模拟试题四

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2024年浙江省高考模拟卷学考测试物理核心考点试题(四)

2024年浙江省高考模拟卷学考测试物理核心考点试题(四)

2024年浙江省高考模拟卷学考测试物理核心考点试题(四)一、单选题 (共7题)第(1)题如图所示为一种常见的身高体重测量仪,测量仪顶部向下发射波速为v的超声波,超声波经反射后返回,被测量仪接收,测量仪记录发射和接收的时间间隔,质量为的测重台置于压力传感器上,传感器输出电压与作用在其上的压力成正比,当测重台没有站人时,测量仪记录的时间间隔为,输出电压为,某同学站上测重台,测量仪记录的时间间隔为t,输出电压为U,该同学的身高和质量分别为( )A .,B.,C .,D.,第(2)题如图为某一电场的电场线,M、N、P为电场线上的三个点,M、N是同一电场线上两点,下列判断正确的是()A.M、N、P三点中M点的场强最大B.M、N、P三点中N点的电势最高C.负电荷在N点的电势能大于在M点的电势能D.正电荷从M点自由释放,电荷将沿电场线运动到N点第(3)题很多相同的绝缘铜圆环沿竖直方向叠放,形成一很长的竖直圆筒.一条形磁铁沿圆筒的中心轴竖直放置,其下端与圆筒上端开口平齐.让条形磁铁从静止开始下落.条形磁铁在圆筒中的运动速率( )A.均匀增大B.先增大,后减小C.逐渐增大,趋于不变D.先增大,再减小,最后不变第(4)题如图所示,在和之间有大量相同带电粒子以同一速度沿水平方向射入以为圆心的圆形匀强磁场区域,磁场半径为R,该圆形磁场方向垂直纸面向外,与圆心在同一水平直线上,和间距离为,已知所有粒子均从点正下方的点射出圆形磁场区域,立即进入下方垂直于纸面向里的匀强磁场,并都能打到水平挡板的下表面,挡板的左侧紧贴点,已知下方磁场的磁感应强度是上方磁场的两倍,不计粒子重力及粒子间的相互作用。

则挡板下表面有粒子打到的区域长度为( )A.B.C.D.第(5)题如图甲所示,B、C和P是同一水平面内的三个点,沿竖直方向振动的横波I在介质中沿BP方向传播,P与B相距,B点的振动图像如图乙所示;沿竖直方向振动的横波II在同一介质中沿CP方向传播,P与C相距,C点的振动图像如图丙所示。

模拟题4答案

模拟题4答案

模拟试题四答案一、单项选择题1.当两种证券完全正相关时,由此所形成的证券组合( B )。

A.能适当地分散风险B.不能分散风险C.证券投资组合风险小于单项证券风险的加权平均。

D.可分散掉全部风险2.已知某证券的β系数等于2,则表明( D )。

A.无风险B.风险很低C.与金融市场所有证券平均风险一致D.比金融市场所有证券平均风险高3.贝他系数反映的是( B )。

A.公司的特有风险B.个别股票的市场风险C.整个股市的平均风险D.公司的经营风险4.某公司股票的β系数为2.0,无风险利率为4%,市场上所有股票的平均报酬率为10%,则该股票的期望报酬率为( C )。

A.8%B.14%C.16%D.20%二、多项选择题1.非系统风险又叫( AC )。

A.可分散风险B.不可分散风险C.公司特有风险D.市场风险2.下列各种风险属于系统性风险的是( ABD )。

A.宏观经济状况的变化B.国家货币政策变化C.公司经营决策失误D.税收法律变化3.导致债券到期收益率不同于票面利率的原因主要有( BC )。

A.平价发行每年付一次利息B.溢价发行C.折价发行D.平价发行到期一次还本付息4.与股票内在价值呈同方向变化的因素有(AB )。

A.年增长率B.年股利C.预期的报酬率D.β系数5..按照资本资产定价模型,影响股票预期收益的因素有( ABC )。

A.无风险收益率B.所有股票的市场平均收益率C.特定股票的β系数D.营业杠杆系数6.下列情况下,会引起证券价格下跌的有( AB )。

A.银行利率上升B.通货膨胀持续降低C.银行利率下降D.通货膨胀持续增长三、判断题1.当股票种类足够多时,几乎可以把所有的系统风险分散掉。

(错)2.β系数反映的是公司特有风险,β系数越大,则公司特有风险越大。

(错)3.证券组合风险的大小,等于组合中各个证券风险的加权平均。

(错)4.通货膨胀情况下,普通股比债券能更好地避免购买力风险。

(对)5.在计算长期证券收益率时,应考虑资金时间价值因素。

2023年湖南省长沙市初中语文学业水平考试模拟试题(四)(含答案)

2023年湖南省长沙市初中语文学业水平考试模拟试题(四)(含答案)

2023年湖南省长沙市初中语文学业水平考试模拟试题(四)(全卷总分120份考试时间:150分钟)一、积累与运用(共20分)学校组织同学们阅读《中国文化知识丛书》,同时开展了一系列的语文活动,请你积极参加,并完成下面的任务。

1.某同学阅读《神奇的汉字》后,做了以下归纳,请你帮他找出其中有错误的一项()(2分)A.应注意汉字中的一字多音现象,例如:缥(piāo)缈、缥(piǎo)碧。

B.大部分的形声字可根据声旁定读音,例如:斟(shèn)酌、映(yìng)衬。

C.应注意区别形近字,例如:“泻气”应为“泄气”,“儒养”应为“濡养”。

D.要注意成语中的一些特殊字形,例如:“迫不及待”不要写成“迫不急待”。

2.某同学读完《神奇的成语》后,写了下面语段,请你帮他选出空格处成语使用恰当的一项()(2分)中国的文化①,成语作为我们中华民族悠久历史文化的一部分,更是源远流长,这一特有的文化可谓是②了。

成语具有丰富的思想内涵,意义深远,比如一些成语故事的③,带给人们深深的思索。

A.①地大物博②熟视无睹③言外之意B.①地大物博②家喻户晓③不言而喻C.①博大精深②家喻户晓③言外之意D.①博大精深②熟视无睹③不言而喻3.读完《中国古代园林》后,某班同学写了读后感,下面是从部分同学作文中选出的句子,没有语病的一项是()(2分)A.因为这样的园林建筑似乎缺乏自然之趣,但是其雄伟、庄严的气势使人折服。

B.北京周围的山水既有北方的粗犷,又具南方的秀丽,这正是建造园林的好地方。

C.苏州园林是我国各地园林的标本,各地园林或多或少都受到苏州园林。

D.颐和园原来是清朝帝王的行宫和花园,是中国规模最完整的皇家园林。

4.“也就是在此不久”这句话是从下面介绍“中国古代数学”的语段中抽出来的,若还原的话,放哪一处最恰当?()(2分)春秋而后便到了战国和两汉,[甲]在这个时间段,诸侯国基本都完成了封建制度的完善。

[乙]此时是中国古代一次思想进步爆发时期,不论是哲学还是科学,都开始了百家争鸣的局面。

2023年普通高等学校招生考试模拟试题数学4(可编辑可打印)

2023年普通高等学校招生考试模拟试题数学4(可编辑可打印)

2023年普通高等学校招生考试模拟试题数学(四)本试卷共 4 页 ,22题 。

全卷满分 150分 。

考试用时 120分钟。

注意事项:1.答题前 ,先将自己的姓名 、考号等填写在试题卷和答题卡上 ,并将准考证号条形码粘贴在 答题卡上的指定位置 。

2.选择题的作答:选出每小题答案后 ,用 2B 铅笔把答题卡上对应题目的答案标号涂黑 。

写 在试题卷 、草稿纸和答题卡上的非答题区域均无效 。

3.填空题和解答题的作答:用签字笔直接写在答题卡上对应的答题区域内 。

写在试题卷 、 草稿纸和答题卡上的非答题区域均无效 。

4.考试结束后 ,请将本试题卷和答题卡一并上交 。

一 、选择题:本题共 8 小题 ,每小题 5 分 ,共 40分 。

在每小题给出的四个选项中 ,只有 一 项是符合题目要求的。

1.已知集合 A = (x l x 2 -3x -4>0},B = (x l - 2<x ≤a },若 A U B =R ,则实数 a 的取值范 围为A.[1,+o )B.(1,+o )C.[4,+o )D.(4,+o ) 2.设复数x 满足x (2-i ) =1+b i (b ∈R ) ,若 x 为纯虚数 ,则 x =A.-iB.iC.-5iD.5i 3.已知 tan a =2,则 cos 2a --的值为A.1 B.4 C.- 3 D.- 14.山东烟台某地种植的苹果按果径 X (单位:mm ) 的大小分级 ,其中 X ∈(80,100]的苹果为特 级 ,且该地种植的苹果果径 X ~N (85,25) .若在某一次采摘中 ,该地果农采摘了 2 万个苹果 , 则其中特级苹果的个数约为(参考数据:若 X ~N (以,G 2 ) ,则 P (以-G <X ≤以+G ) ~0.682 7, P (以- 2G <X ≤以+2G ) ~0.9545,P (以-3G <X ≤以+3G ) ~0.9973)A.3 000B.13654C.16800D.19946 5.数学家杨辉在其专著《详解九章算术法》和《算法通变本末》中 ,提出了 一 些新的高阶等差数 列 ,其中二阶等差数列是一个常见的高阶等差数列 ,如数列 2,4,7,11,16,从第二项起 ,每 一 项与前一项的差组成新数列 2,3,4,5,新数列 2,3,4,5 为等差数列 ,则称数列 2,4,7,11,16为 二阶等差数列 ,现有二阶等差数列(a n },其前七项分别为 2,2,3,5,8,12,17,则该数列的第 20 项为A.173B.171C.155D.1516.已知椭圆 C :+ =1(a >b >0) 的左 、右焦点分别为 F 1 ,F 2 ,A 为左顶点 ,B 为短轴的 一 个 端点 ,若l BF 1 l ,l F 1F 2 l ,l AF 2 l 构成等比数列 ,则椭圆 C 的离心率为 A. BC^ D.1+8^7.已知点 P 在棱长为a 的正方体 ABCD -A 1B 1C 1D 1 的外接球 O 的球面上 ,当过 A ,C ,P 三点 的平面截球O 的截面面积最大时 ,此平面截正方体表面的截线长度之和 L 为 A.(2+2^ B.(2+2^ C.(2+^ D.(2+^8.已知抛物线 E :y 2 =8x F 的直线1与圆 M 交于C ,D两点 ,交抛物线 E 于 A ,B 两点 ,点 A ,C 位于x 轴上方 ,则满足l AC l =l BD l 的直线1的方程为 A.x =1 B.x =2C.x - 2y - 2=0或 x +2y - 2=0D.x =2或 x - 2y - 2=0或 x +2y - 2=0二 、选择题:本题共 4 小题 ,每小题 5 分 ,共 20分 。

2023年上海市高考英语模拟试卷试题四(含答案)

2023年上海市高考英语模拟试卷试题四(含答案)

2023年全国普通高等学校招生统一考试上海高考英语模拟试卷I.Listening comprehension略II.Grammar and VocabularySection ADirections:After reading the passage below,fill in the blanks to make the passage coherent and grammatically correct.For the blanks with a given word,fill in each blank with the proper form of the given word;for the other blanks,use one word that best fits each blank.Diane Van DerenOn February19,2009,Diane Van Deren was one of a dozen runners taking part in the Yukon Arctic Ultra,a400-mile race across frozen tundra(苔原)in the middle of winter.Not a single woman(21)___________(complete)it ever.With temperatures of30degrees below zero and only seven hours of daylight each day,it's probably the(22)___________(tough) race in the world.But,then,there is no woman like Diane Van Deren.Twelve years earlier,Van Deren,a former professional tennis player,had a kiwi-size piece of(remove)___________to treat her epilepsy(癫痫).The operation was successful,but she noticed a strange side effect:she could run without stopping for hours.At the start of the Arctic Ultra,icy winds frozen Van Deren5s water supplies,so she had(24)___________to drink for the first hundred miles.She kept(25)___________(go)on with frozen fruit and nut bars.On the eleventh day,the ice(26)___________her feet cracked open and Van Deren fell up to her shoulders into a freezing river.She managed(27) ___________(climb)out but her soaked boots froze to her feet.Yet somehow through it all,Van Deren remained positive,(28)__________was perhaps helped by another curious byproduct of her operation."I have a problem with(29) _________is called short-term memory.I could be out running for two weeks,but(30) ___________someone told me it was day one of a race/"She jokes,“I'd say,Great,let's getstarted!”On February26,2009,exactly twelve years after her surgery,Van Deren crossed the finish line of the Arctic Ultra.She was one of eight finishers一and the first and only woman.Section BDirections:Complete the following passage by using the words in the box.Each word can only be used once.Note that there is one word more than you need.A.agreementsB.chatteringC.effortsD.feasiblyE.fulfillmentF.hardG.introduced H.morality I.persuaded J.seizedK.spoiledHere's to guilt-free flyingMaj a Rosen gave up flying a decade ago out of concern for its environmental impact. But when she became a mother and started hanging out with other parents,she didn't bring it up,even when the conversation turned to flying.It would have_____31_____the mood.Then in April2018,her home country of Sweden_____32_____a tax on aviation(飞行).The climate impacts of flying were on the evening news and the mood changed. Rosen_____33_____the moment.With her neighbor Lotta Hammar,she launched a campaign called"We stay on the ground",which has_____34_____10,000people to commit to avoid flights in2019.Kudos.But here's the_____35_____truth:in the grand scheme of things,barely anyone will follow suit.The_____36_____classes tend to have a lot to say about the eco benefits of avoiding meat,cycling and eating locally sourced food.But that_____37_____generally disappears when it comes to flying.We can't rely on international___38_____to stop aviation emission either.Yes,the UN has fixed up a deal to cap aviation emissions beyond2020.But it lacks real bite,allowing airlines to continue emitting carbon provided they offset(抵消)it.All this means we could really do with green tech riding to the rescue.Here,at least,there is a little good news.Even rather simple measures like freeing planes to fly in straighter lines could_____39_____cut carbon emissions.Hybrid(混合动力的)electric aircraft are also the pipeline.And we already know that planes can mix up to50per cent biofuels into their tanksand fly safely.It's time to redouble our_____40_____to make planes green.In the meantime,if you are still looking for a New Year's resolution,you might want to think about joining those 105000Swedes.III.Reading ComprehensionSection ADirections:For each blank in the following passage there are four words or phrases marked A, B,C and D.Fill in each blank with the word or phrase that best fits the context.In summarising the state of the planet—rising population,widespread conflict,one-sixth of the planet suffering extreme poverty and hunger,global warming一Jeffrey Sachs,author of"The Common Wealth、can paint a terrible picture.However,he's an_____41_____and believes that all of these problems can be overcome in relatively straightforward ways and at relatively little cost.That's because the root causes are interconnected and_____42_____ man-made.Take child morality(死亡).Perhaps surprisingly,the higher the child morality rate is,the higher the birth rate.This leads to a_____43_____population which puts a greater stress on already scarce resources,so farmers have to work harder to produce enough food for all, which means children are often put to work in the fields or at home.This,_____44_____, stops children getting the education which will allow them to learn,among other things,about better farming techniques to increase crop yields and provide more food to eat and sell.Sachs argues that the_____45_____of providing every child in poverty with an anti-mosquito bed net is a major first step.Malaria(疟疾)is a huge cause of death in children and the bed nets massively_____46_____infections.The fewer children that die of malaria,the more secure parents feel about their children surviving.The more secure parents feel,the fewer children they have,and so on,revising the_____47__trend just described.However,it is_____48_____a combination of measures at the same time that truly makes a difference:free school meals improve school attendance and health;supplying fertilisers to improve soil and better seeds provides even better harvests;basic health care and clean water supplies_____49_____more fatal diseases.These ideas are already being_____50_____implemented in over100African villages in underdeveloped regions.The cost of the proj ect is just$10per person per year,of which 50%comes from donors and the rest from a mixture of local and national governments and the villagers themselves.So if it's so_____51_____,why hasn't it been done before?What about all the aid that has been given to Africa and the underdeveloped countries of the world?Has it been lost to corruption(腐败)?Sachs argues that the real problem is not corruption,but the fact that rich governments have_____52_____such a lot,but actually given so little.They agreed to give 0.7%of national income in aid,but only five countries have met that_____53_____.He suggests current aid is$24billion per year,which translates as just ten dollars per person—not nearly enough to implement the_____54_____measures.So while Sachs sees an opportunity to end poverty forever,he also raises an _____55_____that this could be the last chance we have,'The longer we wait,the greater is the suffering and the larger the long-term costs?41.A.economist B.optimist C.expert D.opponent42.A.prospectively B.essentially C.thoughtfully D.refreshingly43.A.declining B.global C.booming D.local44.A.in turn B.by contrast C.on end D.with care45.A.truth B.principle C.solution D.statement46.A.transmit B.specify C.worsen D.reduce47.A.downward B.general C.modem D.previous48.A.describing B.reserving C.adopting D.protesting49.A.modify B.intensify C.prevent D.locate50.A.successfully B.hesitantly C.personally D.worthlessly51.A.popular B.simple C.hard D.strange52.A.spent B.promised C.learned D.featured53.A.requirement B.condition C.challenge D.target54.A.restricted B.standardized C.requested bined55.A.alarm B.objection C.amount D.instanceSection BDirections:Read the following three passages.Each passage is followed by several questions or unfinished statements.For each of them there are four choices marked A,B,C and D. Choose the one that fits best according to the information given in the passage you have just read.(A)I'm in Marrakech,the heart of Morocco at the base of the Atlas Mountains,with my son, Sam.He's eight.We've come here with Mohamed,a friend who owns a store in our New York neighborhood.We're regular customers at Mohamed's store,where Sam can often be found negotiating with his friend.When they're not bargaining,they're chatting about swords,or camels,or the desert."You need to come to Marrakech,"Mohamed told me.I'll show you around and teach Sam how to really get a bargain!”So here we are.We meet up with Mohamed over a cup of tea at a table outside the tiny Cafe ben Youssef, deep in the old city of Marrakech.We're sitting in an area bordering the stalls of the marketplace.Vendors(小贩)with carts offer freshly squeezed orange juice,others sell dates or figs.Nearby are the workshops that supply the goods to this world-famous market.Later,as we walk around,Mohamed begins the first of his bargaining tutorials for Sam. "Everything in Morocco is open negotiation,Sam.When you hear a price,the first thing you say is'Too much一bezqf and then walk away.""But what if I like it?"“When you see something you like,maybe a lamp,you ask about something else instead. Then,as you walk out,you ask,"And how much is that lamp?9as though you5d just noticed it and aren't really that interested in it."We turn a comer and are greeted with sweet-smelling orange blossoms."Don't always give an offer.Make them continue to lower the price.Oh,and wear something Moroccan:Mohamed continues,as we enter a fairly large shop.Most of the stalls in Marrakech specialize in one thing,but not this one.Decorative and lethal-looking swords hang beside soft hand-dyed fabrics;large camel bones covered in writing sit beside massive copper lamps. It is here that Sam spots a box.“Look,a treasure chest!”It's made of wood,and painted red and gold.He opens the lid,then closes it.“Cool."Then he spots a tall,cobalt blue,tear-shapedold perfume bottle."Four hundred dirham,”the shopkeeper pronounces.Fifty dollars.Sam says nothing.Whether he's too shy or is practicing Mohamed's bargaining technique,I can't tell.He eventually agrees to pay200dirham,about$24.rd say the bottle is worth$10,at most. Clearly,his negotiating skills need a little work."Just to get started,Dad,”Sam measures me as he pays for the bottle.56.According to Mohamed,people in Marrakech like__________.A.bargainingB.tradingC.drinking teaD.showing friends around57.What does Mohamed advise Sam to do when he finds something he likes?A.To look for something similar in another shop.B.To complain to the vendor about its high price.C.To conceal his real preference from the vendor.D.To ask the vendor about the price as soon as possible.58.What does the writer imply about Sam's first negotiating experience?A.It is far from successful.B.It costs Sam more than the money he pays.C.It reveals Sam's potential in negotiation.D.It shows that Sam is too shy for negotiation.59.Which of the following might be the best title of the passage?A.A Shopping Trip.B.The Charm of the MarketC.A Busy City.D.The Art of the Deal(B)The Man Who Ate his Boots is a fascinating account of expeditions that went wrong.The book examines the19th century search for a route to Asia by way of the Northwest Passage through the Arctic Ocean.Author Anthony Brandt describes the many attempts by both land and sea that ended in failure and tragedy,including the1845expedition led by Sir John Franklin.Brandt shows how these brave,yet sometimes foolish,explorers could have avoided starvation,frostbite,and even death if they had copied the survival techniques of the local Inuit people.Some of the more surprising details the book reveals include:IGLOOS The explorers,despite repeatedly watching the Inuit build igloos,insisted on using canvas tents.Tents freeze in sub-zero temperatures and give little protection to anyone inside them.If they had learned to build igloos,the explorers would have been warm even in the worst Arctic weather.SEALSKIN If the explorers had worn sealskin and furs like the Inuit,they wouldn't have suffered from the frostbite that was common among them,but rare among the Inuit.DOG TEAMS Why didn't the British use dog teams to pull their sleds?Pulling sleds themselves was a tradition among many explorers right into the early20th century It cost Scott and his men their lives on their return from the South Pole in1912.The British did get something right,however,when Captain Edward Parry grew salad vegetables in boxes on board his ship.It was known that fresh vegetables and fresh meat prevented scurvy(坏血病),although at that time the reason for this(vitamin C)had not been discovered.Parry's men wouldn't have been as healthy if they hadn't eaten the salads.60.In The Man Who Ate his Boots’the author mainly________.A.introduces some foolish explorersB.focuses on some unsuccessful expeditionsC.analyzes the Inuit people's survival techniquesD.explores the advances in equipment used for expeditions61.According to Anthony Brandt,what should the explorers have done?A.They should have learned more about how seals survived in cold water.B.They should have set up more canvas tents to keep themselves warm.C.They should have helped the Inuit people build igloos.D.They should have used dogs to pull the sleds for them.62.It can be inferred from the passage that________.A.Edward Parry found a way to prevent scurvy by accidentB.Edward Parry's successful voyage was a rare case at that timeC.Edward Parry was the first captain that grew salad vegetables on boardD.Edward Parry's men could have been more healthy if they took vitamin C(C)Everything we know suggests that the universe is unusual.It is flatter,smoother,larger and emptier than a"typical"universe predicted by the known laws of physics if we reached into a hat filled with pieces of paper,each with the specifications of a possible universe written on it,it is unlikely that we would get a universe anything like ours in one pick—or even a billion.The challenge that cosmologists face is to make sense of this specialness.One approach to this question is inflation―the hypothesis(假设)that the early universe went through a stage of fast expansion.At first,inflation seemed to do the trick.A simple version of the idea gave correct predictions for the spectrum of fluctuations in the cosmic microwave background.But a closer look shows that we have just moved the problem further back in time.To make inflation happen at all requires us to fine-tune the initial conditions of the universe.And unless inflation is highly tuned,it leads to a runaway process of universe creation.As a result, some cosmologists(宇宙学家)suggest that there is not one universe,but an infinite number, with a huge variety of properties:the multiverse.There are an infinite number of universes in the collection that are like our universe and an infinite number that are not.But the proportion of infinity to infinity is undefined,and can be made into anything the theorist wants.Thus the multiverse theory has difficulty making any firm predictions and threatens to take us out of the area of science.These other universes are unobservable and because chance dictates the random distribution of properties across universes,suggesting the existence of a multiverse does not let us get to anything about our universe beyond what we already know.As attractive as the idea may seem,it is basically a sleight of hand,which turns an explanatory failure into an apparent explanatory success.The success is empty because anything that might be observed about our universe could be explained as something that must,by chance,happen somewhere in the multiverse.We started out trying to explain why the universe is so special,and we end up being asked to believe that our universe is one of an infinite number of universes with random properties.This makes me suspect that there is a basic but unexamined assumption about the laws of nature that must be overturned.Cosmology has new questions to answer.Not just what are the laws,but why are theselaws the laws?How were they chosen?We can't just hypothesise what the initial conditions were at the big bang,we need to explain those initial conditions.Thus we are in the position of a computer program asked to explain its inputs.It is clear that if we are to get anywhere, we need to invent new methods,and perhaps new kinds of laws,to gain a scientific description of the universe as a whole.63.According to the passage,which of the following statements is true of our universe?A.There are several hypotheses about its early stage.B.There are more than one billion universes similar to ours.C.It is expanding at a greater speed that it did at the stage of the big bang.D.It is different from the predictions made according to the laws of physics.64.What does the writer imply about the hypothesis of inflation?A.It hasn't been challenged.B.It doesn't make much sense.C.It is by far the most reasonable approach.D.It is the simple version of a complicated idea.65.Which word in the passage is similar in meaning to the phrase"sleight of hand"(paragraph4)?A.processB.predictionC.trickD.infinity66.It can be inferred from the passage that the writer___________.A.believes the idea of the multiverse will help us to understand our universe betterB.argues there is a fixed proportion of universes like ours to those unlike oursC.holds computer programs can work better than humans in cosmologyD.thinks some laws of nature that we take for granted may be falseSection CDirections:Complete the following passage by using the sentences given below.Each sentence can be used only once.Note that there are two more sentences than you need.A.Unsurprisingly,when his customers heard about the jokes they didn't see the funny side and the share price of the company crashed.B.All I can say is that it's just as well I'm not famous!C.The same is not true for everyone,particularly if you are famous.D.What makes things worse for the famous is that these mistakes become even more widely publicised because of24-hour news channels and websites.E.This is the kind of thing many people might do privately when they get together with colleagues after work.F.As a result,what was private suddenly became public.Silly Mistakes Hit the HeadlinesWe have probably all had moments when we said the wrong thing.I certainly have. There was the time at university when I met a friend in a coffee bar after class and immediately started complaining about our tutor,who was called Dr Gray.I was going on and on about how miserable she was一strict,boring,unfriendly—and my friend wasn't really saying much.After a minute or so,she interrupted me and said,'Um,I think I should introduce you'.She then turned to this other student who I hadn't really noticed up till then and said,"This is Tracy.Tracy Gray'!Fortunately,the result of putting my foot in it was only an awkward moment and a stony silence.Maybe my friends thought a little less of me,maybe they thought I was an idiot,but no real harm was done.__________67__________Take Gerald Ratner.He was the multimillionaire owner of a chain of shops that sold cheap jewellery.In what was supposed to be a light-hearted speech to some fellow businessmen,he joked about the quality of some of his products.He said some earrings were 'cheaper than a sandwich,but probably wouldn't last as long'.Other products could be sold at such low prices because they were rubbish.__________68__________Ratner had to resign as director and shortly afterwards the company was taken over by a competitor.In some ways,Ratner could be seen as unfortunate in that he was in a semi-private meeting with friends and colleagues he was at ease with,but there happened to be a journalist there.__________69__________And with the rise of social media,there have been plenty of others who have been caught out by the increasingly vague boundaries between our private and public faces.For example,a group of flight attendants made jokes about the engines on their planes failing and complained about their airline and clients(客户).__________70__________Unfortunately,they did it publicly on Facebook and it led tothirteen of them being fired.IV.Summary WritingDirections:Read the following passage.Summarize in no more than60words the main idea and the main point(s)of the e your own words as far as possible.Cities in the SeaThey may be small,but they build big things!Coral polyps(珊瑚虫),which live in the warm,shallow parts of the Earth's oceans,are probably the biggest builders on the planet. Coral polyps turn calcium from seawater into a hard material called limestone.Slowly,they build up a hard skeleton(骨架)around their bodies.When polyps die,their skeletons remain. Young polyps attach themselves to the old skeletons and make new skeletons.Over time, weird and wonderful shapes are slowly built up into amazing coral reefs(珊瑚礁).Scientists sometimes think of coral reefs as underwater cities.A quarter of all known marine species live in reef habitats―there are nearly a thousand coral species.Reefs are also home to millions of sea creatures,like fish,crabs,turtles,and sharks.Humans don't live in coral reef cities,but we benefit from them.Reefs create jobs for people in the fishing industry and other related businesses.Coral reefs are also popular for divers一many countries benefit from the tourists that they stly,chemicals from reef creatures help scientists create new medicines,which help doctors treat different illnesses.Coral reefs are very important,yet we don't take good care of them.Environmental problems have already killed about twenty percent of the world's reefs.About half of the remaining reefs are dying,and experts believe all of Earth's coral reefs will be in danger by 2050.Why are the reefs in such trouble?For one thing,people catch too many reef fish and often damage the reefs—divers sometimes break off pieces of coral.Polluted water also causes problems because reef-destroying algae grows in dirty water.Even air pollution hurts coral reefs.Global warming causes warmer ocean water,which can cause polyps to lose helpful algae.Without that algae,coral turns white.This is called"bleaching”,and if it continues,the coral dies.V.TranslationDirections:Translate the following sentences into English,using the words given in the brackets.72.不努力一把,怎么知道人生会不会有更多的可能?(If)73.过去的三年里,这个曾经无人问津的小村庄吸引了大量游客。

模拟科目四全套考试题及答案

模拟科目四全套考试题及答案

模拟科目四全套考试题及答案一、选择题1. 驾驶机动车在高速公路上行驶时,最高时速不得超过多少公里?A. 80公里/小时B. 100公里/小时C. 120公里/小时D. 140公里/小时答案:C2. 机动车在道路上发生故障,需要停车检查时,应当开启什么灯?A. 近光灯B. 远光灯C. 危险报警闪光灯D. 示宽灯答案:C3. 驾驶机动车在没有中心线的道路上,应当靠哪一侧行驶?A. 左侧B. 右侧C. 中间D. 随意答案:B4. 驾驶机动车在夜间行驶时,遇到对方车辆使用远光灯,应当如何操作?A. 保持原速行驶B. 减速并靠边停车C. 使用远光灯回照D. 变换远近光灯提示对方答案:D5. 驾驶机动车在雨天行驶时,应当如何使用灯光?A. 开启远光灯B. 开启近光灯C. 开启雾灯D. 不使用灯光答案:C二、判断题6. 驾驶机动车在高速公路上行驶时,可以随意变更车道。

答案:错误7. 驾驶机动车在夜间行驶时,应当使用近光灯。

答案:正确8. 驾驶机动车在雾天行驶时,应当开启雾灯和危险报警闪光灯。

答案:正确9. 驾驶机动车在雨天行驶时,可以不使用任何灯光。

答案:错误10. 驾驶机动车在道路上发生故障,需要停车检查时,应当在车后设置警告标志。

答案:正确三、简答题11. 请简述在高速公路上行驶时,遇到紧急情况应采取哪些措施?答案:在高速公路上行驶时,遇到紧急情况应立即减速并开启危险报警闪光灯,根据情况选择靠边停车或寻找安全地带停车,并在车后设置警告标志,必要时拨打紧急救援电话。

12. 驾驶机动车在夜间行驶时,遇到对方车辆使用远光灯,应如何避免眩光?答案:在夜间行驶时,遇到对方车辆使用远光灯,应减速并变换远近光灯提示对方,同时尽量避开对方车辆的灯光,保持安全距离。

四、案例分析题13. 某驾驶员在高速公路上行驶时,因疲劳驾驶导致车辆失控撞向路边护栏,造成车辆损坏和人员受伤。

请分析此事故的原因及如何预防。

答案:此事故的主要原因是驾驶员疲劳驾驶。

4级模拟试题

4级模拟试题

4级模拟试题一、听力理解Section A1. 根据对话,男士为什么迟到了?A) 交通堵塞B) 闹钟没响C) 忘记时间D) 找不到地点2. 女士在对话中提到了什么活动?A) 看电影B) 去图书馆C) 参加派对D) 健身Section B3. 根据短文,哪个部门最近很忙?A) 市场部B) 财务部C) 人力资源部D) 研发部4. 短文中提到的项目预计何时完成?A) 一个月内B) 两个月内C) 三个月内D) 四个月内Section C5. 演讲者在演讲中主要讨论了什么主题?A) 环境保护B) 教育改革C) 科技发展D) 社会公平6. 演讲者提到了哪个国家作为例子?A) 美国B) 中国C) 英国D) 澳大利亚二、阅读理解Passage 1In recent years, the popularity of online education has surged. According to a recent survey, more than half of the students prefer online courses over traditional classroom settings. This trend has been attributed to the flexibility and convenience that online education offers. However, there are also concerns about the quality of education and the lack of interaction between students and teachers.Questions:7. What is the main reason for the surge in online education?A) Cost-effectivenessB) Flexibility and convenienceC) Better quality of educationD) Greater availability of courses8. What is the concern regarding online education?A) Technical difficultiesB) High costC) Quality of educationD) Lack of student participationPassage 2The use of renewable energy sources has been on the rise globally. Governments and private sectors are investing heavily in solar, wind, and hydroelectric power. Despite the initial costs, the long-term benefits of using renewable energy are significant. It not only reduces reliance on fossil fuels but also helps in reducing greenhouse gas emissions.Questions:9. What is the main advantage of renewable energy?A) Low initial costB) Long-term cost savingsC) High energy outputD) Wide availability10. What is the environmental benefit of using renewable energy?A) Increased biodiversityB) Reduced greenhouse gas emissionsC) Improved air qualityD) All of the above三、完形填空The internet has revolutionized the way we communicate and access information. It has made our lives more convenient and has opened up new opportunities for learning and business. However, with the growth of the internet, there are also concerns about privacy and security. It is important to be aware of the potential risks and take necessary precautions to protect our personal information.11. The internet has changed our lives in many ways, making them ______.A) more difficultB) more convenientC) less interestingD) more challenging12. As the internet grows, we need to be ______ about our privacy.A) concernedB) indifferentC) ignorantD) confused四、翻译将下列句子从中文翻译成英文:13. 随着科技的发展,我们的生活变得越来越便利。

民法学模拟试题及答案四打印版

民法学模拟试题及答案四打印版

《民法学》模拟试题及答案(四)一、选择题:1~30小题,每小题2分,共60分.在每小题给出的四个选项中,只有一项是符合题目要求的。

1.下列关于法人民事行为能力的说法中错误的是()。

A。

与法人民事权利能力享有的时间一致 B.与法人的民事权利能力的范围一致C。

由法人机关或代表人实现 D.不受法人的经营范围限制2.知识产权是一种().A.无形财产权B.所有权C.债权D。

诉权3.甲离开自己的住所下落不明已满5年。

根据我国法律规定,其配偶乙()。

A。

只能申请宣告甲失踪 B.只能申请宣告甲死亡C.应当先申请宣告甲失踪再申请宣告甲死亡D。

既可以申请宣告甲失踪,也可以申请宣告甲死亡4.物权在性质上是()。

A。

支配权B。

请求权 C.抗辩权 D.债券5.下列所附条件有效的是()。

A.如果一年前我的房子没有拆,我现在就把房子租给你B。

如果今年冬天我儿子不回家,我就把房子租给你C.如果你能帮我搞到毒品,我就把工程承包给你D.下次下雨时,我送你一把伞6.我国对于不办理登记的事业单位法人的设立原则采用()。

A。

特许主义B。

准则主义C。

行政许可主义 D.严格准则主义7。

下列选项中,属于主物与从物关系的是()。

A。

张某的锁和王某的门B。

张某的拖拉机和王某的拖犁C。

张某的汽车和修理汽车的工具D。

房屋和窗户8。

张某在一家百货商场购得“幸福”牌电饭煲一台,遗忘于商场门口,被李某拾得.李某拿至家中使用时,因电饭煲漏电导致发生爆炸,李某面部被灼伤。

李某遂向百货商场索赔,百货商场则以李某不当得利为由拒绝赔偿,则下列陈述可以成立的是()。

A.不法取得他人之物者应承担该物所致损害B.李某的损害赔偿权应以与致损事件相关的法律规定为依据C。

由李某对自己无合法根据占有物品的行为承担损害后果,符合公平原则D。

按照风险责任原则,张某作为缺陷商品的购买者应对李某的损害承担责任9.有关农村土地承包经营权的基本内容,下列表述错误的是().A。

承包经营权人的权利包括使用权 B.承包经营权人的权利包括收益权C。

数据库模拟试题4(含答案)

数据库模拟试题4(含答案)

模拟题4一、填空题(每空1分,共12分)1. 数据库是长期存储在计算机内、有组织的、可_ _的数据集合。

2. 构成数据模型的三大要素是__________、数据操作和数据完整性约束。

3. SQL语言支持关系数据库的三级模式结构,其中外模式对应于和部分基本表,模式对应于基本表,内模式对应于。

4. 分布式数据库是一组数据集,逻辑上它们属于同一系统,而在物理上分散在用计算机网络连接的多个场地上,并统一由一个______________________________管理。

5. 在关系数据库的规范化理论中,在执行“分解”时,必须遵守规范化原则:既要保持_________关系,又要具有________连接性。

6. 在数据库系统中,数据的完整性是指数据的、和。

7. 并发操作带来数据不一致性包括三类:丢失修改、和。

二、单选题(每空1分,共12 分)1. 关系数据库管理系统都是基于()理论。

A. Codd的数据关系模型B. 数据结构C. 计算机操纵系统D. 信息管理2. 元组关系演算表达式{t| R(t) ∧S(t)}表达的是()A. R∪SB. R∩SC. R-SD. S-R3. 在数据库中,与查询有关的是()A. 数据依赖B. 进程管理C. 索引D. 数据压缩4. 在关系模式R(U,F)中,如果X→U,则X是R的()A. 候选码B. 主码C. 超码D. 外码5. 语句 delete from sc 表明()A. 删除sc中的全部记录B. 删除基本表scC. 删除基本表sc中的列数据D. 删除基本表sc中的部分行6. 数据库设计阶段分为()A. 物理设计阶段、逻辑设计阶段、编程和调试阶段B. 模型设计阶段、程序设计阶段和运行阶段C. 方案设计阶段、总体设计阶段、个别设计和编程阶段D. 概念设计阶段、逻辑设计阶段、物理设计阶段、实施和调试阶段7. 关系笛卡尔积运算记号R×S,( )A. R为关系名,S为属性名B. R和S均为属性名C. R为属性名,S为关系名D. R和S均为关系名8. 在DB应用中,一般一条SQL 语句可产生或处理一组记录,而DB主语言语句一般一次只能处理一条记录,其协调可通过哪种技术实现()A. 指针B. 游标C. 数组D. 栈9. 下列说法中不正确的是()。

2023年广东省初中语文学业水平考试语文模拟试题(四)(含答案)

2023年广东省初中语文学业水平考试语文模拟试题(四)(含答案)

2023年广东省初中语文学业水平考试语文模拟试题(四)说明:1.本试卷共22小题,满分120分。

考试用时120分钟。

2.本试卷设有附加题,共10分,考生可答可不答;该题得分作为补偿分计入总分,但全卷最后得分不得超过120分。

一、积累运用(24分)1.默写古诗文。

(共10分。

答对一句得1分,满分不超过10分)(1)_____________________,从此替爷征。

(《木兰诗》)(2)_____________________,衣冠简朴古风存。

(陆游《游山西村》)(3)单车欲问边,属国过居延。

_____________________,_____________________。

大漠孤烟直,长河落日圆。

_____________________,_____________________。

(王维《使至塞上》)(4)_____________________,天涯若比邻。

_____________________,儿女共沾巾。

(王勃《送杜少府之任蜀州》)(5)唐太宗有一句名言“以人为鉴,可以知得失。

”由此我们可以联想到《〈论语〉十二章》中孔子的话:“_____________________,_____________________。

”(6)秋瑾在《满江红》中用“_____________________,_____________________”抒发了自己为国家、为民族忧患而心潮起伏的感情。

2.根据拼音写出相应的词语。

(4分)(1)我看见他戴着黑布小帽,穿着黑布大马褂,深青布棉袍,pán shān()地走到铁道边,慢慢探身下去,尚不大难。

(2)还在qiǎng bǎo()中的婴儿,就已开始担惊受怕。

(3)一个又一个大的四方竹纸本子,写满了密密麻麻的小楷,如qún yǐ pái yá()。

(4)有人是这样回答的:“富有创造力的人总是zī zī bù juàn()地汲取知识,使自己学识渊博。

2024年全国高考调研模拟试卷理综物理试题(四)

2024年全国高考调研模拟试卷理综物理试题(四)

2024年全国高考调研模拟试卷理综物理试题(四)一、单项选择题(本题包含8小题,每小题4分,共32分。

在每小题给出的四个选项中,只有一项是符合题目要求的)(共8题)第(1)题质量为M的小孩站在质量为m的滑板上,小孩和滑板均处于静止状态,忽略滑板与地面间的摩擦.小孩沿水平方向跃离滑板,离开滑板时的速度大小为v,此时滑板的速度大小为.A.B.C.D.第(2)题如图所示,每一级台阶的高度,宽度,将一小球从最上面台阶的边沿以某初速度水平抛出。

取重力加速度大小,不计空气阻力。

若小球落在台阶3上,则小球的初速度大小可能为( )A.1m/s B.2m/s C.3m/s D.4m/s第(3)题质量为1kg的物体以初速度v。

从固定斜面底端冲上斜面,物体在斜面上运动过程中的图像如图所示(g=10m/s2),下列说法正确的是( )A.此斜面与水平面夹角为37°B.2s内该物体重力势能变化的最大值为12.5JC.该物体在斜面上运动过程中机械能一定不守恒D.该物体在斜面上运动过程中合外力冲量为零第(4)题如图所示的水平轨道足够长,只有部分是粗糙的,其长度为,其余部分是光滑的,质量为1kg,长度为的粗细相同的匀质软绳静止在点的左侧(绳的右端在点),软绳与粗糙部分的动摩擦因数为,现用的水平向右的恒力作用在软绳上,软绳始终保持伸直状态且长度不变,重力加速度为,最大静摩擦力等于滑动摩擦力,则在软绳运动的过程中,下列说法正确的是()A.软绳先做匀加速后做匀减速运动B.软绳的左端能经过点C.软绳的最大动能为0.5J D.软绳克服摩擦力做功4.0J第(5)题如图所示,用同种细导线做成两个闭合单匝线圈,正方形线圈的边长与圆形线圈的直径相等,把它们放入磁感应强度随时间均匀变化的同一匀强磁场中,线圈所在平面均与磁场方向垂直,若正方形,圆形线圈中感应电动势分别用,表示,感应电流分别用,表示,则()A.B.C.D.第(6)题木星有4颗卫星是伽利略发现的,称为伽利略卫星,其中有两颗卫星的轨道半径之比约为。

内科护理学模拟试题及答案4

内科护理学模拟试题及答案4

模拟测试(四)一、选择题:(每题1分,共40分;以下各小题有且只有一个正确答案,请将正确答案填在答题卡上,错选或多选均不得分)1、纠正缺氧和二氧化碳潴留的先决条件是A合理氧疗B机械通气C使用呼吸兴奋剂D畅通气道2、阻塞性肺病最典型的体征是A呼吸运动减弱B紫绀C叩诊呈清音D桶状胸3、支气管哮喘急性发作时采用哪项措施可以缓解症状A吸入支气管舒张剂B脱离变应原C喷入糖皮质激素D口服氨茶碱4、氧疗有效的指征是A呼吸困难改善B紫绀减轻C心率减慢、活动耐力增加 D以上都对5、支气管哮喘的临床特征是A吸气性呼吸困难B反复发作的阵发性呼气性呼吸困难C反复发作的混合性呼吸困难D夜间阵发性呼吸困难6、烟草中主要的致癌物质是A一氧化碳B烟碱C苯并芘D亚硝胺7、心绞痛发作时疼痛部位一般在A剑突下 B胸骨后 C腰背部 D左肩8、心源性水肿最常见的病因是A左心衰 B右心衰 C高血压 D心肌肥厚9、心脏的正常起搏点是A窦房结 B房室结 C房室束 D普肯也纤维10、心肌的营养供应主要来自于A颈动脉 B头臂干动脉 C肱动脉 D冠状动脉11、十二指肠溃疡的疼痛节律为A 餐后2小时出现,进餐缓解B 餐后3-4小时出现,进餐缓解C 餐后1/2-1小时出现,至下餐缓解D 餐前30分钟出现,进餐缓解12、处理急性胰腺炎的最重要措施A 抑制胰液分泌 B抗菌治疗 C 手术治疗D解除疼痛13、消化性溃疡病人饮食宜少量多餐,其意义是A 减少对胃刺激B 中和胃酸C 减轻腹痛D 避免胃窦部过度扩张14、上消化道出血急诊内镜检查在出血后进行A 24—48小时B 48—72小时C 2小时D 12小时15、肝硬化最常见的并发症是A感染 B 原发性肝癌C肝肾综合征D上消化道出血16、尿量异常包括A多尿B少尿和无尿 C以上均是 D以上均不是17、肾病综合征主要表现是A 大量蛋白尿B 低蛋白血症C 水肿、高脂血症D 以上均是18、下列哪项是尿感最常见的感染途径A 血行感染B 淋巴感染C 上行感染D 直接感染19、正常人每天平均尿量约为A 1000mlB 1500mlC 2000mlD 2500ml20、每天尿蛋白含量持续超过——为大量蛋白尿A 1.5gB 2.0gC 3.0gD 3.5g21、按照血红蛋白浓度﹙HB﹚将贫血的严重度划分四度。

2024年山东省潍坊市初中学业水平考试模拟试题(四)

2024年山东省潍坊市初中学业水平考试模拟试题(四)

2024年山东省潍坊市初中学业水平考试模拟试题(四)一、单选题 1.计算:()342-⨯=( ) A .6-B .6C .8-D .82.如图所示的几何体的俯视图可能是( )A .B .C .D .3.已知数a 在数轴上的位置如图所示,则下列结论正确的是( )A .22a a -<-<<B .22a a -<-<<C .22a a -<-<<D .22a a -<-<<4.小颖和小亮参加数学实践活动,检验一个用断桥铝制作的窗户是否为矩形,下面的测量方法正确的是( )A .度量窗户的两个角是否是90︒B .测量窗户两组对边是否分别相等C .测量窗户两条对角线是否相等D .测量窗户两条对角线的交点到四个顶点的距离是否相等5.如图,乐器上的一根弦80cm AB =,两个端点A B ,固定在乐器面板上,支撑点C 是靠近点B 的黄金分割点,支撑点D 是靠近点A 的黄金分割点,则支撑点C D ,之间的距离为( ).(结果保留根号)A .()160cm B .()120cmC .()80cmD .()120cm6.如图是y 关于x 的一个函数图象,根据图象,下列说法不正确的是( )A .该函数的最大值为6B .当3x ≤时,y 随x 的增大而增大C .当1x =时,对应的函数值3y =D .当2x =和5x =时,对应的函数值相等二、多选题7.有一组被墨水污染的数据:4、17、7、14、★、★、★、16、10、4、4、11 ,其箱线图如下:下列说法正确的是( )A .这组数据的下四分位数是4B .这组数据的中位数是10C .这组数据的上四位数是15D .被墨水污染的数据中一个数是3,一个数是188.下列计算正确的是( )A B .33(2)8a a -=- C .842a a a ÷=D .22(1)(1)4a a ab -=+- 9.如图①所示(图中各角均为直角),动点P 从点A 出发,以每秒1个单位长度的速度沿A B C D E →→→→路线匀速运动,AFP V 的面积y 随点P 运动的时间x (秒)之间的函数关系图象如图②所示,下列说法正确的是( )A .6AF =B .4AB =C .3DE =D .10EF =10.如图,矩形ABCD 中,6AB =,8AD =,点P 在对角线BD 上,过点P 作MN BD ⊥,交边AD BC ,于点M N ,,过点M 作ME AD ⊥交BD 于点E ,连接EN BM DN ,,.下列结论正确的是( )A .EM EN =B .四边形MBND 的面积不变C .当1:2AM MD =:时,9625MPE S =△ D .BM MN ND ++的最小值是20三、填空题11.分解因式:296b ab a b -+=. 12.如图,点A 在函数()20y x x =>的图象上,点B 在函数()30y x x=>的图象上,且AB ∥x 轴,BC x ⊥轴于点C ,则四边形ABCO 的面积为.13.劳动委员统计了某周全班同学的家庭劳动次数x (单位:次),按劳动次数分为4组:03x ≤<,36x <≤,69x ≤<,912x ≤<,绘制成如图所示的频数分布直方图.从中任选一名同学,则该同学这周家庭劳动次数不足6次的概率是.14.如图,在扇形AOB 中,60AOB ∠=︒,OD 平分AOB ∠交»AB 于点D ,点C 是半径OB 上一动点,若1OA =,则阴影部分周长的最小值为.四、解答题15.(1)先化简,再求值:()()()2212121x x x +---,其中2x =-;(2)若关于x 的不等式组2151922x x ax x +>+⎧⎪⎨+≥-⎪⎩所有整数解的和为14,求整数a 的值. 16.如图,矩形ABCD 的对角线AC 与BD 相交于点O ,CD OE P ,直线CE 是线段OD 的垂直平分线,CE 分别交OD ,AD 于点F ,G ,连接DE .当4CD =时,求EG 的长.17.小王同学学习了锐角三角函数后,通过观察广场的台阶与信号塔之间的相对位置,他认为利用台阶的可测数据与在点A ,B 处测出点D 的仰角度数,可以求出信号塔DE 的高.如图,AB 的长为5m ,高BC 为3m .他在点A 处测得点D 的仰角为45︒,在点B 处测得点D 的仰角为38.7︒,A B C D E ,,,,在同一平面内.你认为小王同学能求出信号塔DE 的高吗?若能,请求出信号塔DE 的高;若不能,请说明理由.(参考数据:sin38.70.625︒≈,cos38.70.780︒≈,tan38.70.80︒≈,结果保留整数)18.小颖妈妈的花卉超市以15元/盆的价格新购进了某种盆栽花卉,为了确定售价,小颖帮妈妈调查了附近A,B,C,D,E五家花卉店近期该种盆栽花卉的售价与日销售量情况,记录如下:小颖将调查数据按照一定顺序做出了重新整理,并填写在下表中,(1)分析数据的变化规律,找出日销售量与售价间的关系.(2)根据以上信息,小颖妈妈在销售该种花卉中,①要想每天获得400元的利润,应如何定价?②售价定为多少时,每天能够获得最大利润?19.某中学九年级共有600名学生,为了了解学生信息技术操作水平,学校教学研究中心从中随机抽取了20名学生进行信息技术操作测试.【数据的收集】被抽取的20名学生的信息技术测试成绩(单位:分)如下:81 90 82 89 99 95 91 83 92 9387 92 94 88 92 87 100 86 85 96 【数据的整理与分析】(1)请按组距为5将数据分组,列出频数分布表,画出频数分布直方图;(2)①这组数据的中位数是______;这组数据的众数是. ②分析数据分布的情况(写出一条即可)_________;(3)若85分以上(不含85分)成绩为优秀等次,请预估该校九年级学生在同等难度的信息技术操作考试中达到优秀等次的人数.20.如图,点C 是以AB 为直径的O e 上一点,点D 是AB 的延长线上一点,在OA 上取一点F ,过点F 作AB 的垂线交AC 于点G ,交DC 的延长线于点E ,且EG EC =.(1)求证:DE 是O e 的切线;(2)若点F 是OA 的中点,4BD =,1sin 3D ∠=,求EC 的长. 21.如图1,小丽借助几何软件进行数学探究:第一步,画出矩形ABCD 和矩形EFGH ,点E 、F 在边AB 上(AB EF <),且点C 、D 、G 、H 在直线AB 的同侧;第二步,设置,AB EFm n AD EH==,矩形EFGH 能在边AB 上左右滑动;第三步,画出边EF 的中点O ,射线OH 与射线AD 相交于点P (点P 、D 不重合),射线OG 与射线BC 相交于点Q (点Q 、C 不重合),观测DP 、CQ 的长度.(1)如图2,小丽取4313AB EF m n ====,,,,滑动矩形EFGH ,当点E 、A 重合时,CQ =______;(2)小丽滑动矩形EFGH ,使得O 恰为边AB 的中点.她发现对于任意的m n DP CQ ≠=,总成立.请说明理由;(3)经过数次操作,小丽猜想,设定m 、n 的某种数量关系后,滑动矩形EFGH ,DP CQ =总成立.小丽的猜想是否正确?请说明理由.22.如图,已知抛物线2()40y ax bx a =++≠与x 轴交于点A (1,0)和B ,与y 轴交于点C ,对称轴为52x =.(1)求抛物线的解析式;(2)如图1,若点P 是线段BC 上的一个动点(不与点B ,C 重合),过点P 作y 轴的平行线交抛物线于点Q ,连接OQ .当线段PQ 长度最大时,判断四边形OCPQ 的形状并说明理由.(3)如图2,在(2)的条件下,D是OC的中点,过点Q的直线与抛物线交于点E,且∠=∠.在y轴上是否存在点F,使得BEFDQE ODQ2△为等腰三角形?若存在,求点F的坐标;若不存在,请说明理由.。

2024届湖北省高考冲刺模拟试卷物理试题(四) (2)

2024届湖北省高考冲刺模拟试卷物理试题(四) (2)

2024届湖北省高考冲刺模拟试卷物理试题(四)一、单选题 (共6题)第(1)题如图所示,半径为R的球面下方有一圆周ABC,该圆周与球面直径PM垂直,在该圆周上等分的三点位置分别固定电荷量为+q的三个点电荷A、B、C,且点电荷A与球心O的连线与球直径PM的夹角,在球面的最高点处固定另一电荷量同为+q的点电荷P,已知静电力常量为k,则下列说法正确的是( )A.点电荷P受到的库仑力大小为B.O点的场强竖直向下C.从P到O,电势一直降低D.沿着直径由O到M电势先降低再升高第(2)题电子显微镜通过“静电透镜”实现对电子会聚或发散使微小物体成像。

一种电子透镜的电场分布如图所示(截取其中一部分),虚线为等势面,相邻两等势面间的电势差相等,电子枪发射的电子仅在电场力作用下的运动轨迹如图中实线所示,是轨迹上的三点,若c点处电势为3 V,电子从a点运动到b点电势能变化了5 eV,则下列说法正确的是( )A.a点电势为7.5 VB.电子在b点的动能不可能为2.5 eVC.电子在b点加速度比在c点加速度大D.电子在电场中运动的最小速度一定为零第(3)题如图所示,某同学将质量相同的三个物体从水平地面上的A点以同一速率沿不同方向抛出,运动轨迹分别为图上的1、2、3。

若忽略空气阻力,在三个物体从抛出到落地过程中,下列说法正确的是()A.轨迹为1的物体重力的冲量最大B.轨迹为3的物体在最高点的速度最小C.轨迹为2的物体在最高点的动能最大D.三个物体单位时间内速度变化量不同第(4)题如图所示是乘客通过“刷身份证”进高铁站时的情景,将身份证靠近检验口,机器感应电路中就会产生电流,从而识别乘客身份,下列物理教材上小实验能说明这一原理的是( )A.B.C.D.第(5)题如图所示,用长度为l 的轻杆拴着质量为m 的小球(可视为质点),在竖直平面内做完整的圆周运动,圆周上A 点与圆心O 等高,CD 为圆的竖直直径,B 是圆周上A 、C 之间的某点.重力加速度大小为g ,不考虑空气阻力和一切摩擦.则小球做圆周运动的过程中()A .在圆周最高点时所受的向心力大小一定等于mg 且处于完全失重状态B .经过A 点时,杆对小球的弹力方向一定竖直向上C .经过B 点时,杆对小球的弹力方向一定由B 指向OD .经过最低点D 时,小球对杆的弹力方向一定竖直向下,大小至少为5mg第(6)题一长方体玻璃砖下部有半径为R 的半圆柱镂空,其截面如图所示,AD 长为2R ,玻璃砖下方0.3R 处平行放置一光屏EF ,现有一束平行单色光竖直向下从BC面射入玻璃砖,玻璃砖对该光的折射率为,不考虑光的二次反射,则( )A .光屏EF 上移,屏上有光打到的区域将变宽B.上图圆弧截面有光射出的弧长为C .为保证从AD射出的光都能被接收,光屏至少宽D .若光屏足够大,改用频率更大的平行光入射,光屏上被照射的宽度变大二、多选题 (共4题)第(1)题如图所示,电阻不计的两平行光滑金属导轨固定在竖直平面内,导轨上、下两端分别连接阻值为R 1=0.6Ω、R 2=1.2Ω的定值电阻,两导轨之间的距离为L =1m 。

四川省达州市2023年高中阶段学校招生统一考试暨初中学业水平考试 语文模拟试题 (四)(含答案)

四川省达州市2023年高中阶段学校招生统一考试暨初中学业水平考试 语文模拟试题 (四)(含答案)

四川省达州市2023年高中阶段学校招生统一考试暨初中学业水平考试语文模拟试题(四)说明:全卷总分120分,考试时间150分钟。

一、语言积累与运用(15分)1.下列词语书写和加点字注音全正确的一项是()(3分)A.粗制滥造就地取材隽.永(jùn)棱.角(lénɡ)B.前扑后继花枝招展礼聘.(pìn)归省.(xǐnɡ)C.断章取义自惭形秽氛.围(fèn)栈.桥(zhàn)D.鳞次栉比寻章摘句怠.慢(dài)盘桓.(huán)2.下列加点成语使用正确的一项是()(3分)A.看完贾玲的春晚小品《喜上加喜》,我和妈妈忍俊不禁....地笑了!B.莫雷高德鏖战七局,总比分4:3淘汰波尔,卷土重来....,晋级男单决赛,最终不敌国乒樊振东,收获世乒赛男单亚军。

C.“干惊天动地事,做隐姓埋名人”的“两弹一星”元勋们,为民族复兴甘守寂寞数十载、处心积虑....写春秋。

D.梁晓声的小说《知青》展示了特殊年代的年轻人特有的困惑和思索,文辞准确平实,一点也不矫揉造作....。

3.下列句子没有语病的一项是()(3分)A.中国式民主之所以在中国行得通、很管用,是因为在于中国的民主植根中国历史文化,符合中国国情。

B.国产精品剧层出不穷,主旋律作品“爆款”频出,一批品质上乘、口碑上乘的剧集提振了观众对国产剧。

C.特色果品从种植、采摘、包装、分拣到销售,每一个环节都需要有相应标准,在提高效率的同时稳定品质。

D.国内音乐剧市场日渐繁荣,原创音乐剧《在远方》《赵氏孤儿》《稳稳的幸福》《伪装者》等都收获了不错的口碑。

4.下列说法有误的一项是()(3分)A.“新时代的中国,为每一个青春追梦人搭建了展现自我的广阔舞台。

”此句的主干是:中国搭建广阔舞台。

B.唐宋八大家创作出了很多流传千古的文学作品,如韩愈的《马说》、柳宗元的《小石潭记》、欧阳修的《醉翁亭记》等。

C.“虽然今天我国粮食安全有了保障,但要居安思危,反对浪费粮食。

广东省2024届高三第一次学业水平考试(小高考)数学模拟试题(四)

广东省2024届高三第一次学业水平考试(小高考)数学模拟试题(四)

一、单选题1. 八角星纹是大汶口文化中期彩陶纹样中具有鲜明特色的花纹.八角星纹常绘于彩陶盆和豆的上腹,先于器外的上腹施一圈红色底衬,然后在上面绘并列的八角星形的单独纹样.八角星纹以白彩的成,黑线勾边,中为方形或圆形,且有向四面八方扩张的感觉.八角星纹延续的时间较长,传播范围亦广,在长江以南的时间稍晚的崧泽文化的陶豆座上也屡见刻有八角大汶口文化八角星纹.图2是图1抽象出来的图形,在图2中,圆中各个三角形(如)为等腰直角三角形,点为四心,中间部分是正方形且边长为2,定点,所在位置如图所示,则的值为()A .10B .12C .14D .162. 已知棱长为2的正方体中,E 为DC 中点,F 在线段上运动,则三棱锥的外接球的表面积最小值为A.B.C.D.3. 命题“,使得”的否定是( )A .,使得B .,使得C .,都有D .,都有4. 已知曲线:,则“曲线是双曲线”是“”的A .充分不必要条件B .必要不充分条件C .充分必要条件D .既不充分也不必要条件5. 在边长为的菱形中,为的中点,则的值为A.B.C.D.6. 如图所示,等边的边长为,,且.若为线段的中点,则()A .24B .23C .22D .187.已知,则的最小值是( )A.B.C.D.8. 某学校在校学生2 000人,为了学生的“德、智、体”全面发展,学校举行了跑步和登山比赛活动,每人都参加而且只参与其中一项比赛,各年级参与比赛的人数情况如下表:高一年级高二年级高三年级广东省2024届高三第一次学业水平考试(小高考)数学模拟试题(四)二、多选题三、填空题跑步人数a b c 登山人数xyz其中a ∶b ∶c =2∶5∶3,全校参与登山的人数占总人数的.为了了解学生对本次活动的满意程度,从中抽取一个200人的样本进行调查,则高三年级参与跑步的学生中应抽取A .15人B .30人C .40人D .45人9. 某网络销售平台,实施对口扶贫,销售某县扶贫农产品.根据2020年全年该县扶贫农产品的销售额(单位:万元)和扶贫农产品销售额占总销售额的百分比,绘制了如图的双层饼图.根据双层饼图(季度和月份后面标注的是销售额或销售额占总销售额的百分比),下列说法正确的是()A .2020年的总销售额为1000万元B .2月份的销售额为8万元C .4季度销售额为280万元D .12个月的销售额的中位数为90万元10.已知,分别为双曲线C :(,)的左、右焦点,的一条渐近线的方程为,且到的距离为,点为在第一象限上的点,点的坐标为,为的平分线则下列正确的是( )A.双曲线的方程为B.C.D.点到轴的距离为11.已知正四面体的棱长为,S 是及其内部的点构成的集合.若,集合,则T 表示的区域可以是( )A.B.C.D.12.记数列的前项和为,若存在实数,使得对任意的,都有,则称数列为“和有界数列”.下列说法正确的是( )A.若数列是等差数列,且公差,则数列是“和有界数列”B .若数列是等差数列,且数列是“和有界数列”,则公差C.若数列是等比数列,且公比满足,则数列是“和有界数列”D.若数列是等比数列,且数列是“和有界数列”,则公比满足四、解答题13. 已知角的终边过点,则=_________.14.已知函数为偶函数,则的解集为__________.15. 已知为椭圆内一定点,经过引一条弦,使此弦被点平分,则此弦所在的直线方程为________________.16. 已知椭圆方程为,过椭圆的的焦点分别做轴的垂线与椭圆交于四点,依次连接这四个点所得的四边形恰好为正方形.(1)求该椭圆的离心率.(2)若椭圆的顶点恰好是双曲线焦点,椭圆的焦点恰好是双曲线顶点,设椭圆的焦点,双曲线的焦点为与的一个公共点,记,,求的值.17. 芹洋湿地公园是以水为主题的公园,以湿地良好生态环境和多样化湿地景观资源为基础的生态型主题公园.欲在该公园内搭建一个形状为平面凸四边形的休闲、观光及科普宣教的平台,如图所示,其中(单位:百米),(单位:百米),为正三角形.建成后将作为人们旅游观光、休闲娱乐的区域,将作为科普宣教湿地功能利用、弘扬湿地文化的区域.(1)当时,求旅游观光、休闲娱乐的区域的面积;(2)求旅游观光、休闲娱乐的区域面积的最大值.18. 在中,角所对的边分别为,且.(1)求证:;(2)当取最小值时,求的值.19.在中,,.(1)求;(2)再从条件①、条件②、条件③这三个条件中选择一个作为已知,使存在且唯一确定,求边上中线的长.条件①:;条件②:的周长为;条件③:的面积为;20.如图,在五面体中,四边形为矩形,为等边三角形,且平面平面,.(1)证明:平面平面;(2)若,求二面角的余弦值.21. 已知函数.(1)若在上是减函数,求实数a的最小值;(2)若恒成立,求a的取值范围.。

【市级联考】浙江省杭州市2024届高三上学期模拟四高效提分物理试题(基础必刷)

【市级联考】浙江省杭州市2024届高三上学期模拟四高效提分物理试题(基础必刷)

【市级联考】浙江省杭州市2024届高三上学期模拟四高效提分物理试题(基础必刷)一、单项选择题(本题包含8小题,每小题4分,共32分。

在每小题给出的四个选项中,只有一项是符合题目要求的)(共8题)第(1)题如图所示,小车位于水平面上,其上顶板装有压力传感器。

车内弹簧处于竖直,弹簧上端把一个物块压在压力传感器上。

小车以加速度a向右做匀加速运动,小物块恰好不相对压力传感器滑动,此时压力传感器的示数为。

一段时间后,小车沿水平方向从水平面上飞出,落地前压力传感器的示数为,该过程弹簧一直处于竖直。

忽略空气阻力,重力加速度为g,则小物块与压力传感器间的动摩擦因数为( )A.B.C.D.第(2)题珠宝学院的学生实习时,手工师傅往往要求学生打磨出不同形状的工件。

如图所示为某同学打造出的“蘑菇形”透明工件的截面图,该工件的顶部是半径为R的半球体,为工件的对称轴,A、B是工件上关于轴对称的两点,A、B两点到轴的距离均为,工件的底部涂有反射膜,工件上最高点与最低点之间的距离为2R,一束单色光从A点平行对称轴射入工件且恰好从B点射出,则工件的折射率为( )A.B.C.D.第(3)题如图所示的电路中,为定值电阻,电压表和电流表均为理想电表,闭合开关S,滑动变阻器的滑片从b端向a端缓慢滑动的过程中,下列说法正确的是()A.电压表V示数先变小后变大B.电压表V示数一直变大C.电流表A示数一直变小D.电压表A示数先变小后变大第(4)题一个静止的质点,在0~4s时间内受到力F的作用,力的方向始终在同一直线上,力F随时间t的变化如图所示,则质点在( )A.第2s末速度改变方向B.第2s末位移改变方向C.第4s末回到原出发点D.第4s末运动速度为零第图甲为指尖般大小的一种电动机,由于没有铁芯,被称为空心杯电机。

这种新颖的结构消除了由于铁芯形成涡流而造成的电能损耗,具有体积小、灵敏、节能等特性,广泛应用在智能手机、平板电脑、医疗、无人机等方面。

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1. W: I thought the doctor said you should stay off you foot until the swelling goes down.
M: It just makes me uncomfortable to ask my friends to wait on me all the time.
A. She did.
B. Do you believe the doctor?
C. IS she right?
D. I can’t understand her.
2. W: Why didn’t you go to the hockey finals last weekend? .
M: Oh, come on. You know how sensitive I am to loud noise.
A. You should have felt ashamed not to go
B. You missed a great game
C. You must have gone mad not to go to it
D. You should have felt regretted at the game
3. M: Hi. I’d like to sign up for the film selection committee. It this the right place?
W: Yes, it is. There are a lot of fun people on that committee but you have to put in a lot of hours. .
A. Working for the committee is not easy.
B. Are you really difficult to be selected for the committee?
C. I hope your schedule isn’t too tight
D. The film committee is full of people.
4. M: I’d like to make an appointment with the doctor for tomorrow.
W: . The only time available to him is the day after tomorrow.
A. Unfortunately, he is completely booked
B. Unfortunately, he is totally taken away
C. He is unhappy to be totally booked
D. The doctor’s schedule is unfortunate
5. W: Excuse me, Prof. Davidson. But I was hoping to talk to you about my class project for economics.
M: . Why don’t you come and see me during office hours tomorrow?
A. I have a call to make in a moment
B. I have to finish my paper in a few days
C. I have a class in a few minutes
D. I have to hurry up to finish my meal
6. Speaker A: I hear you relatives are coming for a visit.
Speaker B: .
A. My Dad is
B. My father won’t come
C. My parents haven’t been here before
D. They’ll visit us
7. Passersby: ?
Local resident: Yes, there’s one near the end of the street. It’s behind the church.
A. Hello, sir. Where’s the road to the beach
B. Excuse me. Is there a parking anywhere around here
C. Excuse me. Which way can lead me to the nearest postal office
D. Which building is the Department of immigration, please?
8. M: This toothache is killing me.
W: If I am right, this is the third time you’ve had it this mouth.
M: You are right. .
A. It’s all right
B. It’ll be gone
C. I have no method
D. I’m fed up with it
9. Booking agent: Good morning. New Stars Booking Office.
Caller: .
A. I’d like to be able to have two for 7 tonight
B. I’d like to book 2 tickets for the Friday night show
C. I wonder when I have to return the books
D. I want to make a reservation for a single room, please
10. M: Can I borrow a pen, please? Mine has run out of ink.
W: .
A. Sure, take it
B. Here you are
C. Of course, take it away
D. Thanks anyway
11. Visitor: Thank you very much for your care while I am at Cambridge.
Host: . I’m glad you enjoyed the visit.
A. Never mind
B. No thanks
C. My pleasure
D. Goodbye
12. M: It’s terrible. I can’t make anything out of this lecture.
W: . I’m thinking of dropping the course.
A. Neither can I
B. I know nothing about it
C. It’s dead simple
D. The professor speaks well
13. Customer: This shirt seems a size too small for me. It’s an L.
Salesman: I’m really sorry. .
A. I think it’s not the right size
B. the color doesn’t suit you
C. It looks nice on you
D. It doesn’t come in XL.
14. W: Hello, Spring Hotel. May I help you?
M: ?
A. What kind of room do you think I like
B. I’m wondering if you have any vacancies tomorrow
C. Thanks for calling. Will I have a room ready for you
D. Have you made a reservation for a double-bed room
15. W: Can I help with the luggage? It looks a bit heavy.
M: .
A. Yes, they are full of books
B. Don’t bother. I can take care of it myself
C. Never mind. You don’t have to be so polite
D. Ok. Go ahead and do it
Key:
1-5 ABCAC 6-10ABDBA 11-15CADBB。

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