广西玉林市博白县高三5月模拟试题(全科)_2
广西届高三5月份考前模拟适应性联合考试理科综合物理试题Word版含答案

7、化学与生活密切相关,下列说法不正确的是A.天然气、酒精分别属于化石能源、可再生能源B.金属在潮湿空气中生锈,主要是发生析氢腐蚀C.NaClO具有强氧化性,可作织物漂白剂D.高纯硅广泛应用于太阳能电池和半导体材料的制造8、下列关于有机化合物的说法正确的是A.糖类、油脂和蛋白质在一定条件下一定都能水解B.除去乙醇中的乙酸用分液的方法C.C5H10O2能与NaHCO3反应的结构有4种D.C8H10的同分异构体有三种,它们的性质相似9、10、关于有机物的说法不正确的是A.有机物的分子式是C10H18OB.能与溴水、钠发生反应C.能发生氧化、取代反应D.与HC1发生加成的产物只有1种11、我国科研人员研制出一种室温“可呼吸”Na-CO2电池。
放电时该电池“吸入”CO2,充电时“呼出”CO2。
吸入CO2时,其工作原理如下图所示。
吸收的全部CO2中,有2/3转化为Na2CO3固体沉积在多壁碳纳米管(MWCNT)电极表面。
下列说法不正确的是A.每“呼出”22.4LCO2,转移电子数为4/3molB.“吸入”CO2时的正极反应:4Na++3CO2+4e-=2Na2CO3+CC.“呼出”CO2时钠箔电极反应式是Na++e-=NaD.放电时电池总反应是4Na+3CO2 = 2Na2CO3+C12、短周期元素W、X、Y、Z的原子序数依次增加。
m、n、r 是由这些元素组成的化合物,p、q分別站元素W、Z的气体单质。
r溶液是实验室中常见试剂,常温下0.1 mol·L-1 r浓液的pH为13。
工业上制备r和q的反应如图2所示。
下列说法正确的是A.W与X、Y、Z形成的化合物均是共价化合物B.简单离子半径:Z>Y>XC.X、Y、Z形成的化合物水溶液一定呈碱性D.X、Y形成的化合物一定含有离子键13、在25℃下,稀释HA、HB两种酸溶液,浓液pH变化的曲线如图3所示,其中V1表示稀释前酸的体积,V2表示稀释后溶液的体积,下列说法不正确的是A.a、b两点水的电离程度a小于bB.HA、HB两种酸溶液pH相同时,c(HA)<c(HB)C.曲线上a、b两点一定相等D. 25℃时,NaA溶液中c(A-)一定大于NaB溶液中c(B-)26、(14分)(NH4)2SO4是常见的化肥和化工原料,受热易分解。
2021届广西博白县中学高三英语模拟试卷及答案解析

2021届广西博白县中学高三英语模拟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AConsumer Electronics Show (CES) is a global stage where the world’s next-generation inventions are introduced towards the marketplace, and lots of companies are participating. Here are several of the amazing inventions that were introduced at the showin 2020.August Wi-Fi Smart LockIt's an intelligent door lock to protect your home, and it works on Wi-Fi. The lock doesn’t require any additional hardware to attach to it and can be used with the existing door lock. The owner can remotely access the door from anywhere to lock or unlock and can provide guest keys to family or friends. It keeps statistics and records of your door’s “lock”, “unlock”, and who have visited.Motion PillowIt’s a pillow developed for anyone who has a snoring (打鼾) problem. The solution box detects, records, and analyses the sleeping person’s snoring patterns. By changing the internal airbag’s pressure, it fixes the position of the sleeping person’s neck and head gently to improve his breathing. Three layers of noise-reducing material minimize the user’s sleeping disturbance.Ao AirIt’s a high-tech face-covering wearable air purifier with no tight seal on the mouth and nose. The purifier pulls air inside through a filtration (过滤) process and uses fans to createa clean area in front of the device. It’s designed in such a way that it can clean more than 98 % of PM2.5 through filtration.Transparent HoodThe company Continental showed off this revolutionary invention at CES 2020 that got the Best Vehicle Intelligence and Transportation Award. It’s a technology that gives the driver the ability to see barriers and blind spots from the driving seat. Four cameras take surrounding pictures so that the driver can see the real-time blind spots and prevent even parking damage too.1.Who is the text mainly intended for?A.The general public.B.The science lovers.C.The electronic companies.D.The college students.2.Which of the following descriptions of Motion pillow is correct?A.It’s intended for all those who can’t sleep well.B.It can help sleepers breathe smoothly.C.It can remove the noise around to help people sleep.D.Its pressure is changed by sleepers themselves.3.What can we infer from the text?A.August Wi-Fi Smart Lock helps improve the safety of homes.B.Ao Air produces fresh air for its users.C.Motion Pillow reduces material to minimize sleeping disturbance.D.Transparent Hood helps make driving safer and easier.BWhether for a special holiday, as a way of showing gratitude or just a way of letting someone know you care, gift giving is a universal custom Though the purpose may be similar from place to place, traditions vary widely from one country to the next. A behavior that shows respect in one place might be consideredoffensivesomewhere else. Take a look at unique gifting traditions from around the world.Here in theUS, a set of kitchen knives seems like the perfect gift idea for a wedding. However, in certain European countries likeGermany, people believe that a knife presented as a gift will cut off your friendship. There is a way to break it: Tie a coin to the knife or gift box. The receiver then returns the coin to you as a “payment”to remove the bad luck.There's a well-known Italian wedding tradition where the groom's (新郎) tie is cut into a number of tiny pieces. Wedding guests can then "buy” these tie pieces in exchange for cash. It's a fun way to give money to the new couple thatleaves guests with a wedding souvenir.As left hands are considered unclean in Indian culture, behaviors such as touching, passing money, or giving gifts are to be done with the right hand. Different from some other cultures , an odd number (奇数) of thingsor currency represents good luck. For example, £11 should be given rather than £10.InZimbabwe, it is common to directly ask for a gift. When you receive a gift without asking for it, even if the giver's family is poor, it's the worst way to reject the offering. Also, expressing thanks with actions is better than giving thanks orally (口头地).These may include jumping up and down, dancing, or whistling.4. What does the underlined word “offensive“ in paragraph 1 refer to?A. Rude.B. Creative.C. Suitable.D. Caring.5. How do people prevent friendship breaking down when giving gifts like knives?A. The guests cut the groom's tie into pieces.B. The receiver returns the coin to the giver.C. The giver gives gifts with the right hand.D. The receiver expresses thanks by dancing.6. What can we learn about the gift giving inZimbabwe?A. It is not proper to ask for a gift directly.B. It's better to reject a gift from a poor family.C. One can express thanks by writing letters.D. Showing gratitude with actions is better than words.7. Which can be a suitable title for the text?A. The Wayof Showing GratitudeB. A Fun Behavior to Respect PeopleC. Various Gift Giving TraditionsD. A Special Custom of Gift GivingCThe United Nations Educational, Scientific and Cultural Organization (UNESCO) included on December 17, 2020 China's Tai Chi on the Representative List of the Intangible(无形的)Cultural Heritage of Humanity. The decision was announced during the online meeting of the UNESCO Intergovernmental Committee for the Safeguarding of the Intangible Cultural Heritage held from December 14 to19 inKingston, capital ofJamaica.“Born in the mid-17th century in a small village named Chenjiagou located in Central China's Henan province, Tai Chi is not only a kind of traditional Wushu integrated with slow movements and deep breathing, but is also deeply rooted in many areas of Chinese culture, such as medicine and philosophy,”Zhu Xianghua says, who is the son of the famous Tai Chi master Zhu Tiancai.Although it has spread to more than 150 countries and regions, attracting more than 100 million people to practice, the idea that Tai Chi is for the elderly has stopped many young people practicing the ancient Wushu. They think of it as a slow exercise, which is specially made and better suited for their grandparents. Instead, many young people are turning to the Indian practice of yoga(瑜伽)to relieve stress, which was placed on the UNESCO's List in 2019.In order to promote Tai Chi, joint efforts have been made from individuals and the Chinese government in the last decades. Xi'an Jiaotong University requires students to learn Tai Chi. Wang Yunbing, a professor in the university's sports center, stressed that Tai Chi is not only good physical exercise-researchers from the American College of Rheumatology find that it can help manage several diseases but is also conned ted to ancient Chinese eivilization. Since 2014, the World Tai Chi Championships have been held every two years by the International Wushu Federation. It provides a platform for communication and learning between the Tai Chi masters and Tai Chi lovers around the globe. In January 2020, Tai Chi became an official event in the 2026 Dakar Youth Olympic Games.8. What does Zhu Xianghua say about Tai Chi in paragraph 2?A. It originated from fast Kung Fu action.B. It was born around the 1750s in a village.C. It is related to other cultural fields ofChina.D. It integrates Chinese medicine and western philosophy.9. Why do some young people choose to practice yoga instead of Tai Chi?A. They think it easier to practice yoga to keep fit.B. The elderly stop young people practicing Tai Chi.C. They consider Tai Chi is custom-built for old people.D. Yoga was included in the world culture earlier than Tai Chi.10. What is the main purpose of the last paragraph?A. To promote contemporary Chinese civilization.B. To show many efforts made to popularize Tai Chi.C. To stress the importance of Chinese Tai Chi masters.D. To advise people to practise Tai Chi to cure diseases.11. Which of the following is the best title for the passage?A. Tai Chi Steps on the UNESCO's List.B. Tai Chi isCompeting against Yoga.C. Tai Chi Has Regained populate Globally.D. Opinions Greatly Differ on Tai Chi and Yoga.DIn this day and age, there seems to be a move towards secondary school subjects. For that reason, someparents and some students feel that the compulsory study of English literature is misguided and disadvantageous to students, particularly if they are second language learners of English. However, there are still good reasons for the study of English literature.Students of English language sometimes fail to see the point of studying English literature,especially if they have no plans to study English or translation at university. But English literature can introduce students to a range of aspects, not only of the English language but also the culture of English-speaking countries.There are aspects of English culture that are summarised by English literature. Of course, this is quite obvious when studying the works of Shakespeare or of writers, poets and playwrights of the eighteenth and nineteenth centuries. It is, however, also true when studying other works of English literature. Students can learn about good stories and references to different aspects of English culture. They can also learn the context and meanings of famous quotes and phrases.Studying literature does not confine the students to the traditions ofEnglandbut includes the possibility of introducing them to traditions which inform English literature, such as the study of Ancient Greek drama, and to literature in other contexts, such as American literature.An enjoyment and appreciation of literature will give students the ability to develop this into an interest in books and reading as they move away from their studies and into the adult lives. They will have the confidence to approach and cope with new forms of books and writing, since they were exposed to a range of literature during their school days.When studying literature, students can learn not only language aspects such as vocabulary items but also the language aspects which can be used for specific purposes. For example, if the students are familiar with the concepts of beat and rhythm of English poems, they can improve their own writing as they are able to appreciate and apply these ideas.Finally, the study of literature can provide students with a fresh and creative angle, from which the students can approach their studies in particular and their lives in general.So the next time you are reading a newspaper article complaining of the lack of creativity and initiative in the local workforce, remember that in a small way the study of English literature can help to add a refreshing and further dimension to a person’s life.12. The author may agree that the study of English literature________.A. has a long-lasting influence on studentsB. is misguided and has more disadvantagesC. is not necessary for second language learnersD. only allows the students to learn the traditions ofEngland13. We can learn from the passage that ________.A.schools fail to care about students’ needsB. learning English literature makes students smarterC. English culture is closely related to English literatureD. the more you read literary works, the more you complain14. What’s the author’s attitude towards the study of English literature?A. Critical.B. Cautious.C. Supportive.D. Anxious.15. What’s the best title of the passage?A. Parents and Students’ DemandsB. Why We Learn English LiteratureC. English Culture and English LiteratureD. Suitable Courses for Secondary Schools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。
广西2020届高三5月份考前模拟适应性联合考试理科综合物理试题Word版含答案

7、化学与生活亲密有关,以下说法不正确的选项是A.天然气、酒精分别属于化石能源、可重生能源B.金属在湿润空气中生锈,主假如发生析氢腐化C.NaClO 拥有强氧化性,可作织物漂白剂D.高纯硅宽泛应用于太阳能电池和半导体资料的制造8、以下对于有机化合物的说法正确的选项是A.糖类、油脂和蛋白质在必定条件下必定都能水解B.除掉乙醇中的乙酸用分液的方法C.C5H10O2 能与 NaHCO3 反响的构造有 4 种D.C8H10 的同分异构体有三种,它们的性质相像9、仅用下表供给的仪器(夹持仪器和试剂任选),能实现相应实验目的的是选实验目的仪器项A 硫酸铜溶液的浓缩结晶坩埚、玻璃棒、烧杯B 用稀 H2SO4、Na2CO3 溶液比较元素S与C的非金属强弱试管、胶头滴管C 用 8.0 mol ·L-1 的盐酸配制250 mL 1.5 mol ·L-1 的 250mL 容量瓶,玻璃棒、烧盐酸杯D 测定 NaOH 溶液的物质的量浓度酸 (碱 )式滴定管,胶头滴管、烧杯10、对于有机物的说法不正确的选项是A. 有机物的分子式是 C10H18OB.能与溴水、钠发生反响C.能发生氧化、代替反响D.与 HC1 发生加成的产物只有 1 种11、我国科研人员研制出一种室温“可呼吸” Na-CO2 电池。
放电时该电池“吸入” CO2,充电时“呼出”CO2。
吸入 CO2 时,其工作原理以以下图所示。
汲取的所有CO2 中,有 2/3 转变为Na2CO3 固体堆积在多壁碳纳米管(MWCNT )电极表面。
以下说法不正确的选项是A. 每“呼出”,转移电子数为4/3molB. “吸入” CO2时的正极反响: 4Na++3CO2+4e-=2Na2CO3+CC. “呼出” CO2时钠箔电极反响式是 Na++e-=NaD.放电时电池总反响是4Na+3CO2 = 2Na2CO3+C12、短周期元素W 、X、 Y、Z 的原子序数挨次增添。
广西省玉林市2021届新高考物理五月模拟试卷含解析

广西省玉林市2021届新高考物理五月模拟试卷一、单项选择题:本题共6小题,每小题5分,共30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.在观察频率相同的两列波的干涉现象实验中,出现了稳定的干涉图样,下列说法中正确的是()A.振动加强是指合振动的振幅变大B.振动加强的区域内各质点的位移始终不为零C.振动加强的区域内各质点都在波峰上D.振动加强和减弱区域的质点随波前进【答案】A【解析】【分析】只有两个频率完全相同的波能发生干涉,有的区域振动加强,有的区域震动减弱。
而且加强和减弱的区域相间隔。
【详解】A.在干涉图样中振动加强是指合振动的振幅变大,振动质点的能量变大,A符合题意;B.振动加强区域质点是在平衡位置附近振动,有时位移为零,B不符合题意;C.振动加强的区域内各质点的振动方向均相同,可在波峰上,也可在波谷,也可能在平衡位置,C不符合题意;D.振动加强和减弱区域的质点不随波前进,D不符合题意。
故选A。
2.如图所示,质量为M的小车放在光滑水平面上,小车上用细线悬吊一质量为m的小球,M>m,用一力F水平向右拉小球,使小球和车一起以加速度a向右运动时,细线与竖直方向成α角,细线的拉力为T。
若用一力F′水平向左拉小车,使小球和车一起以加速度a′向左运动时,细线与竖直方向也成α角,细线的拉力为T′。
则()A.a′>a,T′=T B.a′=a,T′=T C.a′<a,T′>T D.aʹ<a,T′<T【答案】A【解析】【详解】对情况一的整体受力分析,受重力、支持力和拉力:()①=+F M m a再对小球分析:sin F T ma α-=②cos T mg α=③ 联立①②③解得:tan mg a Mα=,cos mg T α=; 再对情况二的小球受力分析,据牛顿第二定律,有:tan mg ma α'=④解得tan a g α'=,由于M >m ,所以a a '>;细线的拉力:cos mg T T α'==⑤ A 正确,BCD 错误。
2022年广西壮族自治区玉林市博白县第三高级中学高三物理模拟试卷带解析

2022年广西壮族自治区玉林市博白县第三高级中学高三物理模拟试卷含解析一、选择题:本题共5小题,每小题3分,共计15分.每小题只有一个选项符合题意1. (2008?山东)直升机悬停在空中向地面投放装有救灾物资的箱子,如图所示.设投放初速度为零,箱子所受的空气阻力与箱子下落速度的平方成正比,且运动过程中箱子始终保持图示姿态.在箱子下落过程中,下列说法正确的是()A.箱内物体对箱子底部始终没有压力B.箱子刚从飞机上投下时,箱内物体受到的支持力最大C.箱子接近地面时,箱内物体受到的支持力比刚投下时大D.若下落距离足够长,箱内物体有可能不受底部支持力而“飘起来”参考答案:C解:A、由于箱子在下降的过程中受到空气的阻力,加速度的大小要小于重力加速度,由牛顿第二定律可知物体一定要受到箱子底部对物体的支持力的作用,所以A错误.B、箱子刚从飞机上投下时,箱子的速度为零,此时受到的阻力的大小也为零,此时加速度的大小为重力加速度,物体处于完全失重状态,箱内物体受到的支持力为零,所以B错误.C、箱子接近地面时,速度最大,受到的阻力最大,所以箱子底部对物体向上的支持力也是最大的,所以C正确.D、若下落距离足够长,由于箱子阻力和下落的速度成二次方关系,最终将匀速运动,受到的压力等于重力,所以D错误.故选:C.2. (单选)如下图所示,在一辆表面粗糙且足够长的小车上,有质量为m1和m2的两个小球(m1>m2),两小球原来随车一起向右运动,当车突然停止时,则两个小球( ) A.一定不相碰B.m1先停下来C.不一定相碰D.m2先停下来参考答案:C3. 如图所示,在粗糙水平地面上放着一个截面为四分之一圆弧的柱状物体A,A的左端紧靠竖直墙,A与竖直墙之间放一光滑圆球B,整个装置处于静止状态。
把A向右移动少许后,它们仍处于静止状态,则A.B对墙的压力增大B.A与B之间的作用力减小C.地面对A的摩擦力减小D.A对地面的压力减小参考答案:BC4. (单选)我国“蛟龙号”深潜器进行下潜试验,从水面开始竖直下潜,最后返回水面,速度图象如图所示,则有A.本次下潜的最大深度为6mB.全过程中的最大加速度为0.025m/s2C.超重现象发生在3~4min和6~8min的时间段D.0~4min和6~10min两时间段平均速度相同参考答案:C5. 如图所示,弹簧左端固定,右端自由伸长到O点并系住物体m.现将弹簧压缩到A点,然后释放,物体一直可以运动到B点,如果物体受到的阻力恒定,则().A. 物体从A到B先加速后减速B. 物体从A到O加速运动,从O到B减速运动C.物体运动到O点时所受合力为0D.物体从A到O的过程加速度先减小后逐渐增大参考答案:AD物体从A点到O点过程,弹力逐渐减为零,刚开始弹簧弹力大于摩擦力,故可分为弹力大于摩擦力过程和弹力小于摩擦力过程,弹力大于摩擦力过程,合力向右,加速度也向右,速度也向右,即物体先加速后减速,物体从O点到B点,弹力向左,摩擦力也向左,合力向左,加速度也向左,加速度与速度反向,物体减速,故A正确、B错误;物体运动到O点时,重力和支持力平衡,弹簧弹力为零,摩擦力向左,合力等于摩擦力,故C错误;物体从A点至O点先做加速度不断减小的加速运动,后做加速度不断增大的减速运动,故D正确。
广西省玉林高中高三理综物理部分5月份适应性训练卷

图甲 图乙 某某省玉林高中高三理综物理局部5月份适应性训练卷二、选择题〔此题包括8小题。
每一小题给出的四个选项中,有的只有一个选项正确,有的有多个选项正确,全部选对的得6分,选对但不全的得3分,有选错或不答的得0分〕 14. 以下物理过程中原子核发生变化而产生新核的有( ) A.光电效应现象 B.卢瑟福的 粒子散射实验 C.太阳内部发生的剧烈反响 D.伦琴射线的产生过程 15. a 、b 两束单色光分别用同一双缝干预装置进展实验,在距双缝恒定距离的屏上得到如下列图的干预图样,图甲是a 光照射时形成的图样,图乙是b 光照射时形成的图样。
如下关于a 、b 两束单色光的说法正确的答案是( ) A .a 光子的能量较大B .在水中a 光传播的速度较小C .假设用b 光照射某金属没有光电子逸出,如此a 光照射该金属时也没有光电子逸出D .假设a 光是氢原子的核外电子从第三能级向第二能级跃迁时产生的,如此b 光可能是氢原子的核外电子从第四能级向第三能级跃迁时产生的 16.如下说法中正确的答案是( )A.任何物体的内能就是组成该物体的所有分子热运动动能的总和B. 做功和热传递在改变内能的方式上是不同的C. 只要对内燃机不断改良,就可以把内燃机得到的全部内能转化为机械能D.满足能量守恒定律的物理过程都是自发进展的 17.某质点的运动图象如下列图,如此质点:( ) A.在第1s 末运动方向发生变化 B.在第2s 末运动方向发生变化 C.在第2s 内速度越来越大 D.在第3s 内速度越来越大18. 如下列图,在电路两端接上交流电,保持电压不变,使频率增大,发现各灯的亮暗变化情况是:灯1变暗,灯2变亮,灯3不变。
如此M 、N 、L 所接元件可能是( ) A .M 为电阻,N 为电容器,L 为电感器 B .M 为电阻,N 为电感器,L 为电容器C .M 为电感器,N 为电容器,L 为电阻D .M 为电容器,N 为电感器,L 为电阻19.如下列图,沿波的传播方向上有间距均为2m 的五个质点a 、b 、c 、d 、e ,均静止在各 自的平衡位置。
2024届广西壮族自治区玉林高级中学高三下学期5月模拟(一)物理试题
2024届广西壮族自治区玉林高级中学高三下学期5月模拟(一)物理试题一、单选题1.关于对黑体的认识,下列说法正确的是( )A .黑体只吸收电磁波,不反射电磁波,看上去是黑的B .科学家在研究黑体辐射的实验规律时发现,随着温度的升高,各种波长的辐射强度都有增加,另一方面, 辐射强度的极大值向波长较短的方向移动C .爱因斯坦的光电效应方程成功地解释了黑体辐射的实验规律D .黑体辐射电磁波的强度按波长的分布除与温度有关外,还与材料的种类及表面状况有关2.自耦变压器供电方式非常适用于大容量负荷的供电,对通信线路的干扰较小,因而被客运专线以及重载货运铁路广泛应用。
如图所示,一自耦变压器环形铁芯上只绕有一个线圈,将其接在a 、b 间作为原线圈。
通过滑动触头取该线圈的一部分,接在c 、d 间作为副线圈,在c 、d 间接定值电阻R 。
该变压器为理想变压器,在a 、b 间输入电压为U 1的交变电流时,c 、d 间的输出电压为U 2。
在将滑动触头从M 点顺时针旋转到N 点的过程中,以下说法正确的是( )A .21U U ,U 2降低B .变压器输入功率减小C .变压器输出功率增大D .流过R 的电流增大3.如图所示是医院给病人输液的部分装置示意图,在输液过程中,下列说法正确的是( )A.B瓶中的药液先用完B.A、B瓶中的药液同时用完C.随着液面下降,A瓶内C处气体压强不变D.A、B瓶中的药液用完前,D泡内的气体压强大于大气压强且不随药液下降而改变4.在街头的理发店门口,常可以看到有这样的标志:一个转动的圆筒,外表有彩色螺旋斜条纹,我们感觉条纹在沿竖直方向运动,但实际上条纹在竖直方向并没有升降,这是由于圆筒的转动而使我们的眼睛产生的错觉.如图所示,假设圆筒上的条纹是围绕圆筒的一条宽带,相邻两圈条纹在沿圆筒轴线方向的距离(即螺距)为L=10cm,圆筒沿逆时针方向(从俯视方向看),以2转/秒的转速匀速转动,我们感觉到的升降方向和速度大小分别为()A.向上10cm/s B.向上20cm/s C.向下10cm/s D.向下20cm/s5.如图所示。
广西玉林市博白县2014届高三模拟试题(博白统测)理综 Word版含答案
可能用到的相对原子质量:H-1 C-12 O-16 Na-23 Fe-56 Zn-65 Cu-64第Ⅰ卷(选择题共126分)一.选择题(本题包括13小题。
每小题只有一个选项符合题意,每小题6分,共78分)1.在发酵生产中,可根据微生物群体的生长规律控制生产进程,在一定的时间内,为提高次级代谢产物生产率,一般需要A.缩短稳定期、延长对数期B.延长对数期和稳定期C.缩短调整期、延长稳定期D.延长调整期和衰亡期2.胰岛素是由“胰岛素原”在高尔基体内转化而成。
“胰岛素原”有86个氨基酸,1条肽链;胰岛素含51个氨基酸,2条肽链。
由此推知高尔基体A.加快了氨基酸的脱水缩合B.促进了限制酶的合成C.参与了肽链的剪切加工D.能独立合成蛋白质3.下列关于体液免疫的叙述,不正确...的是A.B细胞的激活信号可来自于抗原或者T细胞B.T细胞释放的淋巴因子可促进B细胞活化增殖C.激活的B细胞增殖并分化为效应B细胞和记忆细胞D.效应B细胞分泌的抗体可作用于细胞内外的抗原4.下列有关实验的操作、结果与分析,错误..的是A.在分离绿叶中的色素时,不能让滤液细线触及层析液B.探究酵母菌的呼吸方式时,控制的无关变量有温度、pH、培养液浓度等C.向稀释的苹果组织样液中加入斐林试剂摇匀,经水浴加热后可能出现砖红色沉淀D.当渗透现象示意装置中长颈漏斗内液面不再升高时,漏斗内溶液浓度等于烧杯内溶液浓度5.右图为神经-肌肉连接图(肌细胞与神经元之间存在突触)。
黑点(●)表示神经元细胞体,①~⑦表示神经纤维。
下列相关叙述正确的是A.在大脑感觉到肌肉受到刺激的过程中,神经冲动在神经纤维上出现的顺序是④⑤⑦B.在肌肉受到刺激至收缩过程中,神经冲动在神经纤维上出现的顺序可能是④⑤⑥C.肌肉在大脑支配下收缩,神经冲动在神经纤维上出现的顺序是①②③D.肌肉收缩都是在大脑支配下进行的6.化学在生产和生活中有着广泛的应用,下列做法错误的是A.用福尔马林来消毒饮用水B.用明矾做净水剂除去水中的悬浮物C.高温能杀死H7N9型禽流感病毒是因为病毒中的蛋白质受热变性D.用干冰或碘化银进行人工增雨,可以缓解旱情7.25℃,pH=3的醋酸溶液(I)和pH=l l 的氢氧化钠溶液(II),下列说法正确的是A .I 和II 的物质的量浓度均为0.001mol·L - 1B .将I 稀释l0倍,溶液中c (CH 3COOH)、c(OH - )均减小C .I 和II 溶液混合后,若溶液中c (OH - )>c(H +),则氢氧化钠过量D .I 和II 等体积混合后,溶液中离子浓度大小为 c(CH 3COO - )>c(Na +)>c(H +)>c(OH - )8.用N A 表示阿伏伽德罗常数。
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2016年高考模拟考试试题 数 学(文科)
考生注意: 1.本试卷分第Ⅰ卷(选择题)和第Ⅱ卷(非选择题)两部分。满分150分,考试时间120分钟。 2.考生作答时,请将答案答在答题卡上。第Ⅰ卷每小题选出答案后,用2B铅笔把答题卡上对应题目的答案标号涂黑;第Ⅱ卷请用直径0.5毫米黑色墨水签字笔在答题卡上各题的答题区域内作答,超出答题区域书写的答案无效,在试题卷、草稿纸上作答无效...........................。
第Ⅰ卷(选择题 共60分) 一、选择题:本大题共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. 已知集合A=Zx│-12x,集合B=420,,,则BA= ( )
A.20, B.420,, C.4201,,, D.42101,,,, 2. 复数21ii ( ) A. 1i B. 1i C. 1i D. 1i 3. 已知向量)2,1(),,1(xbxa,若a∥b,则x= ( ) A. 1或2 B. 2或1 C. 1或2 D. 1或2
4. “sinA=21”是“A=30°”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
5. 实数x,y满足,1,033,032yyxyx则zxy的最大值是( ) A. 1 B. 0 C. 3 D. 4 6. 阅读如图的程序框图,则输出的S为 ( )
A. 3 B. 21
C. 2 D. 31
7. log2sin12 + log2cos12的值为 2
( ) A. 2 B. 1 C. 21 D. 1 8. 已知函数22()1fxxaxbb (,)abR对任意实数x都有(1)(1)fxfx成立,若当[1,1]x时,()0fx恒成立,则b的取值范围是 ( ) A. 10b B. 21bb或 C. 2b D. 1b
9. 在△ABC中,角A,B,C所对的边分别是a,b,c,已知BCca则,4,22,32( )
A. 12 B.3 C.125 D.12125或 10. 函数22)(3xxfx在区间(0,1)内的零点个数是 ( ) A. 0 B.1 C.2 D.3 11. 某几何体的三视图如图所示,则该几何体外接球的体积为 ( )
A.12523 π B. 12423π
C.1252π D. 1242π 12. 过双曲线12222byax)0,0(b>a>的右顶点A作斜率为-1的直线,该直线与双曲线的两条渐近线的交点分别为B,C.若BCAB21,则双曲线的离心率是 ( ) A. 2 B.3 C.5 D.10 第Ⅱ卷(非选择题 共90分) 本卷包括必考题和选考题两部分.第(13)题~第(21)题为必考题,每个题目考生都必须作答.第(22)题~第(24)题为选考题,考生根据要求作答. 二、填空题:本大题共4小题,每小题5分,共20分.
13. 已知F是抛物线2yx的焦点,A,B是该抛物线上的两点,若│AF│+│BF│=5,则线段AB的中点到y轴的距离为 .
14. 在区间[2,3]上任取一个数a,则函数xaaxxxf)2(31)(23有极值的概率为 . 15. 对于大于或等于2的自然数n的二次方幂有如下分解方式:22=1+3,32=1+3+5,42=1+3+5+7,…,根据上述分解规律,对任意自然数n,当n≥2时,有n2= . 16. 已知四棱柱ABCD - A1B1C1D1中,侧棱A A1⊥底面ABCD,且A A1 = 2,底面ABCD的边长均 3
大于2 ,且∠DAB=45°,点P在底面ABCD内运动,且在AB,AD上射影分别为M ,N ,若│PA│= 2,则三棱锥P-D1MN的体积的最大值为 .
三、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. 17. (本小题满分12分) 已知数列na为公差不为零的等差数列,a1=1,各项均为正数的等比数列nb的第1项、第 3项、第5项分别是a1,a3,a21. (1)求数列na与nb的通项公式; (2)求数列nnba的前n项和.
18. (本小题满分12分) 为考察性别是否对喜欢数学课程有影响,从某学校随机调查了1100名学生,得到如下列联表: 男 女 总计 喜欢 400 200 600 不喜欢 200 300 500 总计 600 500 1100 (1)利用等高条形图判断性别是否对喜欢数学课程有影响? (2)能否有99%的把握认为性别对喜欢数学课程有影响? P(K2≥k) 0.100 0.050 0.025 0.010 0.001
k 2.706 3.841 5.024 6.635 10.828
.))()()(()(22dbcadcbabcadnK
19. (本小题满分12分) 如图,PC⊥平面ABC,DA∥PC,PD⊥CD,AC=BC=1,PC=2,AB=2. (1)求证:PD⊥平面BCD; (2)设Q为PB的中点,求三棱锥Q-BCD的体积.
20. (本小题满分12分) 已知椭圆C:12222byax(a>b>0)的离心率是23,且过点P(21,3). (1)求椭圆C的标准方程; 4
(2)直线l过点E(-1,0)且与椭圆C交于A,B两点,若│EA│=2│EB│,求直线l的方程.
21. (本小题满分12分) 已知函数xxaxxfln24)(2(a为常数). (1)若曲线y=f(x)在x=1处的切线过坐标原点,求a的值; (2)试讨论函数f(x)的单调性.
请考生从第(22)、(23)、(24)三题中任选一题作答.注意:只能做所选定的题目.如果多做,则按所做的第一个题目计分,作做答时请写清题号.
22. (本小题满分10分)选修4—1:几何证明选讲 如图所示,过圆O外一点M作它的一条切线,切点为A, 过A点作直线AP垂直于直线OM,垂足为P. (1)证明:OM·OP=OA2; (2)N为线段AP上一点,直线NB垂直于直线ON,且交圆 O于B点.过B点的切线交直线ON于K点.
证明:∠OKM=90°.
23. (本小题满分10分)选修4—4:坐标系与参数方程 已知在直角坐标系xOy中,曲线C的参数方程为sin42cos41yx
( 为参数),直线l经过定点P(3,5),倾斜角为3. (1)写出直线l的参数方程和曲线C的标准方程; (2)设直线l与曲线C相交于A,B两点,求│PA│·│PB│的值.
24.(本小题满分10分)选修4—5:不等式选讲 设)(xf│1x││2x│.
(1)若不等式()fx≤a的解集为21,,求a的值; (2)若xR,mxf4)(<m2,求m的取值范围. 5
2016年高考模拟考试数学(文科)试题 参考答案
1. A 【解析】A=Zx│-1≤x≤2}={-1,0,1,2},B={0,2,4},则A∩B={0,2}.
2. A 【解析】.i12)1i(i21ii2 3. A 【解析】∵a=(1,x),b=(x-1,2),a∥b,∴1×2-x(x-1)=0,∴x=2或x=-1,故选A. 4. B 【解析】本题考查充分必要条件,由“A=30°”能推出“21sinA”,反过来不能得出. 5. C 【解析】画出可行域,如图所示,将目标函数z=x-y变形为y=x-z,当z取最大值时,直线y=x-z的纵截距最小,故将直线平移到点B(3,0)时,z取到最大值3. 6. C 【解析】本题考查程序框图等基础知识,i=1,∵1≤2012,
∴;2,32121iS∵2≤2012,∴3,213131iS;∵3≤2012,∴31211211S,
i=4;∵4≤2012,∴2311311S,i=5;…,可知其周期为4,因为2012=4×503,所以i=2012,
∵2012≤2012,∴S=2,i=2013,∵2013>2012,∴输出的S=2,应选C. 7. A 【解析】 .241log6sin21log12cos12sinlog12coslog12sinlog22222 8. B 【解析】由任意实数x都有f(1-x)=f(1+x)成立,故函数f(x)的图象关于直线x=1对称,所以a=2,则在[-1,1]上,f(x)=-x2+2x+b2-b+1>0,即x2-2x<b2-b+1,等价于(x2-2x)max<b2-b+1,所以3<b2-b+1,解得b>2或b<-1.
9. D 【解析】本题考查正弦定理的应用,由正弦定理知CcAasinsin,即
,A232222·32sin
∴,323AA或∴.12125BB或 10. B 【解析】本题考查函数的零点定理的应用,因为函数f(x)=2x+x3-2单调递增,又f(0)=1-2=-1<0,f(1)=2+1-2=1>0,所以根据根的存在定理可知在区间(0,1)内函数的零点个数为1个,故选B. 11. A 【解析】本题考查三视图、几何体的体积.利用几何体的特征求解,由三视图可得该几何