【2018广州二模理综二模】广东省广州市2018届高三4月综合测试(二模)理综试题

7.《物理小识》中对镀金法有如下叙述:“以汞和金涂银器上，成白色，入火则汞去,而金存,数次即黄。

”其中“入火则汞去”是指A.蒸发B.升华C.分液D.分馏8.苦艾精油是一种神经毒素，可分离出多种化合物，其中四种的结构如下:下列说法错误的是A.①②③分子中所有的碳原子不可能处于同一平面内B.①②均能使酸性高锰酸钾溶液褪色C.②、④互为同分异构体D. ③的一般代物有5种9.设N A为阿伏加德罗常数的数值。

下列说法正确的是A.25℃时,pH=12的氨水中所含OH-的数目为0.01N AB.36g由35Cl 和37C1组成的氯气中所含质子数一定为17N AC 7.8 g Na2O2与足量酸性KMnO4溶液反应,转移的电子数为0.2N AD.30 g由甲醛(HCHO)与乙酸混合的溶液中所含C-H键的数目为2N A10.短周期主族元素W、X、Y、Z的原子序数依饮增大,X、Y的最外层电子数之和等于6,且X、Y 位于不同的周期,W的最简单气态氢化物与Z的单质形成的混合气体在光照条件下可得到Z的氢化物和油状混合物。

下列说法正确的是A.简单离子的半径: Y>ZB.X的最简单氢化物与乙的单质混合后可产生白烟C.Z的氧化物对应的水化物酸性-定比W 的强D.W、X、Y 三种元素形成的化合物YWX的水溶液呈中性11.《战争的气体化学和分析》中介绍了一种制取COC12(光气,熔点为-118℃,沸点为8.2℃,微溶于水,易溶于甲苯等有机溶剂)的方法,其实验装置如图所示(夹持装置已省略)。

已知:3CCl4+2H2SO4(浓) 3COCl2↑+4HCl+ S2O5Cl2。

下列说法正确的是A.该反应属于氧化还原反应B.自来水从冷凝管的X口通入，且被冷凝的物质是CCl4C.可将装置丁的尾气通过导管直接通入NaOH溶液中进行尾气处理D.装置乙中可收集到光气的甲苯溶液,装置丙、丁均可收集到液态光气12.用电渗析法可将含硝酸钠的废水再生为硝酸和氢氧化钠,其装置如图所示。

广东省广州市2018年普通高中毕业班综合测试（二）理科综合生物试题一、单项选择题：1．下列对“细胞学说”理解合理的是①揭示了动植物体结构的统一性②一切生物都是由细胞和细胞产物构成的③提出了细胞膜结构的流动镶嵌模型④细胞是一个相对独立的有机体A.①②B. ②③C. ③④D.①④2.下列对一条核苷酸链的说法不合理．．．的是A．碱基C和碱基G的数目可不相等B．组成核苷酸的糖是五碳糖C．磷酸基团与碱基相连接D．可由四种核糖核苷酸组成3.右图表示物质S在酶E的催化下水解成P的反应图解，下列叙述正确的是A．酶E可为该反应提供活化能B．酶E水解的产物是H2O、CO2等物质C．若S是麦芽糖，则可用斐林试剂来检测P的生成情况D．若S代表二肽，则E、P可分别代表肽酶、氨基酸4．绿豆芽是在无光条件下由绿豆萌发而成。

以下叙述正确的是A．绿豆芽的生长过程只需要生长素的调节B．绿豆萌发成豆芽的过程中有机物总量减少C．绿豆芽尖处于分裂期的细胞中含有两个中心体D．赤毒素通过促进乙烯的合成来促进绿豆芽细胞的伸长5. 下表是在适宜条件下测得某植物叶绿体色素吸收光能的情况，有关分析不．正确的是A．O2的释放速率变化与全部色素吸收光能百分比变化基本一致B．由550nm波长的光转为670nm波长的光时，叶绿体中C3的量会增加C．该植物缺乏Mg时，叶绿素a吸收的光能百分比的减少幅度更大D．环境温度降低，该植物对光能的利用能力降低6．某地土壤中小动物的物种数和个体总数如下表，以下有关叙述正确的是A．表中的信息说明群落具有垂直结构B．不同土层中小动物的分布与光照无关C．不同土层中的小动物都是消费者D．土壤中某种小动物个体总数下降则该地物种丰富度随之下降二、双项选择题：24.下列分析正确的是25.某种植物（二倍体）叶缘的锯齿状与非锯齿状受叶缘细胞中T 蛋白含量的影响，T 蛋白的合成由两对独立遗传的基因（A 和a ， T 和t ）控制，基因T 表达的产物是T 蛋白，基因A 抑制基因T 的表达。

秘密★启用前试卷类型：A 2018年广州市普通高中毕业班综合测试（二）语文2018.4本试卷10页，22小题，满分150分。

考试用时150分钟。

注意事项：1．答卷前，考生务必将自己的姓名、考生号、试室号和座位号填写在答题卡上。

2．作答选择题时，选出每小题答案后，用2B铅笔将答题卡上对应题目选项的答案信息点涂黑；如需改动，用橡皮擦干净后，再选涂其他答案。

答案不能答在试卷上。

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各题目指定区域内相应位置上；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。

不按以上要求作答无效。

4．考生必须保证答题卡的整洁。

考试结束后，将试卷和答题卡一并交回。

一、现代文阅读（35分）（一）论述类文本阅读（本题共3小题，9分）阅读下面的文字，完成1～3题。

审美是人的一种特定的生存方式与生活方式，人的审美具有共通性也具有民族的相异性。

西方人称“美是理念的感性显现”，而中国人则称“生生为美”。

“生生美学”产生于丰厚的中国传统文化土壤之中，具有明显的区别于西方美学的中国气派与中国风格。

“天人合一”的文化传统是“生生美学”的文化背景。

“天人合一”是中国古代具有根本性的文化传统，是中国人观察问题的特有立场和视角，影响甚至决定了中国古代各种文化艺术形态的产生发展与基本面貌，构成“生生美学”之文化背景。

“天人合一”体现了中国传统文化对于天人关系的理解，也体现了中国传统美学对一种宏阔的东方式“中和之美”的诉求，相异于西方古代希腊对微观的物质的“和谐之美”的诉求。

阴阳相生的古典生命美学是“生生美学”的基本内涵。

“天人合一”构成了人与自然的生命共同体，“天人合一”之“一”就是“生”，即生命。

“生”有一个中间环节是“气”，阴阳之气为生命化生之本，二气交感诞育万物，成为宇宙人生的根本规律。

《周易》言“一阴一阳之谓道”，阴阳之道成为万事万物社会人生包括艺术创作的基本规律。

2018年市普通高中毕业班综合测试（二）物理试题和答案2018.04.24二、选择题：本题共8小题，每小题6分，共48分。

在每小题给出的四个选项中，第14～18题只有一项符合题目要求，第19～21题有多项符合题目要求。

全部选对的得6分，选对但不全的得3分，有选错的得0分。

14．a、b两离子从平行板电容器两板间P处垂直电场入射，运动轨迹如图。

若a、b的偏转时间相同，则a、b一定相同的物理量是A．荷质比 B．入射速度C．入射动能 D．入射动量15．如图，轻绳的一端系在固定光滑斜面上的O点，另一端系一小球。

给小球一个初速度使它在斜面上做完整的圆周运动，a、b分别为最低点和最高点，则小球A．重力的瞬时功率始终为零B．所受的向心力大小不变C．在b点的速度不可能为零D．在a点所受轻绳拉力一定大于小球重力16．小球在光滑水平面上以速度v0做匀速直线运动。

某时刻开始小球受到水平恒力F的作用，速度先减小后增大，最小速度v的大小为0.5v0，则小球A．可能做圆周运动 B．速度变化越来越快C．初速度v0与F的夹角为60° D．速度最小时，v与F垂直17．如图，同一平面有两根互相平行的长直导线M和N，通有等大反向的电流，该平面的a、b两点关于导线N对称，且a点与两导线的距离相等。

若a点的磁感应强度大小为B，则下列关于b 点磁感应强度B b 的判断正确的是A ．B B 2b >，方向垂直该平面向里 B ．B B 21b <，方向垂直该平面向外 C ．B B B <<b 21，方向垂直该平面向里D ．B B B 2b <<，方向垂直该平面向外 18．氢原子第n 能级的能量为21nE E n =（n ＝1，2，3，……），其中E 1是基态能量。

若氢原子从第k 能级跃迁到第p 能级，辐射的能量为1536E -，第p 能级比基态能量高134E -，则A ．k =3，p =2B ．k =4，p =3C ．k =5，p =3D ．k =6，p =219．如图a ，用力传感器研究橡皮绳中拉力随时间的变化。

2018年广州市普通高中毕业班综合测试（二）英语第I卷第二部分阅读理解（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，从每题所给的四个选项（A、B、C和D）中，选出最佳选项，并在答题卡上将该项涂黑。

AThe best of adventure and sport in NSW If you want adventure, then the state of New SouthWales (NSW) in Australia is the placeto go. No matterwhat the season, you can choose from awide variety oflandscapes, climates, activities and experiences all witheasy access to tour operators and local guides.For snow lovers, there’s no better place than theSnowy Mountains. Skiers and snowboarders can hit the slopes for some downhill thrills in Kosciuszko National. Park. Non-skiing adventure-seekers will enjoy hiking or snowshoeing.If water sports are more your thing, there are plenty ofplaces to go. Surfers you’re your surfboard s and head to Byron Bay, Shellharbour, or Newcastle's Merewether Beach. To see spectacular sea life up close, visit Lord Howe Island, a world-famous destination for underwater diving.The oceans, lakes and rivers around NSW offer a lifetime’s worth of exci ting fishing and boating challenges. Want more? Experience the rush of whitewater rafting in Jindabyne and Penrith, or go barefoot waterskiing in Port Stephens.For adventure in NSW, the sky’s the limit! Book a hot-air-balloon or helicopter ride over the stunning vineyards of the Hunter Valley, go skydiving in Wollongong, or try hang-gliding in Stanwell Park.Get to know the State’s unique and tough landscapes on a caving, canoeing or rock climbing adventure. Four-wheel-driving and off-roading tours are popular in both Country NSW and Outback NSW. Or explore parts of the State on horseback ― you’Il find great horse riding options in Sydney and throughout NSW.21. What is the purpose of this article?A. To advertise a new holiday tour.B. To describe the geography of NSW.C. To promote NSW's tourist attractions.D. To encourage people to move to NSW.22. Where can you go barefoot waterskiing?A. Port Stephens.B. The HunterValleyC. Stanwell Park.D. Wollongong.23. Who are the intended readers？A. Families.B. Local guides.C. Photographers.D. Adventure travellersBThe United States of America was founded in 1776 after the 13 independent American states rose up against the ruling British, defeated them in the American Revolutionary War, and signed the Declaration of Independence, the document which declared the creation of the new country.The men who led the revolution, drafted the Declaration of Independence, and wrote the first American laws are known as " founding fathers". Benjamin Franklin, whose picture is on the US 100-dollar note, was appointed to prepare the Declaration that was eventually signed by the other founding fathers.Franklin was born in 1706 in Boston to a soap maker named Josiah Franklin. His father could not afford full schooling for all his children, but Benjamin loved books and worked in his elder brother's printing business before starting a newspaper called the Pennsylvania Gazette in 1729. He wrote and drew cartoons for the newspaper. In addition, he worked to improve living conditions in the city: introducing street lights, cleaning the roads and building libraries. In the 1740s, Franklin retired from his newspaper and turned to science with great success. He was a very smart man and his work on electricity, including the “kite experiment” which confirmed the nature of lightning, made him famous throughout the world.Franklin earned the title of the “First American” for his efforts to unite the 13 American states, and to win their independence. This part of the story starts in London. He was sent to the city to persuade the British to treat the American states more fairly. It was here that he began interacting with important political thinkers and activists of the time and developing his own political ideas.Following his return to America in 1761 he became much more active in American politics and in the battle againstBritish rule.After the United States of America was established, Franklin held several important positions such as the first United States Postmaster General, Ambassador to France and President of Pennsylvania. He is also famous today for his wise sayings, including “a penny saved is a penny earned” and “an ounce of pr evention is worth a pound of cure”.24. What is the article mainly about?A. The American Declaration of Independence.B. Franklin's contributions to American society.C. The American War of Independence.D. Benjamin Franklin's early life.25. How did Franklin begin developing his own political thinking?A. By discussing ideas with political activists in Britain.B. By persuading the 13 American states to unite.C. By fighting against British rule in America.D. By writing articles for his own newspaper.26. What can be inferred about Franklin from the article?A. His most important contribution was in science.B. He was th e leader of the “founding fathers”.C. He was successful in many different areas.D. He came from a very wealthy family.27. What is the correct order for the following events from Franklin’s life?a. He started a newspaper business.b. He carried out the kite experience on electricity.c. He worked for his brother in a printing company.d. He was appointed the Ambassador to France.e. He helped write the Declaration of Independence.f. He visited England to discuss independence.A. e, c, a, b, f, dB. c, a, b, f, e, dC. a, c, f, b, d, eD. f, d, a, b, c, eCWhether or not you believe Professor Stephen Hawking's alarming theory that building a “strong” artificial intelligence (AI) could lead to the end of the human race, it’s clear that AI is reaching the point where soon it will affect almost every aspect of how we work with computers. We must get used to computers that talk back.Last year, investment bank Deep Ventures attracted much media attention when it announced that it hadappointed an AI computer to its board of directors to help make important business decisions. What actually happened was that the company used a program called VITAL to analyse potential investments (授资) in different businesses. But VITAL doesn't attend board meetings or vote ― it’s just a program. While it's not quite the evil robot we see in science fiction movies, it shows us how far computers and AI have advanced.Soon AI systems will be driving our vehicles, interpreting our facial expressions as we perform complex tasks, translating our voices into different languages and building other machines for us in factories around the world. But they won't look like us or pretend to be human.In the new film Ex Machina, a computer scientist is asked to assess whether a beautiful human-looking robot called Ava has human intelligence. I won't spoil the film for you, but it occurred to me that one of the reasons we believe other human beings are conscious and have intelligence is that we’re told they are all .the time. Indeed, if you stopped believing other people have minds, you would quickly find yourself unable to function in the world.Google’s Eric Schmidt argues that we shouldn't worryabout AI, and that we need instead to redesign our education systems so that we learn how to get on with the machines. As powerful computer-based intelligences continue developing, we must let go of the belief that only humans have intelligence and consciousness. Just as we have accepted the reality that the self-awareness that makes minds possible exists within the animal world, we may soon accept that it can also exist within the machine world.28. According to Professor Stephen Hawking, human beings .A. may be endangered by strong AIB. are still more intelligent than machinesC. will benefit greatly from the advances in AID. will never be able to build a strong AI system29. According to Paragraph 2, VITAL can .A. attend board meetings to voteB. make final decisions for the bankC. attract more investments to the bankD. assess the value of different businesses30. The author predicts that AI machines will soon be able to .A. control people's facial expressionsB. construct other intelligent machinesC. have a human-like physical appearanceD. change people's speeches into different languages31. Which of the following would the author most probably agree with?A. It is too late to stop the danger of artificial intelligence. . .B. Humans should learn to live with intelligent machines.C. Intelligent machines will eventually control the world.D. Only humans can have intelligence and consciousness.DMature-age university students are annoying, I know. I understand that when you're 18 or 19, and already know everything, there's no need to do the readings or show up prepared for class. I also understand that there are these old people in class who should be doing other things — maybe retiring, or gardening in the backyard. They are eagerly asking questions (or worse, answering them) and generallyloud.I understand because I used to be one of them. I dropped out of high school in Year 11 and after playing guitar in a band for a few years, I spent the next ten years working different jobs. Then a friend, who thought I was wasting my life, suggested I enrol at his university. Although afraid, I eventually took a university preparation course and a year later became a 35-year-old university freshman.Like many mature-age students, after completing my degree, I continued studying and eventually attained my PhD.Now I’m a lecturer at Toronto University in Canada. In fact, I have just finished preparing a group of mature-age students to annoy next year’s young first years. My students come from many different backgrounds. But they all share an enthusiasm for knowledge and learning.I know they are ridiculous and show up to class with folders full of readings, minds overflowing with ideas and concepts they want to discuss. I was the same. But, contrary to the stereotype of the annoying mature-age students occupying the airtime in class, most don't want to control the discussion.They’re likely to be waiting, counting away the seconds silently in the hope that someone will want to talk about all of these amazing ideas we’re learning about. Only after waiting for younger voices to speak. ( but which often remain silent) do they begin talking.Speaking for myself, I love students who come prepared and ready to discuss stuff. So let's celebrate all of those “annoying”mature-age students.32. According to the article, a mature-age student is a person .A. who behaves like an adult B . studying for a higher degreeC. not yet qualified to enter universityD. who starts university at an older age33. In the first paragraph, the author .A. shows that he is opposed to mature-age studentsB. describes the problems mature-age students createC. makes fun of the attitude held by many young students.D. explains why many teachers dislike mature-age students34. What does the underlined word “them” in Paragraph 2refer to?A. Retired people.B. Early high school leavers.C. Mature-age university students.D. University students aged below 20.35. Why do mature-age students often wait before speaking in class?A. They are not very familiar with the topic being discussed.B. They want to give the younger 'students more chances to speak.C. They lack the ability to give their opinions.D. They are more interested in hearing others' opinions.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。

试卷类型：A2018年广州市普通高中毕业班综合测试（二）物 理注意事项：1．答卷前，考生务必用黑色字迹钢笔或签字笔将自己的姓名和考生号填写在答题卡上。

用2B 铅笔将答题卡上试卷类型（A ）涂黑。

在答题卡右上角的“试室号”栏填写本科目试室号，在“座位号列表”内填写座位号，并用2B 铅笔将相应的信息点涂黑。

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，再选涂其它答案，答案不能答在试卷上。

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各题目指定区域内的相应位置上；如需改动，先划掉原来的答案，然后再写上新的答案；不准使用铅笔和涂改液。

不按以上要求作答的答案无效。

4．考生必须保持答题卡的整洁，考试结束后，将试卷和答题卡一并交回。

第一部分 选择题（共 40 分）一、本题共 10 小题；每小题 4 分，共 40 分．在每小题给出的四个选项中，有的小题只有一个正确选项，有的小题有多个正确选项．全部选对的得 4 分，选不全的得 2 分，有选错或不答的得0 分．1．关于热力学第二定律，下列说法正确的是A ．自然界中进行的涉及热现象的宏观过程都具有方向性B ．有可能使热量由低温物体传递到高温物体而不引起其他变化C ．机械能可以全部转化为内能D ．可能从单一热源吸收热量并把它全部用来做功而不引起其他变化2．把甲图中的小球举高到绳子的悬点O 处，然后释放，让小球自由下落，利用传感器和计算机测量绳子快速变化的拉力的瞬时值，乙图为绳子拉力 F 随时间 t 变化的图线，由此图线所提供的信息，可以确定 A . t 2时刻小球速度最大B . t 1～t 2期间小球速度先增大后减小C ．t 3时刻小球动能最小D . t 1和t 4时刻小球动能相等3．设氢原子从基态向 n = 2 能级跃迁时，吸收的光子波长为λ1；从 n ＝2 能级向 n ＝3 能级跃迁，吸收的光子波长为λ2；氢原子从 n ＝3 能级向低能级跃迁时，所辐射光子的波长可能为A ．λ1 B ．λ2， C ．λ1＋λ2D λ1λ2λ1＋λ24．水平固定放置的足够长的 U 形金属导轨处于竖直向上的匀强磁场中，在导轨上放着金属棒 ab ，开始时 ab 棒以水平初速度v 0向右运动，最后静止在导轨上，就导轨光滑和粗糙两种情况比较，这个过程A ．安培力对 ab 棒所做的功相等B．电流所做的功相等C．产生的总热量相等D．ab 棒的动量改变量相等5．分别测量两个电池的路端电压和电流，得到如图所示的a、b两条U－I图线，比较两图线，可得出结论A . a 电池的电动势较小、内阻较大B . a 电池的电动势较大、内阻较大C . b 电池的电动势较大、内阻较小D . b 电池的电动势较小、内阻较大6 ．用一定光强的绿光照射某金属表面，发生光电效应A．若使绿光光强减弱，光电子的最大初动能不变B．若使绿光光强减弱，单位时间内产生的光电子数减少C．改用光强相同的蓝光照射该金属表面，不一定发生光电效应D．改用光强相同的红光照射该金属表面，一定能发生光电效应7．两条等长的细线各悬挂一个重球，两球的直径相同，平衡时两球刚好接触，如图所示，以m a、m b分别表示 a 、b 球的质量，将a 球在两线所在平面内向左拉开很小角度后释放，碰撞后，两球弹开，则A．如果m a＝1.1m b，下一次碰撞将发生在平衡位置右侧B．如果m a＝0.9m b，下一次碰撞将发生在平衡位里左侧C．无论是m a＝1.1m b，还是m a＝0.9m b．下一次碰撞都不可能发生在平衡位置右侧D．无论是m a＝1.1m b，还是m a＝0.9m b．下一次碰撞都不可能发生在平衡位置左侧8．夏天，如果自行车内胎充气过足，又在阳光下曝晒（曝晒过程中内胎容积几乎不变）, 车胎容易爆炸．关于这一现象，以下说法正确的是A．车胎爆炸，是车胎内气体温度升高，气体分子间斥力急剧增大的结果B．在爆炸前的过程中，气体温度升高，分子无规则热运动加剧，气体压强增大C．在爆炸前的过程中，气体吸热，内能增加D．在车胎爆炸过程中，气体内能不变9．如图所示，a 与b 是两束平行的颜色不同的单色光，它们从空气中射入水中的折射角分别为r a、r b，若r a>r b，则A．在空气中，a的波长大于b 的波长B．在空气中，a的波长小于b 的波长C．a在空气中的频率大于其在水中的频率D．若从水射向空气，a 光的临界角小于b 光的临界角10 ．测声室内的地面、天花板和四周墙壁表面都贴上了吸音板，它们不会反射声波，在相距6m 的两侧墙壁上各安装了一个扬声器a 和 b ，俯视如图，两扬声器的振动位移大小、方向完全相同，频率为170Hz ．一个与示波器Y 输入相连的麦克风从a 点开始沿 a 、b 两点连线缓缓向右运动，已知空气中声波的波速为340m/sA．麦克风运动到距离a 点1. 5m 处时示波器荧屏上的波形为一直线B．麦克风运动过程中除在a、b 两点外，示波器荧屏有5 次出现波形最大C．麦克风运动过程中示波器荧屏显示的波形幅度是不变的D．如果麦克风运动到a、b 连线的中点停下来之后，麦克风中的振动膜将始终处于位移最大处第二部分 非选择题(共 110 分）二．本题共 8 小题，共 110 分．解答题应写出必要的文字说明、方程式和重要演算步骤，只写出最后答案的不能得分．有数值计算的题，答案中必须明确写出数值和单位． 11． ( 8 分）从高空下落的雨点打在人身上并不可怕，说明其速度不会很大；一位同学猜想这可能是由于运动物体受空气阻力的大小与其速度有关，于是定下了“在其他条件相同的情况下，运动物体所受空气阻力与运动速度关系”的研究课题，实验设计方案和实验过程如下．实验器材：一个顶部有一个小孔的薄壳塑料球、胶泥、天平、超声测距测速仪等． 实验方法：用超声测距测速仪等仪器测量小孔向上的塑料球空中竖直下落时的下落距离、速度随时间变化的规律． 实验步骤：A ．用天平测量空球的质量m ，B ．测量球在空中下落过程中不同时刻的下落位移，将数据填入表格中，如右表所示；C ．用天平称出与空球质量相等的三份胶泥，每次把一份胶泥从小孔填入球中，使球的总质量分别为 m 2=2m ，m 3=3m 、m 4=4m ；每填入一份胶泥后，让球从空中下落，记录下落过程中不同时刻的速度，由此得到总质量不同时球下落的 4 组速度－时间图线如坐标图所示：图线 ① 为总质量为 m 时的图线， ② 、 ③ 、 ④ 分别是总质量为m 2、m 3、m 4时的图线．对实验数据进行分析、归纳后，得出结论．请你为他回答下列问题：( l ）表格中 x 处的数值为_________．( 2 ）各条图线的共同特点是：在下落的开始阶段做________运动，最后做_________运动．( 3 ）比较图线 ① 和 ④ 在 1 . 0 ~1 . 5 s 时间段内，两者速度随时间变化关系的差异是_________．( 4 ）从图线可大致得出空气阻力 f 与速度大小的函数关系为f=_________。

2018年广州二模理科数学试题(含详细答案)2018年广州市普通高中毕业班综合测试（二）理科数学试卷，共5页，23小题，满分150分，考试用时120分钟。

注意事项：1.在答题卡上填写姓名、考生号、试室号和座位号，并用2B铅笔填涂考生号。

2.选择题用2B铅笔在答题卡上填涂，填涂错误需用橡皮擦干净。

3.填空题和解答题必须使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，不得使用铅笔和涂改液。

4.必须保持答题卡整洁，考试结束后将试卷和答题卡一并交回。

一、选择题：共12小题，每小题5分，共60分。

1.已知z1=1+2i，z2=1-i，则z1z2=6.2.已知集合M={x|x≤2,x∈Z}，N={x|x-2x-3<0}，则M=[-1,2]。

3.执行如图所示的程序框图，若输出y=3，则输入x的值为2.4.已知C: (x^2/a^2)-(y^2/b^2)=1(a>0,b>0)的渐近线与圆(x-2)^2+y^2=1相切，则C的渐近线方程为y=±(x/3)。

5.根据图表，结论B“2010年以来我国实际利用外资规模逐年增加”是正确的。

6.已知cos(α)+cos(β)=1/2，sin(α)+sin(β)=√3/2，则α-β=π/3.7.已知椭圆C: (x^2/16)+(y^2/9)=1，点P(4,1)在C上，则点P关于x轴的对称点P'的坐标为(4,-1)。

二、填空题：共6小题，每小题5分，共30分。

8.已知函数f(x)=x^3+ax^2+bx+c，当x=1时，f(x)=0，f'(1)=0，f''(1)=2，则a=-3，b=3，c=-1.9.已知向量a=2i+j，b=i+2j，则|a-b|=√10.10.已知函数f(x)在区间[0,1]上具有二阶连续导数，且f(0)=f(1)=0，f''(x)+2f'(x)+f(x)=0，则f(x)=e^(-x)(x^2-2x)。

2018广州二模试卷（高清打印版）第一篇：2018广州二模试卷 (高清打印版)2018广州二模试卷(高清版)文综地理(一)一、选择题冰川学上的雪线是指降雪量与消融量达到平衡的界线。

天山乌鲁木齐河源1号冰川(西支)的上、下界高度分别为486米和3810米。

下图是四个时段冰川物质平衡分布统计图，据此完成1~3题。

1.5~8月该冰川雪线的波动范围是（）A.3819~3950米B.3950~4020米C.4020~4120米D.4120~4210米2.5~8月该冰川降雪量的分布特点是（）A.从3810~4486米递减B.从3950米向上、下递增C.从3950~4486米递减D.从4210米向上、下递减3.该冰川补给的最主要季节是()A.春季B.夏季C.秋季D.冬季2017年12月我国成功进行了开发干热岩资源实验。

干热岩是指埋藏于地下3~10千米，没有水或蒸汽，致密不渗透，温度在150℃以上的高温岩体。

它是一种新兴地热资源，可广泛用于发电、供暖等。

据此完成4~6题。

4.干热岩主要属于（）A.岩浆B.喷出岩C.沉积岩D.侵入岩5.我国干热岩最主要分布在（）A.东南沿海B.华北地区C.西北内陆D.青藏高原6.与传统地热资源相比，干热岩()A.开发难度小，成本低B.埋藏较浅，分布广C.无季节变化，污染少D.产业链短，效率低1946~1964年美国出生婴儿高达7600万人，这个群体被称为“婴儿潮一代”。

“婴儿潮一代”对美国的政治、经济、文化有着巨大的影响。

下图是1970年和2000年美国人口年龄金字塔统计图，据此完成7~8题。

7.引起“婴儿潮一代”人口高增长率的最主要原因是（）A.战后经济恢复和发展B.鼓励生育的人口政策C.实行宽松的移民政策D.新时期科学技术革命8.随着“婴儿潮一代”步入中年期，美国人口增长特点转变为（）A.快速增长B.负增长C.稳定增长D.零增长铁盖乡地处黄河上游龙羊峡地区，由于气候变化、超载放牧等原因，土地沙漠化率高达98.5%。