傍晚6：52三59数学答案（郴州质量监测..四、解答题（本大题共5小题，共77分.解答应写出文字说明、证明过程或演算步骤）15.【解析】（1）依题意，随机变量X的可能取值分别为0.1.2，分P(X=0）=.P（X=1）=CCC4分随机变量X的分布列如下表：E（X）=0X-1×=+2×6分（2）设第一次摸到（i=1,2,3）号球的事件记为A，第二次摸到的是3号球的事件记为B.P(A），P(A）=P(A）P(B|A)=，P(B|A)=，P（B|A)=，10分于是P(B)=P(A)P(B|A）+P(A)P(B|A;)+P(A）P(B|A)++13分16.解析】（1)由等差数列的性质可得a十a:+a=3ag=27.所以a=9，……..2分设等差数列{a}的公差为d，由a2=3.as=a+3d，得d=2.3分所以a=u+（n-2）d=3+（n-2）×2=2n-1；4分（2）当n=1时，S=2h—2=b，得b=2，5分当n2时，由S=2h-2.得S=2h--2，两式相减S-S=（2b-2）-（2b1-2）=h,.得b=2b-（n>2），7分所以数列61是首项为2.公比为2的等比数列，所以b=2，所以数列b}的通项公式为6.=2”；8分（3）由（1）（2）得，c=（2n-1）·2"，…·9分因为M=1×2+3×2²+5×2²++（2n-3）×2-+（2n-1）×2"，2M,=1×2²+3×2²+…+(2n-3）×2"+(2n-1)×2,11分两式相减得：-M=1×2+2×2²+2×2²++2×2²-（2n-1）×2+12分-（2n-3）·214分所以M,=（2n-3）·2+1+6.15分17.【解析】（1）当α=1时.f（x）=lnx-x-2，2分当01时，f（x）1，欲证明lnx11分山品口口编辑转Word转图片保存更多三

傍晚6：52三59数学答案（郴州质量监测..四、解答题（本大题共5小题，共77分.解答应写出文字说明、证明过程或演算步骤）15.【解析】（1）依题意，随机变量X的可能取值分别为0.1.2，分P(X=0）=.P（X=1）=CCC4分随机变量X的分布列如下表：E（X）=0X-1×=+2×6分（2）设第一次摸到（i=1,2,3）号球的事件记为A，第二次摸到的是3号球的事件记为B.P(A），P(A）=P(A）P(B|A)=，P(B|A)=，P（B|A)=，10分于是P(B)=P(A)P(B|A）+P(A)P(B|A;)+P(A）P(B|A)++13分16.解析】（1)由等差数列的性质可得a十a:+a=3ag=27.所以a=9，……..2分设等差数列{a}的公差为d，由a2=3.as=a+3d，得d=2.3分所以a=u+（n-2）d=3+（n-2）×2=2n-1；4分（2）当n=1时，S=2h—2=b，得b=2，5分当n2时，由S=2h-2.得S=2h--2，两式相减S-S=（2b-2）-（2b1-2）=h,.得b=2b-（n>2），7分所以数列61是首项为2.公比为2的等比数列，所以b=2，所以数列b}的通项公式为6.=2”；8分（3）由（1）（2）得，c=（2n-1）·2"，…·9分因为M=1×2+3×2²+5×2²++（2n-3）×2-+（2n-1）×2"，2M,=1×2²+3×2²+…+(2n-3）×2"+(2n-1)×2,11分两式相减得：-M=1×2+2×2²+2×2²++2×2²-（2n-1）×2+12分-（2n-3）·214分所以M,=（2n-3）·2+1+6.15分17.【解析】（1）当α=1时.f（x）=lnx-x-2，2分当01时，f（x）1，欲证明lnx11分山品口口编辑转Word转图片保存更多三

未能按要求完成规定的写作任务。只写出个别要点，结构第一档1.能根据写作要求收集、准不完整，多数语句不完整或意满足基本标准即赋分（1~3分）备素材。思不明，语法和词汇错误很多、书写不规范。听力文稿1.听选答案第一节：听下面10段对话，每段对话后有一个问题，读两遍。请根据每段对话的内容和后面的问题，从所给的三个选项中选出最恰当的一项。1. W: What good weather! Pd like to enjoy the sunshine on the boat.M: Sounds great!Q:How is the weather today?2.W: Jack, you don't look well. What's the matter?M: I have a cold.Q:What's wrong with Jack?3.W:How beautiful those stones are!M: Thanks.I have collected them for two years.Q:How long has the boy collected the stones?4.W:Hi,Wu Tao,did you have fun during the Spring Festival?M:Yes.Our family went to Sanya. We had a relaxing time there.Q:Where did Wu Tao go during the Spring Festival?5.W:Which animal is the most popular in your country,Tim?M:I think it's the sheep. You can see a lot of sheep in the field and on the hill in our country.Q:Which animal is the most popular in Tim’s country?6. W: Excuse me, can you tell me the way to the library?M:Sure,it's a little far. From here,you can take No.308 bus.Q:Which bus can the girl take to the library?7.W: What do you hope to do in the future, Bob?M: I hope to pass the exam and get into a good senior high school. What about you, Julia?W:'d like to be an astronaut and go into space.Q: What's Julia's future dream?8.W:Is Dave as good at playing the guitar as his brother?M:No. They are skilled in different musical instruments. Dave is talented in playing the piano.Q:Who is good al playing the guitar?9.W:It's five o'clock. Do you know when the next bus comes?M: In about fifteen minutes.Q:What time does the next bus come?蒲城县九年级英语试卷A-答案-3（共4页）

5/10CAfew years ago, I bought Lego Taj Mahal(泰姬陵乐高积木）for my dad's birthday, hopingto combie his love for architecture with family time. ach evening, my dad and I gathered aroudthe large dining table to piece the model together, faced with thousands of tiny white pieces, eachThe evenings passed quickly, and the building rose before our eyes. We could see our effortsproducing good results, and as we turned to the boring task of ordering the colored bricks on thebuilding's floor, our conversation too took a turn. We were amazed by how complex the modelwas and its instrution book. We realized the book itself was a work of art, beautiful but alosurprisingly detailed and clear. I provided us with the comfort of certainty.We knew if we followedall the instructions, we would end up with a model that loked exactly like the picture on the box. Ifwe made a mistake, all we had to do was to repeat our steps and start again.Life, however, does not fit together so neatly and rarely gives us such straightforwardinstructions. We talked over our respective lives, decisions made, and actions and choices nevertaken. Dad refected on a life well lived, and I, in my mid-thirties, on the uncertain path that layahead. Here, we were the expert architects doing the assembling ( 组装), but out in the world, wewere the ones being assembled. We think we're in control, but our choices are shaped by forcesbeyond our control. In the face of uncertainty, we have to proceed, trusting both in the process andthe end result.Sometimes, on the days I return home, I go to the spare room to look at the completed Legomodel, which brings forth a sense of happiness and comfort. It reminds me that life is built slowly,with mistakes, an element of uncertainty and no instruction book. It shows that consideration,warmth and faith will result in a life wellived. Life itself is not about what we materially create orleave behind, but rather how we lived it.28. Why did the author buy the Lego Taj Mahal for his father?A. To decorate their dining room.B.To strengthen their family ties.C. To teach his dad about Indian culture... D. To improve his dad's architecture skills. 29. Which of the following best describes the author's experience of building the Lego model?A. Simple but tiresome.B. Boring and confusing.C. Complicated but rewarding.D. Challenging and discouraging.30. What does the author learn from assembling the Lego model?A. Life's uncertainty brings more excitement.B. Life should be planned and shaped carefully.C. Life seldom provides clear guidance.D. Following instructions guarantees success in life.高三英语第5页共10页CS扫描全能王3亿人都在用的扫描Ap一O

5/10CAfew years ago, I bought Lego Taj Mahal(泰姬陵乐高积木）for my dad's birthday, hopingto combie his love for architecture with family time. ach evening, my dad and I gathered aroudthe large dining table to piece the model together, faced with thousands of tiny white pieces, eachThe evenings passed quickly, and the building rose before our eyes. We could see our effortsproducing good results, and as we turned to the boring task of ordering the colored bricks on thebuilding's floor, our conversation too took a turn. We were amazed by how complex the modelwas and its instrution book. We realized the book itself was a work of art, beautiful but alosurprisingly detailed and clear. I provided us with the comfort of certainty.We knew if we followedall the instructions, we would end up with a model that loked exactly like the picture on the box. Ifwe made a mistake, all we had to do was to repeat our steps and start again.Life, however, does not fit together so neatly and rarely gives us such straightforwardinstructions. We talked over our respective lives, decisions made, and actions and choices nevertaken. Dad refected on a life well lived, and I, in my mid-thirties, on the uncertain path that layahead. Here, we were the expert architects doing the assembling ( 组装), but out in the world, wewere the ones being assembled. We think we're in control, but our choices are shaped by forcesbeyond our control. In the face of uncertainty, we have to proceed, trusting both in the process andthe end result.Sometimes, on the days I return home, I go to the spare room to look at the completed Legomodel, which brings forth a sense of happiness and comfort. It reminds me that life is built slowly,with mistakes, an element of uncertainty and no instruction book. It shows that consideration,warmth and faith will result in a life wellived. Life itself is not about what we materially create orleave behind, but rather how we lived it.28. Why did the author buy the Lego Taj Mahal for his father?A. To decorate their dining room.B.To strengthen their family ties.C. To teach his dad about Indian culture... D. To improve his dad's architecture skills. 29. Which of the following best describes the author's experience of building the Lego model?A. Simple but tiresome.B. Boring and confusing.C. Complicated but rewarding.D. Challenging and discouraging.30. What does the author learn from assembling the Lego model?A. Life's uncertainty brings more excitement.B. Life should be planned and shaped carefully.C. Life seldom provides clear guidance.D. Following instructions guarantees success in life.高三英语第5页共10页CS扫描全能王3亿人都在用的扫描Ap一O

洛阳强基联盟高二3月联考·物理参考答案、提示及评分细则纹间距变小，B正确，A、C、D错误2.C多普勒效应是由于波源与观察者发生相对运动，导致观察者接受到的波的频率发生了变化，A错误；波的反射发生在同一种介质中，所以波的赖率不变，波长和波速也不变，B错误；发生明显衍射的条件是，缝的宽度或障碍物的尺寸与波长相差不多或比波长小.C正确；在干涉现象中，振动加强点是指振幅最大的点，振动减弱点是指振幅最小的点，但是加强点的位移不是总比减弱点的位移大，D错误3.C发生全反射的条件是光由光密介质射向光疏介质且入射角大于或等于临界角，则n>ne·α小于某一值，C正确4.D由题图可知1s和3s时刻质点的速度大小相等方向相反，A错误；1s到2s时间内，质点速度向下，加速度向上，B错误；由题图可求出质点做简谐运动的表达式为y=2sin（0.5πt十0.5π）cm，D正确，C错误5.B对其中一车由动量定理有-Fi=0-mu，解得F=1000N，B正确6.D由图乙可知质点L的振动情况，该时刻质点L向y轴正方向振动，根据上下坡法或者平移法可知，该横波沿x轴正向，质点M加速度为十y方向，B错误；质点L只在平衡位置附近沿y轴方向上下振动，波传播时，质点不会沿x轴正方向移动，C错误mgzo，B错误；碰前，物块B静止，由力的平衡条件得mgsinα=kx，36的固有周期增大，固有频率减小，C错误；若摆长增大，单摆的固有周期增大，固有频率减小，共振曲线的峰将向左移动、D正确【高二3月联考·物理参考答案第1页（共4

柳州市2025届高三第三次模拟考试物理（考试时间75分钟满分100分）注意：1：请把答隶块写在答题卡上，否则答题无效。2、答题前，请考生务必将密封线内的项目填写清楚，密封线内不要答题。3.选择题，请用2B铅笔，把答题卡上对应题目选项的信息点涂黑。非选择题，请用0.5mm黑色宇迹签宇笔在答题卡指定位置作答。一、选择题（本大趣共10小题，共46分。第1~7题，每小题4分，只有一个选项符合题目要求，第8~10题，每小题6分，有多个选项符合题目要求，全部选对的得6分，选对但不全的得3分，有选错的得0分。）1．2024年10月15日，嫦娥六号从月球背面带回的样品完成鉴定，样品中2He的含量十分丰富，是核聚变的理想材料。He的质子数与中子数分别为A.2和3B.3和2C.1和2D. 2 和 12.某同学站在压力传感器上，开始时保持微蹲状态，之后完成了某些动作，所采集的压力F随时间：变化的图像如图。则该同学在压力传感器上完成的动作可能是↑FA．只有站起过程B．只有下蹲过程C.先站起之后下蹲D.先下蹲之后站起S3．中国的机器狗处于世界先进水平，如图所示，将物块放在机器狗的头部，物块与机器狗的接触面为水平面，当机器狗A．水平减速前进时，机器狗对物块的作用力小于物块的重力B.水平减速前进时，机器狗对物块的作用力大于物块的重力C.水平加速前进时，机器狗对物块的作用力等于物块的重力D.水平加速前进时，机器狗对物块的作用力大于物块对机器狗的作用力4.光伏玻璃具有商透光率低反射率的特点，一束光线以60°的入射角从空气中射到光伏玻璃上，反射光线与折射光线的夹角可能为A. 30°B. 60°C. 90°D.120°5.水杯接完热水后再拧紧杯盖，待杯内的水降温后就较难拧开。若接入大半杯水后，杯内气体温度为87℃，压强为Po，拧紧杯盖，杯内气体（视为一定质量的理想气体）被密闭，经过一段时间后，杯内温度降到27C，此时杯内气体的压强约为5299A.B.C.D.PPog Po29 Po6．哈雷彗星的运动轨道是一个以太阳为焦点的椭圆，其运行周期为N年，地球的公转轨道可视为圆形，哈雷彗星轨道的半长轴与地球公转半径之比为三A. N3B. N2C. N2D. Mj第1页/（共4页）

1、[学林教育]2024~2025学年度第一学期九年级第二次阶段性作业道德与法治D(部编版)化学A(广教版)试题1、宣城市2023-2024学年度高一年级第一学期期末调研测试英语答案1、宣城市2023-2024学年度高一年级第一学期期末调研测试政治试题

5/812.中国和斯里兰卡建交68年来，中国企业帮助斯方建成港口、公路、铁路、医院、水利、电力等设施。2025年1月15日，两国共同签署共建“--带一路"合作规划和农产品输华、社会民生、新闻广电等多项双边合作文件。两国真诚互助、世代友好的战略合作伙伴关系不断深入发展的历程中①始终坚持以高质量推进“一带一路”建设为重点②折射出中斯两国奉行多边贸易体制开展交流合作③极大改善斯方基础设施环境，有力带动当地就业④树立了大小国家友好相处、互利合作的发展典范A.①②B.①④C.②③D.③④13.老年人杨某无子女，在配偶去世后，由配偶之侄卢某照顾，二人经过公证签订意定监护协议。后杨某突发重疾，意识出现障碍。医院诊断杨某多器官衰竭；卢某提交视频光盘显示杨某无法独立进行意思表示；鉴定机构鉴定杨某系重度失能人员；当地居委会出具意见确认杨某意识不清，同意卢某担任其监护人。卢某遂向法院申请担任杨某监护人。本案中①若卢某尽到监护职责，则可在杨某去世后获赠其个人遗产②意定监护协议为双方当事人的真实意思表示，属合法有效③杨某和卢某可在居委会出具意见后继续协商调整协议内容④法院将支持卢某申请，卢某将管理杨某财产并安排其养老A.①③B.①④C.②③D.②④14.赵某以2000元的价格从王某处购买公母两只羊，当场完成全部价款及两只羊的交付。后王某提出想要继续租用公羊两个月进行配种，赵某同意后收取租金100元。租赁期间受超强台风影响，当地遭遇大暴雨，突发洪水致公羊被淹死。赵某向王某索赔1000元，王某拒不给付。据此分析①公羊交付后，赵某获得所有权并承担其毁损灭失风险②本案不适合使用口头合同，不利守约方追究违约责任③赵某收取租金时租赁合同成立，王某获得公羊使用权④突发洪水属于不可抗力，王某可以不用赔偿赵某损失A.①③B.①④C.②③D.②④15.某工厂数控机床突然无法正常工作，并胃出白烟。经过技术人员排查，发现了三处疑似损坏点：电路板、液压装置和电机。根据以下排查事实，可以推断出①损坏点是这三处中的一处或多处②如果电路板损坏，那么电机损坏③冒白烟处损坏，而冒白烟一定与温度过高有关④液压装置并没有出现温度过高的情况高三政治（一模）—5

5/812.中国和斯里兰卡建交68年来，中国企业帮助斯方建成港口、公路、铁路、医院、水利、电力等设施。2025年1月15日，两国共同签署共建“--带一路"合作规划和农产品输华、社会民生、新闻广电等多项双边合作文件。两国真诚互助、世代友好的战略合作伙伴关系不断深入发展的历程中①始终坚持以高质量推进“一带一路”建设为重点②折射出中斯两国奉行多边贸易体制开展交流合作③极大改善斯方基础设施环境，有力带动当地就业④树立了大小国家友好相处、互利合作的发展典范A.①②B.①④C.②③D.③④13.老年人杨某无子女，在配偶去世后，由配偶之侄卢某照顾，二人经过公证签订意定监护协议。后杨某突发重疾，意识出现障碍。医院诊断杨某多器官衰竭；卢某提交视频光盘显示杨某无法独立进行意思表示；鉴定机构鉴定杨某系重度失能人员；当地居委会出具意见确认杨某意识不清，同意卢某担任其监护人。卢某遂向法院申请担任杨某监护人。本案中①若卢某尽到监护职责，则可在杨某去世后获赠其个人遗产②意定监护协议为双方当事人的真实意思表示，属合法有效③杨某和卢某可在居委会出具意见后继续协商调整协议内容④法院将支持卢某申请，卢某将管理杨某财产并安排其养老A.①③B.①④C.②③D.②④14.赵某以2000元的价格从王某处购买公母两只羊，当场完成全部价款及两只羊的交付。后王某提出想要继续租用公羊两个月进行配种，赵某同意后收取租金100元。租赁期间受超强台风影响，当地遭遇大暴雨，突发洪水致公羊被淹死。赵某向王某索赔1000元，王某拒不给付。据此分析①公羊交付后，赵某获得所有权并承担其毁损灭失风险②本案不适合使用口头合同，不利守约方追究违约责任③赵某收取租金时租赁合同成立，王某获得公羊使用权④突发洪水属于不可抗力，王某可以不用赔偿赵某损失A.①③B.①④C.②③D.②④15.某工厂数控机床突然无法正常工作，并胃出白烟。经过技术人员排查，发现了三处疑似损坏点：电路板、液压装置和电机。根据以下排查事实，可以推断出①损坏点是这三处中的一处或多处②如果电路板损坏，那么电机损坏③冒白烟处损坏，而冒白烟一定与温度过高有关④液压装置并没有出现温度过高的情况高三政治（一模）—5