四川省绵阳南山中学2020届高三理综10月月考试题(PDF)

2024年10月绵阳南山中学集团学校高2022级10月联考物理试卷命题人：孔庆尹贾学明宋俊林本试卷分为试题卷和答题卷两部分，其中试题卷由第I 卷（选择题）和第Ⅱ卷组成，共6页；答题卷共2页．满分100分，时间75分钟．考试结束后将答题卡和答题卷一并交回．第Ⅰ卷(选择题，共46分)注意事项：1．答第I 卷前，考生务必将自己的姓名、准考证号、考试科目用铅笔涂写在答题卡上．2．每小题选出答案后，用铅笔把答题卡上对应题目的答案标号涂黑，如需改动，用橡皮擦擦干净后，再选涂其他答案，不能答在试题卷上．一、本题共10小题，共46分。

第1～7题，每小题4分，只有一项是符合题要求；第8～10题，每小题6分，有两个或两个以上选项符合题目要求，全都选对的得6分，选对但不全的得3分，有选错的得0分。

1．如图所示，吸附在竖直玻璃上质量为m 的擦窗工具，在竖直平面内受重力、拉力和摩擦力（图中未画出摩擦力）的共同作用做匀速直线运动。

若拉力大小与重力大小相等，方向水平向右，重力加速度为g ，则对擦窗工具受力情况的分析正确的是（）A ．擦窗工具受到3个力作用B ．擦窗工具受到4个力作用C ．摩擦力的方向可能与拉力方向相反D ．摩擦力大小等于2mg2．中国高铁的发展经历了从技术引进、消化吸收到自主创新、领跑全球的过程。

高铁的发展极大方便了人们的出行。

假设两高铁站P 和Q 间的铁路里程为216km 。

列车从P 站始发，直达终点站Q 。

设高铁列车的最高速度为324km/h 。

若高铁列车在进站和出站过程中，加速度大小均为0.5m/s 2，其余行驶时间内保持最高速度匀速运动。

则从P 到Q 乘高铁列车出行的时间为（）A ．37分钟B ．40分钟C ．43分钟D ．46分钟3．一小车沿直线运动，从t =0开始由某一速度做匀减速运动，当t =t 1时速度降为零，此后反向做匀加速运动直到t 2时刻。

在下列小车位移x 随时间t 变化的关系曲线中，可能正确的是（）A ．B ．C ．D ．4．如图甲所示，电梯配重可以平衡轿厢及其载荷的重量从而减少电机的工作负担，提高能效。

四川省2020届高三物理上学期10月联考试题考生注意：1.本试卷分选择题和非选择题两部分。

满分110分，考试时间90分钟。

2.答题前，考生务必用直径0.5毫米黑色，墨水签字笔将密封线内项目填写清楚。

3.考生作答时，请将答案答在答题卡上。

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；非选择题请用直径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．．．．．．．．．．．．．．．．．．．．．．．．．．．。

4.本卷命题范围：高考范围。

一、选择题：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，第1～6题只有一项符合题目要求，第7～10题有多项符合题目要求。

全部选对的得4分，选对但不全的得2分，有选错的得0分。

1.钴60(6027Co )在医学和生物育种等方面有广泛的应用。

钴60衰变成镍60的衰变方程为60602728Co Ni X γ→++，则下列说法正确的是A.X 粒子为中子B.衰变过程表明钴60原子核中有X 粒子C.X 粒子有很强的电离能力D.核反应中释放出的γ射线的穿透本领比X 粒子强2.如图所示为某质点做匀变速运动的s －t 图象，t ＝4s 时图象的切线交时间轴于t ＝2s 处，由此可知，，t ＝0时刻质点的速度大小为A.0B.0.25 m/sC.0.5 m/sD.1 m/s3.如图所示，半圆形金属环abc 固定在绝缘的水平面上，通有逆时针方向的恒定电流，长直导线MN 也固定在水平面上，与ac 边平行，通有从M 到N 的恒定电流，则下列说法正确的是A.长直导线受到的安培力水平向右B.金属环受到的安培力为零C.金属环受到的安培力水平向右D.ac边与长直导线相互排斥4.一个物块从斜面底端以大小为v0的初速度沿斜面向上滑，经过t时间又滑到斜面的底端，已知物块与斜面间动摩擦因数恒定，斜面足够长，若将初速度大小改为2v0，则物块在斜面上滑行的时间为A.32t B.2t C.323t D.4t5.如图所示，一颗卫星在近地轨道1上绕地球做圆周运动，轨道1的半径可近似等于地球半径，卫星运动到轨道1上A点时进行变轨，进入椭圆轨道2，远地点B离地面的距离为地球半径的2倍。

四川省绵阳南山中学2024届高三上学期10月月考英语试卷学校：___________姓名：___________班级：___________考号：___________一、阅读理解settle down with a new book, or use roving libraries to bring books to hard-to-reach populations. No matter how they achieve it, these novel libraries are keeping the magic of reading alive.Bishan Library (Singapore)Built in 2006, this library with skylights and trellises, is meant to invoke a modern glass treehouse. Glass pods of varying colors stick out of the building randomly to create cozy yet airy corners for reading throughout the building. At the same time, a more open-plan children's room on the basement level invites interaction while preventing noise from filtering upward and disturbing those concentrating in the lofty perches above.Stuttgart City Library (Stuttgart, Germany)Opened in 2011, this nine–story public library is characterized by its attractive white color scheme (lit by blue light at night), its bold cubic shape. This cultural center for the city, designed to feel open and full of light, can be entered from any of its four sides, and people can borrow artwork as well as books.The Camel Library Service (North Eastern Province, Kenya)To combat low literacy rates in the desert of Kenya, the government created a roaming library composed of nine camels bringing books to villages. The library travels four days a week serving the region's nomadic people. With more funding, they plan to increase their reach both in distance and the books they carry.Macquarie University Library (Sydney, Australia)A wonderful combination of cutting-edge and sustainable ideas, this building was made from recycled materials, features a green roof, and was designed to look like the shape of a eucalyptus tree. It is also state of the art, using robot cranes to bring requested books to the front desk.1、Which of the following can offer the service of lending artwork?A.Stuttgart City Library.B. Bishan Library.C. The Camel Library Service.D. Macquarie University Library.2、What can we know about the Macquarie University Library?A. It is like a modern glass treehouse with skylights.B. It has a green roof and a eucalyptus tree outside.C. It is intelligent and environmentally-friendly.D. It opens four days a week serving the local people.3、According to the passage, the four libraries are all designed to _____.A. prevent noiseB. encourage readingC. recycle old booksD.present beautiful appearancesWhen the designer and typographer (排印工) Marcin Wichary chanced upon a tiny museum just outside Barcelona five years ago, the experience tipped his interest in the history of technology into an obsession with a very particular part of it: the keyboard.“I have never seen so many typewriters under one roof. Not even close,” he shared on the Internet at the time. “At this point, I literally have tears in my eyes. I’m not kidding. This feels like a miracle.”He’d had a discovery while wandering through the exhibit: Each key on a keyboard has its own stories. And these stories are not just about computing technology, but also about the people who designed, used, or otherwise interacted with the keyboards.Take the backspace key for example, he explains, “I like that the concept of backspace was originally just that — a space going backward. We are used to it erasing now, but for a hundred years, erasing was its own incredibly complex effort. You needed to master a Comet eraser, or Wite-Out, or strange correction tapes, and possibly all of the above… or give up and start f rom scratch whenever you made a small mistake in typing.”The deeper he researched, the more obsessive he became. Amazed that no comprehensive books existed on the history of keyboards, he decided to create his own. When not working at his day job as the design leader for the design software company Figma, he began producing Shift Happens, a two-volume, 1,216-page hardcover book — and raised over $750,000 for the project on Kickstarter in March of 2023. Wichary was only a bit surprised by the support and th e keyboard’s wide appeal. As he points out. “It’s such a crucial device that occupies a lot of our waking life.”4、Which is the closest understanding of the underlined phrase tipped his interest ________.A.made him lose his interestB. weakened his interestC. publicized his interestD. changed his interest5、What did Wichary discover while admiring the keyboards?A.The wisdom of human.B. The stories behind them.C. The secret of the keyboards.D. The history of technology.6、What does Wichary want to tell us about the backspace key in Paragraph 4?A.It is the outcome of long-term improvement.B.It can be used to move back one space.C.It is a rather simple but powerful key.D.It permits people to make mistakes when typing.7、Why did Wichary write his own book?A. To make money.B. To record history.C. To fill a gap.D. To become a celebrity.Cultivated meat, also known as lab-grown meat, has been cleared for sale in the US.Actually，Lab-grown meat is made by feeding a mix of nutrients to animal cells in steel tanks in labs. The idea is to create an alternative to agriculturally raised meat. And unlike other meat substitutes which are made from plant proteins and other ingredients, lab-grown meat is real meat.Upside Foods and Good Meat, two companie s that make “cultivated chicken”, said that they have gotten approval from the US Department of Agriculture (USDA) to start producing their cell-based proteins. Good Meat said that production is starting immediately. Cultivated meat is grown in a giant vat (缸), much like what you’d find at a beer factory.Last week both companies revealed that the USDA approved labels for their products. In March, Good Meat received a “no questions” letter from the FDA, confirming the product’s safety for sale in the US. Upside Foods also received one in November. Both the USDA and the FDA are overseeing the growing cultivated meat market. CEO of Good Meat, Josh Tetrick, described the approval as a major milestone for the company, the industry, and the food system. Upside founder Uma Valeti called the approval “a giant step forward towards a more sustainable future”.Good Meat, which has been selling its products in Singapore, advertises its product as “meat without slaughter (屠宰)”, a more humane approach to eating meat. Supporters hope that cultivated meat will help fight climate change by reducing the need for traditional animal agriculture, which emits greenhouse gases. The company previously announced a partnership with chef José Andrés to introduce the product to a Washington DC restaurant, although the launch time remains uncertain. As production increases, Good Meat may explore cooperation with other restaurants or supermarkets.Upside is planning to introduce its product at Bar Crenn, a San Francisco restaurant, but did not share a launch date yet. Selling at Bar Crenn should help Upside learn more about how chefs and diners feel about the product. Eventually, the company plans to work with other restaurants and make its products available in supermarkets. For now, it is holding a contest to allow curious customers to be among the first to try the product.8、What do Upside Foods and Good Meat have in common?A.Both have partnerships with international chefs.B.Both are involved in producing lab-grown meat.C.Both declared a launch date of their cultivated meat.D.Both received FDA approval for worldwide distribution.9、What is the potential benefit of cultivated meat?A.Higher safety for eating.B.Lower costs for restaurants.C.Improvements in traditional animal agriculture.D.Positive impacts on climate change.10、What can be inferred from the last paragraph?A.Diners have access to free products from Upside.B.Curious customers will become the main force of buying.C.Upside will evaluate the responses of chefs and diners to its product.D.Upside will conduct a survey among diners about their paying ability.11、What is the text mainly about?A.The benefits of cultivated meat.B.The research on cultivated meat.C.The history and processing of cultivated meat.D.The approval and prospect of cultivated meat.Consider the possibility that all human technology started with a mistake — or at least a lack of hand-eye coordination. In a new study published on Friday in Science Advances, Lydia Luncz and Tomos Proffitt, both at the Max Planck Institute for Evolutionary Anthropology in Leipzig, Germany, argue that mistakenly created flakes (薄片) may have been our ancient ancestors’or other now-extinct early human relatives “first step toward creating the sharp-edged tools that they used to butcher animals and cut edible plants.To do their research, Luncz and Proffitt traveled to an abandoned oil palm plantation near Thailand’s Phang Nga Bay and collected more than 1, 100 pieces of nut-cracking stonesused by a troop of long-tailed macaques (猕猴). Macaques crack open oil palm nuts by placing them on a flat stone and striking their shell with another stone. These monkeys often miss the nut and accidentally break the stones, producing sharp flakes. Luncz and Proffitt analyzed these stones, which revealed a surprising fact: The flakes that the macaques unintentionally produced looked a lot like the oldest stone tools that were intentionally made by hominins (古人类).Macaques don’t use the sharp flakes they create for anything, Luncz ad ds, noting that the monkeys have sharp teeth and don’t need cutting tools. The similar ancient stone tools collected from some of the earliest known sites, however, show evidence of being used for cutting tasks. For example, in Oldowan, a site dating between 3.3 million and 1.5 million years ago, researchers analyzed use-wear patterns on the tools and found that some of the flakes showed damage along their edges, indicating that they had been used for cutting. Cut marks on some fossils revealed that hominins had used stone tools for butchering the animals, making it clear that the sharp stone tools were anything but unintentional by-products of other pounding activities.Despite the findings, to reveal the mechanism for the emergence of flake technology, researchers still need to learn how hominins made the leap from accidentally producing sharp flakes to picking them up and using them. Luncz and Proffitt hope to find the missing link in further studies.12、What can we learn from paragraph 2?A.The flakes pro duced by macaques were similar to hominins’ stone tools.B.Long-tailed macaques used the flakes to crack open oil palm nuts.C.Macaques deliberately produced flakes for cutting by breaking stones.D.The two researchers went to Thailand and collected 1, 100 flakes.13、Why does the author mention the Oldowan site in paragraph 3?A. To clarify a complex concept.B. To provide specific proof.C.To present an interesting fact.D. To make a detailed comparison.14、What will Luncz and Proffitt probably focus on in their future study?A. Why macaques create flakes.B. Why hominins used stone tools.C. How hominins began using flakes.D. How macaques cut food with flakes.15、What is the best title of the passage?A.Flake technology: from macaques to hominins.B.A mistake: the origin of human technology.C.Pounding activities: on human evolutionary course.D.A missing link: long-tailed macaques create flakes.delay sleep in response to stress or a lack of free time earlier in the day. The addition of the word “revenge”, by the Chinese, to the concept of bedtime procrastination became popular on social media. ①_______ Both language versions reflect frustration tied to long, stressful work hours that left little time for personal enjoyment.People who engage in bedtime procrastination know and generally want to receive enough sleep. ②_______ This is known as an intention-behavior gap.Bedtime procrastination can cause sleep deprivation (缺乏). ③_______ Not getting enough sleep affects thinking, memory, and decision-making. Sleep deprivation also raises the risk of daytime sleepiness, which can harm productivity and academic achievement while increasing the risks of sleeping driving.④_______ It causes difficulties in regulating emotions. It’s also been connected to mental health disorders, such as depression and anxiety. It is also discovered that sleep deprivation worsens physical health, making people more easily to suffer from illnesses. Ongoing sleep loss consequences can build up over time. ⑤_______The best solution for bedtime procrastination is creating good sleep patterns and a good sleeping environment. But remember that it will take more than one night to truly get into good sleep habits.A.The Chinese are noted for working long hours.B.But they fail to actually do so.C.A lack of sleep is tied to mental and physical health.D.Therefore, it contributes to significant long-term health problems.E.The English term “revenge bedtime procrastination” appeared from a translation of this expression.F.Without enough hours of sleep, the mind and body can’t properly recharge.G.We struggle to stay productive during the day to make up for the loss.三、完形填空（20空）sing along. My manager had just told me that, in spite of my excellent performance, hewhere they came from.解决者), rather than the project leader I desired to be.willing to work hard. You’ll make it.”manager’s lack of confidence in me. A few sleepless nights later, I decided that taking a17、A. ability B. recommendation C. sense D. mood18、A. responsibilities B. priorities C. experiences D. rewards19、A. amazed B. reached C. hit D. push20、A. plan B. change C. result D. proposal21、A. self-pity B. self-discipline C. self-confidence D. self-doubt22、A. unsuccessful B. efficient C. honest D. outgoing23、A. fallen behind B. taken off C. come to an end D. started out24、A. shocked B. puzzled C. driven D. controlled25、A. end B. quit C. ruin D. advance26、A. delighted B. reliable C. eager D. vain27、A. complaints B. advantages C. assignments D. opportunities28、A. property B. procedure C. expectation D. determination29、A. randomly B. patiently C. carelessly D. casually30、A. welcome B. willing C. depressed D. naughty31、A. something B. everything C. nothing D. anything32、A. promotion B. fame C. solution D. recognition33、A. unusual B. good C. true D. unknown34、A. career B. passion C. partner D. facility35、A. forced B. easy C. merciful D. focusedremembered after a long period of time. This year marked the 1,000th anniversary of Wang’s birthday. To celebrate the occasion, China Post ①________（issue）a collection of stamps in December 2021.When he was young, Wang became familiar ②________ the hardships of the peasants. After he passed the imperial civil service exams and became ③________ official, Wang wanted to change their conditions and initiated a series of reforms.He implemented new laws ④________ (ease) farmers’ burdens, loaned grain to farmers and allowed them to repay their debts after the autumn harvest. He attached great importance to ⑤（train）talents in different fields, for example, in laws. ⑥________(lucky), these policies harmed the interests of the upper classes and his reforms eventually failed.Wang’s ⑦________(brave) to innovate has inspired many people. The former Chinese Premier Wen Jiabao quoted Wang in his speech: A true reformer should fear neither strange astronomical ⑧________（phenomenon）nor comments.During his lifetime, Wang ⑨_______（pen）more than 1, 000 poems. Often short and plainspoken, these poems contain profound topics, ⑩__________won him wide acclaim（称赞）both at home and abroad.文中共有10处语言错误，每句中最多有两处。

2024年10月绵阳南山中学高2024级高一上期10月月考试题物理第I卷（选择题，共48分）一、本题共8小题，每小题4分，共32分。

在每小题给出的四个选项中，只有一项符合题目要求。

1.用高速摄影机拍摄的四张照片如图所示，下列说法正确的是（）A.研究甲图中猫在地板上行走的速度时，猫可视为质点B.研究乙图中水珠形状形成的原因时，旋转球可视为质点C.研究丙图中飞翔鸟儿能否停在树桩上时，鸟儿可视为质点D.研究丁图中马术运动员和马能否跨越障碍物时，马可视为质点2．据说，当年牛顿躺在树下被一个从树上掉下的苹果砸中，从而激发灵感发现了万有引力定律。

若苹果以4m/s的速度砸中牛顿头部，不计空气阻力，取重力加速度大小g=10m/s2，则该苹果下落前距牛顿头部的高度为（）A．0.4m B．1.6m C．0.8m D．3.2m3.最近某学校附近发生了一起交通事故，一辆面包车将路边骑自行车的人撞飞十几米，造成严重后果．经交警支队现场勘察，测得面包车刹车痕迹长50m．假设制动时加速度大小为4m/s2.则关于该汽车的运动，下列判断中正确的是（）A．初速度为40m/s B．刹车后6s内位移为48mC．刹车后3s末的速度是8m/s D．刹车后最后一秒内的位移是4m4.一物体做初速度为零的匀加速直线运动，图甲、乙、丙、丁是以时间为横轴的运动图象。

则关于此物体的运动图象，下列说法正确的是（）A．图甲可能是速度随时间变化的图象B．图乙可能是位移随时间变化的图象C．图丙可能是速度随时间变化的图象D．图丁可能是加速度随时间变化的图象5.如图，在平直路面上进行汽车刹车性能测试。

当汽车速度为v0时开始刹车，先后经过路面和冰面（结冰路面），最终停在冰面上。

刹车过程中，汽车在路面与在冰面所受加速度大小之比为7∶1，位移之比为8∶7。

则汽车进入冰面瞬间的速度为（）A．B ．C ．D ．6、观察图中的烟和小旗，关于甲、乙两车相对于房子的运动情况，则（）A ．甲乙两车一定向左运动B ．甲车可能静止，乙车一定向左运动C ．甲车可能运动，乙车向右运动D ．甲车可能向左运动，乙车一定向左运动且V 甲大于V 乙7.用同一张底片对着小球运动的路程每隔0.15s 拍一次照，得到的照片如图所示，则小球在图示这段距离内运动的平均速度约是（）A ．0.25m/sB ．0.2m/sC ．0.11m/sD ．无法确定8.一辆汽车在平直的水平路面上行驶，遇到紧急情况刹车的过程视为匀减速过程，若已知汽车在第2秒内通过的位移为16米，在第3秒内通过的位移为2米，则下列说法中正确的是（）A 第2秒内的平均速度为8m/sB.前2秒内的平均速度为16m/sC.加速度大小为8m/s 2D ．加速度大小为16m/s 2二、本题共4小题，每小题4分，共16分。

2020-2021学年四川省高三10月月考物理卷（解析版）姓名:_____________ 年级:____________ 学号:______________题型选择题填空题解答题判断题计算题附加题总分得分1. （知识点：机械能守恒,匀变速直线运动基本公式应用,对单物体(质点)的应用,向心力公式）如图所示，一质量m=1kg的小物块(可视为质点)从A点以大小v0=4m/s的初速度沿切线进入光滑圆轨道AB，经圆弧轨道后滑上与B点等高、静止在粗糙水平面的长木板上，圆弧轨道B端切线水平。

已知长木板的质量M=1kg，A、B两点的竖直高度为h=1.0m，AO与BO之间夹角θ=37O，小物块与长木板之间的动摩擦因数μ1=0.5，长木板与地面间的动摩擦因数μ2=0.2，sin37O=0.6，cos37O=0.8。

求：（1）小物块运动至B点时的速度v1大小；（2）小物块滑动至B点瞬时，对圆弧轨道B点的压力；（3）长木板至少为多长，才能保证小物块不滑出长木板？（4）小物块从滑上长木板起到停止运动所经历的时间【答案】（1）（2）17.2N，方向竖直向下（3）（4）【解析】试题分析：（1）小物块沿圆弧轨道从A点到B点应用动能定理：（1分）故：（1分）设在B点圆轨道对小物块支持力大小为F，则有：（1分）由数学关系有：（1分）故：（1分）评卷人得分由牛顿第三定律可知，小物块对圆轨道的压力大小为17.2N，方向竖直向下（1分）（3）小物块在木板上先减速，木板加速，直到获得共同速度，然后一起减速至0。

设获得共同速度之前运动时间为t1，物块和木板加速度大小分别为a1、a2，各自运动距离为、。

对物块：（1分）（1分）（1分）对木板：（1分）（1分）（1分）木板最小长度（1分）综合以上各式：；（1分）（4）设获得共同速度后一起减速的加速度为a，减速时间为，则，解得物体从滑上木板起直到停止运动所用时间考点：考查了牛顿第二定律与运动学公式的综合应用如图所示，倾角为30°的光滑斜面与粗糙的水平面平滑连接．现将一滑块(可视为质点)从斜面上的A点由静止释放，最终停在水平面上的C点．已知A点距水平面的高度h＝0.8 m，B点距C点的距离L＝2.0 m．(滑块经过B点时没有能量损失)，求：（1）滑块在运动过程中的最大速度；（2）滑块与水平面间的动摩擦因数μ；（3）滑块从A点释放后，经过时间t＝1.0 s时速度的大小．【答案】（1）（2）0.4（3）3.2m/s【解析】试题分析：（1）滑块先在斜面上做匀加速运动，然后在水平面上做匀减速运动，故滑块运动到B点时速度最大为，设滑块在斜面上运动的加速度大小为根据牛顿第二定律，有根据运动学公式，有解得：即滑块在运动过程中的最大速度为4m/s．（2）滑块在水平面上运动的加速度大小为，根据牛顿第二定律，有，根据运动学公式，有，解得：，即滑块与水平面间的动摩擦因数μ为0.4．（3）滑块在斜面上运动的时间为，根据运动学公式，有得由于故滑块已经经过B点，做匀减速运动，设t=1.0s时速度大小为v，根据运动学公式，有，解得：滑块从A点释放后，经过时间时速度的大小为3.2m/s．考点：考查了牛顿第二定律与运动学公式的综合应用如图为某工厂生产流水线上水平传输装置的俯视图，它由传送带和转盘组成。

绵阳南山中学2019年秋季高2017级10月月考物理答案14.A 15.B 16.B 17.D 18.C 19.AD 20.BD 21.BC22.(1)变大 (2)0.25 (3)不变23.(1)BD (2)2.4 0.50或0.51 (3)①如图所示（1分）②平衡摩擦力过度或木板一端垫得过高（每空2分）24.（12分）解：（1）由题意知小物体沿光滑轨道从C 到D 且恰能通过最高点，由牛顿运动定律和动能定理有：（2分）从D 到C 由动能定理可得（2分） 由牛顿第二定律可知（2分）F C =F ′C联解①②③④并代入数据得：F C =60N （2分） （2）对小物块从A 经B 到C 过程，由动能定理有：（2分） 联解①②⑥并代入数据得：μ=0.25 （2分）25.（20分）解：（1）木板开始运动时，设小物块和木板的加速度分别为a 1和a 2，则1111a m g m F =-μ （1分） 2221211)(a m g m m g m =++μμ （1分） 解得 a 1=3 m/s 2，a 2=7 m/ s 2 （2分）（2）设经过时间t 1木板向左运动最远，小物块和木板的位移分别为x 1和x 2，小物块的速度为v 1，则120t a =υ （1分）111t a =υ （1分）211121t a x = （1分） 22202x a =υ （1分） 解得 t 1=0.5 s ，v 1=1.5m/s ，x 1=0.375m ，x 2=0.875 m然后撤去F ，因为μ1m 1g >μ2(m 1+m 2)g ，所以木板向右做初速度为零的匀加速直线运动，小物块向右做初速度为v 1的匀减速直线运动。

设小物块和木板的加速度大小分别为a 3和a 4，经过时间t 2木板与小物块速度相同为v 2，位移分别为x 3和x 4，则。

四川省绵阳市南山中学2024-2025学年高三上学期10月月考英语试题一、听力选择题1．What will the speakers eat tonight?A．Italian food.B．Indian food.C．Chinese food.2．What does the man want to do?A．Take exercise every day.B．Become a member of the gym.C．Invite Janet to the gym after work.3．How many cups of ingredients will the woman need in total?A．Six cups.B．Five cups.C．Four cups.4．Where does the conversation most likely take place?A．At home.B．In the office.C．In a restaurant.5．What is the man’s suggestion?A．Arriving early.B．Sitting at the back.C．Booking tickets in advance.听下面一段对话，回答以下小题。

6．What are the speakers talking about?A．The advantages of healthy eating.B．The ways to keep a balanced diet.C．The risk of developing health issues.7．How can a diet rich in fruit, vegetables, and whole grains help according to the map?A．It can reduce depression.B．It can make us more intelligent.C．It can improve our concentration.听下面一段对话，回答以下小题。

四川绵阳南山中学2020届高三上10月化学考试题（解析版）一、选择题1. 下列现象或事实可用同一原理解释的是A. 浓硫酸和浓盐酸长期暴露在空气中浓度降低B. SO2和双氧水使酸性高锰酸钾溶液的紫色褪去C. 硫化钠溶液和水玻璃长期暴露在空气中变质D. 亚硫酸钠溶液和氯化铝溶液在空气中蒸干不能得到对应的溶质【答案】B【解析】试题分析：A．浓硫酸有吸水性，吸收水分使溶液的浓度降低，浓盐酸有挥发性，由于溶质挥发而使溶液的浓度降低，可见浓度降低的原因不同，错误；B．SO2和双氧水都是因为二者有还原性，被酸性高锰酸钾溶液氧化而使酸性高锰酸钾溶液的紫色褪去，原因相同，正确；C. 硫化钠溶液长期暴露在空气中，被空气中的氧气氧化产生S单质而变浑浊；水玻璃长期暴露在空气中变质，是由于硅酸的酸性比碳酸弱，会发生反应：CO2+H2O+Na2SiO3=Na2CO3+H2SiO3↓，可见变质原因不同，错误；D．亚硫酸钠有还原性，在空气中加热会被氧化变为硫酸钠，氯化铝是强酸弱碱盐，其溶液在空气中加热发生盐的水解反应，水解产生的氯化氢挥发，得到氢氧化铝，也不能得到对应的溶质，可见不能产生原物质的原因不相同，错误。

考点：考查物质发生变化的原因分析的正误判断的知识。

2.根据SO2通入不同溶液中实验现象，所得结论不正确的是A. AB. BC. CD. D【答案】C【解析】【详解】A、混合溶液中SO2被FeCl3氧化生成SO42−，再与BaCl2反应产生白色沉淀，体现了SO2的还原性，A正确；B、SO2与H2S在溶液发生反应SO2+2H2S=3S↓+2H2O，体现了SO2的氧化性，B正确；C、SO2使酸性KMnO4溶液褪色，这是SO2在酸性溶液中还原KMnO4生成Mn2+，体现了SO2的还原性，C错误；D、SO2与Na2SiO3溶液产生胶状沉淀，根据较强酸制较弱酸，可得结论酸性：H2SO3>H2SiO3，D正确。

答案选C。

3.有如下转化关系：＋―→＋＋H2O，则甲不可能是（）A. Na2O2B. CuC. FeD. Si【答案】D【解析】【分析】从转化关系：＋―→＋＋H2O中，我们很难推出甲是何种物质，所以我们采用逐项分析法。