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1、2024届全国100所名校单元测试示范卷·地理[24·G3DY·地理-ZTB-必考-QGD]三试题
筑材料而大量砍伐林木、破坏植被进行耕种,同时过度放牧降低了植被覆盖率,极大地减缓了草木植被的再生速度。如今的黄土高原“千沟万壑、支离破碎”,而坡度的增大又加快了地表土壤的侵蚀,形成了恶性循环,对当地居
2、2024届全国100所名校单元测试示范卷·地理[24·G3DY·地理-LJB-必考-SD]七试题
C.全年无冬区的北界南移12.河曲形成的主要力量是D.30纬线与春季开始日期等值线的交点将减少A凹岸堆积图4为某原上孤立山丘及附近地质剖面图。图中①②③代表不同时期的地层。据此完B.凸岸堆积成9~1
3、2024届全国100所名校高三月考卷·地理[24·G3YK(新高考)·地理-ZTB-必考-HUB]七试题
答案:(1)荒漠带。(2分)成因:深居大陆内部,距海洋远,海 洋水汽难以到达,降水稀少。(4分) (2)南坡垂直自然带的数目比北坡少;北坡有山地针叶林带, 而南坡缺失。(8分) (3)南坡雪线比北坡高
4、2024届元月调研考试地理(T)试题
1、2024届元月调研考试地理(T)答案
1、湖北省2023-2024学年高二元月期末考试(2024.1)化学答案
1、河南省开封市2023-
5、2024届山西高三第二次学业质量评价地理答案
1、山西省2023~2024学年高三第一学期优生联考历史试题
1、山西省2023~2024学年高三第一学期优生联考生物试题
1、山西省2023
河北省2024届高三年级模拟考试化学注意事项:本试卷共8页,满分100分,考试用时75分钟、答卷前考生务必将自已的姓名班级考场、座位号考生号填写在答题卡一一之、回客选率题时选甜小省案后,用2找销地卡上对尚悠用的答案标号涂用滤皮擦干金后选涂它案标是。回答非选择题时将答案写在容题卡上写卷上无效3.考试结束后,将本试卷和答题卡一并交回。可能用到的相对原子质量:H1C12016532C35.5K39Fe56Co59一、选择题:本题共14小题,每小题3分,共42分。在每小题给出的四个选项中,只有一项符合复目要求。1.科学技术迅速发展,离不开化学知识,下列说法正确的是A,“朱雀二号”遥二成为全球首枚成功人轨的液氧甲烷运载火箭,液氧和甲烷作助燃剂B.“神舟十七号”发动机的耐高温结构材料Si,N4是一种熔沸点很高的分子晶体C.火星直升机制造过程中使用的1500多块碳纤维结构件属于无机非金属单质D.人造卫星和深空探测器强度要求高的零部件采用钛合金或不锈钢等合金材料2.现代高分子材料正向功能化、智能化、精细化方向发展,与各领域的需求密切相关,下列有关高分子的说法错误的是A.有“塑料王”之称的聚四氟乙烯是通过四氟乙烯发生加聚反应制得的B.利用高分子分离膜进行海水淡化,比蒸馏法耗能少C.制造阻燃或防火线缆的橡胶是通过加聚反应制得的线型结构的合成材料D.应用于轻型飞机,消防服的芳纶“1414”的数字指单体对苯二胺和对苯二甲酸的官能团在苯环的位置3.BAS是一种可定向运动的“分子机器”,其合成路线如下。下列说法正确的是OHOHMBASA.M的分子式为C1,HoNO,C.M、BAS均有一个手性碳原子B.M既能与酸反应又能与碱反应D.BAS苯环上的一溴代物共有8种【恐名公渔·高三年级模拟考试·化学第1页(共8页)】
between JaUK-basedVictoB.A label for drug instructions.reading m23.What is probably this text?D.A physical examination result.around 00crisis perioyoualyour beloved schoo teachers?Did they awaken a passion for aonce unappealingbook clubSociMMorirtys theoeWhen he became a sciene teacher22-year-ld Patrick MoriartyA.A medical journal.C.A drug advertisement.Bcome ac】ashoping to make a difference nhisstudents lives.Afterall the natural world has so manythey wirthat henondhe would devote long years toprping hissubject or offer valuable guidance?mouth.fordhood.I7 he aching kids bu theyuMaokeeshowing the paths of the upcoming elipse().Sadly,a lot of them would notClub,OCircle that one.MrMoriartytod his students.We're going to get together on that one."classicsThe youngsters laughedthe clipswoulur for nearly five decades and everyonebe visible in New York.All but one on April 8,2024.color boeorgoe the promise by then But they severely underestimated their teacherYearsfew by and Mr Moriarty made the same promise to all of his classes about the plan inreflectedistant futureAs the popuarity of printed press declined,he created a Facebook group inof strureadin2022derailing the eventd ryintofind former students who would want to attend it.Mr Moriarty never expeeted there would be such a massive turnout,but the word was28.Hspreading like wildfire among his former classmates.On Monday,the 8th of April,about 100Aformer students gathered in their teacher's driveway.As the students started arriving at hishouse,he had trouble recognizing them.However,he remembered most of their names and29."I was so interesting to see them walking up with thinning or gray hair,and looking at mesome amusing stories that happened during his teaching years.30.like,You're still my teacher,he laughed."This has got to be the longest homeworkassignment in history."Lastly,Mr Moriarty suggested marking the 22nd of August,2044,theday when the next visible total solar eclipse will occur.Once again,everyone laughed,but this31time with a little less doubt.24.Why did Mr Moriarty create a Facebook group?A.To popularize astronomical knowledge.B.To seek out former students who wanted to take class.C.To share some funny stories from his teaching career.D.To remind his former students of the previous assignment.025.Which of the following words best describe Mr Moriarty?A.Passionate and committed.B.Honest and wise.C.Respectable and humble.D.Generous and energetic.26.What can be inferred about Mr Moriarty from paragraph 6?A.He suffered from a poor memory.B.He had little influence on his former students.C.He took great pride in his students'achievements.D.He was astonished to see so many of his former students.27.What can we learn about the students'reaction to the reunion of 2044?A.They ignored the special promise.B.They put more trust in their teacher.C.They thought of their teacher being amusing.D.They doubted the possibility of the proposal.CThe UK is experiencing a boom in book clubs,according to new data from event listingcompanies.Book club listings on the ticketing site Eventbrite increased by 350%between 2019and 2023.Between 2022 and 2023 alone,book club listings on the site rose by 41.Anotherevent listing site,Meetup,reported a 14%increase in the number of RSVPs to book clubs英语试题第4页(共8页)
A.If your friend is going through a hard time,try to offer a few words of comfort.water is always 60 and changing formswater61 all the time,but the total anwith a very simple exercise.n English lesson or an arti-B.Discuss their day or the food they have for lunch.62 Earth is not necessarily rurWhy do we need to think about savinggis more active than jusC.Some topics are Okay to discuss with just close friends.D.Good words are never lost.water,which is only 3.5%of all of Ea40is available for human use.Most fresor translation,one exampleE.It's also just a great way to make other people feel comfortable around you.39.37、完形填空(15小题,每小题1分,共15分)38.64 lives.Third,the amount of vsentence that you create.3665than it can be cleaned and puWrite in your vocabulary评卷人先通读短文,掌握其大意,然后从A,B,CD四个选Now,knowing the facts about walling to give freely.Exampleou're very generous.Exam-得I joined a band as a drummer in my middle school.I thought it would be fun分项中选出一个可以填入相应空白处的最佳答案,water in a good way565758.evolunteers at the animal6263.61sentences are true to yourplaying the drum and meeting new friends.At first it was easy,but a month later,itnew word.The next day,got 41.I was the only one who couldn't catch up with the other 42阅读短文,根据语篇要nore example sentence usingOur teacher,Angie,singled me out to keep practicing 43 everyone else第二节词-writinggot to relax.I felt ashamed as my teammates watched me 44 so many times.Fi-For over 3,000 years,Henantwo simple stepsuse new words.nally I got so tired of practicing that I didn't care about doing it right.oW.“Are you giving up on me,Steve?”Angie asked..tural center.A lot of dynasties anare a large number66valualcording to the passage?"Yes,I am,"I 45 and ran away.Angie sent me inside the music roomand said,"Don't be sad.I believe you can make it!"She told me never to46EmpressShe added,"Remember,it's okay to make mistakes.That's 47 we learn andShe respectegrow as musicians."Then she left me alone and I realized Angie was right-by giv-WuZhaoGoldempress ordeing up,I not only gave up myself but also the 48Slip(书简)mountain toWith her comfort,I decided to go on practicing.However,I49couldn'tprotect herof taking vocabularynotes'play well.Withanslation.Knowing my difficulties,my teammates gave me a 50.They spent about threemore hours practicing with me every week.Thanks to their 51,I began to keepTricoloredHorselieved to bor dictionary.He seemsexample sentencepace with them.Later,we performed 52 in an important show.and Human Figu-In the whole process,I was taught that we each had our own job to do in arine(三彩马和the TangD.③②①④living incording to the writer?53,and it would take all of us working together to make the show great.I felt55 in the band,and I can'timagine牵马俑)and made great progress.I loveRoad.It54what my school life would be like without them.D.difficultB.excitingC.busy6667)41.A.boringB.teachersC.musiciansD.artists五)42.A.playersC.whileD.because评卷人ding to the passage?43.A.andB.soC.failD.performe not good at grammar.)44.A.cyB.playD.explained得分当C.continuedyou to remember a new45.A.laughedB.shoutedA:It's a nice day.)46.A.give outB.give awayC.give inD.give upC.whetherD.whenB.whyB:Yeah,warm and sunny.tant to use them at once.47.A.howC.familyD.classesA:Are there always so manyefinition.48.A.classB.teamD.only49.A.alsoB.evenC.stillB:71.B.handC.callD.liftA:Me too.I think this is aUsing Grammar50.A.rideC.smileD.courageB:Yeah.earning New Words)51.A.musicB.support)52.A.terriblyB.wonderfullyC.carefullyD.normallyA:72.D.chanceB.gameC.meetingB:I come from London.HoBeing polite with words53.A.showB.acceptedC.receivedD.refusedA:73.36.If you are not sure54.A.hurtD.nobodyB:That's cool.Do you enips you can take to start)55.A.everybodyB.somebodyC.anybody四、语篇填空(15小题,每小题1分,共15分)A:Yes.There are so many评卷someone for help,saying第一节:阅读短文,从方框中选择适当的词并用其B:74.每空限填A:For two weeks.I havend saying“sory”when得分正确形式填空,使短文通顺、意思完整。I want to see the nightB:OK.I'd like to.Letus discussion with some-词,每词限用findmoveshows you are watchingactivity changefastonemainlysurfaceanyone评卷人ccesses.When others doWhen we look at a picture of Earth from space,most people will know that thegreen is land,the blue is water,and the white is clouds.Taken as a whole,Earth得分论是什么,它都是意义topics can make peopleis56 blue.That is because of the amount of water it has that covers the surfaceSo,how much of Earth is water?About 71 of Earth's 57 is covered in点和要求,用英语写ole's feelings if you say1.要点:1)你最珍ur topics carefully.water.Of that 71%,the oceans hold 9.5%of the water.This water found in2.要求::1)文中不lives of others,but alsooceans is all salt water.The remaining35%of the water is fresh water,which canbe 58 in lakes,rivers,glaciers ()and in the ground.Fresh water is what处的最佳选项,使文章people use for farming,raising animals,drinking,and daily 59Does the moun of water stay the same?the most part,yes.We know thatTedsip考前信息卷(一)第5页共6页
A.If your friend is going through a hard time,try to offer a few words of comfort.water is always 60 and changing formswater61 all the time,but the total anwith a very simple exercise.n English lesson or an arti-B.Discuss their day or the food they have for lunch.62 Earth is not necessarily rurWhy do we need to think about savinggis more active than jusC.Some topics are Okay to discuss with just close friends.D.Good words are never lost.water,which is only 3.5%of all of Ea40is available for human use.Most fresor translation,one exampleE.It's also just a great way to make other people feel comfortable around you.39.37、完形填空(15小题,每小题1分,共15分)38.64 lives.Third,the amount of vsentence that you create.3665than it can be cleaned and puWrite in your vocabulary评卷人先通读短文,掌握其大意,然后从A,B,CD四个选Now,knowing the facts about walling to give freely.Exampleou're very generous.Exam-得I joined a band as a drummer in my middle school.I thought it would be fun分项中选出一个可以填入相应空白处的最佳答案,water in a good way565758.evolunteers at the animal6263.61sentences are true to yourplaying the drum and meeting new friends.At first it was easy,but a month later,itnew word.The next day,got 41.I was the only one who couldn't catch up with the other 42阅读短文,根据语篇要nore example sentence usingOur teacher,Angie,singled me out to keep practicing 43 everyone else第二节词-writinggot to relax.I felt ashamed as my teammates watched me 44 so many times.Fi-For over 3,000 years,Henantwo simple stepsuse new words.nally I got so tired of practicing that I didn't care about doing it right.oW.“Are you giving up on me,Steve?”Angie asked..tural center.A lot of dynasties anare a large number66valualcording to the passage?"Yes,I am,"I 45 and ran away.Angie sent me inside the music roomand said,"Don't be sad.I believe you can make it!"She told me never to46EmpressShe added,"Remember,it's okay to make mistakes.That's 47 we learn andShe respectegrow as musicians."Then she left me alone and I realized Angie was right-by giv-WuZhaoGoldempress ordeing up,I not only gave up myself but also the 48Slip(书简)mountain toWith her comfort,I decided to go on practicing.However,I49couldn'tprotect herof taking vocabularynotes'play well.Withanslation.Knowing my difficulties,my teammates gave me a 50.They spent about threemore hours practicing with me every week.Thanks to their 51,I began to keepTricoloredHorselieved to bor dictionary.He seemsexample sentencepace with them.Later,we performed 52 in an important show.and Human Figu-In the whole process,I was taught that we each had our own job to do in arine(三彩马和the TangD.③②①④living incording to the writer?53,and it would take all of us working together to make the show great.I felt55 in the band,and I can'timagine牵马俑)and made great progress.I loveRoad.It54what my school life would be like without them.D.difficultB.excitingC.busy6667)41.A.boringB.teachersC.musiciansD.artists五)42.A.playersC.whileD.because评卷人ding to the passage?43.A.andB.soC.failD.performe not good at grammar.)44.A.cyB.playD.explained得分当C.continuedyou to remember a new45.A.laughedB.shoutedA:It's a nice day.)46.A.give outB.give awayC.give inD.give upC.whetherD.whenB.whyB:Yeah,warm and sunny.tant to use them at once.47.A.howC.familyD.classesA:Are there always so manyefinition.48.A.classB.teamD.only49.A.alsoB.evenC.stillB:71.B.handC.callD.liftA:Me too.I think this is aUsing Grammar50.A.rideC.smileD.courageB:Yeah.earning New Words)51.A.musicB.support)52.A.terriblyB.wonderfullyC.carefullyD.normallyA:72.D.chanceB.gameC.meetingB:I come from London.HoBeing polite with words53.A.showB.acceptedC.receivedD.refusedA:73.36.If you are not sure54.A.hurtD.nobodyB:That's cool.Do you enips you can take to start)55.A.everybodyB.somebodyC.anybody四、语篇填空(15小题,每小题1分,共15分)A:Yes.There are so many评卷someone for help,saying第一节:阅读短文,从方框中选择适当的词并用其B:74.每空限填A:For two weeks.I havend saying“sory”when得分正确形式填空,使短文通顺、意思完整。I want to see the nightB:OK.I'd like to.Letus discussion with some-词,每词限用findmoveshows you are watchingactivity changefastonemainlysurfaceanyone评卷人ccesses.When others doWhen we look at a picture of Earth from space,most people will know that thegreen is land,the blue is water,and the white is clouds.Taken as a whole,Earth得分论是什么,它都是意义topics can make peopleis56 blue.That is because of the amount of water it has that covers the surfaceSo,how much of Earth is water?About 71 of Earth's 57 is covered in点和要求,用英语写ole's feelings if you say1.要点:1)你最珍ur topics carefully.water.Of that 71%,the oceans hold 9.5%of the water.This water found in2.要求::1)文中不lives of others,but alsooceans is all salt water.The remaining35%of the water is fresh water,which canbe 58 in lakes,rivers,glaciers ()and in the ground.Fresh water is what处的最佳选项,使文章people use for farming,raising animals,drinking,and daily 59Does the moun of water stay the same?the most part,yes.We know thatTedsip考前信息卷(一)第5页共6页
whenof collecting them was to use them as materials for creatingartworkshe saysLi hopes to promotevromntareness throug hisorkand inspire otherneedartistsrstudents tosthe prentianuseessmterin creatingart.nneedethis fast-paced word,what wehave nabdc isaste,he saythe drWhy did Liuse to rush out of his cassroom when the bell rang?RA.To do housework.B.To hunt for“treasure”.suppoiC.To relax himself.D.To help clean the trash.popula25.In what way is Li influenced by traditional Chinese paintings?years.A.He highlights the animals'spirit.Even tB.He uses a freehand brush as a tool.largerC.He emphasizes subjects'physical appearance.TD.He became interested in Chinese paintings.throughWhich of the following is Li's expectation?tackle itheA.Less cars will be scrapped.B.The world wilbe faster-pacedWh1C.More people will benefit from art.D.More attention will be paid to waste.A.nt toWhat is the best title for the text?BhisA.Turning scrap into works of artdtssd blid./B.Taking measures to reduce wasteD.00vasteC.Showing respect for kids'inrestsWhaals toD.Gaining inspiration from Chinese cultureA.ChasIn an effort to help important insects like bees and butterflies,busstopsatingacross the UK and Europe are getting living roof.Small gardens on bus shelterfromroofs are being planted with flowers chosen to help support the strugglinginsects31.What二生Called"ee bus stops"or"bu stopthe gardens provide mucb-needed islandsA.Itandof nature in a tough,man-made enviroment of a city.C.ItBees and the poiators(传粉者)like butterfies are pivotal ingrowingnandplants,such as fwers,trees,and crops Without bees rother nstsmanyA shxactplants could ot produce seedand weuwfruitsr vegetables But incut produd ofrent years,insect numbers have been dropping sharply.The Wildlife Trustsaregion's egroup which works to proteet wildlifee UK,sys that inseetumber there“Morers,have dropped by 50%since 1970.to significa的)Bce bus stops are likeordinary bus seter but small gardens havee beenhead of ththis has drnes.dded to theooThe garderewerdpntoCarbotionbees and butterfies Becaue the ofopgarden is heavy epcialN]【24新教材·DY·英语(四)一R一选择性必修第四册一42
19.(12分)用红、黄、蓝绿这4种颜色或部分颜色给如图所示的5块区域A,B,C,D,E涂色,要求同一区域用同一种颜色,有公共边的区域使用不同的颜色,则不同的深色方法共有多少种?面大量中九)密封线(果龄堡长晚)周光静还湖)果龄壁代宝盛人超容内代ne则龄感审贤龄世章鑫景崇卡贤龄已用策代量素,2益一A1一(三【24新教材·DY数学(三)一RA一选择性必修第三册一N】
①让人流连忘返②黄河、淮河、洛河等河流滋养着这片富饶的土地③在河南省,四季分明,气候适宜④这里有雄伟的山脉、清澈的河流以及各种珍稀的动植物资源⑤嵩山、老君山、喳蚜山等山脉风光各异A.④5①2③B.③5①②④C.④⑤2①3D.③52①44.【礼仪篇】小豫在光明中学的学弟小博想去市奥体中心,请你根据右面史化富的路线图,以小豫的口气为小博指一条最短的路线。(4分)言馆市奥保市调馆5.【文旅篇】以下是小像从网站上找到的与河南文旅相关的新闻,请你替小豫为它拟一个恰当的标题,30字以内。(3分)标题:河南日报讯(记者谢建晓杨之甜)2024年3月14日,记者从安阳市政府新闲办举行的新闲发布会上获&,为主富文旅业态,繁荣夜经济,该市丛本月起推出“大邑商·夜安阳”持物馆夜游开放洁动,般墟博物馆、中国文字博物馆、服理景区、通河、曹操高陵、安阳博物馆推出夜游项目,围绕“夜游、夜赏、夜娱、夜购、夜食”五大主题,让游客在夜晚也能领略三千年大邑商的魅力。近年来,安阳围绕打造般墟甲骨文中华文化新地标、中原文旅新名片,建工程、育业态、提品质,已形成以般墟博物馆、中国文字博物馆、曹操高陵造址博物馆、安阳博物馆等重量级博物馆为主体的博物馆群」值得一提的是,般墟博物馆是这次夜游开放活动的重头戏。二、现代文阅读(共27分》得分评卷人(一)阅读下文,完成6~9题。(共15分)在希望的田野上花来马上就要大学毕业了,在实的问题上与妈妈桂兰产生了分歧。花珠在上海读的大学,挂兰希望花珠能在上海找个单位实,将来有机会留在上海。花珠呢,却想回河南老家。两人虽然远隔千里,有了微信便近在眼前,·丝毫不耽误交流。花珠说:“妈,上海这地方,大学生多了去了,显不着咱,还不如回去。”挂兰心里荡漾了一下,她知道花珠的心思,担心自己一个人在家孤单。花珠四岁那年,地爸出车精走了,是自己累死累活把她养大的,她比一般的孩子更懂得感恩和孝顺。但是,当妈的还是希望自己的子女像雄鹰一样飞出去,能飞多远就飞多远,能飞多高就飞多高。想到这里,桂兰稳定了一下情绪,说:“人往高处走,水往低处流。傻闺女,好不容易走出去了,咋能再回来呢?”“妈,人往高处走,其实高处不胜寒;水往低处流,其实海能纳百川。您一直没走出村,不也是过了大半辈子?”“别跟妈贫嘴!妈吃的苦你知道?脸朝黄土背朝天,风里来雨里去…”“妈,都是老皇历了,我的耳朵都听出茧子了,就别再提了。”其实,大前年,村里的土地都流转给了花珠的堂哥希望,希望每个月给大家丰厚的粗金。这比种地还划算,家里有好几亩地,自己不用操心,一年还白落好多钱。桂兰不吭声了。花味说:“妈,希望哥租一千多向地,都弄哈哩?”桂兰说:“哈子观光农业园,说是种菜都不用土。喀,妈也搞不明白。需要钱不?妈给你转。今年的地租,希望前天转给我了。”WB语文试卷(压轴二)第2页博庆8页)
力,陆续分封了多个异姓王。到汉初之时,东方各地特别是楚、齐、赵地的文化传统仍有很大影响力,东西方各地文化俗的差异和冲突明显。有学者认为:刘邦建立汉家帝业,一方面必须“承秦”,包括承秦之制,另一方面又必须尊重东方社会之俗,特别是楚、齐、赵人之俗。一摘编自刘新菊《汉初郡国并行制实施原因探讨》(1)根据材料一并结合所学知识,概括郡县制的特点和作用。(8分)(2)根据材料二并结合所学知识,简析汉初实行郡国并行制的原因。(5分)18.阅读材料,完成下列要求。(14分)材料一唐朝开元、天宝时期,官僚、地主、富商兼并土地成为常态。失去田地的农户无所依靠,除一小部分沦为佃客、荫户外,绝大多数农民为了逃税和活命,四处流散游走,天宝时期逃户总数高达五百万以上。与此同时,掌握大量财富的统治者与官吏贵族地主富商生活腐化和精神堕落,使得整个统治阶层缺乏改革创新、求治为民的精神,唯有醉生梦死、腐化贪婪的堕落。到唐玄宗执政中后期,朝堂内外政治投机、拉帮结派者众多,致使权力部门的制衡机制丧失。为应对外部复杂形势和日益严峻的边患威胁,加强边防力量,拱卫李唐政权,开元时玄宗在原先军事部署的基础上,在边镇增置节度使,导致“弱干强枝”与“内轻外重”的军事防卫格局形成。摘编自苏毅、刘薇等《安史之乱复杂诱因再探》·1325DY·历史(二)-R-中外历史纲要(上)-QG
15.下列语句体现的哲理与“知彼知己,百战不殆”一致的是A.怨天尤人B.讳疾忌医C.看相知名D.随机应变16.广大党员干部要深入开展学贯彻中国特色社会主义思想主题教育,牢固树立和践行正确政绩观,结合中心任务和本职工作,精准查找短板、实打实解决问题,通过找差距、补短板、强弱项,不断推动高质量发展实现新跨越。这体现了A.要善于把握矛盾的主要方面,实现新跨越B.要着重把握事物的主要矛盾,围绕中心任务找问题C.整体的功能状态及其变化影响部分,要补短板D.正确的政绩观决定事物发展的方向和进程题序12367910111213141516答案第Ⅱ卷(非选择题共52分)二、非选择题17.阅读材料,完成下列要求。早在先秦时期,中国思想家就已提出形神关系问题。《荀子·天论》中说:“形具而神生”,是说人的躯体是自然界的产物,而人的心理又是由躯体所派生的,人的身形成了,也就有了心理。东汉桓谭提出:“精神居形体,犹火之然(燃)烛矣。”王充继承此说进而提出:“天下无独燃之火,世间安得有无体独知之精?”(1)上述材料涉及的哲学基本问题是什么?(4分)(2)请评析材料中的观点。(6分)乐·525DY·思想政治(一)-R-必修4-QGB
大单元学三步一体高效训练周测卷·化学D.该反应说明A13+与CO-不能大量共存注意事项②B7.下列反应的离子方程式书写正确的是周测卷二电解质的电离与离子反应必须使用黑色签字A.向铁粉中加人稀盐酸:2Fe+6H+—3Fe3++3H2(40分钟100分)将选择題答案填入选择题后的答题表中B.氢氧化镁与稀盐酸反应:OH十H+一H2O必备知识点电解质与非电解质,电离方程式,离子方程式的书写,离子共存及检验等C.过量的CO2与澄清石灰水反应:OH十CO2—HCO笔书写命题视点关键能力点离子方程式的书写及其应用D.将鸡蛋壳放入足量醋酸中:CaCO3十2H+一Ca+十H2O十CO2日常生活情境生产环保情境实验探究情境命题情境点8.下列变化中,涉及离子反应的是1、6题5、13题12、14题A.过氧化氢分解制氧气B.酒精燃烧可能用到的相对原子质量:H1C12016Na23S32C135.5Fe56Ba137C.冰融化成水D.铁棒置于稀硫酸中第I卷(选择题共48分)二、选择题:本题共4小题,每小题6分,共24分。每小题有一个或两个选项符合题意,全部选对一、选择题:本题共8小题,每小题3分,共24分。每小题只有一个选项符合题意。得6分,选对但不全的得3分,有选错的得0分。1.在荧光屏幕制造中,电解质溶液常用作屏幕液体晶体显示器(1CD)中的液晶填充物,下列溶液9.某溶液中,只含有大量下列四种离子,推测X离子及其个数可能为一定不适合作填充物的是离子Fe2+A1+CXA.氢氧化钠溶液B.稀硫酸C.医用酒精D.食盐水个数a2a2a62.某溶液中存在大量的H+、C1、Ca2+,该溶液中还可能大量存在的是A.OH-、6aB.CO、3aC.So}、aD.NO5、6aA.AgB.COC.NOD.OH10.下列各组的两种物质混合后发生化学反应,可用同一离子方程式表示的是3.下列电离方程式正确的是A.氢氧化钠溶液与盐酸,氢氧化钠溶液与硫酸溶液A.硝酸铝:A1(NO)3一A13++3NOB.BaCl2溶液与Na2SO溶液,Ba(OH)2溶液与Naz SO溶液B.硫酸:H2SO4—H++HSO4C.Na2CO3溶液与硝酸溶液,NaHCO3溶液与硝酸溶液C.碳酸氢钠:NaHCO,一Na+H十COD.石灰石与盐酸,石灰乳与盐酸D.氢氧化钙:Ca(OH)2一Ca+2Ht+2O1.在甲、乙两烧杯溶液中,分别含有大量的Cu+、K+、H+、CI、CO、Ba+、OH中的某几种,已4.下列各组离子能在溶液中大量共存的是知甲烧杯溶液呈蓝色,则甲烧杯的溶液中可能含有的离子是A.Na+、Cu2+、OH-、CIB.K+、Na+、OH-、HCOA.K+、OH、COB.Cu2+、COg、CC.CO、NO5、Mg2+、SOD.Cu2+、Cl-、H+、SOC.Cu+、Ht、CD.CO-、OH-、CI5.已知氯化铵分解产生NH3和HCI两种气体,利用如图所示的物质转化可实现氯化铵分解产物12.某无色溶液中可能大量含有Na+、SO、CI、OH、NO、Cu+中的若干种,某同学依次对该线的分离。下列说法正确的是无色溶液进行下列实验,且每步所加的试剂均过量,观察到的部分现象如下表:A.a为电解质Mg(OH)CIB.c能导电步骤操作现象C.图中涉及的物质中有一种氧化物NHCI(s)取试样1,先滴加酚酞溶液溶液变红D.反应①和②的基本反应类型相同取试样2,向该试样中滴加Ba(NO)2溶液和稀硝酸有白色沉淀生成6.油条是我国的传统食品,其传统做法是将明矾[KAl(SO1)2·12H2O]、纯碱、食盐按比例加入温将Ⅱ中所得混合物过滤,向滤液中加入AgNO溶液有白色沉淀生成水中,再加入面粉,搅拌成面团,放置,使面团产生气体,形成孔洞,放置过程发生反应:3NzCO3下列有关该无色溶液的结论不正确的是+2KA1(SO)2·12H2O—3NaSO,十KSO,+3CO个+2A1(OH)3¥+21H2O。下列有关判A.该实验无法确定是否含有SOB.肯定含有的离子是Na+、SO、CI、OH断正确的是C.可能含有的离子是NOD.肯定没有的离子是Cu2+A.明矾属于混合物B.放置过程发生的反应中,反应物和生成物均为电解质题序789101112C.KAI(SO)2在水溶液中的电离方程式为KA1(SO)2一K++A18++SO答案·3·25ZCYK·化学(二)-R-必修第一册-HAIN
;挡光片B经过光电门时,小车的速度B=(2)小车的加速度a=13.(6分)某同学采用如图甲所示的装置来测量速度和加速度。将气垫导轨的右端垫高,在左端装上光电门,把带遮光条的滑块从导轨右端由静止释放,遮光条通过光电门的遮光时间为t,已知遮光条的宽度为d。数字计时器遮光条光电门滑块左连气源气垫导轨甲(1)遮光条经过光电门的均速度=(用题中所给字母表示)(2)改变并测量遮光条的宽度,重复实验,每次释放滑块时,保证遮光条的前端到光电门的距离相同,记录遮光时间,求出对应的遮光条经过光电门的均速度。根据得到的实验数据,在坐标系中描点,如图乙所示,根据所描的点,在图乙中作出元随t变化的图线。↑v/(m·s1)2.290日2.2802.270日2.2602.250日用t/(x103s)2.24065.0010.0015.0020.0025.00乙(3)结合一t图线,可求得遮光条的宽度d趋于0时,遮光条经过光电门的瞬时速度v=m/s。(结果保留3位小数)(4)若已知遮光条经过光电门的瞬时速度为,滑块释放时的位置到光电门的距离为L,则滑块的加速度a=。(用题中所给字母表示)经·13·25DY·物理(二)-LKB-必修第一册-QG
大单元学三步一体高效训练全国@迥所名校单元测试示范卷·物理第一单元《运动的描述》综合测试(75分钟100分)单元重难点质,点、参考系、位移、速度和加速度、图像题视点生活实践问题情境:1、3、4、6、7、9、10、13、14、15题命题情境点学探索问题情境:2、5、11、12题第I卷(选择题共46分)一、单项选择题:本题共7小题,每小题4分,共28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。1.2023年亚运会在杭州举行,下列有关说法正确的是A.研究长跑运动员的运动轨迹时,可以把运动员看成质点B.研究短跑运动员的起跑动作时,可以把运动员看成质点C.以泳池中的水为参考系,正在游泳的运动员是静止的D.描述400米跑中运动员的运动快慢时,可以用位移除以时间2.关于参考系和相对运动,下列说法正确的是A.地球公转是太阳相对地球的运动,太阳东升西落是地球相对太阳的运动B.乘客坐在行驶的公交车里,认为自己是静止的,是以地面上的树木为参考系的C.甲、乙两船以相同的速度向正南方向行驶,若以甲船为参考系,则乙船是静止的D.跳伞运动员下落时看到大地迎面而来,是以大地为参考系的3.百公里加速时间指的是汽车从静止开始加速至速度为100k/h需要的时间,是对汽车动力最直观的体现。若某汽车百公里加速需要9s,在此加速过程中,汽车的均加速度大小约为A.40m/s2B.11.1m/s2C.3.1m/s2D.0.19m/s2经·1·25DY·物理(一)-R-必修第一册-QGA·Y
18.(17分)一群学生参加学科夏令营,每名同学至少要参加一门学科考试.已知有80名学生参加了数学考试,25名学生参加了物理考试,27名学生参加了化学考试,学生总人数是只参加一门学科考试学生人数的2倍,也是参加三门学科考试学生人数的3倍.(1)求只参加两门学科考试的学生人数;(2)在只参加两门学科考试的学生中,若既参加物理考试又参加化学考试和既参加数学考试又参加化学考试的总人数为8,求既参加数学考试又参加物理考试的人数.。25DY·数学(一)-RB-必修第一册-N
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7.2021年11月11日,中国共产党第十儿屈中央委员会第六次全体会议在北京胜利召开,会议审议通过了《中共中央关于党的百年奋斗重大成就和历史经验的决议》。回首百年党史,我们可以用“4个天地”来形容、即
12.What is the man going to do this weekend?A.Work at a shopping mall.B.Shop with the woman.C.Pack up his summer clothes.听第9段材料,回答第13至16题。13.Who is the woman probably?A.A professor.B.A student.C.A host.14.Why is George starting the program at the university?A.To help students get experience.B.To provide training for teachers.C.To attract local opera companies.15.What does the man want to do?A.Go to the theater.B.Visit the companyC.Join the program16.How does the man feel in the end?A.Confused.B.Surprised.C.Relaxed.听第10段材料,回答第17至20题。17.What is the speaker probably doing?A.Reporting a piece of news.B.Chairing a meeting.C.Hosting a program.18.What should the listeners do before applying for the job?A.Contact the secretary.B.Take necessary exams.C.Prepare a first aid kit.19.How often did the speaker clean the pool?A.Once a week.B.Twice a weekC.Three times a week20.What is the speaker trying to do in the end?A.Talk about the job prospects.B.Introduce the working environmentC.Encourage the listeners to be volunteers.第二部分阅读理解(共两节,满分50分)第一节(共15小题;每小题2.5分,满分37.5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。ATraveling to Europe can be expensive,butif you get creative and avoid tourist hot spots like London and Paris,you may beable to avoid high price tags.According to average hotel prices,flight deals,available vacation packages and affordable attractions,you can choose the best cheap European vacations.
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5.2025年国家基本医疗保险、生育保险和工伤保险药品目录是国家医保局成立以来的第八次调整,本次日录调整新增114种药品,其中50种1类创新药,同时调出了29种临床没有供应或可被其他药物更好替代的药品,肿瘤、慢性病、精神疾病、罕见病、儿童用药等重点领域的保障水得到明显提升。本次目录调整①旨在通过动态化调整优化药品目录结构②彰显了民生温度,回应高层次用药需求③提升用药的可及性,减轻群众就医负担④鼓励医药创新,推动医药业高质量发展A①②B.①④C.②③D.③④6.2025年是“十四五”收官之年,全国人大常委会审议通过了《中华人民共和国食品安全法》,并于12月1日起施行。本次修改重点在继续强化法律责任,回应健康中国建设及公众饮食安全需求,为未来食品安全的健康发展指明了方向。这表明全国人大常委会①作为全国人大常设机关,通过立法维护人民健康福社②坚持科学立法,以法制守护人民“舌尖上的安全”③作为国家立法机关,行使宪法规定的审议权、决定权4依法行使全国人大各项职权,完善社会主义法律体系A①②B.①③C.②④D.③④7.2025年是新疆维吾尔自治区成立70周年。1960年,新疆地区生产总值仅13.6亿元,2017年首次突破1万亿元,2024年达到2万亿元。新疆的繁荣变化令国人自豪、令世界瞩目。由此可以推断,新疆的变化发展①得益于在少数民族居住的地区推行民族区域自治制度②有利于增强新疆人民的获得感、幸福感、满足感③有利于巩固和发展等团结互助和谐的民族关系④得益于在党的正确领导下落实了人类命运共同体理念A①②B.①④C.②③D.③④8.马克思提出“东方社会可以实现不同于西方社会的发展道路”:毛泽东提出将中国“建设成为强大的高度社会主义工业化国家”;邓小提出“中国式现代化”的概念;全面系统深入地阐述了中国式现代化的科学内涵,即中国式现代化的本质要求、中国特色和重大原则等。据此分析下列说法正确的是高三一模政治第3页共8页
·化学·参考答案及解析有0.1molHCO;向溶液b中加人硝酸酸化的AgNO成碘酸和HCI的反应:5Cl2+L+6HO=2HIO十溶液,产生的白色沉淀d为AgCl,由于反应①加人了盐10HCl,根据反应计量数,可知此时溶液中有0.7mol酸,因此不能说明溶液X中含有CI;最后根据溶液呈I被氧化,则剩余的n(I2)=1mol一0.7mol=电中性,溶液X一定含有Na,且物质的量至少为0.3mol,C项正确;经分析,c点时I全部被氧化为0.1mol。由以上分析可知,溶液X中一定含有Na+、HIO,c点溶液中含有CI-和IO,结合原子守恒,其Mg+、SO-、HCO,A项错误;反应②的离子方程式:中n(IO)=n(I)=2mol,故原混合液中n(FeI)=Ba²++2OH-+Mg²++SO²-==BaSO +Mg(OH)2·1mol.由于原混合溶液中n(Fe²+)=3mol,故原混合溶液中n(FeCl)=2mol,则c点(Cl-)=2n(Cl)+B项错误;溶液中不含CO,C项错误:Na+的物质的量至少为0.1mol,因此c(Na+)≥1.0mol·L-,D项正确。IO共2mol+19mol=21mol,个数为21N,D项12.C【解析】根据W、X、Y、Z、M均在短周期且原子序数错误。依次增大,结合W、X、Y、Z构成的小分子的结构可以二、非选择题推出W、X、Y、Z依次为H、C、N、O,W与M最外层电16.(13分)(1)第二周期第IVA族(2分)子数相同且M在五种元素中原子序数最大,可推知M(2)K(1分)K与水反应比Na与水反应更剧烈或K与O反应比Na与O2反应更剧烈(1分)氧最高化合价不是十6价,而是+2价,B项错误:O和(3)盐(1分)NaHS==Na++HS-(2分)Na形成的化合物NaO或NaO中阴阳离子的个数(4)2Ca(OH)+2Cl=CaCl+Ca(CIO),+2H,O之比均为1:2,C项正确;H、C、N、O形成的(2分)(NH,)CO,和NH,HCO,均为离子化合物,D项(5)2A1+2OH-+6HO=2[A1(OH),]-+3H↑错误。(2分)13.B【解析】根据流程图可知:气体1为NH、气体2为(6)分液漏斗中溶液呈浅棕黄色,滴入试管后CCI:层CO,NH,的溶解度大,先通人饱和食盐水得到碱性食变为紫红色(2分)盐水,再通入酸性的CO更容易反应,A项正确;反应【解析】根据元素周期表中各元素的位置推知:a、b、c、1得到的是NaHCO的晶体,故离子方程式为Na*十d、e、f、g、h、i 分别为 H、C、Na、AI、S、CI、K、Br、I。CO+NH+HO===NH+NaHCO,B项错误;(1)C在元素周期表中的位置为第二周期第IVA族。根据关系式:2NaCl~2NaHCO~Na2CO~Na2SO,(2)K的电子层数比Na多一层,原子核对最外层电子要制备19tNa2SO,理论上需要NaCl的质量为的束缚能力较弱,更容易失电子,金属性更强。证明K11.71,C项正确;由于焦亚硫酸钠的溶解度较大,且随的金属性比Na强的事实为K与水反应比Na与水反温度升高而逐渐增大,故从溶液中得到焦亚硫酸钠晶应更剧烈或K与O反应比Na与O:反应更剧烈。体的操作为蒸发浓缩、冷却结晶、过滤、洗涤、干燥,D(3)H、Na、S三种元素形成的化合物为NaHS,属于盐,项正确。其在水溶液中的电离方程式为NaHS=Na十14.C【解析】反应①和③均不存在元素化合价的变化,HS-。均为非氧化还原反应,A项错误;反应②的化学方程式(4)CL在工业上制取漂白粉的化学方程式为为2NH+3HCIO=N↑+3HCI+3HO.氧化剂2Ca(OH)2+2Cl, =CaCl, +Ca(CIO)2+2H, O。与还原剂的物质的量之比为3:2,B项错误;由反应原(5)AI与NaOH溶液反应的离子方程式为2A1十理图可知,总反应的化学方程式为2NH3十2OH-+6H,O=2[A1(OH)]-+3H↑。3NaCIO-=N2↑十3NaCI+3HO,C项正确;该过程(6)根据实验装置图可知,利用单质间的置换反应验证中不存在非极性键的断裂,D项错误。15.D【解析】由图可以看出,当通人Cl1mol时,溶液实验现象为分液漏斗中溶液呈浅棕黄色,滴人试管后中的Fe²+没有变化,I由2mol到0,则还原性:1>CCL层变为紫红色。Fe²+,A项正确;由分析,a点时共消耗1mol+1mol=:17.(14分)(1)11.2(2分)8(2分)2mol氯气,则已通人标准状况下氯气的总体积为(2)15.6(2分)2mol×22.4L·mol-=44.8L,B项正确;由图可以(3)1:7(2分)1.204X10(2分)看出,氯气从2.5mol到b点时,通人氯气的量为(4)0.1(2分)3OH-+2CO=CO²+HCO+6mol一2.5mol=3.5mol.发生了氯气氧化碘单质生HO(2分)·2·
·英语·参考答案及解析5.B【解析】81岁了还想着兑现承诺,且根据要就是因为想兑现对母亲的诺言,因此母后文“When he gathered his transcripts(成亲对于信守承诺的“理念”是Bandy如此看绩单)together”可知,Bandy确实采取实际重诺言的原因。故选C项。行动了。故选B项。11.A【解析】八十多岁再去学,必定不是6.B【解析】根据后文“Hewentontoearna一件容易的事,结合本句while翻译为“尽‘B’inabiologycourse”可知他发现自己仅管”。故选A项。答案解析网剩下一科需要完成。故选B项12.C【解析】根据故事内容可知,Bandy是一7.A【解析】根据后文“Hewentontoearna个很好的榜样,激励着人们,要履行承诺。‘B'in a biology course, thushim to故选C项。答案解析网achievealifelonggoal.”可知,他在完成一科13.B【解析】根据前文“Bandy'syoungest后顺利毕业。故选A项。son, Kyle, was there on the day of8.D【解析】完成了“biologycourse”后,方能graduation”可知,这是在毕业典礼上,作为顺利毕业,“使得他”能兑现承诺。故选家人,肯定是来表示祝贺和鼓劲的。故选D项。B项。答案解析网9.B【解析】根据后文“shedrilledintomeas14.D【解析】根据后文“he'sfollowingchildThetwowas,"ofthethroughwith hisword,”可知,该句是作为mostimportant things are your health and youn儿子对父亲完成学业的评价。故选D项。word of”可知“母亲”二直对我的叮嘱15.A【解析】根据后文“Nomatterhowlong是:人也要健康,也要信守承诺。故选B项。it takes,ifit's a promise,find a way to do10.C【解析】通过第一段的提示可知,Bandyit.”及整个故事的主线可知,信守承诺值得之所以要在八十多岁还要去完成学业,主一个人用行动去践行。故选A项。
18.已知抛物线T:x²=2py焦点为F(0,1),A(x,y),B(x2,y2),C(x,y)为抛物线19.已知函数f(x)=e+sinx-ax,aeR.上的三个动点,且x A.侧重于军事领域的改革B.以加强中央集权为要C.适应了社会转型的需要D.旨在维护贵族的利益18.下列砖画出土于甘肃嘉峪关魏晋古墓,生动反映了当时汉人胡食的生活俗。这组砖画可以用来直接研究图1制作蒸馍与烙饼图2食用烧烤食品A.民族交融B.江南开发C.政权并立D.经济南移19.贞观年间,文成公主和亲吐蕃时,带去了唐太宗赏赐的数量繁多的经史、医典、器械等。这一事件A.加强了唐朝对西藏地区管理B.增强了西域与中原之间往来C.促进了唐文化在吐蕃的传播D.改变了吐蕃人民的游牧俗20.下图是对唐代某赋税制度的描述。该制度的实施属于量出制入;●户无主客,人无丁中,以贫富为差;●居人之税,秋、夏两征之A.租调制B.均田制C.租庸调制D.两税法21.公元997年,宋太宗将全国州郡分为15路,各路设有地方机构(相关信息如下表所示)。此举意在地方机构名称长官简称职责转运司转运使漕臣财政兼监察地方官吏提点刑狱司提点刑狱宪臣司法兼监察安抚司安抚使帅臣军事,有时监管民政提举常司提举常仓臣常仓救济,农田水利A.加强对地方的控制B.落实崇文抑武方针C.解决藩镇割据问题D.应对军事财政危机22.许衡在《时务五事·立国规模》的上书中写道:“国朝土宇旷远,诸民相杂,俗既不同,论难邃定。考之前代北方,奄有中夏,必行汉法,可以长久。故后魏、辽、金历年最多,其他不能实用汉法,皆乱亡相继,史册具载,昭昭可见也·····国家仍处远漠,无事论此,必如今日形势,非用汉法不宜也。”下列关于“国朝”的统治措施,叙述正确的是A.设立北庭都护府加强对西域的管辖B.创立新的选官制度科举制 策、管理和监督,丰富了基层民主实践,彰显了全过程人民民主最广泛、最真实、最管用的特点。(3分)④中国共产党领导的多党合作和政治协商制度是发扬社会主义民主的重要形式。湖南搭建政协履职台,支持政协委员协商议政、民主监督,发挥了社会主义协商民主的独特优势,疑聚了发展合力。(3分)19.(1)①坚守中华文化立场,深挖湖湘文化的时代价值,传承和弘扬湖湘精神,筑牢文化传承发展的根基。(2分)②传承红色基因,质续红色血脉,把弘扬革命文化与传承优秀传统文化结合起来,丰富湖湘文化的内涵。(1分)③推动中华优秀传统文化创造性转化、创新性发展,运用现代科技手段赋能文化传承,推动湖湘文化与现代产业、现代生活深度融合。(1分)④立足时代之基,回答时代问题,打造优秀文艺作品,讲好湖湘故事,满足人民群众的精神文化需求。(1分)5加强文化交流传播,推动湖湘文化“走出去”,提升湖湘文化的国际影响力,增强文化自信。(1分)(2)①文创店销售假冒伪劣产品,以“商品售出概不退还”为由拒绝退货退款,侵犯了王某的知情权、公交易权和求偿权。(2分)②文创店应承担民事责任,向王某退还货款、支付赔偿金;同时承担行政责任,接受市场监管部门的行政处罚。(2分)(3)该推理正确。(1分)②这是一个必要条件假言推理,必要条件假言推理的规则是:否定前件就要否定后件,肯定后件就要肯定前件。(2分)件,肯定前件”,符合必要条件假言推理的逻辑规则,因此推理正确。(1分)20.示例:当今世界变局加速演进,全球性挑战层出不穷,中国始终以大国担当回应时代之问。中国坚定奉行独立自主的和外交政策,高举多边主义旗帜,反对霸权主义和强权政治,坚定维护世界和与稳定。中国积极推动构建人类命运共同体,高质量共建“一带一路”,践行共商共建共享的全球治理观,为全球发展注入动力,为破解全球难题贡献中国智慧,彰显了负责任大国的风范与担当。评分细则:主题明确,观点鲜明,紧扣“中国担当大国风范”核心,3分;论证充分,结合材料,准确运用当代国际政治与经济相关知识,学科术语规范,5分;逻辑清晰,结构完整,语言流畅,字数符合要求,4分;偏离主题、知识运用错误、字数严重不符的,酌情扣分。 (3)排除故障后,移动滑片P至某一点时,电压表示数如图乙所示为V,要想让小灯泡正常发光,则应将滑片向(选填“左"或“右”)移动一些;小灯泡正常发光时,电流表示数为0.3A,则小灯泡的额定功率为W。(4)完成上述实验后,还想测另一只额定电压为U,的小灯泡的额定功率,但发现电流表损坏。利用阻值已知的定值电阻R,设计了如图丙所示的电路,操作如下:①依据电路图连接好实物电路,闭合开关S、S,,调节滑动变阻器的滑片,使电压表的示数为U;②保持滑动变阻器滑片位置不变,闭合开关,读出电压表示数为U2;③小灯泡的额定功率P=(用U、U2和 R,表示)。电路处于加热状态,加热功率为18W;只闭合S,,电路处于保温状态。求:(1)加热时通过电阻R,的电流。(2)电阻R的阻值。(3)保温10min电路产生的热量。20.(6分)如图甲所示,电源电压保持不变,小灯泡L标有10V5W"字样,滑动变阻器R,允许通过的最大电流为1A,电流表量程为0~0.6A,电压表量程为0~15V。先只闭合开关S和S,将滑片P从最右端封b向左最大范围移动到a点;再断开开关S,,闭合开关S2,将滑片P从a点向右移动到最右端6,图乙是这两次实验过程中绘制的电压表示数U和电流表示数1的关系图象。求:(1)电源电压;,I/A(2)只闭合开关S和 S,,滑动变阻器R,的阻值变化范围;(3)只闭合开关S和S2,滑片P在a点时,定值电阻R的电功率。10U/V线九年级物理第4页(共4页)

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