重庆市第八中学2021届高三英语定时训练11

英语第Ⅰ卷（共95分）I. 听力测试。

（共30分）第一节（每小题1.5分，共9分）听一遍。

根据你所听到的对话和问题，从A、B、C三个选项中选出正确答案，并把答题卡上对应题目的答案标号涂黑。

1. A. I went to the mountains. B. I like drawing. C. Yes, I did.2. A. She likes playing football.B. She is a good doctor. C. She has short hair.3. A. Yes, I would. B. Yes. I do. C. No, thanks.4. A. I can do both. B. No, she can't. C. Yes, I can.5. A. It was raining. B. It was bad. C. I'd like it.6. A. That's all right. B. See you then. C. Thank you.第二节（每小题1.5分，共9分）听一遍。

根据你所听到的对话和问题，从A、B、C三个选项中选出正确答案，并把答题卡上对应题目的答案标号涂黑。

7. A. We can't take photos. B. We can't eat. C. We can't talk loudly.8. A. Twice a week. B. Once a week. C. Twice a month.9. A. Noodles. B. Dumplings. C. Noodles and dumplings.10. A. She has short hair. B. She wears glasses. C. She is short.11. A. The bank. B. The park. C. The library.12. A. Because it was rainy. B. Because he was tired. C. Because it was boring.第三节（每小题1.5分，共6分）听两遍。

关于高三英语一轮复习计划（18篇）关于高三英语一轮复习计划（精选18篇）关于高三英语一轮复习计划篇1一、指导思想我们以《高考英语考试说明》为依据，新课程标准为准绳，立足学校实际，转变教学观念，分层次教学，以学定教，以教促学，很抓基础。

降低难度，增加密度，教学生之所需。

强化自主、合作、学习，引导探究式学习。

夯实基础，培养能力。

努力打造有效课堂，争取高效课堂。

密切关注高考动态，积极收集有用的材料。

二、复习内容1、完成必修1-8的复习。

2、完成基础语法的复习。

三、具体备考措施1、本学期要完成高中英语5个模块的复习，在第一轮复习中，要帮助学生全面系统地掌握高中所学的英语基础知识，重点是词汇和语法的夯实。

夯实基础，使学生尽可能多的掌握更多的词汇。

2、抓好几个常态化在复习中，我们要把听力的练习常态化;定时训练常态化;集体备课常态化;3、降低教学起点，面向全体同学。

在教学中一定要根据学生的实际，根据不同层次的班级确立切实可行的起点，使各个层次的同学都能学到东西，打造有效课堂。

要求学生建立错题集，以便能够更好的巩固这些自己薄弱的地方。

4、加强教学反思，追求高校课堂我们要通过反思教学活动中存在的问题，及时的调整教学。

精心备课和设计课堂的教学程序;精心选择和评讲试题，凡是学生做的联系，教师必须及时批阅;凡是学生做错的题目，老师必须讲细、讲透。

5、加强集体备课，完善教学环节备课组的老师只有团结协作，打整体战，才能实现合作共赢。

每周四的第一节为周集体备课的时间，每天晚上的第一节课是每天的备课时间。

充分利用每一次的备课时间，精心的选择材料，大胆取舍，不断的反思，积极探讨合理高效的复习方法。

不能盲目的赶进度，该块则快，需慢则慢，一切为提高教学质量服务。

针对我校的实际，降低复习的难度，要很抓基础，抓课本，练一般题型，不做偏题、难题和怪题。

6、研讨“新考点”通过对《课程标准》和《教学大纲》的研究，找出新旧内容的变化，在教学中适时调整。

绝密★启用前重庆市第八中学2023届高考适应性月考卷(七)思想政治注意事项：1.答题前，考生务必用黑色碳素笔将自己的姓名、准考证号、考场号、座位号在答题卡上填写清楚。

2.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。

在试题卷上作答无效。

3.考试结束后，请将本试卷和答题卡一并交回。

满分100分，考试用时75分钟。

一、选择题(本大题共16小题，每小题3分，共48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)2023年是改革开放45周年，据此完成1～3题。

1.2022年12月召开的中央经济工作会议进一步强调坚持推进高水平对外开放，传递出中国坚定不移推进改革开放的时代强音。

对此理解正确的是①人民群众是改革开放的决定性力量②改革开放只有进行时，没有完成时③改革开放是中国共产党全部理论和实践的主题④改革开放是发展中国特色社会主义的必由之路A.①②B.①③C.②④D.③④2.十年前，改革开放后全国第一个自由贸易试验区在上海应运而生，上海自贸区挂牌后，推出了全国第一张负面清单，从2013年的190条缩减至2021年年底的27条，负面清单成了自贸区内企业最频繁提及、让他们获得感最多的制度创新之一。

负面清单制度能A.优化精简政府机构职能，提高政府工作效率B.更好地使市场在资源配置中起决定性作用C.加快完善主要由市场决定价格的机制D.降低企业经营风险，促进企业创新发展3.在改革开放45周年到来之际，电视剧《风吹半夏》以第一批民营企业家的创业视角为人们展现了改革开放初期的企业家精神，赢得了观众的广泛好评。

在今天经济形势复杂、各种不确定因素叠加的大背景下，社会更呼唤企业家精神，呼唤企业家们能直面困难和挑战，不断拼搏奋进。

这体现了①文化来自于实践又反作用于实践②真实反映时代风貌的作品能赢得好口碑③文化与经济相互影响、相互促进④时代精神是中国发展的强大精神动力A.①②B.①④C.②③D.③④思想政治·第1页(共8页)2023年1月22日，我们迎来了调整疫情防控政策后的第一个春节，据此完成4～7题。

高考英语二轮复习计划完整版【13篇】（经典版）编制人：__________________审核人：__________________审批人：__________________编制单位：__________________编制时间：____年____月____日序言下载提示：该文档是本店铺精心编制而成的，希望大家下载后，能够帮助大家解决实际问题。

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重庆市第八中学2020-2021学年八年级（下）期末考试物理试题一、单选题1．下列物理量中最接近事实的是（）A．中学生体考跳绳时的功率约5W B．中学生漂浮在水中时浮力约60NC．中学生双脚站立时对地压强约1×103Pa D．中学生爬一层楼克服重力做功约1800J2．下列说法正确的是（）A．压力与重力总是大小相等B．接触面积越大，压强一定越小C．压力越大，压强一定越大D．压强是反映压力作用效果的物理量3．关于功、功率、机械效率的说法正确的是（）A．机械效率可以大于1B．功率越大，做功越快C．机械效率越大，功率越大D．有用功越多，机械效率越大4．下列理解正确的是（）A．水中的静止物体，浮力一定等于重力B．物体体积越大，所受浮力越大C．同一密度计漂浮在不同液体中时浮力相等D．物体密度越大，所受浮力越大5．如图所示，与大气压强有关的是（）A．用真空压缩袋收纳衣物B．医生用针筒注射新冠疫苗C．深海潜水员要穿特制的抗压潜水服D．削平的铅块相互挤压后“粘”在一起悬挂重物6．图中没有利用连通器的特点来工作的是（）A．红酒分酒器B．锅炉水位计C．船闸D．盆景自动供水器7．下列说法正确的是（）A．蓬松的棉被容易被压扁，说明分子间有空隙B．食堂糕点房香气扑鼻，说明分子在不停地做无规则运动C．固体很难被压缩，说明固体分子间只存在引力不存在斥力D．银河系、地球、原子核、分子是按照从大到小的尺度来排序8．如图所示，下列属于费力杠杆的是（）A．用铁锤撬钉子B．用船桨划船C．用定滑轮提钩码D．电工钳9．海上舰艇护航编队在距离较近时，通常采用“前后”队形而非“左右并排”队形进行护航，下列现象中与其原理相同的是（）A．帕斯卡裂桶实验B．高原上用普通锅不易煮熟米饭C．骆驼的宽大脚掌使其不易陷入流沙D．列车进站时乘客应在黄线区域外候车10．如图所示的四个实例中，为了增大压强的是（）A．篆刻刀磨得很锋利B．铁轨下面要铺枕木C．挖掘机装有宽大的履带D．书包肩带越宽使用感越舒适11．如图所示为小田同学做挺举时的动作过程图，下列说法不正确的是（）A．在准备发力过程中他对杠铃做了功B．从上拉到上挺过程中他对杠铃做了功C．从上挺到站立过程中他对杠铃做了功D．在站立稳定过程中他没有对杠铃做功12．如图所示，有一质量不计的轻质木板，木板上放有一个可连续改变重力的物块，木板左端可绕固定点O转动，右端用竖直向上的拉力F拉住使其始终在水平位置保持平衡。

04 语法填空（2021·江西宜春市·高三月考）阅读下面材料，在空白处填入适当的内容(1个单词)或括号内单词的正确形式。

A video showing a traffic police officer pretending to be blind being denied permission to get 1．a bus with a guide dog has been drawing public attention and has led to 2．(heat) online discussions about the lack of support 3．care for the visually impaired (视觉障碍人士).4．shown in the video, wearing a blindfold, the officer wasn’t allowed on the bus with 5．guide dog, and was told no dogs are allowed whether they’re guide dogs or not. Some passengers also scolded the officer for making a scene and wasting their time, while the dog appeared very distressed.The guide dog’s owner Gao Zhipeng, who is visually impaired, told media Monday that this 6．(happen) almost every day since he brought Taobao home in 2014, and it is the same when 7．(catch) a cab. And each time they were refused, Taobao would sink into 8．(depress) for days.The guide dog being denied 9．(board) is just the tip of the iceberg, compared to the 10．(vary) difficulties faced by the country’s visually impaired population every day when they leave their home.（2021·广东广州市·高三月考）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。

初2021届二下英语定时作业（满分：100分）I.单项选择：（1×20，共20分）1.The doctor said_________old man needed to get_________X-ray.A.an;aB.the;anC.an;anD.the;a2.The WHO officials(官员)are__________busy these days that they have to go from one country to__________in order to help control the spread of coronavirus.A.very;othersB.so;othersC.so;anotherD.too;another3.There__________a lot of people selling food along the way outside our school at noon.ed to beed to haveC.are used to beD.are used to have4.It’s really difficult for Chinese teenagers who are studying abroad_________China thesedays because many flights have been canceled(取消).e back toB.to return back toC.to return toD.to return5.Japan has to_______the32nd Olympic Games_______next year because of the COVID-19.A.host(主办);untilB.put off;untilC.host;inD.put off;in6.Our headteacher doesn’t allow__________anything in the classroom,but he allows us__________water it it.A.to eat;to drinkB.eating;drinkingC.to eat;drinkingD.eating;to drink7.Many basketball fans felt terribly_______when they heard the news of Cobe’s sudden_______.A.sad;diedB.sad;deathC.sadly;deathD.sadly;dead8.In fact,he didn’t explain the cause__________the accident__________us clearly.A.for;toB.of;toC.for;forD.of;for9.Many people in other countries didn’t think__________possible to build a hospital with1000 beds in10days.However,people in China made it.A.it’sB.that’sC.that wasD.it10.I didn’t notice anyone________into the room just now because I was busy________to my son.A.get;writingB.got;to writeC.getting;to writeD.getting;writing11.Could you tell me__________?A.how does my daughter get on with her classmates at schoolB.what was happened to my daughterC.what the matter is with your eyesD.what I should do next12.Before all the masks(口罩)__________,you could buy some more.A.are run oute upC.run outD.run out of13.You can’t improve your speaking skills__________you keep on talking with others in English as________as possible.A.if;oftenB.unless;oftenC.unless;usualD.although;much14.---I will volunteer some time to help the homeless.What about you?----____________.A.I do,tooB.Neither will IC.So do ID.So will I15.My parents tried to comfort(安慰)me______blaming(责备)me for the mistake that I______.A.instead of;madeB.instead;madeC.but;didD.instead of;did16.They are_________little children,but they have to do_________chores at home.A.so;so manyB.such;so manyC.so;so muchD.such;so much17.Why not__________sorry to her__________you can be friends again?A.say;thenB.speak;so thatC.say;untilD.say;so that18.---What made you so angry with your son?---_____________.A.Shouting back to his grandma.B.Shouted back to his grandma.B.He shouted back to his grandma. D.Shout back to his grandma.19.Tom’s right leg got badly hurt__________football yesterday.A.playingB.while playingC.when he playedD.A,B and C20.The call-in center for parents__________to help the people who had problems__________with their kids.A.set up;communicatingB.was set up;in communicatingC.was set up;to communicateD.was setted up;communicatingII、完形填空：（1×10，共10分）Have your family ever told you a lie?My dad is a liar!He never tells the truth about anything bad, or21he thinks is bad for me although I have told him that I don’t mind hearing these things.He is the kindest man I have ever met,who never hurts others,as well as the cruelest(最残忍的) man,for he’s always too strict22himself.Every time I phoned home from college and asked dad how his business was going on,he would always reply,“Oh,it couldn’t be23!”When I asked my mum the same question on the phone,however,she honestly(诚实地)told me every problem with dad’s business.I didn’t blame(责备)dad for his lies.24,I cared for him more than before.My dad is a miser(吝啬鬼),too.I hardly see him25new clothes.In fact,he hardly buys new clothes for himself.He always says,“The old clothes are26good enough.”Are they?I see holes in them.Seeing my dad coughing terribly with his hand covering his mouth,I had a strong feeling of 27.When the pains became very serious,he only took some medicine.So it surprised28 when the day came that dad got terribly sick.He was ill in bed.And all the family members got together around him.I stood by his bedside with my eyes29tears(眼泪).Dear dad,you are always pushing yourself too hard,which you shouldn’t.How I wish that you hadn’t kept30so hard before,then you might be in much better health now.21.A.something B.any things C.whatever D.whoever22.A.with B.on C.in D.to23.A.better B.good C.bad D.worse24.A.As a result B.Also C.However D.Instead25.A.wear B.puts on C.dressing D.to be in26.A.also B.still C.even D.ever27.A.worry and sad B.worrying and sad C.worry and sadness D.worried and sad28.A.me B.everybody C.anybody D.nobody29.A.filling with B.filled with C.full with D.filled of30.A.to work B.worked C.from working D.workingIII 、阅读理解：（2×15，共30分）AThe Ritz-Carlton New York Battery Park☆☆☆☆☆($299per night)Location (位置):No.2West StreetAbout it:You can have a good view of the Statue of liberty from the 39-floor,298-room hotel.Millennium Hilton☆☆☆☆☆($219per night)Location:55Church StreetAbout it:You can go swimming in the indoor swimming pool.The hotel is directly across from Times Square.The hotel is on the left of the street.Times Square is on the right of the street.Midtown East☆☆☆☆($170per night)Location:Between East 41st Street and East 54Street.About it:It’s quite convenient (方便的)to visit the United Nations,Grand Central Station,and so on.Marriott New York Financial Center☆☆☆($209per night)Location:No.85West StreetAbout it:Next to many shopping malls.It’s quite convenient if you want to buy things in this city.31.Which hotel is the most expensive according to the information?A.Midtown East.B.The Ritz-Carlton New York Battery Parklennium Hilton.D.Marriott New York Financial Center.32.Which picture shows the right location of Millennium Hilton(A)and Times Square (B)?AB C D 33.If you want to buy a pair of sports shoes,you’d better choose __________.A.Midtown EastB.The Ritz-Carlton New York Battery Parklennium HiltonD.Marriott New York Financial CenterA BChurch Street West StreetAB B East Street A A Church Street BBMr.Green lived in a village.He had a few farms and was the richest there.And he had pigs, chickens,cows and sheep.He worked in the fields with some workers,and his wife had to do all the housework at home.So she was very busy and asked her husband to employ(雇佣)a girl to help her, but he didn’t agree.“There are so many chickens,dear,”said the woman one day.“I can’t look after them at all.”“That’s easy,”said Mr.Green.“There’s Mr.Black’s farm outside our enclosing walls(围墙).We’d better make a few holes in the walls and the chickens will go to his farm through them and eat his vegetables.”And soon Mr.Black found it.He told Mr.Green and his wife about it.They promised that they would stop their chickens doing it,but they didn’t keep their promise at all.Mr.Black thought for a while and found a way.He put nearly20eggs near the holes one afternoon.And that evening,when Mrs. Black was counting her chickens,she said loudly on her farm,“Oh,I’m so lucky today!I’ve found twenty eggs on my farms.”Of course,Mrs.Green saw it herself.And the next morning,Mr.Black found all the holes in the walls were stopped up.34.The Greens and the Blacks lived________.A.in different villagesB.in the same townC.far from each otherD.next to each other35.Mrs.Green was busy because________.A.she had a few farmsB.she had to do all the houseworkC.she was illD.she wasn’t strong enough to do all36.Mr.Green made some holes in the walls to_______.A.let his chickens go to Mr.Black’s farm and eat Mr.Black’s vegetablesB.let his chickens lay(产)some eggs in Mr.Black’s fieldsC.make Mr.Black angryD.make friends with Mr.Black37.The Greens thought________.So they stopped up the holes that night.A.Mr.Black would kill their chickensB.their chickens laid eggs in Mr.Black’s fieldsC.Mr.Black’s chickens would go to their farmsD.Mr.Black would have a fight with them.CWhen we see babies or pets,we can’t help touching them gently to show our love.And they give happy feelings back to us.But a recent study shows that it’s different for plants.A study in The Plants Journal shows that plants don’t like to be touched.That’s because touching changes their genes(基因),and even worse,it can slow their growth.Professor Jim Whelan in Australia gave an explanation.The lightest touch from a human,an animal,or even plants touching each other in the wild,causes a big gene change in the plant.In order to test the idea,the scientists did an experiment(实验)on plants.They grew a number of plants to the age of four weeks.Then they touched them with a brush every12hours over a36-hour period.They found that as a result of the touch,the mitochondria(线粒体)in the plants were partly broken.The mitochondria are the“power-house”of the cells(细胞).The mitochondria produce energy for the cells in both animals and plants.If this“power-house”is broken,the plants will lose lots of energy.The energy is very important for their growth.Whelan further explained,“If the touching is repeated,then the plant growth is slowed by30percent.”Although the touching does have a strong influence(影响)on plants,usually the plants can still be alive._____________Continually touching or moving plants will make them grow shorter than other ones.However,in some ways,this change could be helpful.It may help plants to fight against threats from animals or bad weather.The findings of the research(研究)help us to have a better understanding of the plants.And the research might help with the growth of plants.38.The writer wrote this article in order to_________.A.stop people from touching plantsB.tell people to protect plantsC.introduce(介绍)a scientist to usD.explain a new finding about plants39.What does the underlined word“threats”mean according to the passage?A.威胁B.保护C.援助D.改变40.Which of the following statements may be the missing part in Paragraph4?A.Touching changes the plants,it makes them grow more slowly until they die.B.Touching changes the plants,but it’s not always a bad change.C.We should protect the plants from being touched by humans or animals.D.Scientists don’t care that touching may have a strong influence on plants at all.41.Which of the following is wrong according to the passage?A.Babies and pets liked to be touched.B.The scientist did the experiment to test if touching can change the genes of plants.C.The experiment lasted for four weeks.D.Touching plants is not always bad for their growth.DSophie,a14-year-old British girl,suddenly changed a lot in class.She lost her interest in study and often sat at her desk with her head down.Ethan Miller,one of Sophie’s teachers,found the reason:she was bullied(欺凌)online.Sophie received impolite messages on her phone and on ler shared Sophie’s story on the website of The Children’s Society,a children’s group in the United Kingdom.Sophie was not alone.Not long ago,Korean top star,Chui Se-ri killed herself after years of being bullied online.According to a report in September,one in three young people,in30countries,said they were ever bullied online.Twenty percent of those bullied students chose not to go to school because of it. The study surveyed(调查)more than170,000young people aged13-24from countries in Europe,Asia, Africa and South America.Most of them said social media,like Facebook and Twitter,are the most common places for online bullying.At the same time,online bullying could have serious results for young people.If they are bulliedonline,they may not want to ask the people around them for help.Instead,they just keep the bad feelings to themselves.That may be the reason why they choose to hurt themselves or even kill themselves.To work out the problem,national help and public support are badly needed.The government(政府)and schools should pay enough attention(注意)to this problem.At the same time,training for teachers and parents to stop online bullying is also necessary.Meanwhile(与此同时),here is some advice to keep yourself safe on the Internet.First,make sure that you show enough respect(尊重)to others,although you don’t have similar ideas,values or beliefs. Second,if you experience online bullying,the best response(反应)to a bully is no response at st but not least,keep a record of anything if it shows proof(证据)of online bullying,like screenshot(截屏).You can use this to report and stop them.42.The writer led in(引入)the topic of the article__________A.by listing some numbersB.by telling Sophie’s storyC.by sharing his ideasD.by reporting the latest news43.What can we infer(推断)from the passage?A.Facebook and Twitter are the most common places for online bullying.B.Online bullying is troubling a large number of young people these days.C.The government has already made some rules to stop online bullying.D.If the public(公众)don’t pay enough attention,this problem may become worse.44.If someone sends impolite messages to you online,which of the following is the best?a.call the policeb.make a responsec.keep e recordd.send impolite messages backA.a,bB.b,cC.c,dD.a,c45.If we put the passage into three parts,which of the following is the best?(①=Para.1②Para.2③Para.3④Para.4⑤Para.5⑥Para.6)A.①,②③④,⑤⑥B.①,②③④⑤,⑥C.①②,③④,⑤⑥D.①②,③④⑤,⑥IV、根据首字母及句意补全单词或用所给单词的适当形式填空:（0.5×20，共10分）46.In my o__________,it’s more precious(可贵的)to be kind and hard-working than to be clever.47.It is said that the people who are infected(被感染)with COVID-19have difficulty b__________,Especially(尤其)when they are dying.48.With the d__________of China,more and more people are having an easy life.49.He got even a__________when he heard his son did terribly in the math exam.50.Having a face-to-face c__________is a good way to help you understand each other better.51.C__________with his classmates,he is such a hard-working student.However,his parentsoften say he doesn’t work hard enough.52.If we can take better care of o__________,our parents will be less worried about us.53.I’m very sad that my sister often looks t__________my things when I am away.54.The accident which happened in Quanzhou,Fujian Province on March7th c__________tensof people either to get hurt or to lose their lives.55.I felt so n__________when I first stood on the stage and gave a speech to my students.56.Could you tell me how you__________(deal)with so much work in such a short time?Itcouldn’t be possible for me.57.Can you imagine__________(stay)under the fallen building for68hours alone?58.I have no idea how soon she can get used to the__________(live)without her husband.59.Do you and your sister often have__________(argue)when you have different ideas?60.Don’t you think it’s a waste of money__________(buy)so many expensive clothes which you arehardly ever dressed in.61.The closer you sit to the teacher,the__________(clear)you can hear him.62.I saw a piece of glass drop on the ground and get__________(break).63.The old bikes need__________(fix)up before they are given away to people in need.64.Neither Tom nor his brother__________(be)strong in climbing mountains,but both of themshowed great interest in it.65.If you want to develop your children’s__________(depend),you had better not always helpthem do whatever they should do.V、句型转换：（2×5，共10分）66.She cut out some of her after-school classes because of her poor health.(变一般疑问句)________she cut out________of her after-school classes because of her poor health?67.Both of my parents are able to help me with my study because they were hardly educatedwhen they were young.（变完全否定句）__________of my parents__________able to help me with my study because they werehardly educated when they were young.68.He fell off the bike and got badly hurt yesterday.（对划线部分提问）____________________to him yesterday?69.Who did you borrow so much money from?（变同义句）Who__________so much money__________you?70.大家都都觉得他和他的爸爸很像。

电学综合题【原卷】1．（2021届江苏省盐城中学高三质量检测）在某空间存在着水平向右的匀强电场和垂直于纸面向里的匀强磁场，如图所示，一段光滑且绝缘的圆弧轨道AC 固定在纸面内，其圆心为O 点，半径R ＝1.8m ，OA 连线在竖直方向上，AC 弧对应的圆心角θ＝37°。

今有一质量m ＝3.6×10－4kg 、电荷量q ＝＋9.0×10－4C 的带电小球（可视为质点），以v 0＝4.0m/s 的初速度沿水平方向从A 点射入圆弧轨道内，一段时间后从C 点离开，小球离开C 点后做匀速直线运动，已知重力加速度g ＝10m/s 2，sin37°＝0.6，不计空气阻力，求：(1)匀强电场的场强E ；(2)小球射入圆弧轨道后的瞬间对轨道的压力。

2．（2021届江苏省扬州中学高三月考）如图所示，在平面中有一点P （4，3），OP 所在直线下方有垂直于纸面向里的匀强磁场，OP 上方有平行与OP 向上的匀强电场，电场强度100V/m E =。

现有质量为6110kg m -=⨯，电量3210q C -=⨯带正电粒子，从坐标原点O 以初速度3110m/s v =⨯垂直于磁场方向射入磁场，经过P 点时速度方向与OP 垂直，并进入电场，在经过电场中的M 点（图中未标出）时的动能为O 点时动能的2倍，不计粒子的重力，求；(1)磁感应强度的大小；(2)P 、M 两点间的电势差；(3)粒子从O 点运动到M 点的时间。

3．（2021届江苏省扬州中学高三月考）如图所示，两平行光滑的金属导轨MN 、PQ 固定在水平面上，相距为L ，处于竖直向下的磁场中，整个磁场由n 个宽度皆为x 0的条形匀强磁场区域1、2……n 组成，从左向右依次排列，磁感应强度的大小分别为B 、2B 、3B ……nB ，两导轨左端MP 间接入电阻R ，一质量为m 的金属棒AB 垂直于MN 、PQ 放在水平导轨上，与导轨电接触良好，不计导轨和金属棒的电阻。

重庆市第八中学2020-2021学年高二语文下学期阶段性测试试题（含解析）本试卷共9页，试卷满分：150分，考试时长：150分钟。

注意事项：1.答题前，考生务必将自己的姓名、班级填写在答题卡上。

2.考生作答时，将答案写在答题卡上，写在本试卷上无效。

一、现代文阅读（共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，完成下面小题。

“国学”是一国之学，是国家之学，是具有鲜明民族特色之学。

“国学”是阐释一国“固有之精神”的学问，正如近代国学家梁启超所言:“学术思想在一国，犹人之精神也。

而政事、法律、风俗及历史上种种之现象，则其形质也。

故欲觇其国文野强弱程度如何，必于学术思想焉求之。

”中国“国学”既为中国之学术，那么，何为中国“国学”之“本”?“国”原义是指邦国、疆域。

“国学”的“国”是指“国家祖国”。

“国家”是随着阶级的出现而产生的，而文化也是随着“国家”的出现而得到繁荣发展的。

马克思主义认为，“国家”不仅有阶级性，而且还具有社会性。

“中国”指我们多民族组成的国家。

中国的“国学”指由我们自己的国家产生、发展的学术，其“根”在本国、其发展亦在本国。

“国学”的“国”不仅指“国家”，而且还指“祖国”。

“国家”是在阶级社会才产生的，然而“祖国”在阶级社会产生之前就存在。

“祖国”有自己本土的古老文化，并且这种文化会一直传承延续到有阶级的社会，甚至再延续到阶级消亡的社会。

“祖国”不仅是一个地理概念，也是文化概念。

“祖国”与“国家”既有联系，又有区别，“祖国”的外延一般来说大于“国家”的外延。

称呼别的国家时，国家这个词应该用复数形式，因为它们每一个都是许多个而不是一个。

而称呼“祖国”时，“国家”相对于自己而言具有唯一性。

“本”原义是“根”，这里所说的“国学”之“本”，即“国学”之“根”。

“国学”离不开“本国”，“国学”是在自己的祖国孕育成长。

中国“国学”之“本”即“中国”。

日本学者山田孝雄说:“国体的宣明是国学的第一要义……把国学看成文献学，就止于丢失精神的形骸，同时也丢弃了我国特异的意识。