D(√3,1),E(√3,0).设P(x,y),令AP=AD(0≤A
17.(9分)星期小贴士电路总功率P=UR+R’其中U是电路电源电压R/O激光60发生器FfrE/cd思烟雾光照强度)①②A.该图象不是反比例函数图象B.R随E的增大而减小C.当烟雾浓度增大时,电压表的示数变小该D.当光照强度增大时,电路中消耗的总功率增大二、填空题(每小题3分,共15分)11.若一次函数y=一x十b(b是常数)的图象经过第二、三、四象限,则b的值可以是(写出一个即可)2a_a-112.计算:a+la+113.某校举办“织就河南非遗画卷”的主题宣传活动,正面印有罗山皮影、朱仙镇木版年画、灵宝剪纸的三张卡片如图所示,它们除正面图案不同外其他完全相同.小文和小轩把这三张卡片背面朝上洗匀,小文先从中根随机抽取一张,放回后洗匀,小轩再从中随机抽取一张,两人抽取的卡片正面相同的概率是(1(2罗山皮影朱仙镇木版年画灵宝剪纸第13题图第14题图第15题图18.(914.如图,在由边长为1个单位长度的小正方形组成的网格中,点A,B,C,D,E均为格点,过点A,B,C作顶ABC,连接DE交ABC于点F,则CF的长是15.如图,M是等边三角形ABC中边BC的中点,P是三角形内一点,连接AP,将线段AP以点A为中心逆时针旋转60°得到线段AQ,连接MQ.若AB=4,MP=1,则MQ的最小值为(2曲三、解答题(本大题共8个小题,共75分)C316.(10分)(1)计算:√3×(-√15)-(÷)+1-4);(2)化简:(x+2y)(x-2y)-(x-3y)²转,押题卷(二)数学第2页共6页
2025年上期八年级期中考试试题数学(总分:120分,考试时间:120分钟)一.选择题(3×10分=30分)1.下列汽车标志中既是轴对称图形又是中心对称图形的是(BD2.在面直角坐标系中,点P(-3,一4)关于y轴对称点的坐标为(A.(-3,4)B.(3,4)C.(3,-4)D.(-3,-4)3.△ABC中,A:B:C=1:2:3,则△ABC中有(A.LA=90°B.a:b:c=1:2:3C.2BC=ABD. 2BC+AC= AB4.在ABCD中,如果A+C=140°,那么C等于(A.20°B. 40°C.60°D.70°5.已知点(一4,y,),(2,y)都在直线y=x+2上,则y,y的大小关系是(2A.y>y2B.y=yC.y
由(Ⅱ)知当α=-时,f(x)单调递增,所以当x>0时,f(x)>f(0)=0,即-x²+x
单元整答题栏选择题(接上页C230222222ZDear classmates,注意:请同学们积极参加,内容包括:第三部分写作(共两节,满分40分)41.depressing ecotraditional tea culture,36as a source of hea第二节1.描述活动时间、地点和内容;2.表达诚挚邀请。)35.A.mess)34.A.awful)33.A.gifts)32.A.rewarded(满分15分)(共10小题;每小题1.5分,满分15分)42.andlighcsiderablntialforcokingleeinandvnMeanwhile,38B.hurryB.paid英语·单元检测卷(七) 3/8贝英语·单元检测卷(七)778页restswith itsomehelps theouseholds of ethnic minorities n the region that servesdemonstrationof young peoples40C.wrongC.likesC.cut4443D.instantD.humorousD.designsCset(integrate)(long) toLi HuaYoursandahead. Getting into my car, I drove into the driveway.2.请按如下格式在相应位置作答。1.续写词数应为150个左右;The next"Is she alright?" I asked.第二节(满分25分)tmorningI pushed the thought of the signpost aside and prepared for the dayrent英语·单元检测卷(七)8/8页
22:551.605G示与食物相关的科学演示和讲座,激发年轻人对科学的兴趣,故选 D。26.A 推理判断题。根据文章最后一段提到的“He saysi teaches you lifeskillsuch as how‘Y upudapu siou q o Mou pue afoid e euu o moq dnoa e u yom oSmalley认为学科学可以培养重要的生活技能,如团队合作、项目管理和独立性等。这些技能不仅对科学研究有用,也适用于生活的各个方面。选项A(It provides valuabl lifeskills)符合这一推理,说明学科学的主要好处是提供了宝贵的生活技能,故选A。27.B 主旨意大题。根据文章整体内容,Smalley 将科学技能应用于烘焙,创建了 ScienceKitchen 项目来激发年轻人对科学的兴趣,还作为NSPCC 的大使帮助创造有趣的数学活动。这些行为都体现了他的创造力和对科学教育的热情。选项B 能够很好地描述 Smalley 的性格特点,他不仅在科学实验和烘焙中展现出创造力,还对科学教育和公益活动充满热情,故选B°语篇类型:说明文主题语境:人与自然程,展示了技术进步如何推动太空探索成本的降低,同时也反映了太空发射领域在降低成本方面的不断探索和创新,以及可重复使用火箭技术对太空探索未来发展的重要意义。28.A 细节理解题。文章第一段提到早期的太空火箭是为一次性使用而设计的,每次发射都需要建造新的火箭。这种“单次使用”的方式导致了太空发射成本高昂。说明早期太空发射成本高的原因是火箭是为单次飞行而建造的,故选 A。29.A 细节理解题。根据文章第二段提到的“To bring it back in one piece to the earth,it had tobe flown down through the atmosphere by human pilots. The need is what made costs high.” 可以明确得知,航天飞机需要由人类飞行员驾驶返回地球,这种复杂的操作方式导致了成本的增加,说明航天飞机没有降低发射成本的原因是其着陆是由人类控制的,故选 A。。30.C 推理判断题。文章第三段提到的“To the Space Shuttle's designers,this would have seemedunthinkably far-fetched— yet it's exactly what SpaceX does today, on a routine basis, with itsFalcon 9rockets.”可以推断,对于航天飞机的设计者来说,使用类似第一代火箭、在没有机组人员的情况下通过计算机控制返回地球的想法似乎是难以置信的。而 SpaceX 如今却能够常规地做到这一点。因此,“far-fetched”在这里的意思是“不切实际的”或“难以置信的”,故选D。31.D 主旨大意题。文章首先介绍了早期太空发射采用一次性火箭导致成本高昂的问题,接着讲述了航天飞机试图通过可重复使用来降低成本但未能成功的原因,最后提到了 SpaceX等公司通过可重复使用火箭技术成功降低了太空发射成本的情况。因此,文章的核心内容是可重复使用火箭的发展对太空发射成本的影响。选项D 精准概括了文章的主旨,故选B。语篇类型:说明文主题语境:人与自然【语篇导读】研究发现小鼠脑干的CCK 神经元能整合多重进食信号触发饱腹感,光遗传学实验证实其激活可减少进食量。该机制与减肥药物 Exendin-4 作用原理相似,为肥胖治疗提供新思路。若人类存在类似神经机制,或可开辟代谢疾病治疗新途径,凸显脑干在能量调控中的关键作用。32. D 推理判断题。根据文章第一段“combine various signals produced as we cat, causing usto fel full and not want to take another bite. The feeding signals these neurons respond to relayinformation like howmuch food is detectedbyreceptors in the mouth,howfull the stomach is andhow high the levels of diffrent hunger signallng hormones in the blood are”可知,CCK神经元的作用在于整合人体大脑接收到的各种信号,从而有效的控制饱腹感。33.D 推理判断题。。考查实验的过程,根据第二段中“To see how CCK meurons may influence eating, the scientists genetically modified(修改) mice so that their CCK neurons could beswitched on and of using light in lab experiments.可知,通过基因编辑的老鼠,通过在实验室光照的条件下控制 CCK 神经元,观察CCK 神经元对老鼠食量的影响。34.B 推理判断题。根据第三段中“Exendin-4is in the same class of drugs as Ozempic andWegovy, which are becoming increasingly popular for the treatment of type 2 diabetes andobesity-respectively."可知Exendin-4是一种类似于糖尿病药物的化学物质,可以用于糖尿病和肥胖的治疗。w存网盘页面管理转Word笔记标注
Liu Li: What about the Changan Art Center?John: That's a wonderful place to visit. 77.Liu Li: We can see fine works of art there.John: That sounds great. How can we go there?Liu Li: 78.Taking the subway is faster and more convenient.John: 79.Liu Li: It takes only 20 minutes.John: All right. 80.Liu Li:Wewill meet at my home at 8:00 a.m.tomorrow.John:OK.Seeyou tomorrow.IX.书面表达(共1题,计15分)假如你是李华,你的英国笔友Tom听说你喜欢音乐,他想进一步了解你喜欢的音乐类型以及你与音乐的故事。请根据以下提示,给他写一封邮件,告诉他相关信息。your favorite kindthe story betweenofmusicyou and musicmailthe changes thatyour feelings aboutmusic brings youmusic要求:1.格式正确,语句通顺,意思连贯,书写工整、规范;2.文中不得出现你的任何真实信息(姓名、校名和地名等);3.词数:不少于70。英语(二)第10页(共10页)
听1005CCheck her application.做题时,先将答案标在试卷上。录音内容结束后,你将有两分钟的时间将试卷上的答案转se32Bipe bgoDLus moieagaibivorg to031.答卷前,考生务必将自已的学校、班级、姓名及考号填写在答题卡上。w邯郸市2025届高三年级保温试题Mltplavitast e gmrohsg yd7peoouuonbe小题将给出5秒钟的作答时间。每段对话或独白读两遍。BA famous footballer.LonbsWho showed the new playing style to the woman?英语GOIB.Cloudy.3.考试结束后,将本试卷和答题卡一并交回。第一部分听力(共两节,满分30分)YRecommending a book to readHe left something at home,C He forgot to book a ticket.What are the speakers doing?听第6段材料,回答第6、7题。What is the weaiher like?例:How much is the shirt?He missed the bus.A.Wait for a reply.Her coach.A19.15.本试卷上无效。A.Rainy.绝密★启用前DGE答案是C。poi一遍。Ti线订弥考号姓名班级学校
8/859.Do all riders wear helmets when riding electric bikes?60.将短文中画线句子翻译成中文。理处第二节书面表达(共15分)分假设你是李华,你校为提升同学们的环保意识,举办了3月“环保月”活动,号召全体学生为保护环境贡献力量。在活动中,你积极响应号召,也遇到了挑战,但0收获颇丰。请你根据以下提示,写一篇短文,谈谈你在3月份的环保行动、收获与作未来规划。卷....提示:试者Environmental ProtectionMonth违Future plans等Environmental actions:号1.savewaterWhat I have learned from the activities:考(turn offthe tap after using)1.knew the importance of protecting the2.use public transportationenvironment;名(walk,ride a bike or take the bus)2.got a sense of achievement,became姓3.make some postersmore responsible写(let peopleknow about要environmental protection)外不线O要求:1.词数:80-100词;订2.内容完整,语言流畅,逻辑清晰;装3.开头已给出,不计入总词数。MarchisEnvironmental ProtectionMonth in our school,andI have triedmy best to题contribute toprotectingthe environment答O要....不O内线订装祁阳市2025年中考仿真考试(一)·九年级英语(试题卷)第8页共8页
AIt depends heavily onuser dataB.It provides wrong information.C.It promotes unhealthy lifestyles.D.Itfails to comprehend instructions14.What does Google declare regarding search results?A.It provides a diversity of ideas.B.It's the userswhoaretoblameC.Itsalgorithms areaccurateenoughD.Itssearchsystemisfarfromcomplex15.What do critics suggest Google do?A.ProvideeasieraccesstoinformationB.TeachmorepublicknowledgeonlineC.EducateitsusersaboutconsumptionhabitsD.Publicize its search engine'sworking principle.第二节(共5小题;每小题2.5分,满分12.5分)阅读下面短文,从短文后的选项中选出可以填入空白处的最佳选项。选项中有两项为多余选项。Complimenting(美)others isa simpleyet powerful way to build betterrelationships,boost someonesself-esteem, and spread positive energy.16_Here are some tips to help you become a master atcomplimentingothersandmakesomeone'sdayBe sincere in yourwordsSincerity is thefoundation of agreat compliment.People canusually tell whether a compliment isgenuine ornot.17_Instead,takethetimetofindsomethingyoutrulyadmireabouttheperson.Forexample,ifyousay,“Yourhardworkonthisprojectreallyshows.Icanseehowmucheffortyouveputin,itwill bemuch moremeaningfulthan acasual,insincere“Goodjob."18youcouldcompliment heronherexcellent eyeforcolor.Complimentingsomeone onwhat they'rereallygoodatisasurewaytobringasmiletohisorherfaceeverytimeLinktotheirgoalsorvalues19_Forinstance,if your friend ispassionate about environmental protection and has organizedarecyclingcampaign,you can say,“Ireally admireyour dedicationto protecting theenvironment.Thisrecyclingcampaignismakingarealdifference,anditshowshowmuchyou care.第8页/共13页8/13

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