1、[天一大联考]高三2025届高考全真模拟卷(四)4政治(陕西专版)试题1、[天一大联考]高三2025届高考全真模拟卷(七)7(专版)英语(新高考)答案7. What concerns the woman about rock climbing2、河南省2024秋初中学业水期末质量检测试卷七年级数学试题1、河北省秦皇岛市某校2024-2025学年第一学期期中演练九年级化学试题1、山东省中昇2024-2025学年高三上学期10月检测生物试题3、陕西省西安市滨河学校2024-2025-1单元学情调查（收心）八年级开学考试文数试题1、陕西省2023~2024学年度第二学期七年级期末调研试题(卷)试题(地理)1、[学林教育]2023~2024学年度第一学期七年级期末调研试题(卷)语文B(部编版)4、2024年广东省初中毕业生学业考试仿真试卷(二)2试题(化学)1、学林2024年陕西省初中学业水考试·仿真摸底卷(B)化学试题1、学林2024年陕西省初中学业水考试·仿真摸底卷(B)生物答案1、百5、百师联盟·2025届高三开学摸底联考 物理试题1、百师联盟 2024届高三开年摸底联考历史(黑龙江省)试题1、百师联盟 2024届高三开年摸底联考地理(黑龙江省)试题1、百师联盟 20
(2)如图所示：以D为坐标原点，以DA所在直线为x轴，以DC所在直线为Y轴，以DD所在直线为=轴建立空间直角坐标系则三棱锥B-BEF的体积V=15xDD=5解得DD=33322则B(3,3.0)，B(3.3,3)，E(1.0,0)，F(0,1,0)，BB=(0,0,3)，EB=(2,3,3)，EF=(-1,1,0)[2x+3y+3z=0设面BEF的法向量为n，则n⊥EB，n⊥EF得n=（3.3,-5)-x+y=0n.BB5√43设直线BB与面BEF所成角为0，则sinθ=n·BB435√43所以直线BB与面BEF所成角的正弦值13分4316.【解析】（1)设事件A（i可取1，2，3，4）表示第i次抽到春季卡，B（j可取1，2，3，4）表示第j次抽到夏季卡，事件C表示抽3次即获奖，则C=BB2B，P(C)=P(B,BB)=P(B)P(BB)P(B|BB)，所以C'CP(B,B,B)=CCC23636(3)设事件D表示获奖，则D=(B,BB)U(A,BB;B)U(B,ABB)U(B,B2A,Ba)，且BBB，ABBB，BAB，B，B,BA,B为互斥事件，P(D)=P(B，BB)+P(A,BB;B)+P(BAB;B)+P(B，BA,B)，由(1)P(B,BB)=136CCGCP(ABBB)=C6C6C6C6272CCC2P(BABB)=CCC3654CCCCP(B,BAB)=1151236621611.151P(D)=.10分36725421612
29.What sets food forestry apart from community gardening？It'sa catch-22 situation:The wearable device may help you better manage yourA.lt belongs to private sections.chronic heart condition,but wearing it could make you anxious -which is bad for thoseB.It continues with active maintenanceconditions.C.It has more traditional gardening practices.32.What is the main idea of the second paragraph?D.It provides free access to the public.A.Usage of personalized health data.30.What is implied in Liz's words about BFFC?B.Benefits of wearing wearables.A.Its main project.B. Its management rules.C.How to manage health condition at home.C. Its basic ideas.D.Its consequence evaluationD.When to seck medical attention.31.What is the volunteers’way of weeding like?33.What can we infer from the study？A.SustainableB.Laborious.C.Efficient.D.Destructive.A.About 89 people were healthy.DB.Wearables monitor people's condition accurately.Wearable trackers and monitors (such as smart watches) are increasingly popular andC.About 35 people experienced intense anxiety.sophisticated.D.Wearables can make people's condition worseWearables are playing an increasing role in managing and detecting conditions likeatrial fibrillation（心房颤动），themost common heart rhythm problem.For many people，A.A dilemma.B.A reality.C.A category.D.A phenomenon.the sense that they are receiving reliable, objective and personalized health data can35.What might be a suitable title for the text？encourage feelings of confidence，safety and assurance, especially when combined withA.Digital Devices Are Irreplaceable in Lifesymptom trackers or patient diaries.This may allow patients to self-manage theirB.Being Monitored Is Good for Our Healthcondition at home with their families，rather than spending time in hospital-reducingC.Wearables Are Like the Coin with Two Sidesanxiety and stress. In a clinical setting. data may also encourage patients to take part inD.Wearables Lead People to be More Anxiousshared decision-making.Interpreting health data together with doctors or other health-care第二节（共5小题；每小题2.5分，满分12.5分）professionals,they can develop goals and action plans, including when to seek help, and阅读下面短文，从短文后的选项中选出可以填人空白处的最佳选项。选项中有两项为when to go to hospital.Patients who understand their condition tend to report fewer atrial多余选项。fibrillation symptoms.In ancient times， the more information our ancestors had， the more likely they wereHowever,a study examined the behavior and well-being of 172 people with atrialto survive. However, nowadays, this is the first time in history that humans have beenfibrillation over a nine-month period.It found the 83 people who used wearables toexposed to such a constant flow of information.While it’s important to stay informed， toomonitor their condition were more worried about their symptoms and treatment，with onemuch information can make us feel confused and anxious.As we all know, too many high-in five experiencing “intense anxiety”. Chronic anxiety can contribute to stress， burnoutcalorie foods can lead to obesity.36and poor physical health，which in turn can exacerbate （加剧） heart conditions.We're not just seeking relevant information to increase our chances of survivalSome people also describe being a “prisoner of the numbers”. They feel they “need toanymore.We fallinto rabbit holes，scroll （滚屏）our feeds mindlessly，and watch videokeep checking the device to know how they were doing， leading to the device dominatingafter video by clicking on the recommended links.37And we have lost control overtheir lives”,The volume and frequency of notifications (通知），alarms and vibrations fromthe content we consume. Just as you try to eat healthily to improve your. physical health,wearable devices can be overwhelming and make people worry about their health.going on an information diet is a way to control what you consume to takecare of yourInformation overload can also discourage self-management，with notifications insteadmental health.Here are some simple ways to start an information diet to break theprompting people to seek health advice more often than they otherwise would.information addiction英语试题（一）（共12页）第7页英语试题（-）（共12页）第8页
Text4W:Mark, we are going to be away for one week. I am worried about our dear pet.Who will takegood care ofit?M: Let me see.Sue will take a week off, but she is going to visit her grandparents. Oh, that's it.My cousinSandy!She is free now.She can helpwith it.Text5M: Karen, guess what! I got the very last record I needed for my opera collection today.W:Wow, congratulations!You realized your dream at last.M:Yeah.I've been collecting these records since I was a kid.This calls for a celebration.Come on.Let's go out and have someItalian food.My treat.Text6M: What can I do for you,madam?W: I didn't order this.M: I'm sorry.I made a mistake.This isTable 9's order. I'mvery sorryW: That's okay. It's pretty busy right now.M: Thanks for your understanding.W:What about my order?M: I'll check on your order right now.You have towait 15-20 minutes,madam.W: Please do it a bit faster if possible.I'm in a hurry.M: I am trying my best.Text7M:Hello,can I speak to Mrs.Wilson,please?W: Speaking.M: Hello,Mrs.Wilson,this is Royfrom Martin Plumbing.I'm sorry to inform you that I won’t beable to stop by this afternoon because I got an emergency call five minutes ago about a pipebursting.W: Oh my god!Thank youfor telling me.When will you be available to come by and take a lookat my pipes?M: I will be free tomorrow afternoon.Does that work out foryou?W: Yes, that'll be fine.Also, please remember to use the back door.My front stairs need to berepaired.Text 8W: Good morning,FarawayFlights.How canI helpyou?M:Hello,this isSteveLau.Id like to speak toMr.Tucker,please.W: Ah,Mr.Lau,OK,I'll put you through. One moment,please...I'm sorry.I'm afraid he istalking with someone else.His line is busy.M: Well, the reason I'm phoning is to make an appointment for my interview with him this week.W: Ohyes,I know about that. I have Mr.Tucker's diary here.Sowould you like tomake anappointment now?M:Yes.Will Thursday morning suit him?第5页（共6页）263748
宇宙速度为武小大更晶kgRngR2kgR2ngRAB.、如图所示，在离地面高h的O处固定一点光源，其正前方水距离为L处竖直放置一mv2v。2hA.OV10/s.01.020C.影子做匀加速直线运动，加速度大小为g单色激光自球冠右表面的A处沿半径AO方向入射，通过透明介质后，光线与水中心轴OC交于P点，PB间的距离为6A.该光线从球冠左表面出射时的折射角为53°BRB.该光线在透明介质中的折射率为！C.该光线在透明介质中传播的时间为D.若该光线从透明介质的左侧面内任意一点水向右入射，均A2可从右侧球面出射7.如图所示，光滑水面上放置质量均为m的两块木板，是其上分别有质量均为2m的机器人，两机器人间用一不可伸长的轻绳相连。现用水拉力F拉其中一块木板，使两机器人和两木板以相同加速度一起运动，机器人与木板间的动摩擦因数为μ，最大静摩擦力等于滑动摩擦力，8重力加速度为g，则轻绳对机器人的最大拉力大小为Fml6μmgC3μmgA. 3μmg3μmgB.C.a5(高三物理试题第2页(共8.页)
22:39 4553%14.(13分)解：(1)离子在加速电场中由动能定理有qU=mu²-0(2分)(1分)物理参考答案及评分标准第4页(共6页)(2)离子在磁场中做匀速圆周运动，由牛顿第二定律有quB=m(2分)由几何关系知R=r(2分)解得B=√q(3)离子进人正方体abcd－a'b'c'd'匀强电场区域做类抛运动有垂直电场方向l=ut(1分)沿电场方向gE=ma(1分）=αt²(1分)解得E=(2分)15.(16分)解：(1)小物块A离开水轨道后刚好能从C点切入圆弧轨道做圆周运动有解得uc=3m/s物块A从C到D 过程机械能守恒有mAuc²+mAg(2R)=mAun²(1分)物块A在D点处由牛顿第二定律Fx-mAg=mA%(1分)解得:F=60 N(1分)(2)由rt 图像可知:爆炸后瞬间物块A的速度大小为vA=5 m/s(1分)物块A在水轨道上运动的时间为t=0.40 s爆炸后物块 A在水轨道上运动过程由运动学公式及牛顿第二定律有Uc=UA-at(1分)μmAg=mAa(1分)解得μ=0.5(1分)(3)物块 A、B 爆炸过程,由动量守恒定律有mAUA—mBUB=0(1分)解得uB=10m/s物块B在斜面轨道向上运动过程有mBgsin 0十μmBgcos 0=mpaz(1分)解得a2=10 m/s²物理参考答案及评分标准第5页(共6页)=5 m>3.2 m(1分)故物块B通过E点有两种情况：①物块B沿斜面上升阶段通过E点时：s=-a²(1分)解得t=0.400 s或t=1.60 s(舍去)(1分)②物块B沿斜面下降阶段通过E点时：上升过程的时间t==1 s(1分)
22:39 4553%14.(13分)解：(1)离子在加速电场中由动能定理有qU=mu²-0(2分)(1分)物理参考答案及评分标准第4页(共6页)(2)离子在磁场中做匀速圆周运动，由牛顿第二定律有quB=m(2分)由几何关系知R=r(2分)解得B=√q(3)离子进人正方体abcd－a'b'c'd'匀强电场区域做类抛运动有垂直电场方向l=ut(1分)沿电场方向gE=ma(1分）=αt²(1分)解得E=(2分)15.(16分)解：(1)小物块A离开水轨道后刚好能从C点切入圆弧轨道做圆周运动有解得uc=3m/s物块A从C到D 过程机械能守恒有mAuc²+mAg(2R)=mAun²(1分)物块A在D点处由牛顿第二定律Fx-mAg=mA%(1分)解得:F=60 N(1分)(2)由rt 图像可知:爆炸后瞬间物块A的速度大小为vA=5 m/s(1分)物块A在水轨道上运动的时间为t=0.40 s爆炸后物块 A在水轨道上运动过程由运动学公式及牛顿第二定律有Uc=UA-at(1分)μmAg=mAa(1分)解得μ=0.5(1分)(3)物块 A、B 爆炸过程,由动量守恒定律有mAUA—mBUB=0(1分)解得uB=10m/s物块B在斜面轨道向上运动过程有mBgsin 0十μmBgcos 0=mpaz(1分)解得a2=10 m/s²物理参考答案及评分标准第5页(共6页)=5 m>3.2 m(1分)故物块B通过E点有两种情况：①物块B沿斜面上升阶段通过E点时：s=-a²(1分)解得t=0.400 s或t=1.60 s(舍去)(1分)②物块B沿斜面下降阶段通过E点时：上升过程的时间t==1 s(1分)
10:00淘2025年高三诊断考试化学..2025年兰州市高三诊断考试化学试题参考答案及评分标准、选择题：本题共14小题，每小题3分，共42分题号12345答案DBCDABD题号101213答案CABDC二、非选择题：本题共4小题，共58分。15.（14分，除标注外，每空2分）（1）提高反应速率，增大浸取率(2）Fe(OH)33~4.22Fe2++H2O2+4NH3+4H2O=2Fe(OH)（3）2H20-4e=O2↑+4H+（4）4（1分）分液（1分）萃取剂I难溶于水，且能与16.（15分，除标注外，每空2分）（1）托盘天、药匙抽气，减小吸滤瓶、安全瓶中的压强加快过滤速度取最后一次洗涤滤液于洁净的试管中，加入盐酸酸化的氯化钡溶液，若无白色沉淀生成，则说明己洗涤干净（其他合理答案也可）（2）防止草酸分解（3）2KHC2O4+CuO=50°℃=K2[Cu(C2O4)2]+ H20 洗去晶体表面杂质和水分，减少洗涤本溶解造成的产物损失，加速晶体干燥。(4）Cu2017.（15分，除标注外，每空2（1）+90.2kJ-mol-l(3）COOH*-+2H"+OH"（或H20=H*+OH*）（4）0.01MPa（7）T500K时，反应已达衡，随着温度的升高，反应衡逆移，甲醇产量降低。(2)NO（3）还原反应（4）缩放：100%2CHOHOHCH(5）7H;CCH和H-CHOH第1页共1页W口口编辑转Word转图片保存更多0
10:23 4G 预览www.weiyun.com103.15kPa2025年中考安徽名校大联考试卷（·化学参考答案及评分标准第1页共2页1/2二、非选择题（本大题包括5小题，共28分。）13．（5分，除标注外每空1分）②TiO2+2C+2CI,高温TiCl4+2CO（2分）（1）①导电性（2）有机物(3）-114．（6分，除标注外每空1分）（1）分液漏斗（2）HC2O4HO+CO↑+CO2↑（2分）（3）吸收二氧化碳观察到D中黑色粉末变红即可证明生成物中含有一氧化碳（4）增加尾气处理装置15．（6分，除标注外每空1分）(1） 44.5（2）使反应物充分接触，加快反应速率Mg(OH),+HSO4=MgSO4+2HO（2分）(3） MgSO4（4）冷却（或降温）16．（6分，除标注外每空1分）（1）2H2O2催化剂2H2O+O2↑（2分）（2）其他条件相同时，比较催化剂种类对“大象牙膏”实验效果的影响（3）其他条件相同时，酵母浓度越大，“牙膏”喷出瓶口所需时间越短(4)③6（5）10%的酵母溶液、10%的过氧化氢溶液注意：若答对以下小题奖励3分，试卷总分不超过40分。（6）过氧化氢溶液浓度或温度（7）不是高锰酸钾的化学性质发生了改变17.（5分）（1）设理论上生成四氧化三铁的质量是x。16823216.8g232168 = 16.8gx=23.2g答：理论上生成四氧化三铁的质量是23.2g。（4分）（2）空气（或氧气或0）（1分）2025年中考安徽名校大联考试卷（一）·化学参考答案及评分标准第2页共2页保存以上内容为图片
