• 贵州省金太阳2026届高三学科核心素养训练(2.27)数学答案

    C.若⊥l,则α=2D.当α>0时,I始终不过第三象限【答案】ABD【分析】根据直线过定点、两直线行、直线的图像以及两直线垂直逐项计算判断即可,【详解】解:对于A,直线l2:α(x-2y+3y-1=0,由2台丝故A正确;[-(2a-3)-a² = 0对于B,若//l2,则有对于C,⊥l,则α-α(2a-3)=0,解得α=0或α=2,故C错误;对于D,故正确.故选:ABD10.已知数列{α,}的前n项和为S,=n²-7n+6,则下列说法正确的是(A. a,=2n-8B.S,取得最小值时n=3或46SD.的最小值为2√6-7asa6agaa28a2925【答案】BC【分析】给出n=1作为反例即可判断A,利用二次函数的性质即可判断B,利用裂项相消法判断C,注意到一定是有理数即可判断Dn【详解】对于A,由于α=S=1-7+6=0≠-6=2-8,故α,=2n-8对n=1不成立,故A错误;对于B,由二次函数性质知f(x)=x²-7x+6的开口向上,且对称轴为x:故当n=3或4时,2S,=n²-7n+6取得最小值,故B正确;对于C,因为S,=n²-7n+6,故对n≥2有αn=S-S-1=n²-7n+6-7(n-1)+6)=2n-8所以同时有a2sa292x44x648×50n(n+2)故C正确;2x44x648x5024850第5页,共15页

  • 贵州省金太阳2026届高三学科核心素养训练(2.27)物理试题

    得分评卷人12.(8分)得分评卷人13.(8分)联氏1.0=打点计时器小车纸带细绳一垫木(嘴有精码定滑轮实验台(1)加速度的大小a;的长木板(2)所需的升力大小F。10ma.回答下列问题:孔,启动打点计时器,轻推小车,小车拖着纸带开始运动。若纸带上的点迹分布(2)某次实验中,得到如下纸带。打点计时器所用电源频率为f,则打点的周期可表示为。O、A、B、C、D、E、F为连续打出的点,且相邻两点间的距离如图,则小车加速度可表示为a=(用xxx表示);(3)在研究加速度与合外力的关系时,保持槽码及小车的总质量不变,把细绳左端的槽码逐个逐次放在小车上进行实验,由实验数据作出的加速度a与细绳左端槽码的质量m关系的图像应为(选填正确选项下的字母)。VotatBDV3高一物理第5页(共8页)高一物理第6页(共8页)

  • 贵州省金太阳2026届高三学科核心素养训练(2.27)物理答案

    ·物理·参考答案及解析测试(四)功、能和动量一、选择题的上下方,C项错误;初始阶段满足机械能增1.B【解析】当汽车的牵引力等于阻力时,其速量E=Fe·h=3mgh,E-h图像是过原点的倾斜直线,之后机械能守恒,图线与横轴度达到最大值,则汽车受到的阻力大小为F一行,D项正确。答案解析网P_3.6X10N=9000N,A项错误;由图可答案解析网'Um403.D【解析】地球上不同望远镜观测同一天知.0~8s汽车做匀加速运动.此过程汽车的体,单位面积上接收的功率相同,所以P2一牵引力最大,当t=8s时,牵引力大小为F=5002P_3.6X105N=15000N,即汽车的牵引力U124镜能观测到此类天体需收集到的电磁波的总最大为15000N.B项正确;汽车在0~8s做匀功率的最小值为P,直径为100m望远镜和FAST能观测到的最远距离分别为L。和L24加速直线运动的加速度大小为a=m/s²=8500²P100)²P则P=π3m/s,由牛顿第二定律有F一F=ma,解得m=2000kg,C项错误;在8~28s的时间汽车L=5L,则N=在做变加速运动,此过程牵引力做的功为W=正确。答案解析网P△t=360×10²×(28-8)J=7.2X10°J,设此4.A【解析】若弹簧压缩至最短时,弹簧对轻过程的位移大小为x,根据动能定理可得杆的弹力小于等于轻杆与槽间的最大静摩擦力,则轻杆不会滑动,小球的重力势能全1W—Fx=mUmm,其中Um=22部转化为弹簧的弹性势能,即Epi=mg(h十40m/s.U=24m/s.解得x≈686m,D项x),h越大,弹簧的压缩量x越大,弹簧的弹错误。性势能越大,即可知h增大,Ep2大于Epi;若2.D【解析】根据u-t图线斜率的物理意义弹簧压缩时,弹簧对轻杆的弹力大于轻杆与0一t。时间内的斜率大小应该是撤去动力后槽间的最大静摩擦力,则轻杆会向下滑动,斜率大小的3倍,A项错误;根据x-t图像结当轻杆和小球的速度相等时,弹簧的弹性势合物体在0~to时间内的加速运动满足x=能达到最大,此时小球的重力等于弹簧的弹力,即mg=kx,不管h如何增大,当弹性势1X3gt,可知图像应该是曲线,B项错误;2能最大时,弹簧的形变量不变,弹簧的弹根据题意,物体在两个阶段的加速度大小分性势能不变,即E可能等于E。故选别为3g和g,但方向相反,应该分布在横轴!A项答案解析网11

  • 贵州省金太阳2026届高三学科核心素养训练(2.27)历史试题

    A.是教权与王权勾结的开始B.削弱了国王不的统治基础C.使教皇获得了更大的利益D.消除了教皇国王之间的矛盾6.幕府统治在日本历史上存在近700年。日本在这一特殊时期A.国家处于奴隶社会B.将军掌握国家实权C.天皇不再任命将军D.武士效忠自己国家7.“一屋宽且长,织机二百张。织工二百人,排列成长行。辛勤齐操作,笑声彻屋梁。”这是一位16世纪名叫约翰·温契康伯的英国人对一劳动场景的描述。这表明A.庄园经济得到强化B.租地农场迅速地发展C.手工工场已经出现D.近代工厂制度的建立8.1641年11月,英国议会通过了《大抗议书》,抗议封建暴政,要求各部大臣只对议会负责,不再向国王效忠,国王只是名义上的元首。该法律的颁布A.是资产阶级最早干涉国王的法律B.是英国资产阶级革命开始的标志C.标志着英国君主立宪制政体的确立D.激化了英国国王和资产阶级的矛盾9.在早期英法美资产阶级革命过程中颁布了《权利法案》《独立宣言》《人权宣言》,这些文件体现出的共同点是A.维护资产阶级根本利益B.确立了比较民主的政体的C.限制了封建国王的权力D.标志着新的国家的诞生这是因为他们都是华盛顿章西女王玻利瓦尔A.实现了国家独立的开国元勋B.亚非拉独立运动的杰出领袖C.抗击英国殖民者的杰出代表D.杰出的民族解放运动领导者会成员已达到100万人。该现象的出现是由于的B.英国加紧对外殖民扩张A.资产阶级统治力量正在削弱D.受到马克思主义的影响C.工业革命引发阶级矛盾对立题目补充完整感的原因是我左右B.英国殖民者采取分化的政策故A.殖民侵略者势力强大3D.缺乏统一指挥起义力量分散C.缺少人民群众的支持九年级历史试题卷第2页(共4页)

  • 贵州省金太阳2026届高三学科核心素养训练(2.27)历史答案

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  • 贵州省金太阳2026届高三学科核心素养训练(2.27)英语试题

    health care system as much as $5.5 billion each year.28.Why are the scientists at the University of Jyvaskyla mentioned in paragraph 2?A.To tell the acceptance of a special sport.B.To give the reasons of joining sports clubs.C.To show the popularity of sports facilitiesD.To call for more public participation in sports.When did the forestryindustry start to encourage sports participation?A.About 50 years ago.B.About 60 years ago.C.About 80 years ago.D.About 100 years agoB0.What does Hanna Vehmas say about the effort for workers'physical well-being?A.It is a waste of money.B.It brings in various benefits.C.It takes too-much time.D.It cuts workers'productivity.131.What is the best title for the text?A.How Can Finns Make Sports Part of Daily Life?B.Why Does Finland Have So Many Sports Facilities?C.How Has Finland Become the Healthiest Country?D.Why Do Employers in Finland Spend on Sports?DAs wildfires spread across Los Angeles,the J.Paul Getty Museum showed its strongdisaster readiness.With fire within six feet of the Getty Villa on January 7,the museum'sstrong protective actions became a great example of resilience.The Getty Museum's workers,working 24-hour by tumns,checked the hilltops aroundboth the Getty Villa and the Getty Center.The older Getty Villa,home to thousands of old andvaluable objects,is located in the Pacific Palisades,while the Getty Center in Brentwoodhouses famous artworks like Vincent van Gogh's Irises.Provided with fire extinguishers)the workers checked the grounds for fire,carefully protecting the museum's valuablecollections.The museum's survival against the fires was unusual among the extremely harmfuldamage that killed dozens and destroyed thousands of homes.With $9.1 billion and years ofexperience in fighting wildfires,the Getty Museum had used millions in fire protection[共6页

  • 贵州省金太阳2026届高三学科核心素养训练(2.27)英语答案

    ·英语·答案与解析Wall"to honor teachers and friends.The ideaText4答案解析网sparked excitement, and David suggestedM: Our manager announced that our companycombining it with his time capsule plan for ais opening another branch in Chicago thistangible connection to the past.John spokemorning. Did you hear about it?highlyoftheidea.W: Yes. I'm worried that some of us will beAs the ceremony approached,the classarranged to move there. I prefer to work inworked tirelessly, combining tradition withNewYork.答案解析网innovation.The digital museum becameeaText5答案解析网treasurebox of shared experiences,filled withW: I often mistake Jim for Bob. Can you tellphotos, videos, and heartfelt messages thatthem apart?答案解析网captured ourlaughterandstruggles.M: No. They look so much alike that evenMeanwhile, the time capsule beneath the oldtheirmother didn'tknowwhowaswhotree symbolized our hope for the future,sometimes when they were young.holding cherished items that represented ourText6答案解析网unique stories. On graduation day, the air wasM:Guesswhat,honey!答案解析网filled not just with nostalgia but also with theW:Whatis it?答案解析网promise of enduring connections.Tears wereM: I did all your shopping for you.mixed with smiles as we realized howfar weW: My shopping? How did you know what Ihad come.wantedtobuy?答案解析网听力录音文稿M: I saw the shopping list you left next to theText 1phone. I figured you were busy with yourM: I bought a computer online yesterday, butproject these days, so I wanted to help out.I no longer need the item.So I'd like toW: I really appreciate what you have done. Bycancel the order please.the way, I'll be leaving the office at theW:All of our orders from yesterdayhaveusualtimetoday.答案解析网already been sent off.You can return it toM:Good.I'm now heading to the kitchen tous onceyou receive it.startpreparingdinner.答案解析网Text2W: Thank you for your efforts, Sam.M:The children's hospital is hoping to raiseM: It's my pleasure, Jenny.moneyforanewbuilding.I thinkweText7答案解析网should do something to help them.W: Hey! Have you been watching any of theW:I agree. Why don't we make cakes and sellWorld Cup soccer matches?them in the town center this weekend?M: Well, I was watching until my favoriteText 3teamwasknockedoutof the firstround ofM: Hey, Jane. I know you are watchingplay.答案解析网cartoons,but I'd like to watch the newsW:Why?答案解析网at 5:00 p.m.M:Well,in the first match, two of their starW: Okay, Dad. It's 4: 45 p. m. now. Can Iplayers were out with severe injuries.watch the cartoon for a few more minutes?W: Well, every team is going to have playersThen we can change the channel.out with injuries.5

  • 贵州省金太阳2026届高三学科核心素养训练(2.27)化学试题

    18.(15分)甲磺酸阿帕替尼是我国自主研制的一种治步肿瘤的靶向药物,其合成路线如下。COO CHOH CH.O,CICIENO→HS0,△NaHcn40,HSO,△COOCH囚回回回0CwHN,0吗4,0.Cs0,NH,P3O3NHCH,ONaTEACOOCH,回已知:i.RC-oR'NH,H,O,CuSO,→RCNP20,ii.RNH-TEA R NHRNH,-R,CI→NHRH,ONa(1)B的名称是,C→D的反应类型是(2)反应条件X应选择(填序号)。A.KMnO/H'B.H/PdC.C2H,OH/NaOHD.HNO,、HSO/加热(3)E→F的反应方程式为(4)G中含氧官能团名称是(5)H的结构简式是H的同分异构体中,同时满足下列条件的结构简式为①含有3个苯环②核磁共振氢谱显示4组峰,且峰面积为6:6:6:1COOH(6)参照上述合成路线,设计用与化合物合成的路线(无机试剂任选)。柳州市2026届高三第二次模拟考武·化学第8页(共8页)

  • 贵州省金太阳2026届高三学科核心素养训练(2.27)化学答案

    14.利用黄铜灰渣(含有Cu、CuO及少量Zn、ZnO、FeO、Fe2O3)制CuSO4溶液的流程如图所示:稀硫酸足量Fe粉稀硫酸02、稀硫酸黄铜酸浸反应I反应Ⅱ反应Ⅲ→CuSO溶液灰渣一滤液Ⅱ滤液ⅢI滤渣I下列有关说法正确的是A.滤渣I的主要成分是Cu,与黄铜灰渣中Cu的质量一定相等C.“反应I”中涉及置换反应、化合反应D.“反应Ⅲ”中发生反应:2Cu+02+2H2SO44—2CuSO4+2H20二、非选择题:本题共4小题,共58分。15.(14分)研究物质的性质与转化具有重要意义。(1)在给定条件下,下列制备原理正确且涉及的物质转化均可一步实现的是(填标号)。Na,CO, BaCl, NaOH HClA.粗盐提纯:粗盐精盐高温HOB.大量制备漂白粉:CaCOCaO→澄清石灰水—→漂白粉通电点燃HOC.制盐酸:NaCl溶液>CI和H2>HCI→盐酸(2)铬及其化合物的部分转化关系如下:_HOH,OHSO2CrCl; iCrO²-->CrO²->Cr3+iv①CrO2-中铬元素的化合价为②以上转化过程中涉及氧化还原反应的有(填标号)。③反应ii的离子方程式为④若以1molCrCl为原料,经以上转化,理论上能吸收标准状况下S0,气体的体积为Lo为Fe+引l起中毒,本身被还原为NO气体。①酸性溶液中NO2氧化Fe+的离子方程式为②NaNO2能使酸性KMnO4溶液褪色,该过程中NaNO2表现出的性质是化学第5页(共8页)

  • 贵州省金太阳2026届高三学科核心素养训练(2.27)政治试题

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