辽宁省大连经济技术开发区2019届高三英语上学期第二次月考试题(无答案)

铜仁一中2019届高三年级英语第二次月考第一部分听力（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. What is the man?A. A weather forecaster.B. A pilot.C. A trainer.2. What does the man imply?A. The woman should go on playing chess.B. He wants to play chess with the woman.C. The woman is weak in playing chess.3. Why does the man stop his talk with the woman?A. He isn't interested in her words.B. He is expecting another call.C. He is angry with her.4. When will the man arrive in Cairo?A. In the morning.B. At noon.C. In the afternoon.5. What are the speakers talking about?A. A story.B. A textbook.C.A movie.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。

得胜高中2018—2019学年度第一学期高三第二次月考物理试卷试卷满分：100分答题时间：90分钟第Ⅰ卷一、选择题（本大题共有14小题，每小题4分，合计56分；1～9小题每题只有一项符合正确选项，10～14小题每题至少有两项是正确选项。

）1. 关于物体的受力和运动，下列说法中正确的是( )A. 物体在不垂直于速度方向的合力作用下，速度大小可能一直不变B. 物体做曲线运动时，某点的加速度方向就是通过这一点的曲线的切线方向C. 物体受到变化的合力作用时，它的速度大小一定改变D. 做曲线运动的物体，一定受到与速度不在同一直线上的合外力作用2．一个宇航员在半径为R的星球上以初速度v0竖直上抛一物体，经t s后物体落回宇航员手中，为了使沿星球表面抛出的物体不再落回星球表面，抛出时的速度至少为（ ）A ．R t v 0B ．t R v 02C ．t Rv 0 D ．Rtv 0 3．如图所示，两个小球固定在一根长为L 的杆的两端，绕杆上的O 点做圆周运动．当小球A 的速度为v A 时，小球B 的速度为v B .则轴心O 到小球B 的距离是( )A.B.C.v A ＋v B v A LD.v A ＋v B v BL 4．已知地球绕太阳公转周期及公转轨道半径分别为T 和R ，月球绕地球公转周期及公转轨道半径分别为t 和r ，则太阳质量与地球质量之比为（ ）A． B． C． D．5．如图，船从A 处开出后沿直线AB 到达对岸，若AB 与河岸成37°角，水流速度为4 m/s ，则船在静水中的最小速度为 A B V A V B O( )A ．2 m/sB ．2.4 m/sC ．3 m/sD ．3.5 m/s6．从空中以40m/s 的初速度平抛一重为10N 的物体。

物体在空中运动3s 落地，不计空气阻力，取g=10m/s 2，则物体落地前瞬间，重力的瞬时功率为A.300WB.400 WC.500WD.700W7．如图所示，将质量为m 的小球以速度v 0由地面竖直向上抛出。

2018-2019学年度第一学期高三第二次月考化学试卷考试时间：90分钟 分值：100分可能用到的相对分子质量：H-1 C-12 N-14 O-16 S-32 K-39 Mg-24 Al-27 Fe-56第Ⅰ卷（选择题 共54分）一、选择题（本题包括18小题，每小题3分,每题只有一个选项符合题意） 1.下列说法正确的是( )A. 南朝·《竹林七贤与启荣期》砖画的砖块的主要成分是二氧化硅B.《本草经集注》中关于鉴别硝石(KNO 3)和朴硝(Na 2SO 4)的记载：“以火烧之，紫青烟起，乃真硝石也”，该方法应用了焰色反应C.宋·王希孟《千里江山图》卷中的绿色颜料铜绿的主要成分是氢氧化铜D.“笔、墨、纸、砚”在中国传统文化中被称为“文房四宝”，用石材制作砚台的过程是化学变化2.化学与生活密切相关。

下列说法错误的是（ ）A.碳酸钠可用于去除餐具的油污B.漂白粉可用于生活用水的消毒C.氢氧化铝可用于中和过多胃酸D.碳酸钡可用于胃肠X 射线造影检查 3.下列关于物质分类的说法，正确的是 （ ） A.化合物：BaCl 2、Ca(OH)2、HNO 3、HTB.碱性氧化物：过氧化钠、氧化镁、四氧化三铁、氧化钙C.酸性氧化物：氧化铝、二氧化碳、三氧化硫、二氧化氮D.同素异形体：金刚石、石墨、C 60 4.下列说法正确的是( )A.1L0.1mol ·1L -NH 4Cl 溶液中，4NH +的数量为0.1A N B.2.4gMg 与H 2SO 4完全反应，转移的电子数为0.1A N C.标准状况下，2.24L 苯在氧气中完全燃烧，得到0.6N A 个CO 2 D.14g 乙烯和丙烯混合气体中的氢原子数为2N A 5.下列各项叙述正确的是（ ）①水玻璃、碱石灰、漂白粉、福尔马林、淀粉均为混合物 ②进行中和热的测定实验时，必须用到两个量筒和两个温度计 ③碱性氧化物一定是金属氧化物，金属氧化物不一定是碱性氧化物 ④有单质参加的反应或有单质产生的反应一定是氧化还原反应 ⑤Ca(HCO 3)2、Fe(OH)3可由化合反应制得，Fe 3O 4可以由置换反应制得 ⑥蒸馏在天然香料，药物提取及核燃料处理等技术中得到了广泛的应用 A.①③⑤ B.①⑤⑥ C.②③⑤ D.①②④⑥6.下列装置或原理能达到实验目的的是( )A.制取Cl2B.除去Cl2中的HClC.氯气的尾气处理D.测氯水的pH7. 2011年3月11日，日本本州岛仙台港发生9.0级地震，地震引发海啸，食盐、蔗糖、醋酸、“84消毒液”、明矾等是灾后居民日常生活中经常使用的物质。

2018-2019学年度第一学期高三第二次月考化学试卷考试时间：90分钟 分值：100分可能用到的相对分子质量：H-1 C-12 N-14 O-16 S-32 K-39 Mg-24 Al-27 Fe-56第Ⅰ卷（选择题 共54分）一、选择题（本题包括18小题，每小题3分,每题只有一个选项符合题意） 1.下列说法正确的是( )A. 南朝·《竹林七贤与启荣期》砖画的砖块的主要成分是二氧化硅B.《本草经集注》中关于鉴别硝石(KNO 3)和朴硝(Na 2SO 4)的记载：“以火烧之，紫青烟起，乃真硝石也”，该方法应用了焰色反应C.宋·王希孟《千里江山图》卷中的绿色颜料铜绿的主要成分是氢氧化铜D.“笔、墨、纸、砚”在中国传统文化中被称为“文房四宝”，用石材制作砚台的过程是化学变化2.化学与生活密切相关。

下列说法错误的是（ ）A.碳酸钠可用于去除餐具的油污B.漂白粉可用于生活用水的消毒C.氢氧化铝可用于中和过多胃酸D.碳酸钡可用于胃肠X 射线造影检查 3.下列关于物质分类的说法，正确的是 （ ） A.化合物：BaCl 2、Ca(OH)2、HNO 3、HTB.碱性氧化物：过氧化钠、氧化镁、四氧化三铁、氧化钙C.酸性氧化物：氧化铝、二氧化碳、三氧化硫、二氧化氮D.同素异形体：金刚石、石墨、C 60 4.下列说法正确的是( )A.1L0.1mol ·1L -NH 4Cl 溶液中，4NH +的数量为0.1A N B.2.4gMg 与H 2SO 4完全反应，转移的电子数为0.1A N C.标准状况下，2.24L 苯在氧气中完全燃烧，得到0.6N A 个CO 2 D.14g 乙烯和丙烯混合气体中的氢原子数为2N A 5.下列各项叙述正确的是（ ）①水玻璃、碱石灰、漂白粉、福尔马林、淀粉均为混合物 ②进行中和热的测定实验时，必须用到两个量筒和两个温度计 ③碱性氧化物一定是金属氧化物，金属氧化物不一定是碱性氧化物 ④有单质参加的反应或有单质产生的反应一定是氧化还原反应 ⑤Ca(HCO 3)2、Fe(OH)3可由化合反应制得，Fe 3O 4可以由置换反应制得 ⑥蒸馏在天然香料，药物提取及核燃料处理等技术中得到了广泛的应用 A.①③⑤ B.①⑤⑥ C.②③⑤ D.①②④⑥6.下列装置或原理能达到实验目的的是( )A.制取Cl2B.除去Cl2中的HClC.氯气的尾气处理D.测氯水的pH7. 2011年3月11日，日本本州岛仙台港发生9.0级地震，地震引发海啸，食盐、蔗糖、醋酸、“84消毒液”、明矾等是灾后居民日常生活中经常使用的物质。

英语试题 第1页（共12页） 英语试题 第2页（共12页）2019年第二次全国大联考【新课标I 卷】英 语（考试时间：120分钟 试卷满分：150分）注意事项：1. 答卷前，考生务必将自己的姓名、准考证号填写在答题卡上。

2. 回答选择题时，选出每小题答案后，用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。

回答非选择题时，将答案写在答题卡上，写在本试卷上无效。

3. 考试结束后，将本试卷和答题卡一并交回。

第一部分 听力（共两节，满分30分）做题时，请先将答案标在试卷上。

录音内容结束后，你将有两分钟的时间将试卷上的答案转涂到答题卡上。

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。

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。

例：How much is the shirt?A. £ 19. 15.B. £ 9. 18.C. £ 9. 15.答案是 C 。

1. How much did the bank lose according to the man?A. $2,000,000.B. $4,000,000.C. $6,000,000. 2. When should the passengers check in for flight 452?A. At 3:50.B. At 4:50.C. At 5:50. 3. Where does the conversation most probably take place?A. In a hotel.B. In a post office.C. In the woman’s house. 4. What are the speakers mainly talking about?A. Chocolate.B. Cookies.C. Milk. 5. What was the woman doing when the earthquake happened? A. She was washing her hair. B. She was feeding the dog. C. She was cleaning the bathroom.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。

大连开发区得胜高中2018-2019学年度第一学期高三年级第二次月考数学（理）试题考试范围：集合、函数、导数、三角函数 ，解三角形。

时间：120分钟 总分：150分一、单选题（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．sin 43cos13cos 43sin13︒︒-︒︒的值等于( ) A ．12 B ．2．已知集合，则中元素的个数为（ ）A ．9B ．8C ．5D ．43．函数3sin(2)26y x π=-+的单调递减区间是 ( )A. 2,2,63k k k Z ππππ⎡⎤-++∈⎢⎥⎣⎦ B. 52,2,36k k k Z ππππ⎡⎤++∈⎢⎥⎣⎦C. ,,63k k k Z ππππ⎡⎤-++∈⎢⎥⎣⎦D. 5,,36k k k Z ππππ⎡⎤++∈⎢⎥⎣⎦4．已知锐角满足，则的值为（ ） ABD5．已知 (31)4,1()log ,1aa x a x f x x x -+<⎧=⎨>⎩ 是(,)-∞+∞上的减函数，那么a 的取值范围是（ ）A.(0,1)B.1(0,)3C.1[,1)7D. 11[,)736. 已知函数f (x )＝x 2－2x ＋4在区间[0，m ](m ＞0)上的最大值为4，最小值为3，则实数m 的取值范围是( )A ．[1，2]B ．(0，1]C ．(0，2]D ．[1，＋∞)(){}223A x y xy x y =+∈∈Z Z ，≤，，A ,αβ()3cos 5ααβ=-=-sin β7.在△中，“”是“”的（ ）A. 充分而不必要条件B. 必要而不充分条件C. 充分必要条件D. 既不充分又不必要条件 8. 已知角α的终边上一点的坐标为（sin，cos），则角α值为( )A.B.C.D.9. 已知奇函数()f x 在R 上是增函数，()()g x xf x =.若2(log 5.1)a g =-，0.8(2)b g =，(3)c g =，则a ，b ，c 的大小关系为( ) A ．a b c <<B.c b a <<C.b a c <<D.b c a <<10．函数xxy cos 12sin -=的部分图像大致为( )A ．B ．C ．D ．11．已知函数f(x)＝⎩⎪⎨⎪⎧e x＋a ，x ≤0，3x －1，x ＞0(a∈R)，若函数f(x)在R 上有两个零点，则a 的取值范围 ( )A ．(－∞，－1)B ．(－∞，0)C ．(－1,0)D ．[－1,0) 12． f(x)＝x 2－aln x 在(1，＋∞)上单调递增，则实数a 的取值范围为( )A ．a<1B ．a≤1 C．a<2 D ．a≤2ABC A B >sin sin A B >23π23π56π23π53π116π二、填空题（本题共4小题，每小题5分，共20分） 13 已知f(x)＝x 2＋3xf′(2)，则f′(2)＝________.14 函数f(x)＝Asin(ωx ＋φ)(A>0，ω>0，|φ|<π)的部分图像如图所示，则函数f(x)的解析式为 ________.15 △ABC 的内角A ，B ，C 的对边分别为a ，b ，c ，若2bcos B ＝acos C ＋ccos A ，则B ＝________． 16. 若直线y = kx +b 是曲线y = ln x +2的切线，也是曲线y = ln(x +1)的切线，则b = .三、解答题（共70分。

辽宁省大连经济技术开发区得胜高级中学2019届高三第二次月考物理试题试卷满分：100分 答题时间：90分钟第Ⅰ卷一、选择题（本大题共有14小题,每小题4分,合计56分；1～9小题每题只有一项符合正确选项,10～14小题每题至少有两项是正确选项。

）1. 关于物体的受力和运动,下列说法中正确的是( )A. 物体在不垂直于速度方向的合力作用下,速度大小可能一直不变B. 物体做曲线运动时,某点的加速度方向就是通过这一点的曲线的切线方向C. 物体受到变化的合力作用时,它的速度大小一定改变D. 做曲线运动的物体,一定受到与速度不在同一直线上的合外力作用2．一个宇航员在半径为R 的星球上以初速度v 0竖直上抛一物体,经t s 后物体落回宇航员手中,为了使沿星球表面抛出的物体不再落回星球表面,抛出时的速度至少为（ ）A ．R t v 0B ．t R v 02C ．tR v 0 D ．Rtv 0 3．如图所示,两个小球固定在一根长为L 的杆的两端,绕杆上的O 点做圆周运动．当小球A 的速度为v A 时,小球B 的速度为v B .则轴心O 到小球B 的距离是( )A.B. C.v A ＋v B v A L D.v A ＋v B v BL 4．已知地球绕太阳公转周期及公转轨道半径分别为T 和R,月球绕地球公转周期及公转轨道半径分别为t 和r,则太阳质量与地球质量之比为（ ）A ．B ．C ．D ．5．如图,船从A 处开出后沿直线AB 到达对岸,若AB 与河岸成37°角,水流速度为B4 m/s,则船在静水中的最小速度为( )A ．2 m/sB ．2.4 m/sC ．3 m/sD ．3.5 m/s6．从空中以40m/s 的初速度平抛一重为10N 的物体。

物体在空中运动3s 落地,不计空气阻力,取g=10m/s 2,则物体落地前瞬间,重力的瞬时功率为A.300WB.400 WC.500WD.700W7．如图所示,将质量为m 的小球以速度v 0由地面竖直向上抛出。

李兆基中学2019届高三第二次月考英语试题（考试时间：120分钟试卷满分：120分）第一部分阅读理解共两节，满分40分）第一节（共15小题；毎小题2分，满分30分）阅读下列短文，从每题所给的A、B、C和D四个选项中，选出最佳选项。

AHead to one of these festivals and you'll find critically praisedbands, first-rate literature and peaceful settings for enjoying fresh juiceas the sun goes downPrimavera Sound, Barcelona, SpainMay 31-june 4Primavera has become the go-to festival for those who love goodtunes, but can't bear the thought of a weekend s campingBands play at the Pare del Forum, with party goers either staying inhotels or rented apartments. This years artists include Wild BeastsBroken Social Scene and JapandroidsMelt. Grafenhainichen, GermanyJuly 14-16Melt’ s reputation as Europe’ s biggest party festival has beenassured for years Techno and house DJS provide lots of entertainment, fitting perfectly with the attractive setting in an industrial museum betweenLeipzig and Berlin.Bigger names include, too, such as the talented Warpaint and thesleepy beats of BonoboRoskilde, DenmarkJune 24-july 1One of Europe's biggest festivals, Roskilde is centuries-long inmusic history Big acts like Foo Fighters and The Weekend provide the main draw.It’s in the outer fields where things get interesting, with street artin GraffitiCity and the Ghettoblaster for some hardcore party action.Port Eliot, Cornwall, UKJuly 27-30Set in the grounds of a beautiful stately home in St Germans,Cornwall, Port Eliot is unlike any other festivals. Festival goers canexplore the rooms of the attractive house, go wild swimming in the riverand take part in workshops on everything from cheese-making to food-searching. Or they can simply spend time listening to the bestalternative music out there. This is a relaxing festival for modern life1. In which country can people see Wild Beasts on June 2?A. SpainB. Germany,C. Denmark.D. The UK2. Which festival has a history of over 100 years according to the text?A Primavera Sound. B. Melt. C. RoskildeD. Port Eliot3. What is special about Port Eliot?A. It gives party goers chances to play musicB. It provides rooms for party goers to live inC. It provides party goers with hands-on experiencesD Its host city is located between the river and the seaBAll too often, when children are diagnosed with a disability orserious illness, their world is filled with appointments anddisappointments. They might face lengthy hospital stays and painfultreatments, not to mention missed opportunities to be a kid.Madison Steiner-nicknamed “Peach”is making a difference inthese children’s lives by giving them the gift of recognizing theirindividuality that shines through their health conditions.In 2011, she decided to put her caring on canvas (帆布)-butinstead of turning to a traditional art medium, she started paintingcustom sneakers for children living with serious health conditions.As her giving gained strength, Steiner founded a nonprofitorganization, Peach’s Neet Feet, based in her home state of NewMexico. Today, with the help of dozens of artists across the US, Peach’sNeet Feet provides 50 pairs of shoes tochildren each month. Each pairis customized for a specific child’s interests and courageous fight. Theorganization coordinates(协调) donations with more than 20 hospitalsand other nonprofit ones nationwide.Since 2011, Peach's Neet Feet has donated more than 3,000 pairsshoes and helped 4,000 families withother services, including carepackages for children (with toys and art supplies), necessities forfamilies facing lengthy hospital stay s “Peach Parties”and otherevents toraise funds and community awareness, an d a support network for children and familiesIn 2012. Steiner s work was honored as the winner of the RandomActs of Kindness Foundations Extreme Kindness Challenge, whichgave Peach’s Neet Feet the opportunity to work with Storytellers forGood to produce a video about the shoes impact. Steiner was a guestspeaker at the Chopra Foundation Sages and Scientists Symposium2013, and Peach 's Neet Feet received the Sheckler Foundation 's “BeThe Change”award in May 2014. In September 2014, she spoke at the5th annual TED&ABQ conference in Albuquerque, N.M.4. Which of the following words can best describe Peach according to the text?A .Creative and helpful.B. Confident and straightforwardC. Considerate and modest.D. Easy-going and productive.5. What is special about the shoes offered by Steiner?A. They can cure the kids of the cancer.B. They can be transformed into a toy.C. They are rare and valuable for collectorsD. They are made to suit special tastes and needs6. What does Peach 's Neet Feet provide for the people besides the artshoes?A. Help in the form of checkB. Medical care for patientsC .Company in hospital.D. A support network for sick kids7. What does the last paragraph mainly talk about?A. Steiner 's ambitionB. Steiner s achievementsC. Steiner s passion to the charity.D．The activities held by“ Peach Parties”CAsk any of my stepchildren and they 'll agree: The quickest way toproduce along and angry shout is to complain, " It's not fair!"I cango on and on about how fairness has nothing to do with who gets theslightly larger cookie, and how important it is to be gratitude for all ofthe incredible privileges we have. And yet, I displayed right by thoseinspiring quotes about thankfulness posted by family and friends onFacebook. I’ve laughed at the conce pt of keeping a gratitude journal, adaily diary of things in my life to be thankful for, as seen on Oprah andin many studies about happiness. (Despite all the evidence torecommend it, keeping one just doesn’t feel like me.)But according to a recent study, people who practise gratitude aremore joyful and optimistic and less lonely, I would love to experience allof those things, so why do I get all sick inside when I hear aboutpractising gratitude? The biggest reason is that it sometimes feelsslightly dishonest.Earlier this year, though, I decided it was time to give gratitude areal chance;I wanted to see firsthand if it would change myoutlook. Then, a stream of terrible things happened-it felt like everynight on the news there was another tragedy, and it felt like the wholeworld was going to ruin. Putting aside a few minutes a day to thinkabout all the awesome things in my life felt both unimportant anddisrespectful. But I sat down and tried it. While I wouldn 't go as far as ajournal, I did try to spend a few minutes each day feeling thankful.And something clicked. Allowing myself small moments of gratitudedidn’t feel as tired as I thought it would, it felt uplifting, evenrestorative. I realized that gratitude as a goal still makes mechange. Appreciating what we have can help us understand what otherpeople are, both far away and closer to home.8. Why does the author mention the story of his stepchildren?A. To introduce the topic of the textB. To express they are specially naughtyC. To show how fair he is to themD. To present the benefitsof practicing gratitude9. What was the author s attitude to practising gratitude in daily life inthe beginning?A. Supportive,B. Disapproving.C. Ambiguous.D. Relaxed10. How did the author feel when actually practising gratitude earlierthis year?A. Spiritless.B. Respectful.C. Amused.D. Proud11. What does the author mean by saying w And something clicked" inthe last paragraph?A. The changes happened to him.B. The living conditions got worse.C. Small moments were valuableD. The help was timely and importantDThe effect on happiness of exposure to nitrogen dioxide (NO2), a gasmostly produced in diesel fumes（柴油机， is comparable to the effectfrom losing a job, ending a relationship or the death of a partner,research suggests The study found a “significant and negative association” between life satisfaction and levels of the pollutant, which causes lungproblems. Sarah J Knight and Peter Howley of YorkUniversity took lifesatisfaction data from the British Household Panel Survey and UKHousehold Longitudinal Survey and compared it with detailed airquality records from the Department for Environment, Food and RuralAffairsGiven that far more people are exposed to NO, than sufferunemployment or end a relationship, Knight and Howley suggest thatthe benefits to society from reducing such emissions (排放） would be substantiveThe highest levels of NO2 occur in London, with the lowest levels inparts of south-west England. The capital has the honour of being hometo the worst NO2. hotspot in Europe: Marylebone Road, which recordedthe highest annual mean levels of the pollutant, more than double thelegal EU limitPollution from nitrogen oxides (NO)is responsible for tens ofthe thousands of premature deaths（过早死） across Europe， with the UKsuffering a particularly high toll. Much of the pollution is produced bydiesel cars, which emit about six times more than allowed in the officiallab-based tests.The European Environment Agency said the UK had 11,940premature deaths in 2013 from NO, The number was down from 14. 100in the previous year, but was still the second worst in Europe after Italy.12. Which can replace the underlined word substantive" inparagraph 3?A. terribleB. realC. normalD. special13. Which of the following areas was worst polluted by NO2?A. Southwest EnglandB. Southeast England.C. Marylebone RoadD. The rural area near London14.How many premature deaths were caused by nitrogen dioxide in theUK in 2012?A.11,940.B.14,100.C.15,100.D.19,14015. What can be the best title for the text?A. How to deal with air pollution efficiently.B. The biggest killer of man nowadays-air pollutionC. Diesel fumes should be responsible for air pollution.D. Air pollution from NO2/ NO is as bad for happiness as partnersdeath第二节（共5小题；每小题2分，满分10分）根据短文内容从短文后的选项中选出能填入空白处的最佳选项。

得胜高中2018-2019学年度第一学期高三第二次月考数学（文）学科试卷一、选择题（每小题5分，合计60分）1.已知集合{}02A =，，{}21012B =--，，，，，则A B =I （ ） A ．{}02，B ．{}12，C ．{}0D ．{}21012--，，，，2.不等式2620x x +-≤的解集是( )A.{}21|32x x -≤≤ B .{2|3x x ≤-,或}12x ≥ C.{}1|2x x ≥ D.{}21|,32x x x ≥≤-或3.“a ＞0”是“a ＞0”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4.设函数()R x x x f ∈⎪⎭⎫⎝⎛-=,22sin π，则()x f 是( ) (A) 最小正周期为π的奇函数 (B) 最小正周期为π的偶函数 (C) 最小正周期为2π的奇函数 (D) 最小正周期为2π的偶函数5．已知向量a ，b 满足||1=a ，1⋅=-a b ，则(2)⋅-=a a b （ ） A ．4B ．3C ．2D ．06.已知a ＞0，b ＞0，a+b=2，则y=14a b +的最小值是 ( )A ． 72 B ．4C ． 92 D ．57．函数 ()2tan 1tan xf x x=+的最小正周期为（ ）A ．4π B ．2πC ．πD ．2π8．在ABC △中，AD 为BC 边上的中线，E 为AD 的中点，则EB =u u u r（ ）A ．3144AB AC -u u ur u u u r B ．1344AB AC -u u ur u u u r C ．3144AB AC +u u ur u u u rD ．1344AB AC +u u ur u u u r9．在ABC △中，5cos 2C =，1BC =，5AC =，则AB =（ ） A ．42B ．30C ．29D ．2510．函数422y x x =-++的图像大致为（ ）11．设函数()()321f x x a x ax =+-+．若()f x 为奇函数，则曲线()y f x =在点()00，处的切线方程为（ ） A ．2y x =-B ．y x =-C ．2y x =D ．y x =12．方程x 3－6x 2＋9x －4＝0的实根的个数为 ( )A ．0B ．1C ．2D ．3二、填空题（每小题5分，合计20分）13．已知函数()()22log f x x a =+，若()31f =，则a =________．14．若x y ，满足约束条件220100x y x y y --⎧⎪-+⎨⎪⎩≤≥≤，则32z x y =+的最大值为________．15．已知向量()=1,2a ，()=2,2-b ，()=1,λc ．若()2∥c a +b ，则λ=________． 16．已知函数())ln1f x x =+，()4f a =，则()f a -=________．三、解答题（第17题10分，第18-22题每题12分，合计70分）17．已知不等式220ax bx +->的解集是124x x ⎧⎫-<<-⎨⎬⎩⎭，求,a b 的值；18．记n S 为等差数列{}n a 的前n 项和，已知17a =-，315S =-． （1）求{}n a 的通项公式；（2）求n S ，并求n S 的最小值．19． 已知函数22()3sin 2sin cos cos 2f x x x x x =++-. （Ⅰ）求()4f π的值；（Ⅱ）求函数()f x 的最小正周期及单调递增区间.20．在锐角ABC ∆中，a ，b ，c 分别为内角A ，B ，C 所对的边，且满足2sin 0b A -=．（Ⅰ）求角B 的大小；（Ⅱ）若5a c +=，且a c >，b =，求AB ACu u u r u u u rg的值．21．已知数列{}n a 满足11a =，()121n n na n a +=+，设nn a b n=． ⑴证明数列{}n b 是等比数列，并求{}n b 的通项公式； ⑵求{}n a 的通项公式及前n 项和n S ．22．已知函数()xf x e ax =-（a 为常数）的图像与y 轴交于点A ，曲线()y f x =在点A 处的切线斜率为1-. （1）求a 的值及函数()f x 的极值；（2）证明：当0x >时，2x x e <得胜高中2018-2019学年度第一学期高三第二次月考数学（文）学科试卷答题卡一、选择题二、填空题13. 14. 15. 16.三、解答题第17题.第18题.第19题.第20题. 第21题.第22题.。