to give 10 percent of the funds raised to the church that has supported them. The rest will be placed in the newly-created Tanitoluwa Adewumi Trust and given to African immigrants to America who are struggling the way the family was.4．What made Tani’s achievement especially remarkable?A．His quick learning.B．His young age.C．Support from his family.D．Help from his teacher.5．What does the underlined part “to waive all costs for young Tani” in Paragraph 2 mean? A．To teach Tani free of charge.B．To raise money for Tani’s family. C．To pay for Tani’s schooling.D．To spend more on Tani’s training. 6．What’s Paragraph 3 mainly about?A．Reports of the media.B．Activities of the chess club. C．Tani’s devotion to the game.D．Public reaction to Tani’s story. 7．What does the last paragraph tell us about the family?A．They are poor.B．They are kind.C．They are honest.D．They are pitiful.Those concerned that robots are taking over the world can rest easy-for now. Though the androids have proved useful at performing ordinary tasks, they are not ready for prime time. At least that appears to be the case at Japan’s cutting-edge Henn-na Hotel chain where over half of the robot staff is being replaced by humans.The first Henn-na Hotel opened in July 2015, where guests were greeted and checked-in by either a family-friendly English-speaking dinosaur robot or a Japanese-speaking humanoid. Autonomous robots stood ready to help guests carry luggage to their rooms, while a cutedoll-shaped android called Churi, placed inside each room, provided them with information about nearby attractions. Even the hotel’s garbage cans were robotic.Not surprisingly, the lodging, recognized in 2016 as the world’s first robot-staffed hotel by Guinness World Records, drew in curious visitors from all around the world.But as the years have passed, the hotel’s main draw — its employees — are becoming less of a novelty (新颖) and more of a bother. Also as the robots are “aging”, they are costingmore to repair and maintain. Earlier this month, the hotel chain’s parent company H. I. S. announced that it had decided to “fire” over half of the robot employees and replace them with humans. Among them are the chain’s two robot receptionists. In addition to scaring young guests, they are also unable to photocopy guests’ passports-a requirement when checking into a Japanese hotel--forcing human employees to step in each time. Also, out are the cute Churi robots, which have proved unable to answer even the simplest questions and annoyed guests by interrupting their conversations.While this is a setback, the company’s officials are not discouraged. They plan to continue with their ambitious expansion plans and believe the human-robot interaction is a learning process.“When you actually use robots, you realize there are places where they aren’t needed.” said one of the officials.8．What could robots in the first Henn-na Hotel do?A．Offer guests traffic information.B．Help guests pack their luggage. C．Greet guests in English or Japanese.D．Direct guests to check in at the front desk.9．What’s one of the problems of the “fired” robots?A．They cause trouble to customers.B．They ignore instructions.C．They annoy human employees.D．They are beyond repair.10．What can be inferred about the officials of Henn-na Hotel chain?A．They think highly of their interaction with customers.B．They are against the use of state-of-art equipment.C．They plan to hire more cute Churi robots.D．They’ve realized the limitations of robots.11．What is the best title for the text?A．Robot Employees-Ready for Prime TimeB．Japanese Hotel Chain Expands AmbitiouslyC．Robot Employees-a New Novelty for HotelsD．Japanese Hotel Chain “Fires” Robot EmployeesAs carmakers push ahead with self-driving vehicles, an Austrian aerospace company and its Chinese partner showed off their pilotless “flying taxi” for the first time in Europe on Thursday.The drone(无人机)hummed loudly as it rose above the ground at Vienna’s Generali Arena, home to soccer club Austria Wien. The slim plane, which weighs 750 pounds, circled in the air briefly and came down within a few minutes.The EHang 216, which can seat two passengers, has been tested comprehensively and is essentially ready for mass production, said Derrick Xiong, cofounder of Chinese drone maker EHang. The drone can fly at up to 150 km per hour for almost half an hour, FACC AG Chief Executive Officer Robert Machtlinger said. “It can travel between 50 and 70 kilometers depending on the load.” The passenger capsule is small, with leg room that taller passengers might find less than adequate, an Austrian photographer who took part in a demonstration(演示)flight told Reuters.Joining the race for new autonomous aircraft services that do not require runways, EHang entered a strategic partnership last year with Austria’s FACC, owned by Chinese aerospace group A VIC, aiming to offer short-distance services for passengers, industrial equipment and urgent medical deliveries. FACC says it has already received several thousand orders for the $336000 drone, with the highest demand in China. Competitors working toward offering autonomous flying cars early in the next decade range from aerospace company Airbus to Uber and AeroMobil.“Technically…urban mobility, flying without a pilot, is possible. It’s not a dream. It’s existing,” said Machtlinger. “What is stopping us from going into larger volumes(规模)is regulation,” he added. “A future legal framework for autonomous flying vehicles should regulate communication with other planes and helicopters and provide traffic rules,” he said. Austria supports international efforts to quickly establish the necessary regulation，said transport minister Norbert Hofer. He hopes that Austria will be the place where thousands of these air taxis will be built and that very soon we will see a lot of these air taxis in the air. 12．What stage of development is the EHang 216 at?A．It’s being tested comprehensively.B．It’s ready for mass production.C．It’s ready for demonstration flights.D．It’s being adapted to customer demands. 13．What do we know about the EHang 216?A．Its maximum load is 750 pounds.B．It can carry two passengers.C．It can fly for almost an hour.D．It can travel over 70 kilometers. 14．What is a big barrier to a wider use of flying taxis?A．Technical problems.B．Objection of the government.C．Lack of related rules.D．Competition between aerospace companies.15．How does the author introduce the EHang 216?A．By comparing it with similar products.B．By explaining how it works.C．By providing specific data of it.D．By demonstrating its multi-functions.二、七选五I love to travel alone for one reason: the strangers. Talking to strangers along your travels can change your trip into an adventure.___16___.Don’t ignore your fellow tourists. On a casual road trip, I went into a local shop. Waiting in a line to pay, I asked the woman ahead of me if she was from the area. “Nope. Oklahoma,” she told me. “Why?”___17___.The man behind me jumped in and recommended some places worth visiting.Stop using your phone. You need to be an open person, with open body language and open eyes and without a shield(盾). But my phone often gets between me and the surroundings. It ruins my chances to make eye contact with the people I see.___18___, take a dep breath and make a sacred deal with yourself not to touch it. Put it in a different pocket than you usually do every time you reach for it.___19___.I’ll start by choosing a place to have morning coffee or breakfast. After that, I’ll let a local suggest what to do. I’ve found that the easiest way to do this is to talk to people who are in open roles, such as people who work in restaurants, stores, or museums or ask someone seated near you on a bench or in a cafe. Ask where the person’s favorite street is.Don’t be afraid of getting lost. On a visit to London a few years ago, I got out from the Tube and got hopelessly lost.___20___. So I stepped into a pub to dry myself and ended up listening to a woman telling me about her years as a spy.A．It began to rainB．Let strangers make all your plansC．When you’ re watching somebodyD．I will share with you my experienceE．If stopping using it feels unsafe to youF．Never feel afraid of the strangers you meetG．I replied I was on a trip, looking for scenic spots三、完形填空One day, I was driving with my three-year-old granddaughter, Madison, when I sawa___21___reading “Friendly Upholstery(室内装潢品)” It was a small___22___.When I parked my car and walked inside, the gentleman was___23___, so I beganto___24___Madison what they built in such a place. As we were walking around,I___25___to tell him to take his___26___as I was in no hurry.When he___27___his call, I began to___28___I had a wooden shelf in my home office that extended out from my desk and that___29___my granddaughter would strike her head. I needed something soft to____30____the shelf to protect her.“She’s a pretty little thing,” he said____31____, reaching out to make her laugh.I stood watching as he headed off to a back room. Minutes later, hereturned____32____a piece of leather. I took it and____33____how much it would be.“How much do I____34____you?” “Don’t worry about it,” he told me, as he waved hishand____35____.After thanking him, we drove home, where I covered the shelf with the leather. It was less than an hour later when Madison slipped off my desk, hitting her face directly on the side of the shelf. A bit scared, she got up,____36____.I was inspired by that gentleman’s____37____for someone else’s safety, rather than the money that he could have gotten from me, a(n)____38____from out of nowhere.Last week, one year later, I returned to his small shop and____39____him once again. I wanted him to know that kindness is____40____appreciated by some, even in this day and age, and that I will forever remember it.21．A．notice B．sign C．warning D．title 22．A．market B．garage C．shop D．buffet 23．A．in trouble B．on leave C．in the queue D．on the phone 24．A．show B．teach C．offer D．award 25．A．glanced B．yelled C．gestured D．bowed 26．A．time B．order C．turn D．seat 27．A．answered B．canceled C．returned D．completed28．A．argue B．explain C．conclude D．condemn 29．A．frequently B．permanently C．casually D．deliberately 30．A．decorate B．support C．cover D．fix 31．A．proudly B．abruptly C．calmly D．kindly 32．A．selling out B．holding out C．picking up D．gathering up 33．A．wondered B．suspected C．calculated D．announced 34．A．reward B．know C．owe D．envy 35．A．up and down B．now and then C．in and out D．back and forth 36．A．unaware B．unhurt C．disappointed D．disabled 37．A．sacrifice B．promise C．demand D．concern 38．A．stranger B．driver C．neighbor D．instructor 39．A．assisted B．questioned C．thanked D．comforted 40．A．temporarily B．truly C．instantly D．generally四、用单词的适当形式完成短文阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。

河北省石家庄市2019-2020学年第二次高考模拟考试数学试卷一、选择题：本题共12小题，每小题5分，共60分。

在每小题给出的四个选项中，只有一项是符合题目要求的。

1．已知圆22670x y x +--=与抛物线()220y px p =>的准线相切，则p 的值为（）A ．1B ．2C ．12D ．4【答案】B 【解析】 【分析】因为圆22670x y x +--=与抛物线()220y px p =>的准线相切，则圆心为（3,0），半径为4，根据相切可知，圆心到直线的距离等于 半径，可知p 的值为2，选B. 【详解】 请在此输入详解！2．已知函数2,0()0xx f x x -⎧⎪=>„，若()02f x <，则0x 的取值范围是（ ）A ．(,1)-∞-B ．(1,0]-C ．(1,)-+∞D ．(,0)-∞【答案】B 【解析】 【分析】对0x 分类讨论，代入解析式求出0()f x ，解不等式，即可求解. 【详解】函数2,0()0xx f x x -⎧⎪=>„，由()02f x <得00220xx -⎧<⎪⎨⎪⎩„或02x <>⎪⎩ 解得010-<x „. 故选:B. 【点睛】本题考查利用分段函数性质解不等式，属于基础题.3．某几何体的三视图如图所示，其中正视图是边长为4的正三角形，俯视图是由边长为4的正三角形和一个半圆构成，则该几何体的体积为（ ）A ．438π+B ．238π+C ．434π+D ．834π+【答案】A 【解析】由题意得到该几何体是一个组合体，前半部分是一个高为23底面是边长为4的等边三角形的三棱锥，后半部分是一个底面半径为2的半个圆锥，体积为21311434234238323V ππ=⨯⨯⨯+⨯⨯⨯=+故答案为A.点睛：思考三视图还原空间几何体首先应深刻理解三视图之间的关系，遵循“长对正，高平齐，宽相等”的基本原则，其内涵为正视图的高是几何体的高，长是几何体的长；俯视图的长是几何体的长，宽是几何体的宽；侧视图的高是几何体的高，宽是几何体的宽.由三视图画出直观图的步骤和思考方法：1、首先看俯视图，根据俯视图画出几何体地面的直观图；2、观察正视图和侧视图找到几何体前、后、左、右的高度；3、画出整体，然后再根据三视图进行调整.4．已知底面是等腰直角三角形的三棱锥P-ABC 的三视图如图所示，俯视图中的两个小三角形全等，则（ ）A ．PA ，PB ，PC 两两垂直 B ．三棱锥P-ABC 的体积为83C ．||||||6PA PB PC ===D ．三棱锥P-ABC 的侧面积为35【答案】C 【解析】 【分析】根据三视图，可得三棱锥P-ABC 的直观图，然后再计算可得. 【详解】解：根据三视图，可得三棱锥P-ABC 的直观图如图所示，其中D 为AB 的中点，PD ⊥底面ABC. 所以三棱锥P-ABC 的体积为114222323⨯⨯⨯⨯=， 2AC BC PD ∴===，2222AB AC BC ∴=+=，||||||2DA DB DC ∴===，()22||||||226,PA PB PC ∴===+=222PA PB AB +≠Q ，PA ∴、PB 不可能垂直，即,PA ,PB PC 不可能两两垂直，1222222PBAS ∆=⨯⨯=Q ，()22161252PBC PAC S S ∆∆==⨯-⨯=Q .∴三棱锥P-ABC 的侧面积为2522+.故正确的为C. 故选：C. 【点睛】本题考查三视图还原直观图，以及三棱锥的表面积、体积的计算问题，属于中档题. 5．已知函数()2cos sin 6f x x x m π⎛⎫=⋅++ ⎪⎝⎭（m ∈R ）的部分图象如图所示.则0x =（ ）A ．32π B ．56π C ．76π D ．43π-【答案】C 【解析】 【分析】由图象可知213f π⎛⎫=-⎪⎝⎭,可解得12m =-,利用三角恒等变换化简解析式可得()sin 26f x x π⎛⎫=+ ⎪⎝⎭,令()=0f x ,即可求得0x .【详解】 依题意，213f π⎛⎫=-⎪⎝⎭，即252cos sin 136m ππ⋅+=-,解得12m =-；因为()1112cos sin 2cos cos 6222f x x x x x x π⎫⎛⎫=⋅+-=⋅+-⎪ ⎪⎪⎝⎭⎝⎭211cos cos 2cos 2sin 2226x x x x x x π⎛⎫=+-=+=+ ⎪⎝⎭ 所以02262x k πππ+=+，当1k =时，076x π=. 故选:C. 【点睛】本题主要考查了由三角函数的图象求解析式和已知函数值求自变量,考查三角恒等变换在三角函数化简中的应用,难度一般.6．已知函数()ln 2f x x ax =-，()242ln ax g x x x=-，若方程()()f x g x =恰有三个不相等的实根，则a的取值范围为（ ） A ．(]0,eB ．10,2e ⎛⎤ ⎥⎝⎦C ．(),e +∞D ．10,e ⎛⎫ ⎪⎝⎭【答案】B 【解析】 【分析】由题意可将方程转化为ln 422ln x ax a x x -=-，令()ln xt x x=，()()0,11,x ∈+∞U ，进而将方程转化为()()220t x t x a +-=⎡⎤⎡⎤⎣⎦⎣⎦，即()2t x =-或()2t x a =，再利用()t x 的单调性与最值即可得到结论.【详解】由题意知方程()()f x g x =在()()0,11,+∞U 上恰有三个不相等的实根，即24ln 22ln ax x ax x x-=-，①.因为0x >，①式两边同除以x ，得ln 422ln x axa x x-=-. 所以方程ln 4220ln x axa x x--+=有三个不等的正实根. 记()ln x t x x=，()()0,11,x ∈+∞U ，则上述方程转化为()()4220a t x a t x --+=. 即()()220t x t x a +-=⎡⎤⎡⎤⎣⎦⎣⎦，所以()2t x =-或()2t x a =. 因为()21ln xt x x -'=，当()()0,11,x e ∈U 时，()0t x '>，所以()t x 在()0,1，()1,e 上单调递增，且0x →时，()t x →-∞.当(),x e ∈+∞时，()0t x '<，()t x 在(),e +∞上单调递减，且x →+∞时，()0t x →.所以当x e =时，()t x 取最大值1e，当()2t x =-，有一根. 所以()2t x a =恰有两个不相等的实根，所以102a e<<. 故选：B. 【点睛】本题考查了函数与方程的关系，考查函数的单调性与最值，转化的数学思想，属于中档题. 7．已知复数168i z =-，2i z =-，则12z z =（ ） A ．86i - B ．86i +C ．86i -+D ．86i --【答案】B 【解析】分析：利用21i =-的恒等式，将分子、分母同时乘以i ，化简整理得1286z i z =+ 详解：2122686886z i i i i z i i--===+-- ，故选B 点睛：复数问题是高考数学中的常考问题，属于得分题，主要考查的方面有：复数的分类、复数的几何意义、复数的模、共轭复数以及复数的乘除运算，在运算时注意21i =-符号的正、负问题.8．使得()3nx n N +⎛∈ ⎝的展开式中含有常数项的最小的n 为( )A ．4B ．5C ．6D ．7【答案】B 【解析】二项式展开式的通项公式为r -n 3x n rr C （），若展开式中有常数项，则3--=02n r r ，解得5=2n r ，当r 取2时，n 的最小值为5，故选B【考点定位】本题考查二项式定理的应用．9．在ABC ∆中，“sin sin A B >”是“tan tan A B >”的（ ） A ．充分不必要条件 B ．必要不充分条件 C ．充要条件 D ．既不充分也不必要条件【答案】D 【解析】 【分析】通过列举法可求解，如两角分别为2,63ππ时【详解】当2,36A B ππ==时，sin sin A B >，但tan tan A B <，故充分条件推不出； 当2,63A B ππ==时，tan tan A B >，但sin sin A B <，故必要条件推不出；所以“sin sin A B >”是“tan tan A B >”的既不充分也不必要条件. 故选：D. 【点睛】本题考查命题的充分与必要条件判断，三角函数在解三角形中的具体应用，属于基础题10．在ABC ∆中，2AB =，3AC =，60A ∠=︒，O 为ABC ∆的外心，若AO x AB y AC =+u u u r u u u r u u u r，x ，y R ∈，则23x y +=（ ） A ．2 B ．53C ．43D ．32【答案】B 【解析】 【分析】首先根据题中条件和三角形中几何关系求出x ，y ，即可求出23x y +的值. 【详解】如图所示过O 做三角形三边的垂线，垂足分别为D ，E ，F ， 过O 分别做AB ，AC 的平行线NO ，MO ，由题知222294cos 607212AB AC BC BC BC AB AC +-++︒==⇒=⋅⋅则外接圆半径212sin 603BC r ==⋅︒， 因为⊥OD AB ，所以22212319OD AO AD =-=-=， 又因为60DMO ∠=︒，所以2133DM AM =⇒=，43MO AN ==， 由题可知AO xAB y AC AM AN =+=+u u u r u u u r u u u r u u u u r u u u r，所以16AM x AB ==，49AN y AC ==， 所以5233x y +=. 故选：D. 【点睛】本题主要考查了三角形外心的性质，正弦定理，平面向量分解定理，属于一般题. 11．已知复数z 满足()14i z i -=，则z =（ ） A ．2B ．2C ．4D ．3【答案】A 【解析】 【分析】由复数除法求出z ，再由模的定义计算出模． 【详解】44(1)22,221(1)(1)i i i z i z i i i +===-+=--+故选：A ． 【点睛】本题考查复数的除法法则，考查复数模的运算，属于基础题．12．设实数x 、y 满足约束条件1024x y x y x +≤⎧⎪-≤⎨⎪≥⎩，则23z x y =+的最小值为（ ）A ．2B ．24C ．16D ．14【答案】D 【解析】 【分析】做出满足条件的可行域，根据图形即可求解. 【详解】做出满足1024x y x y x +≤⎧⎪-≤⎨⎪≥⎩的可行域，如下图阴影部分，根据图象，当目标函数23z x y =+过点A 时，取得最小值，由42x x y =⎧⎨-=⎩，解得42x y =⎧⎨=⎩，即(4,2)A ， 所以23z x y =+的最小值为14. 故选：D.【点睛】本题考查二元一次不等式组表示平面区域，利用数形结合求线性目标函数的最值，属于基础题. 二、填空题：本题共4小题，每小题5分，共20分。

河北省石家庄市2019届高中毕业班模拟考试（二）语文试卷石家庄市2019届高中毕业班模拟考试（二）语文参考答案（5.7—11：30）一、现代文阅读（36分）1 D【解析】 A 项中应是“精神生命”，而非“生命”，扩大了范围。

B项理解偏差，尧舜禹时代并没有儒家。

C项对“和而不同”理解错误。

2 B【解析】“旨在论证”错误，论证的是“‘和’是中华文明中的最高道德理念”。

3 C【解析】“三者功能各不相同”错误，三者有相同之处。

4 B【解析】“网店销售额的增长量逐年扩大”错误，从图一提供数据可知，前几年的增长量都是40亿，到2015年之后才逐渐扩大。

5 D【解析】A项因果不当，出现良好的发展态势的原因很多，单单前面提到的几个方面是不足的；而且“讲好了自己特殊土壤中的故事”曲解文义，原文是“讲述着植根自己城市特殊土壤的故事”。

B项张冠李戴，“学霸专区”“少儿启蒙”等分类是新华书店网上商城的分类，并非实体书店的分类。

C项因果颠倒，未然与已然混淆。

打造“书香三晋·文化山西”品牌是目的，推动实体书店的创新发展是手段；“效果显著”无中生有。

6 ①增强实体书店的地域文化特色。

研究所在城市的文化，深度融合城市的文化精神，将实体书店打造成各具特色的、无可替代的城市文化地标。

②转变经营方式，与时俱进。

研究读者的阅读习惯、消费理念，依据其需要开设网上商城，扩大销售渠道。

③争取政策支持。

与政府联合，力争得到政策的有力支持，从而形成多种业态、体系完善的发展格局。

（每点2分）7 C（“对比强烈，体现分明的爱憎”错。

作者并不憎恨北方。

他认为是南方和北方共同塑造了自己的性格，从文中“南方和北方，命运之中两片不同的陆地，他在心中将其悄悄缝合，感觉统一和连接的博大”可知，不过作者更强调南方的影响而已。

）8 ①比喻。

如“它像少女黑亮的长发，温柔的目光，洁白的面容……”写出了南方的水的美丽温婉。

②排比。

如“滑润之水，滋养生命的水，始终如一的水，永不疲倦的水”写出了南方的水细腻润泽、和缓柔韧。

石家庄市2019届高中毕业班模拟考试（二）语文参考答案（5.7—11：30）一、现代文阅读（36分）1 D【解析】 A 项中应是“精神生命”，而非“生命”，扩大了范围。

B项理解偏差，尧舜禹时代并没有儒家。

C项对“和而不同”理解错误。

2 B【解析】“旨在论证”错误，论证的是“‘和’是中华文明中的最高道德理念”。

3 C【解析】“三者功能各不相同”错误，三者有相同之处。

4 B【解析】“网店销售额的增长量逐年扩大”错误，从图一提供数据可知，前几年的增长量都是40亿，到2015年之后才逐渐扩大。

5 D【解析】A项因果不当，出现良好的发展态势的原因很多，单单前面提到的几个方面是不足的；而且“讲好了自己特殊土壤中的故事”曲解文义，原文是“讲述着植根自己城市特殊土壤的故事”。

B项张冠李戴，“学霸专区”“少儿启蒙”等分类是新华书店网上商城的分类，并非实体书店的分类。

C项因果颠倒，未然与已然混淆。

打造“书香三晋·文化山西”品牌是目的，推动实体书店的创新发展是手段；“效果显著”无中生有。

6 ①增强实体书店的地域文化特色。

研究所在城市的文化，深度融合城市的文化精神，将实体书店打造成各具特色的、无可替代的城市文化地标。

②转变经营方式，与时俱进。

研究读者的阅读习惯、消费理念，依据其需要开设网上商城，扩大销售渠道。

③争取政策支持。

与政府联合，力争得到政策的有力支持，从而形成多种业态、体系完善的发展格局。

（每点2分）7 C（“对比强烈，体现分明的爱憎”错。

作者并不憎恨北方。

他认为是南方和北方共同塑造了自己的性格，从文中“南方和北方，命运之中两片不同的陆地，他在心中将其悄悄缝合，感觉统一和连接的博大”可知，不过作者更强调南方的影响而已。

）8 ①比喻。

如“它像少女黑亮的长发，温柔的目光，洁白的面容……”写出了南方的水的美丽温婉。

②排比。

如“滑润之水，滋养生命的水，始终如一的水，永不疲倦的水”写出了南方的水细腻润泽、和缓柔韧。

石家庄市2019届高中毕业班模拟考试（二）文科综合地理参考答案一、选择题二、非选择题36．（22分）（1）差异：东部湖水受海水影响大，盐度高；（1分）西部湖水受河流影响大，盐度低。

（1分）原因：尼罗河汛期时，洪水通过甲运河注入堡若勒斯湖，湖水盐度降低；（2分）尼罗河枯水期时，海水通过乙运河倒灌进入湖泊，湖水盐度升高，导致中部湖水盐度季节变化显著。

（2分）（2）堡若勒斯湖水深较浅，湖中岛屿众多，分布着从湖泊到陆地的生物群落；（2分）湖泊西部盐度低，东部盐度高，中部湖水盐度季节变化显著，分布着从淡水到海水的生物群落。

（2分）（3）阿斯旺大坝建成后，从尼罗河流经甲运河的总流量增大，且年内分配比较均匀，稳定的淡水流代替季节性洪水注入湖泊，使湖泊水位升高，乙运河成为湖泊的排水口，湖泊从湖水盐度波动的环境变成淡水湖泊；（4分）堡若勒斯湖淡水生物群落逐渐占据主导地位。

（2分）（4）最终结局：堡若勒斯湖成为地中海的一个海湾。

（2分）理由：由于尼罗河干支流众多水坝的修建，尼罗河向海洋输送的泥沙减少，海水侵蚀代替河流泥沙沉积占据主导地位，使堡若勒斯湖北面沙坝逐渐被侵蚀，加上尼罗河三角洲的沉降作用，最终堡若勒斯湖成为地中海的一部分（海湾）。

（4分）37.（24分）（1）紫鹊界梯田上部山区森林茂密，植被覆盖率高，具有良好的水源涵养功能；（2分）山体基岩为花岗岩，岩性致密，阻隔水源下渗；（2分）土壤主要由花岗岩风化发育而成，砂性质地，颗粒较粗，土壤孔隙较大，土层较厚，地下储水量大，储水能力强。

（2分）（2）紫鹊界梯田位于雪峰山东侧，阻挡夏季风，形成地形雨；植被茂密，植物蒸腾增加水汽供给，降水比平原地区多。

紫鹊界梯田地下储水丰富，独有的水利灌溉工程保障干旱时期农田的充足供水；持续晴热天气使水温升高，更有利于水稻催苗增产。

（任答3点，每点2分，共6分）（3）紫鹊界梯田作物单一且采用纯手工耕种方式，生产成本高，经济效益低；（2分）山体坡度大，梯田田块小，不利于机械化耕作，生产效率低；（2分）农村青壮年大量外出务工和从事旅游业，劳动力短缺。

路漫漫其修远兮，吾将上下而求索！2019-2020年备考河北省石家庄市2019届第二次模拟考试理科综合化学试题注意事项：1.答题前，考生务必用0.5毫米黑色签字笔将自己的姓名、座号、考生号、县区和科类填写到答题卡和试卷规定的位置上。

2.选择题每小题选出答案后，用2B铅笔把答题卡上对应题目的答案标号涂黑；如需改动，用橡皮擦干净后，再选涂其他答案标号。

写在本试卷上无效。

3.必须用0.5毫米黑色签字笔作答，答案必须写在答题卡各题目指定区域内相应的位置；如需改动，先划掉原来的答案，然后再写上新的答案；不能使用涂改液、胶带纸、修正带。

不按以上要求作答的答案无效。

可能用到的相对原子质量: H 1 C 12 N 14 O 16 Na 23 S 32 Cl 35.5K 39 Fe 56 Cu 647．港珠澳大桥水泥的使用量约198万吨。

水泥熟料的主要成分为CaO、SiO2，并含有一定量的铁、铝和镁等金属的氧化物。

实验室测定水泥样品中钙含量的过程如图所示：下列叙述正确的是A.水泥、玻璃、陶瓷为传统的硅酸盐材料，三者的原料都主要为SiO2B.沉淀A主要成分为SiO2，沉淀B为Fe(OH)3、Al(OH)3C.为了加快溶解速率，使用盐酸代替硫酸处理草酸钙D.草酸钙易溶于水8．化学与生活密切相关，下列有关物质与用途的因果关系错误．．的是 A. Fe(OH)3胶体具有较强的吸附性，所以可用于制备红色颜料铁红B. NaClO 溶液具有强氧化性，所以可用于生活环境的消毒C. NH 4Cl 溶液呈酸性，所以可用于除去钢板上的铁锈D. KMnO 4溶液可以氧化乙烯，所以可用浸泡过KMnO 4溶液的硅藻土作水果保鲜剂9．若N A 代表阿伏伽德罗常数的值，下列说法正确的是A. 常温常压下，18g 的D 2O 含有的中子数、电子数均为10N AB. 1.0 mol/L 的FeCl 3溶液中Fe 3+的个数小于N AC. 标准状况下，2.24 L 甲醛中碳氢键的数目为0.2N AD. 密闭容器中，加入2molHI ，发生反应：2HI(g)H 2(g)+I 2(g)，达到平衡后气体分子总数小于2N A10. 用下列装置完成相关实验，合理的是图① 图② 图③ 图④A ．图①：验证H 2CO 3酸性强于H 2SiO 3B ．图②：收集CO 2或NH 3C ．图③：分离Na 2CO 3溶液与CH 3COOC 2H 5D ．图④：分离CH 3CH 2OH与CH 3COOH11. 有关苹果酸的说法正确的是 A ．苹果酸中能发生酯化反应的官能团有2种B ．1 mol 苹果酸可与3 mol NaOH 发生反应C ．1 mol 苹果酸与足量金属Na 反应生成1 mol H 2D ．苹果酸与互为同分异构体12．短周期元素X 、Y 、Z 、M 的原子序数依次增大，其中X 、Y 、Z 三种元素。

2019-2020学年石家庄市第二中学高三英语二模试卷及答案解析第一部分阅读（共两节，满分40分）第一节（共15小题；每小题2分，满分30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ASheffieldLincoln College of EnglishClasses for foreign students at all levels.3 months, 6 months, 9 months and one year course.Open all year.Small class (at most 12 students).Library, language laboratory and listening center.Accommodation (住宿)with selected families.25 minutes from London.Course fees for English for one year are￡1,380 with reduction for shorter periods of study.1.This passage is probably taken from _______.A.an advertisementB.a noticeC.a posterD.a piece of news2.Who will be accepted by this college?A.Both foreign and native students.B.Only foreign beginners and the advanced.C.Foreign students from beginners to the advanced.D.Only foreign students advanced.3.While you stay there, who will take care of you?A.Your parents.B.Your classmates.C.The school where you study.D.The family you have chosen.BWe asked four people who watched an online talk on technology and communication by Sherry Turkle for their opinions.Fred:The talk certainly gave me plenty of food for thought about how technology is changing our behaviour. People are constantly multitasking, whether it be emailing during meetings or texting in the checkout queue. It’s as if we can’t bear to miss out on what our online friends are up to, so we juggle the real and online world. My greatest concern is that we don’t give our brains a chance to switch off. It’sthese precious momentswhen we actually process information that helps us make important decisions.Jeremy:It was a fascinating talk and the speaker really hit the nail on the head with a couple of things. Take parental influence, for instance. How can we expect teenagers not to text while doing their homework when they witness their parents posting on social media while cooking the evening meal or waiting at a red light?Kath:So much of what the speaker said rang true. I honestly believe there’s a danger that the more connected we are, the more isolated we feel. I don’t think this is such an issue for my generation who’ve lived without technology for so long. We know how to be alone. But the under 20s are another kettle of fish. They’re so busy communicating that they never experience the feeling of solitude and run the risk of not learning how to enjoy their own company.Carl:I’m not sure to what extent I agree that people are more alone, but the way we communicate has certainly evolved. The speaker makes a good point about how we’re getting used to talking with machines like Siri or robots, which are totally lack of experience of human life. But despite such limitations, we seem to be expecting more from technology and less from each other.4. What does the underlined phrase “these precious moments” in paragraph 2 refer to?A. When our brains are free.B. When we emailing during meeting.C. When we texting in the checkout queue.D. When we juggle the real and online world.5. What suggestion may Jeremy give to the parents?A. Accompany their children when they are doing homework.B. Prevent their children using phone while doing homework.C. Set a good example for their children on using phone properly.D. Stop posting on social media in face of their children.6. What does Kath worry about the under 20s generation?A. They communicate more with others.B. They use more technology.C. It’s difficult for them to find companies.D. They don’t know how to be alone.7. What is Carl’s attitude towards the use of technology in communication?A. Favorable.B. Intolerant.C. Doubtful.D. Indifferent.CEveryone can be angry. But if you take the time to actually examine your anger instead of just “feeling” angry, you’ll have a better understanding of yourself. Knowing why you feel so angry can provide you with some surprising answers. These answers can enable you to suddenly grow spiritually and mentally.I can give you a personal example. I went to a meeting once and I was verbally attacked over an application I supported at my workplace. Various people went on and on about how terrible this system was and that it never worked. That didn’t bother me that much. I was used to that but one of the comments that was said was, “Your job is pointless.” This really upset meand at the time, I was ly furious(发怒地) with that comment.I was so angry and upset that they would treat me that way. Once I took the time to think about what was really making me so mad. I learned a lot. I realized that the comment was more truethan I wanted to admit. In the big scheme of things, my job was pointless. It wasn’t what I really wanted to be doing with my life and this was what frustrated me the most. Here I was pouring part of my heart and soul into a job I didn’t even really want to do. I was using it as a crutch(拐杖) because I didn’t have the confidence in myself to take the scary road towards what I really wanted to do. As soon as I realized that, a lot of my anger just melted away. I also realized that I needed to start focusing on what I really wanted to do.I now consider this incident as a great gift It got me back on track to moving in the direction I wanted to go with my life. I probably wouldn’t be where I am today if I hadn’t taken the time to figure out why I was really so angry.8. What made the author angry at the meeting?A. The system of the company was terrible.B. Someone said his job is insignificant.C. The policy of the company didn’t work.D. The application he supported was of no effect.9. What brought down the anger of the author?A. The apology someone made at the meeting.B. The crutch he used to take the scary road.C. His awareness of the fact that the comment was true.D. The courage he had to overcome the challenges.10. Why did the author consider the incident as a gift?A. It brought him back on track to the goal.B. It helped him get promoted to a higher position.C. It helped him change his character since then.D. It provided him with confidence in his career.11. What can be the best title of the passage?A. How to Cope with Verbal Attack in a CompanyB. Avoid Being Pointless at WorkC. Anger Is Harmful to HealthD. Understanding Yourself Better Through AngerDThe Gata used to look annoyed when they received power bills that routinely topped $200. Last September the couple moved into a 1,500-square-foot home in Premier Gardens, an area of 95 “zero-energy homes” (ZEH) just outside town. Now they're actually eager to see their electricity bills. The grand total over the 10 months they've lived in the three-bedroom house: $75. For the past two months, they haven’t paid a cent.ZEH communities are the leading edge of technologies that might someday create houses that produce as much energy as they consume. Premier Gardens is one of a half-dozen subdivisions (住宅开发项目) in California where every home cuts power consumption by 50%, mostly by using low power appliances and solar panels.Aside from the panels on the roof, Premier Gardens looks like a community of traditional homes. But inside, special windows cut power bills by blocking solar heat in summer and keeping indoor warmth winter.The rest of the energy savings comes from the solar units. They don't just feed the home they serve. If they generate more power than the home is using, the excess flows into the utility's power grid(电网). The residents are billed by “net metering”: they pay for the amount of power that they get from the grid, minus the kilowatts(千瓦) they feed into it. If a home generates more power than it uses, the bill is zero.That sounds like a bad deal for the power company, but it's not. Solar homes produce the most power on the hot sunny afternoons when everyone rushes home to turn up the air conditioner. "It helps us lower usage at peak power times," says solar expert Mike Keesee. “That lets us avoid building costly plants or buying expensive power at peak usage time.”What’s not to like? Mostly the costs. The special features can add $25,000 or more to the purchase price of a house. Tax breaks bring the cost down, especially in California, but in many states ZEHs can be extremely expensive. For the consumer, it's a matter of paying now for the hardware to save later on the power bill.12. Why is the Gata eager to see their electricity bills now?A. They want to cut down their utility' expenses.B. They want to know if they are able to pay.C. They want to see how much they have saved.D. They want to avoid being overcharged.13. What is special about the ZEH communities?A. They are built in harmony with the environment.B. They have created cutting edge technologies.C. They are subdivided into half a dozen sections.D. They aim to be independent in power supply.14. What does the "net metering" practice mean to the power company?A. More pressure at peak timeB. Reduced operational costs.C. Increased electricity output.D. Less profits in the short term.15. The author believes that buying a house in a ZEH community __________.A. is a worthy investment in the long runB. is but a dream for average consumersC. gives the owner great tax benefitsD. contributes toenvironmental protection第二节（共5小题；每小题2分，满分10分）阅读下面短文，从短文后的选项中选出可以填入空白处的最佳选项。