答案专期2022一2023学年四川专版（华东师大版）八年级第27~34期分数学用报MATHEMATICS WEEKLY24.(1)因为.点C的横坐标为1答：购关A型节能灯150只，B型节能灯50只若选择方式C最省钱，则月通话时间x的取值所以当x=1时.y=3x=3.时最省钱范困为x>5所以点C的坐标为(1.3)23.(1)在反比例函数y=-4中，令x=-1,则有将点A(-2,6),C(1,3)分别代入y=x+6,得放答案为0≤<，15y=4,所以点4的坐标是(-1.4).26等得价4(3)囚为小王、小张5月通话费均为80元，但在反比例函数y=-4巾，令y=-1,则有x=4,小工比小张通话时问长，所以结合图象可知(2)山(1)，得一次函数的表达式为y=-x+4.所以点B的坐标是(4，-1).小张选抒的是方式A,小正选抒的足方式B当y=0时，-x+4=0.解得x=4因为一次函数y=x+的图象过A,B两点，将y=80代入y2=6x-250所以点B的坐标为(4,0).可得6x-250=80.解得x=55.设点D的坐标为(0，m)(m<0).所以+的4：解得伦·所以小正该月的通话时问为55闪为S%cm=号S8mc,即-7m=3×号×4×3.所以一次函数的表达式为y=-x+3.解得m=-4.所以点D的坐标为(0，-4).(2)如图.设AB交x轴于点C,过点A作AD1第17章综合测试题25.(1)由题意，得△PA0中，0A边上的高为点Px轴于点D,过点B作BE⊥x轴于点E.的纵坐标因为4(-1,4)，B(4,-1)所以San=号40·y=多=+6)，所以AD=4,B=1-、1.B2.B3.C4.B5.A6.B在y=-x+3中，令y=0,得x=37.C8.C9.C10.C11.D12.B即S=-多x+15,二、13.0≤x≤1014.115.(1,0)所以0C=3.所以Saw=S6e+Saw=号OC·16.y=x或y=-x17.x<418.2-1(2)因为△PA0的面积为10，所以S=10,A0+0CBE=克三、19.(1)设反比例函数的表达式为y=即-)x+15=10.解得x=2把点A的坐标(-5,6)代人，得=-5×6=-30将x=2代人y=-x+6中，得y=4.所以点P的坐标为(2.4).所以反比例函数的表达式为y=-30,所以这个函数的图象位丁于第二、四象限，口在第17章17.4~17.5同步测试题每·个象限内，y随x的增大而增大(2)囚为3×(-10)=-30,8×(-3)≠-30-、1.B2.C3.G4.5.C6.B-4×7)=-30,所以点B,D在这个函数的图7.A8.B9.B10.G11.C12.D第23题图象上，点C不在这个函数的图象上二、13.-号14.行15.-3，-424.(1)甲队挖掘速度：60÷6=10（米/H时）20.(1)根据题意可得点P,(3,3).乙队挖掘速度：30÷2=15（米1时）.设直线1所表示的一次函数的表达式为y16.-三四17.多18.-4≤b≤-2枚填10,15.kx+b(k≠0)，三、19.(1)设y=,闪为当x=-2时，y=9,(2)①当2≤x≤6H时，改y2=x+.因为点P(2.1).P,(3,3)在直线L上所以9=奇解得k=-18心知数象过点(2.30)，(6,50).所以+6段解得低=2所以反比例函数的表达式为y=-18则+00解得传0所以直线1所表示的一一次函数的表达式为y=所以当2≤x≤6时，y2=5x+20,2x-3.(2)把x=4号代入y=-18,得y=-18=4②t10≤x<2时，yz=15x;(2)把坐标(6,9)代入表达式因为2×6-3=9，所以点P,(6,9)在直线l上20.(1)根据图象分析，得y1<时，x<2.当2≤x≤6时，yz=5x+20.当0≤x≤6时，y4=10x.21.设经过点(0,2)与点(2，-2)的直线的表达式(2)山图象可知点P的横坐标为2.把横坐标代入y=x+1,得为=3.由10x=5x+20,解得x=4.为y=+6,则B子6=-2听以点P的坐标为(2,3)》当0≤x<2,15x-10x=5,解得x=1.解得化=2把点P(2,3)、点(0，-2)代入y=x+b,当2≤x≤4，(5x+20)-10x=5,解得x=3.所以该直线的表达式为y=-2x+2.得23解得人：多当4x-3.解得x<号[30(0≤x≤25)，50(0≤x≤50)，V,=所以该直线的表达式为y=-x-1(2)当x=1时，y=x-3=-2.6x-120(年>25)，=6x-250(x>50).当k<0时.把x=1代人y1=x+2,得Y1=k+y,=100(x≥0)所以小亮解的这个方程别是-2x+2。2.所以k+2≥-2，即k≥-4。y=-2x-1(2)作出y,y,y与x的函数图象如图所示当层>0时.若x<1时，y,>y.则0<≤1.22.(1)设这个一次函数的表达式为y=x+b,木y/元所以-4≤k≤1，且k≠0.因为函数图象经过点A(6,3)和点B(-2,5)22.(1)设1只A型节能灯的售价是x元，1只B型所以把点A,B的坐标代入，得110节能灯的售价是y元，90图解符低三由题意，可料任所以这个一次函数的表达式是y=-x+3.70(2)当x=0时，y=3解行仔1y=0时x=3.40答：1只A型节能灯的售价是5元，1只B型30所以y=-x+3的图象与坐标轴的交点坐标节能灯的售价是7元1085::110:175分别为(0,3)和(3,0).333(2)设购买A型节能灯红只，则购买B型节能所以该函数图象与坐标轴围成的三角形的面0102030405060708090100x/h灯(200-a)只，费用为元第25题图积是)×3×3=4.5.所以w=5a+7(200-a)=-2a+1400结合图象，可得若选择方式A最省钱，则月通(3)当x=2时，y=-2+3=1<2,因为a≤3(200-a),所以a≤150.话时间：的取值范用为0≤x<8的：所以点(2,2)在直线AB的方（右边）因为w随a的增大而减小，若选择方式B最省钱，则月通话时问x的取值23.(1)把点A的坐标(-1,6)代入y=型，可得听以当a=150时，w取得最小值此时e=1100,200-a=50.范闱为85

8.已知函数f()=nk-2+x-4x,若a=fog,),b=f(og,18),c=f(0),则（)A.a>c>bB.c>b>aC.a>b>cD.c>a>b二、选择题：本大题共4小题，每小题5分，共20分.在每小题给出的四个选项中，有多项符合题目要求，全部选对的得5分，部分选对的得2分，有选错的得0分9.已知a,b是两条不重合的直线，&，卫是两个不重合的面，则下列说法中正确的是()A.若a∩B=b,aC&,则直线a,b一定相交B.若aWB,aca,则a∥BC.若aIb,bCa,则直线a行于面a内的无数条直线D.若/B,acu,bCB,则a与b是异面直线10.定义：ā，万两个向量的叉乘9×万=凤同lsim(a,）,则以下说法正确的是（)A.若a×b=0,则d0bB.6x6）(a)x6C.若四边形ABCD为行四边形，则它的面积等于AB×ADD.若àx6-5,a6=1,则la+可的最小俏为V可11.正方体ABCD.AB,CD的棱长为a,E在棱AB上运动（不含端点），则()EBDA.侧面A4DD中不存在直线与DE垂直交B.面ADE与面ABCD所成二面角为4C.E运动到AB的中点时，A,C上存在点P,使BC∥面AEP3

5得A1,4=1,∈[]上递啪，4故入=1.3y=5(2)法一：因为a十b与Aa十b的夹角为所以μ=1，（入·）mm=0=之，（锐角，3所以(a+b)·(aa+b)>0且a+b与λa十μ）mX=4解析：设B户=入1B它，C炉=入CD,可得b的夹角不为0.AP =AB+BP =AB+A BE =AB+首先Aa2+(1+A)a·b+b2>0,故入·：的取值范周是[，]1:(症-A)=A店+，（号AC因为a·b=3X2×cos灭=3，考点练27面向量的6数量积及其应用A)=1-X1)A店+A衣，A市-所以6x+7>0,解得入>-6其次当入=1时，由(1)得a+b与Aa十。基础巩固练。一AC+Cp=AC+A2Ci=AC十b的夹角为0，所以入≠1，1.C因为b在a方向上的投影向量为:市-A)=A+(号A应所以&的取值范围为（名）U-2a,所以a·b·a=-2a,即aaA)=1-A:+,所以1(1,+∞).法二：设a十b与λa十b的夹角为0，由已知(+)a=0.国为1a1-2乐A=号且号=1-A可得=品得0一6≠1，52-6=19.|a+b|=√(a+b)2=xA克+D元=3gAò+A店.由点0，√a2+2a·b+b=√25-2X6+362所以入的取值范围为（日）U=7,∴.cos(a,a+b）=a·(a+b)F,B三点共线，得3十y=1,所以al.a+b2(1,+∞).19192-3x2y1故选D.4y+1=42+1=2←2114.解：(1)由题意得A京=2FB,5×7=35侧0-号0成+片成=号文+4的如园所示造两极子的拉力分别为OA当且仅当)=2x=3时取等号，即)+o耐=号a+号d,OB.作☐OACB,使∠AOC=30°，∠BOC=2,3旺的最大值为宁4y2+1故0市-0亦-+6C,由共起60°.在□OACB中，点的三向量终点共线的充要条件知，∠ACO=∠BOC=60°，所以∠OAC=12.(2,4)解析：如图，过，点D90°，所以|OA1=|O元1·cos30°=A作AK∥ME,号+号-1，则1-50W5N,AC1=|Od|sin30°=50N,所分别交EH,EF(2)由已知Oi=0元+cB=O元+以OB|=|AC|=50N,故两根绳子拉于点N,K,过点N作NQ∥AB,0成，力的大小分别为50√3N,50N.故选C5.A,'三角形ABC外接圆O的半径为交ME的延长线M因E是线段BC上动点，则令C龙=1(0为圆心)，2OA+AB+AC=0,0于点Q,过点K作KL∥AB,交ME的为BC的中点，故△ABC是直角三角延长线于，点L,由M卫=AM应-M店=xo(0≤x≤)·形，∠A为直角.又|OA|=2|AB|,λM它+MA可知，点P在线段NK上运OB =ACA+O=(OA-OC)+动（不含端点）.当点P与点N重合时，(OC+CE)=(+ux)A+(-1=合成1=2a花=Mp=M夜+MA=2ME+MA,可知oC,入=2.当点P与点K重合时，MP=又O心，OA不共线，则有√-(=i成Mi+MA=4ME+MA,可知入=4.故-入=1，=-1，入的取值范围为(2,4).1→3Ci,Gi-C1-5速A13.解：(1)因为a十b与入a十b共线，所以+x=2=2+2x:6.A由题意可得|a|=(a+b)∥(aa+b),0≤x≤1

自我评价☆☆☆☆☆年月日二年级数学一、填出商和余数。4=()…()5=()…(29÷6=()…(7=(）…(8=(）…(二、开火车。36÷9×6÷8×6÷2L回⊙⊙⊙L⊙回L回⊙1L⊙⊙L⊙⊙09n28÷7×8+4÷6×9⊙⊙回-回回回三、解决问题。2艘船可以载1.(1)1艘船可以载多少千克货物？18千克货物。(2)8艘船可以载多少千克货物？2.妈妈买了24个苹果，把这些苹果放到4个盘子里，均每个盘子里放多少个？3.小青有60元钱，买了4个小皮球花了36元，余下的钱买了3个布蛙娃，每个布娃娃多少钱？19

参考答案学生月书cos y=cos a-cos B,将两式分别方后相加，=2cos号(r号-cos号)】1=(sin B-sin a)2+(cos a-cos 3)2=2-2(sin Asin a+cos Bcos a),=-2s号cs0∴c0s(ga)=乞，即选项A正确，B错误；-2s号cs故原式=os号=-cos 0.:ye(0,登）∴sny=ng-in>0Da,周a9e(0,吾）【走进高考∴00,sina>0,=cos50°cos127°+sin50sin127.2sina=cosa,又sin2a十cos2a=1,=c0s(50°-127)=c0s(-77)=cos77°=sin13°，5sina=1,sna-日，b-号(6n56-cos56)又m>0i如=，款适且=9如56-竖、2cos56°3D[解折]由题意，os2益-cos2登=cos2节-co(受-最)-=sin(56°-45)=sin11°，os危-r臣=60s晋-9故造D落c0s2391+sin239=cos239°-sin2394.A[解析]tan2a=2acos2 39=cos78°=sin12°.m2a产品。-。品-2 sin acos a」cos a.'.2sin a(2-sin a)=cos2a-sin2a,因为函数y=sinx在x∈[0，上单调递增，'.4sin a-2sin2a=cos2a-sin2a=1-2sin2a,1所以sin13>sin12>sin11°，.sin a=4所以a>c>b.4D折]由已如，器+m0=3又"ae(0,受)如图，∴tana=则V3sin20°+Asin20°cos20°=3cos20°，从而号sin40°=3cos20°-5sin20°4=2√/3sin(60°-20)=2√3sin40°、所以1=4V3,故选D.国[解折](1a)=mos。-5sna+号155-2[解析]因为sina十cos=1,cosa十sinB=0,-合如2a-5×1%2@+2所以(1-sina)2+(-cosa)2=1,=是sn2a+9cos2a-sn(2a+受）】所以na=号cosg=合，2f(受+号)-m-写.图此sma+m=sin+i=月合X合-cos2a=}-1+血a-5。sim=-1+=-第23讲简单三角恒等变换“e(-吾，0）s。-29【基础检测】1.(1)×(2)/m2a=2sns=-cs2=2a-1=号，2.D[解析]因为√I+cos4=√2cos22,又cos2<0,所以可得选项D正确3.[僻析](1)如图，分别过P,Q作PD⊥OB于点D,QE⊥OB于点E,10训练巩固5.[解折]由0E0,,得0<号<受，0.c0s号>0，vV2+20s9=1√4g2哥=2as号OM EN DB则四边形QEDP为矩形.由扇形半径为l,得|PD|=sin0,IOD|=cos8.又1+sin0+cos60(sin号-cos号）又1oE-停1QE-91Pp,=(2sim号cos号+2cos2号）)(sin号-cos号）】537

-

35.D主旨大意题。全文围绕一款新型减肥药展开论述，说明这种药对减肥的作用，并提及这种减肥药的功效显著，因此D项可以概括文章大意。本文是一篇说明文。文章主要介绍Dr.Guy关于“怎样在夜晚让身体得到充足的休息”的建议。36.C语境题。本题考查语境的递进关系。前文提到每个人需要的睡眠总量在六到九个小时，C项说需要得到足够的睡眠，符合语境，都在谈论睡眠的“量”。37.E语境题。本题考查语境的并列关系。本节介绍的是傍晚时分的锻炼，前文说下午4点到6点人体最强壮最灵活，E项说“而且，此时你的肌肉温度最高”，因此选E。38.D语境题。本题考查语境的顺接关系和关键词的指代。前文提到Dr.Guy会尽量在晚上六点前吃饭，D项“这样就能保证身体有五个小时的时间来消化食物”，符合语境。39.A主旨题。这一段介绍的是睡觉前的准备工作，因此选A作为段落标题。40.G语境题。本题考查语境的因果关系和关键词复现。G项“手机屏幕的蓝光和太阳光的波长是一样的”与下文从内容到关键词的再现都吻合，因此选G。本文是一篇记叙文。作者阅读专业书籍的时候遇到困难，在表弟的建议和帮助下去了波尔顿大学学。在此期间，作者在读到一本短篇小说后爱上了阅读，之后他热衷于阅读各类书籍，不断地丰富自己的知识储备，最后以优秀的成绩毕业。41.A语境表示作者希望自己能够拥有比获取专业资格证书所需要的更丰富的知识，因此在读书，但是却看不懂。从语境判断选A表示“要求”。42.D这里表示作者的表弟向作者提到读大学的各种潜在的好处，并建议作者去读大学，因此选D表示“潜在的”。43.C这里表示作者不假思索就直接拒绝了对方的建议，因此选C表示“拒绝”。44.D从语境的转折关系和后文中的“had faith in me”可知，作者的表弟却深信作者应该去读大学，因此选D表示“确信的，信服的”。45.B这里表示作者被这所大学录取，选B表示“允许进入；录用，录取”。46.A作者被大学录取了，一切入学事宜包括住宿费作者的表弟都已经安排好了，因此选A。47.C这里表示教授建议他的学生去阅读科研论文、科研期刊和文学作品，从四个选项的含义判断选C表示“杂志，刊物”。48.B这里用Honestly强调作者在这里坦诚地说出自己当时的实际阅读能力。49.D作者不太了解文学作品，但还是选了一本短篇小说，这本书使作者觉得它很重要，用fl表示“使人感觉…”。50.A这里说的是这本书很薄，因此不会给阅读带来太大的困难，用difficulty表示“困难”。51.C这里说的是作者在读书过程中的快乐是难以用任何言语来描述的，因此选C表示“描述”。52.D这里表示作者在阅读的过程中翻动书页，因此选D。53.B这里表示作者在阅读的过程中还随身携带一本用于摘抄的笔记本，因此用keep表示“持有”。54.C这里表示作者的房间里到处都贴着作者喜欢的作者的图片，因此选C表示“覆盖”。55.A从语境和选项看，这里表示作者把阅读中遇到的名人名言摘抄下来贴在墙上，用quotes表示“语录，引言”。56.D这里用动词stand表示“承受”：作者在自己的大脑能够承受的范围内自学了尽可能多的文章和诗歌。57.B每本书都向作者展示了周边世界的各种详细情况，用details表示“细节”。58.A作者想换专业，但是这就意味着作者必须要自费多读一年，这里用extra表示“额外的”。59.C这里用副词instead表示替代前者的方案。60.B这里表示作者请他的朋友带他去蹭课，用lectures表示“课程”。本文是一篇记叙文。文章主要介绍故事的主人公来到中国云南的一座城市当志愿者的经历和感悟。61.isg考查非谓语动词。本空表示“正在崛起的政治和经济强国”，用提示动词的现在分词形式作定语。62.or考查连词。这里用并列连词or表示选择，与either呼应。either A or B,故填or。63.meaningful考查形容词。本空用提示名词的形容词形式meaningful,表示“有意义的”。64.personally考查副词。这里用提示形容词的副词形式作状语。英语第4页（共6页）

听力材料听第六段对话，回答第11-12小题。听第一段对话，回答第6小题。(A)11.What festival are they talking about?6.M:The post office is too far.How can we getA.The New Year.there,Kelly?B.Children's Day.W:Well,my father can drive us there.C.The Dragon Boat Festival.听第二段对话，回答第7小题。(C)12.Where is the new supermarket?7.M:This is Bob.What are you doing now,A.Next to the library.Amy?B.In front of the library.W:I'm watching a show about animals on TV.C.Across from the libraryIt is so interesting.g感听力材料听第三段对话，回答第8小题。(A)8.When does the lesson start?听第六段对话，回答第11-12小题。A.At10:30.B.At10:00.C.At9:30.听M:There are so many people in the street,听第四段对话，回答第9小题。Anna.(B)9.Where is the bank?W:Yes.The New Year is coming.They are busyA.Behind the restaurantshopping.What do you want to buy,Bob?B.Next to the restaurant.M:Well,I want to buy some fruit.C.Across from the restaurant.W:A new supermarket is across from thelibrary.Let's go there!g厚听力材料听第七段对话，回答第13-15小题。听第三段对话，回答第8小题。(C)13.Where is the new bookstore?8.M:Come on!We'll be late for the chessA.It is next to the school.lesson!B.It is in front of the school.力W:Take it easy,Jack.It is 9:30.The lesson力C.It is across from the school.starts in one hour.(A)14.What kind of book does Mike want to听第四段对话，回答第9小题。buy?9.W:Excuse me,I'm new here.Can you tellA.About animals.B.About colors.me the way to the bank?C.About sports.M:Yes.Walk along the street,and you canB)15.Why does Mike want to buy it?see it next to a restaurantA.For a test.B.For a birthday.⑧③C.For a report(报告).听力材料B.听对话听第七段对话，回答第13-15小题。听听第五段对话，回答第10小题。W:Hi,Mike.There is a new bookstore acrossB)10.How long does Jane play tennis onfrom our school.How about going there thisSunday?力afternoon?A.For one hour.B.For two hours.M:Sounds great.I just want to buy a bookC.For three hoursW:What kind of book do you want to buy?M:About animals.W:Do you like animals?M:Not really.My sister likes them,so I want tobuy her a book for her birthday.度®W:That's a good idea!C.听短文④请根据所听内容，从每小题所给的三个选项中选出一个最佳答案。短文听两遍。听力材料(A)16.Where is Jason's house?力听第五段对话，回答第10小题。10.M:What do you usually do on Sunday,力A.It is across from a music club.B.It is in front of a police office.Jane?C.It is behind a supermarket.W:I play tennis from 9:00 am to 11:00B)17.When does Jason go to the club?am.In the afternoon I go to the library.A.On Monday.B.On WednesdayC.On Friday(C)18.What can Jason do?③原A.Play the violin.B.Play the guitar.C.Play the drums.6

21.(本小题满分14分)如图，在五面体ABCDE中，面BCD⊥面ABC,AC⊥BC,ED /AC,EAC=BC=2ED =2,DC=DB=3.D(1)求证：面ABE⊥面ABC.②(2)线段BD上是否存在一点F,使得面ACF与面FABE的夹角的余弦值等于？若存在，求的值：11若不存在，请说明理由.B

1上的值城是[-2,1.15分)12.（1)如图，设水轮与x轴正半轴交点为A,y轴与水面交点为B.根据题意，设h=asin(wt+p)十b,a=r=2,b=OB=1,∠B0P=号9=-吾，:函数h=asin(wt十p)+b的最小正周期T=4,2π=x,6四4.29点P距离水面的高度h(单位：米)表示为时间t(单位：秒)的函数是h=2sin(受t-否)+1（≥0）.(8分)(2)根据题意，h=2sin(受-)+1>2，sin(受1不妨设[0,4幻，则-音≤受4看<告，吾<受-<解得号<22-号-专，4∴.在水轮转动的任意一圈内，点P距水面的高度超过2米的时间有专秒.(16分)

-

红灯三步一体高效训练讲评周测卷二十五卷行天下·数学札记函数y=Asin(wx十p)及三角函数的应用(40分钟100分)必备知识点服微信扫码】命题视点关键能力点函数y=Asin(wz十p)及三角函数的应用逻辑思维能力、运算求解能力、创新能力可缘▣命题情境点生活实践情境探索创新情境课程学情境3、10题观看微课视频6、8题2、7、9题果外颠解下载复课件题序12356答案AD一、选择题：本题共6小题，每小题8分，共48分B点向E1.下列直线是函数y=sin(x十受)图象的一条对称轴的是进20√3米A.x=0BE=年C.=号D.x=2图88-Sie=()1提函部客648解析：由题得sin(x十交)=cosx,函数y=cosx图象的对称轴方程为x=kr,k∈Z答案：A2.为了得到函数y=sin(x一)的图象，只要把函数y=sinx图象上所有的点A.向左移个单位长度B向右移受个单位长度C.向左移牙个单位长度D.向右移于个单位长度解析：将西数y=5加x图泉上所有的点向右移晋个单位长度，可得到西数y=sn(x一子)的图象。答案：D3.某城市一年12个月的均气温与月份的关系近似地用函数y=a十Ac0s[(x一6)](x=1,2,3,,12)来表示已知6月份的均气温最高，为28度，12月份的均气温最低，为18度，则10月份的均气温度数为来A.20.5B.21.5D.23.5的C.22.5解析：今f)=a+Acos[吾(x-6],由6)=28a+Acos[石×(6-6)]=28即/a+A=28f(12)=18解得aa+Acos[吾×(12-6]=18a-A=1823,A=5,所以f(x)=23+5c0s[(x-6)].【24新教材.ZC数学-RA-必修第一册-G DONG】67

2023一2024学年度第一学期素养形成第一次能力训练初三数学注意事项：1.本试卷共6页，满分120分，考试时间90分钟。2答题前、考生务必将自己的灶名、准考证号填写在本试卷相应的位置上。3答案全部在答题卡上完成，答在本试卷上无效。一、选择愿（本大题共10个小题，每小题3分，共30分。在每小题给出的四个选项中，只有一项符合题目要求，请选出并在答题卡上将该项涂黑)1.下列二次根式中，属于最简二次根式的是B.0.Ic.√4D.82.将一元二次方程8x2-3x-5=2化为一般形试后，二次项系数和常数项分别为A8,5B.8,-7C.8,-3D.3,53.下列计算中正确的是A5÷5=5B.32-V2=3c.2x5=10D.V5+V万=24.要使二次根式V6x+12有意义，则x的取值范围是A.x≤-2B.x≥-2C.x2-10.x25.用配方法解一元二次方程x2-6x+1=0,此方程可变形为A(x+32=8B.(x-3=10C.(c+3}=10D.(x-3}=8初三数学第1页（共6页）（能力训练一）

张家口市2022一2023学年度高二年级第二学期期末考试英语参考答案及解析第一部分听力（每小题1.5分，满分30分）1~5 CAACB 6~10 CAABC 11~15 BBCCC 16~20 BABAC第二部分阅读（每小题2.5分，满分50分）》第一节A篇2l.B根据文章第二节中“An exhibition called Family Harmony at the Long Museum's WestBund examines the roles of figure paintings in carrying on values and cultural traditions forfuture generations,.”可知答案。22.D根据文章第四节中“Open:9:00a.m.~1:00p.m.,on August11;1:00p.m.~5:00p.m.,onAugust12;9:00a.m.~5:00p.m.,on August13~17.”可知答案。23.C本文主要介绍了四个关于文化的精彩展览，所以C项符合题意。B篇24.B根据文章第二段中“This is peace.This is fun.This is what self-esteem(自尊)is builtof.”和第四段中“it's been the most nurturing(滋养的)，sustainable,and non-anxietyincluding relationship I've ever had.”可知，作者从现在一个人的状态中受益很多。25,A根据文章第三段中“It's hard for some people to believe that I am choosing not to date,andIoften get strange and confused looks from my old aunt and college friends alike,”可知答案。26.C文章第四段的中心思想是表达作者对目前状态的满意，所以C项符合题意。27.A根据文章内容可知，最后一句话体现了作者对新关系的期待，但可推断这种新关系是作者经过自处，自我完善后的基于目前模式的关系。C篇28.B根据文章第二段中“The company collects waste coffee grounds(渣滓)from all across theUK,from thousands of different outlets and then turns those waste coffee grounds in thefactory in Cambridgeshire into advanced biofuels..”可知答案。29.D根据文章第二段内容以及第三段中“It has produced enough to run one bus for a year on20%coffee oil..”可知答案。30.A总结文章倒数第二段，再结合该段最后的“So Bio-bean wants to work with companies tosave money and importantly save CO2 emissions..”可知，Arthur Kay对Bio-bean做的这件事持乐观的态度。31.B根据文章中心话题为coffee可推断出，早晨的“咖啡”对你和上班的公交车的双重作用。高二英语参考答案及解析第1页（共8页）

worrying high school could be,and she was afraid she wouldn't fit in可知，在去学校之前，Emily从哥哥们那里得知高中生活会令人感到发愁，并且她担心自己无法适应。由此可知，Eily对即将开始的高中生活充满了担心与恐惧，因此可推知划线部分意为“不安、紧张”，故选B项。25.A。理解具体信息。根据第三段中的Mr.Johnson was known for being strict,but also forbeing passionate about literature可知，Johnson以十分严厉且热爱文学而出名。26.B。理解具体信息。根据第四段中的He began to introduce himself and then asked eachstudent to stand up and share something about themselves可知，Johnson进入教室后，首先进行了自我介绍，然后要求学生介绍他们自己。27.A。推断。根据最后一段中的She was excited about what the future held.She knew that shehad a lot to learn,but she was ready for the challenge可知，Emily对高中生活充满了期待，准备好了迎接即将到来的挑战。C篇主题语境：人与社会一一社会本文是说明文。在意识到当前团体旅行市场上的缺口后，Radha Vyas创办了Flash Pack,为30到49岁的个人提供团组旅行服务。28.A。理解具体信息。根据第二段中的A few years ago,Radha Vyas discovered a gap in thegroup travel industry.She realized there wasn't anything for her age group:30-to 49-year-olds知，Rada发现团体旅行市场上没有针对她这个年龄层次(30一49岁)的团体旅行服务。29.C。推断。根据第三段中的Upon hearing her idea,,Lee agreed that it could work.Later,thecouple developed an idea for flashpacking可知，当Radha对Lee说出了自己的想法后，二人一拍即合，并开始落实这一想法。30.B.理解具体信息。根据第五段中的Radha and Lee hope to use travel“to create1,O00,O00meaningful friendships around the world.”That might be the key to their success可知，Radha和Lee希望通过他们的旅行服务促进友情，这也是他们成功的关键。31.D。推断。作者在最后一段中向读者介绍了Flash Pack在世界不同地区提供的旅行服务，再结合文章的最后一句话Whatever your idea of a dream vacation is,Flash Pack probably hasthe trip for you可知，作者旨在鼓励人们选择Flash Pack出行。D篇主题语境：人与自然一一环境保护本文是说明文。文章介绍了刚果的黑猩猩保护区致力于保护黑猩猩，为它们提供安全的活动场所。32.A。理解目的。作者在第一段中描述了动物饲养员照顾被噩梦惊醒的黑猩猩的场景，并介绍了黑猩猩George是如何被送到动物保护区的，进而在下文中具体介绍了这一动物保护区。由此可知，第一段的写作目的是引出本文的话题。33.A。推断。根据第三段中的At its opening,in1992,Tchimpounga had space for60chimpanzees.It has since grown to the size of a hundred football fields and houses around 150chimps以及第四段中的These actions are paying off...our actions are working.”可知，该保护区在保护黑猩猩方面取得了很大的成就。34.D。理解具体信息。根据最后一段中的Atencia also works with people who live near thesanctuary.This makes them less dependent on the area's natural resources可知，JGl的员工帮助当地的人们解决医疗保健和饮水方面的困难。35.B。理解主旨要义。文章介绍了保护黑猩猩的动物保护区，包括其历史、发展以及为保护黑猩猩做出的努力。由此可知，文章旨在介绍这一保护区，故B项适合作文章的标题。

试卷类型：H2023~2024学年度第一学期期中调研九年级数学注意事项：21.本试卷共6页，满分120分，时间120分钟，学生直接在试题上答卷：5:县市区2.答卷前将装订线内的项目填写清楚，题号三总分得分得分评卷人学校一、选择题（共8小题，每小题3分，计24分.每小题只有一个选项是符合题意的）1.若x=3是关于x的一元二次方程x2=a的一个解，则a的值为(A.9B.6C.3D.12.若线段a,b,c,d是成比例线段，且a=1cm,b=4cm,c=2cm,则d=)C.3 cmD.8 cm姓名装A.0.5 cmB.2 cm3.用配方法解一元二次方程x2+8x-3=0时，下列配方结果正确的是()A.(x-4)2=3B.（x+4)2=3C.(x-4)2=19D.(x+4)2=194.如图，BD为矩形ABCD的对角线，点E、F分别为边AB、BC的中点，连接EF,若BD=6,则EF的长为()A.1B.2C.3D.4班级5.如图，比例规是伽利略发明的一种画图工具，使用它可以把线段按一定比例伸长或缩短，它是由长度相等的两脚AD和BC交叉构成的，如果把比例规的两脚合上，使螺丝钉固定在刻度3的地方（即同时使OA=30D,OB=3OC),然后张开两脚，使A、B两个尖端分别在线段AB的两个端点上，此时若CD=4cm,则AB的长是（)订A.16 cmB.12 cmC.8 cmD.6 cm试场EE考号(第4题图)(第5题图)(第7题图)6.某校举办文艺汇演，在主持人选拔环节中，有一名男同学和三名女同学表现优异，若从以上四名同学中随机抽取两名同学担任主持人，则刚好抽中一名男同学和一名女同学的概率是()线AB时c号D7.如图，四边形EFCH的四个顶点E、F、G、H分别在正方形ABCD的边AB、BC、CD、DA上滑动，在滑动的过程中，始终有EH∥BD∥FG,且EH=FG,四边形EFGH的周长为6万，那么正方形ABCD的周长为()■A.24B.12C.6万D.6九年级数学期中调研H-1-(共6页)

第二节阅读下面短文，在空白处填入1个适当【写作指导】的词或括号内单词的正确形式。本篇作要求学生写一封邮件向英国朋友分享自White pollution is a serious kind ofenvironmental problem.The white color usually己的一次环保活动经历。根据提示，写作重点是(73)refers(refer)to something clear and具体描述活动的时间、地点、活动内容以及当时clean.However,white pollution is very的感受。(74)harmful (harm).Because of single-use◎主题：人与自然之环境保护plastic tableware(餐具)and thin plastic bags,O子主题：环保意识和行为white pollution is(75)becoming (become)more◎主要时态：一般过去时and more serious.They're easy to useO主要人称：第一人称(76)andhave already become part of og⊙行文布局：daily life.When people ask for take-out food,it①指明写信目的usually comes with single-use plastic boxes.I'm writing to tell you something about anWhen people go shopping,they can often getenvironmental protection activity.②介绍活动的具体信息plastic bags.People use too many plastic→时间：The activity was on last Sunday..(77)products (product)because of their-→地点：We got up early and went to the Sunshineconvenience.Beach together.White pollution affects the environment→活动：First of all,.we gave a speech aboutmainly(78)intwo ways.On the oneenvironmental protection to people around.hand,plastic waste can be seen everywhere in theThen we went to pick up rubbish along thenatural environment.It makes cities,towns,hillsbeach.lakes...dirty.On the other hand,plastic waste canAfter that,we took a photo together.stay (79)forcenturies,resulting in soil→感受：Everyone was tired but we all had a bigpollution and water pollution.It can even causesmile on our face.many illnesses.What's(80)worse (bad),③询问对方的看法并表达希望得到回复的愿望。animals might die after eating plastic rubbish byWhat do you think of this activity?mistake on the land or in the water.And it's hardI'm looking forward to your reply.(81)to solve (solve)the problem in a very longO必背句型：大How's it going?term.I'm writing to tell you something about...Now everyone should help reduce white大First of all,...pollution and(82)recycle(recycle)plastidwaste.g假如你是陈华。近日，你参加了学校组织的一项第环保公益活动。请你根据以下提示，给你的英国+To my surprise,…朋友Mike写一封邮件分享这次经历吧。Everyone was tired but ..大要点提示：I'm looking forward to your reply.时间上周日地点阳光沙滩开展环保宣讲活动作活动内容收海淮上的垃圾合影留念感受写作要求：要点齐全，语句通顺，语法正确，书写规范；【参考范文】2.可适当增加细节，以使行文连贯；Dear Mike3.不少于80词（开头和结尾已给出，不计入总词数）。How's it going?I'm writing to tell yousomething about an environmental protectionactivity.The activity was on last Sunday.We gotup early and went to the Sunshine Beach together.On the beach,we did some meaningful things.First of all,we gave a speech about environmentalprotection to people around.They learned a lot

第4期听力练录音原文Text 1W:Dad,can you help me with my English paper?I'm kind of stuck on it.M:Coming right up,Penny.Let me finish the gardening first.Text 2W:What is your trouble,Mr.Brown?M:I hurt my foot in a football match last week.I took some medicine,but it didn't workW:Don't worry.Let me give you an examination first.Lie down,please.M:I hope it's not serious.I have a match this weekend.Text 3W:Look at Danny.Why is he wearing such a long face?M:Haven't you heard of it?He went out of business this week.W:Oh my!Poor Danny.Hope he could get through it soon.Text4W:Guess what!I've decided to go back to school!M:Good for you,Mary!You're one step closer to your dream.Have you chosen your favoritecollege?W:Not yet.I'm considering some colleges in New York and I'll send applications before March.M:I hope everything goes well.Text 5M:Susan,guess what I found this afternoon!W:I have no idea.What is it?M:I found a puppy on the way back from school.It seems lostW:What a poor little thing!How will you deal with it?M:I'll bring it to Jennifer's.Her dog died in a car accident recently.I think she'll be happy tokeep it for now,and then I will try to find its owner.W:Sounds like a good plan.It looks very hungry.Let's give it something to eat first.M:Yeah,Jennifer said she won't be home until 8:00 pm.It's a long wait.Text 6M:Hi,Miss Catherine.Where are we going next?W:Let me check.Our next stop is the Chengdu Research Base of Giant Panda BreedingM:What can we do there?W:We can see the pandas up close.Be ready to take many photos.You will fall in love with thesecute creatures.But keep in mind that visitors are not allowed to feed pandas or touch them.M:I see.Well,Miss Catherine,I remember you said there would be a traditional art show tonight.What is it about?W:It's a Sichuan opera in the Sichuan Opera Theatre of Chengdu.M:Wow,I've learned it from an art exhibition before.But I didn't expect to see the show inperson!W:Yeah,the greater part is that you can also go backstage after the performance.M:Sounds great!I can't wait to get started.W:I hope you enjoy your time.Let me know if you need anything.Text 7W:What are you reading,Henry?

-

-

I.1.more2.around3.show4.radio5.lions6.differentII.1.seem happy2.at night3.take photos4.find out5.on holiday6.to celebrateSection CI.1.great;play2.right;high3.toy;toilet4.blouse;flower5.slow;boat6.year;hear7.pear;chair8.sure;tourIⅡ.1.most2.packets3.watches TV4.have a big dinner5.get togetherIⅢ.1.in;or2.at this time of3.letting off4.get;ready5.an important festival 6.have;fun7.is;on TV8.get;from●

Whichbebe the friendhip between Geoff and Celesta?D.Ordinary.C.Complex.Withbydrate dietnin popularity in recent times,the potato isnowA.Lasting.·BOddvkdinvour of other vegetables.In,research literature has previouslyindicated potatoes may havea detrimefsuchas increasing the possibility ofput British andHowever,new research done by Edith Cowan University (ECU)has shown whiledeveloping Type2 diabetes(糖尿病).potatoes may not have all the same benefits as some other vegetables,such as lowering risk ofta Byrne,fromType 2 diabetes,health issues associated with potatoes may actually be due to how people areneer Geoff evenn the Internet.A recent analysis of this study led by Dr Nicola Bondonno from ECU's Nutrition andpreparing them and what they're eating them with.paper that heHealth Innovation Research Institute found people who consumed the most vegetables were 21have only everpercent less likely to develop Type 2 diabetes than those who consumed the least amount ofhen again twod to live nearvegetables.PhD candidate Pratik Pokharel carried out work on the analysis and said whilepotatoes didn't have the same impact on Type 2 diabetes,they also didn't have any negativeto the US foreffect.k for a short"In Denmark,people consume potatoes prepared in many different ways.In our study,arly letters,Iwe could distinguish between the different preparation methods.When we separated boiledation(加冕)potatoes from mashed potatoes(土豆泥)，fries or crisps,boiled potatoes were no longerassociated with a higher risk of diabetes:They had a zero effect,"said Pokharel.any romance"In our study,people who ate the most potatoes also consumed more butter,red meateoff is now aand soft drinks-foods known to increase your risk of Type 2 diabetes,"said Pokharel."Wens scatteredshould separate potatoes from other vegetables in regard to messaging about diseaseprevention but replacing refined grains such as white rice and pasta（意大利面食)withce of beingpotatoes can improve your diet quality because of fibre and other nutrients found in potatoes."endship and28.What does the underlined word "detrimental"in paragraph 1 mean?C.Fantastic.D.Negative.B.Protective.29.What may contribute to the bad reputation of potatoes according to ECU's research?A.Magical.A.The effects they have caused.B.The ways they are consumed.C.The places where they are planted.D.The results previous studies have shown.30.Which of the following have little effect on Type 2 diabetes?er.A.Fries.B.Crisps.C.Boiled potatoes.D.Mashed potatoes.0y·HUN·自【高二英语第5页（共10页）川·HN·

So I put forward a suggestion that you should take at least one hour's exercise every dayfrom now on.Best wishes.Yours,Li Hua第二节参考范文：We carried out our plan immediately.Jack was dangled upside down by the legs and wedragged his legs so that he could lower into the canal and then get hold of the dog's collar withhis right hand,and placed his left hand under the dog's front legs for support.Jack was thenpulled up by us,and the dog was safe and sound.The crowd who had gathered aroundclapped and cheered for us.Afterwards,both the dog and the owner were so happy that theyran around the canal in celebration.At the same time,I realized my camera had filmed thewhole event.All of us felt excited.The video of the moving rescue was posted online after we came back home.We found ithad raised much attention and many people watched it and left comments.It has earned over75,000 likes,with dozens praising the efforts of us who put ourselves in danger to save thedog,which made us surprised and delighted.It was a precious experience and left us withwonderful memories.We only did what anyone else would do.【高一英语·参考答案第4页（共4页）】·24-138A·

the world,reaching an altitude of 4,700 meters at the Khunjerab Pass.Starting in Kashgar,China,cyclists can travel up to 1,200 kilometers on mostly unpaved roads,but the views are as breath- taking as the riding. Route of the Hiawatha,Idaho-Montana,the United States Take your family out to Montana this summer and cycle a- long the most scenic disused railroad in the country.The railroad turned bike trail turns into 24 kilometers of leisure biking that takes you over seven trestles(高架桥)and through 10 tunnels, with the longest one,the Taft Tunnel,stretching for 2.7 kilo meters. 1.What can cyclists do on the Udaipur City Tour? A.Feed wild animals.

第四部分写作（共两节，满分35分） 第一节短文改错（共10小题；每小题1分，满分10分） 假定英语课上老师要求同桌之间交换修改作文，请你修改你 同桌写的以下作文。文中共有10处语言错误，每句中最多有两处。 每处错误仅涉及一个单词的增加、删除或修改。 增加：在缺词处加一个漏字符号（∧），并在其下面写出该加的 词。 删除：把多余的词用斜线（八）划掉。 修改：在错的词下划一横线，并在该词下面写出修改后的词。 注意：1.每处错误及其修改均仅限一词； 2.只允许修改10处，多者（从第11处起）不计分。 Nowadays many children are getting fatter and fatter.By

豫北名校2023一2024学年上期第一次精英联赛0bb:ZZ￡/ZL/eZ0ZVH3WyD OVNo IV(由55.8高二数学参考答案与鱼线C有一个交发。时：当与半摄相时尚品-有一兮·初做记为,小+分折司知当北4时。7与曲线C有公共点。放选：B08d0EXI03883直之、选择题（体题共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、点0)M直56项是符合题目要求的.)5-5+b市，0=，武1.D号，纯0n0日【解折】z=-1-i,则-2刘=+-可=巨.故选：D.A.I2.A代五的三+C+x直A干【】:千【解折油和28=2血Beo8=血B,而血B0,则eam因=宁又B@对所B-于由ge血B-5-ae42+e-2=0+0-2a0+ow,则e26.A综上，MBC的周长为6故选：A与顶，0=什+(+x(-+5门干饮3.B解折1把-代入号名-1中，得号网-号因为-a+et折1点G为c的0，G0m+46g:0G:2号学Mr=2h,所以公-2a+0=-2c+2,又c=3,所以d+2a-3=0,解得a1,4.+卡试分的0圆微比因，d千饮：的a=-3舍去，则2a=2故选：A，心-这点的义干关7.C【解析】由题知，在正四面体A二BCD中，因为O是外接球的球心，鼎的门圆格灼闲:01-【解折】在Cy2px(p>0)中，焦点为F号，0，焦点F关于直线x+y=m即设三角形月CD的中心为点5，BC的中点为F,则0-。OA .SI,=兰【獭】-而+号不而+号传西+河列而+西花，色民走膏，中灵数个四帕出触离小2-卫0共，2是小共本)数y=-x+m的对称点为A(2,);2不，解得P=2.抛物线的方程为y2=4x,m=21而=西+C+而.故选：C(，3)(X,)当A【港】显然直线MN的斜率不为0，设直线MN的方程为x=四+1，且1≠0，直D一E=四，：五A>0>0又虽烈业点交的0=（一x己0=父+：一武三角面谢不心，京一同近生直司三风=0+0前0-=x-人外，0)5.B080-308心20精粉床0=t-十x大管式的类直的卧铁(C月点丝盘3：男船日战国，【解折】直线1：c一y-2-0恒过定点(0，-2)，曲线C:一0-可=1表示以点0)为旅食点交州解坐两已0=无-义-x处直以，0，是静)的点知臀心容，0《-圆心，半径为1，且位于直线x=1右侧的半圆（包括点02），Q,0).当直线1经过点0,2)时，设M6,别N名3)联粒任”，整要可得-博=0四，-.0y2=4x高二数学参考答素第1页（共1页）高二数学参考答案第2页（共11页）

21.How much will you pay if you buy a bigger version of wireless speaker? A.$129. B.$159. C.$199. D.$299. 22.What might a movie lover prefer to choose? A.A pocket projector. B.An adjustable tablet stand. C.A chalkboard wall planter. D.A Jawbone Jambox wireless speaker. 23.What is the purpose of the text? A.To warn. B.To advertise. C.To bargain. D.To educate.

20.Which place did the speaker visit? A.A market. B.A restaurant. C.A supermarket.