听第9段材料，回答第14至17题B14.What is the woman?He said reading can not only enrich the mind,but听C.Adrvrerseller.B.A secretary.also bring peace to the heart.His words were simpleA15.What does the man need to do tomorrow听but educational.This program has turned readingmorning?into a new fashion.(19)It shows reading is the trueA.Have a meeting.B.Meet with h-is wife.treasure that everybody should have.Reading isC.Book a ticket.C 16.When will the man take a train tomorrowhelpful to us because it will make us wise,happymorning?and knowledgeable.It can be done anytime and力A.At5:40.B.At6:00.C.At7:00.anywhere.What are you waiting for?Why not startC 17.Why does the man want to return earlyreading now?(20)tomorrow?A.To cook dinner.B.To have a good rest.C.To celebrate a birthday.Text 9AD 21.Who might be most interested in volunteering throughM:Anna,come in,please.(14)Volunteer Match?W:Yes,Mr Smith.What would you like me to do?(14)阅A.Those who first cooperate with charity.B.Those who like to make things by hand听读C.Those who need to track their donated money.力M:I need a train ticket to Los Angeles tomorrowD.Those who want to take advantage of their skills.morning.I will have a meeting with Mr CooperC 22.Which of the following puts all of its time and fundsbefore eleven.(15)So I need to leave as early as I理into education?料can.A.Volunteer Match.B.Watsi.C.Pencils of Promise.D.Water is Life.W:There's a train every thirty minutes starting at six解A 23.What is the purpose of building facilities to treatin the morning.water?M:In that case,I'd like to leave at six.Wait ..myA.To provide clean drinking water.wife's going to drop me off here on her way toB.To encourage people to save water.work.Could you buy me a 7:00 ticket instead?(16)D.To tench peoplueifcay.BW:Sure.Will it be one-way or round-trip?C 24.Why did Dr Dituri want to stay underwater?M:Oh,I probably should buy a round-trip ticket阅A.To relax and enjoy himself.听since I'll be coming back tomorrow evening.Uh,B.To set a new world record.力is there a train at around 6 pm?读C.To find out how the pressure affects people.W:Yes,there's one at 5:40.And the other is 6:10.D.To experience a new and different way of life.料Which one would you like?理A 25.What word can best describe Dr Dituri'sM:I'll take the former one.Tomorrow is my wife'sunderwater life?birthday.I need to come home early to have解A.Busy.B.Worrying.dinner with her.(17)C.Challenging.D.Comfortable.e听第10段材料，回答第18至20题B 18.Why is The Mind different from other similar TVB 26.What happened to Dr Dituri after he returned听programs?to the surface?A.It recommends foreign books.④阅A.He started a new study with his teamB.It invites common people as guests.B.He went through several big changes.C.It has become the most popular one.读C.He found it hard to get used to old lifeA 19.What is the influence of The Mind?理D.He helped doctors treat medical problemsA.Making reading popular.C 27.What could be the best title for the text?力B.Making reading necessary.解A.High pressure influences people's healthC.Making reading educational.B.A teacher began a project to protect the oceanC.Dr Joseph Dituri lives underwater for 100C20.What does the speaker expect people to do?davsA.Be always happy.B.Attend The Mind.D.Dr Joseph Dituri made efforts to study theC.Start reading now.oceanCHave you ever read a book which is so excellentthat you want to recommend it to others?A TVC 28.What does the underlined word "opposition"in阅paragraph 2 mean?听program,The Mind,has been popular since it cameout on September 15th,2015.The Mind invites many读A.DifficultyB.Expectation.guests to talk about books that influence them most.C.Disagreement.D.Responsibility.理D 29.What is the goal of LTNs?料Not like other similar programs,all the guests invitedA.To change road conditions.are common people instead of stars.(18)Last week,B.To separate residents and cars.the guest was a 76-year-old teacher.He shared some解C.To make streets more beautifulof his personal experiences of reading books writtenD.To improve living environment.in different languages.25

令x=1,得n=(1,-6,3).…9分因为FE=(3,1,0),…10分所以点F到面CDE的距离d=ln·F它=3=346n46…12分/4622.(1)证明：圆C的方程可化为λ(.x2十y2一5)一2x一4y+6=0.…1分x=-1,=4令1-2x-4y十6=0，得v=25、得或…3分2y=5故圆C恒过两个定点，且这两个定点的坐标为（一1,2）和（号，号）…4分(2)解：当λ=1时，圆C的方程可化为x2+y2一2x一4y十1=0.由题知直线1的斜率k存在且不为0，设直线l的方程为y=k(x十1).…5分x2+y2-2x-4y+1=0,联立消去x得(1十2)y2-4k(1+b)y十4k2=0,…7分y=k(x+1),y1十2=4k(1+k)1+21新以8分4k2y12=1+△=16k2(1+k)2-16k(1+2)>0,解得k>0.9分因为1+1=M十业=1+k………………………………………………………10分所以=，解得152…11分又>0，所以=1+⑤2…12分【高二数学·参考答案第5页（共5页）】·24-99B·

1-一x1，[0,12上递增，列表如下：…1分3Wx2+45。4531+3(0,3≥5回一0+单调递减最小值单调递增3所以此人将船停在点P沿海岸正东二km处，所用时间最少.…12分备注：第2问，还可以用“t”=3(V2+4)>0,t=3x2+45在[0,12]上递增，”21.(本题满分12分)(①解：当a=1时，f()=x-l-1,…1分f0=-1,切点为(1，-，3分所以在x=1处的切线方程为y一(=-(-少，年y=+分…5分(2)证明：f(x)的定义域为{xx>0},r)=x-a-1,令f09=x-a-1=0,则x2-ax-1=0,记此方程的实数根为x,，龙2，且x1

23.I like all kinds of music.country music.It's relaxing.31.A.myselfB.herselfC.himselfD.themselvesA.actuallyB.recentlyC.especiallyD.completely32.A.weakB.scaredC.stupidD.excited24.The Great Wall is one ofman-made buildings in the world and we're all proud ofit.33.A.S0B.AndC.ButD.BecauseA.more terribleB.the most terrible34.A.in needB.in dangerC.in silenceD.in a hurryC.more amazingD.the most amazing35.A.desertB.illnessC.accidentD.earthquake25.my mom was watering the flower in the garden,my dad was reading in the study.36.A.lonelyB.luckyC.unfairD.unusualA.WhileB.SinceC.UnlessD.Although37.A.rideB.returnC.competeD.volunteer26.---How long have you had this book?38.A.cut outB.help outC.give outD.clear out--Just for five days.Iit last week.39.A.fixingB.beatingC.diggingD.cheatingA.buyB.boughtC.have boughtD.was buying40.A.mostlyB.simplyC.quicklyD.suddenly27.---What do you think of your city Nanchang?41.A.joyB.truthC.feverD.death---It a lot.It is cleaner and more beautiful than before42.A.sadB.fairC.happyD.amazingA.will change B.has changedC.is changingD.was changing43.A.bodiesB.voicesC.knivesD.scarves28.---Judy,I saw your brother at the film museum at 9 o'clock in the morning.)请先阅读下面短文，掌握其大意，然后用方框中所给词的适当形式填空，并将答案填写到答---Well,that's impossible.He my father's computer at home.题卡的相应位置。每个词限用一次。A.fixesB.will fixC.is fixingD.was fixing三、完形填空（本大题共26小题，每小题1分，共26分）show them excitedly death understand musicianhard surprised whenever mountain cheer)请先阅读下面短文，掌握其大意，然后从各小题所给的A、B、C、D四个选项中选出可以填入相应空白处的最佳选项，并在答题卡上将该项涂黑。During the Spring and Autumn Period,there lived a greatIt was a beautiful day with a clear,blue sky and the soft wind cooled my morning 2944 named Yu Boya.He played gugin very well.Many peopleEverything was quiet and the book in my hands was lovely until I felt my chair 30.I noticedenjoyed his music.Zhong Ziqi was one of them.the tea and my little round table moving.At that moment,I thought to 31,"It is anOne day,Boya came back from a trip to the mountains.Heearthquake(地震)，”Iwas32 as I ran to tell my parents..33 when I reached them,theplayed guqin 45 his love for the mountains.Zhong stoodearthquake stoppedbeside Boya when he was playing guqin.Zhong said,"How beautifully you're playing guqin!Nothing happened in the next few hours.My family and I were not 34 and our house wasWhen I listen to you playing guqin,I can almost see the 46 in front of my eyes."still standing.We watched the news about the35.The epicenter was very close toBoya was happy to hear Zhong's words.Then he played another tune ()Zhong clappedMuzaffarabad.We felt very 36 to be in the center of Kashmir.After we watched the situationhis hands and 47 again,"What a beautiful tune it is!When I listen to it,I seem to imaginein Muzaffarabad,I decided to 37 to help those people right away.hundreds of boats are sailing down big rivers."Boya was 48 at Zhong's comments ()HeI arrived in the city of Muzaffarabad with a few other volunteers.We tried to 38 thedecided to play more tunes for Zhong.49 he played a new tune,Zhong could tell what Boyapeople there.After hours of 39,we found a few people who were lucky to be alive.We 40was thinking about when he played the tune.sent for doctors to make sure that they were all right.When they met their families,they cried for"You enjoy my music and 50 my mind.You know me like a true friend,"Boya said41.That made me happy.However,not everyone had a 42 ending.We also found 43 of51.After that,Boya and Zhong became close friends.After Zhong's 52,Boya was so sad thatthose not making it through the earthquake.And I felt terrible when I saw the tears of the peoplehe broke his guqin and decided never to play it again.crying for those dead peopleThis is the story about Yu Boya and Zhong Ziqi.We can learn a lesson from it.It is 53 to29.A.teaB.foodC.fruitD.coffeefind a true friend.If you find your true friends,love 54 and cherish (real friendships.30.A.shiningB.shakingC.droppingD.changing

第2期A3版Keys及重点解析：(One possible version,完形填空1-5 CBCDA6-10 BADCA11-15 BDCAD客观题除外)导语：本文是一篇记叙文，属于“人与社会”主题语法填空语境。主要讲述作者和下棋机器人对弈后发现科技1.advanced2.An3.introduced固然强大但是永远无法取代人类，我们需要把人力4.signals5.called6.which和人工智能相结合。7.greatly8.efficiency9.applying5.A。根据下文.with its head tilting slightly to one10.betweenside and its eyes focusing on the chessboard.可知，f导语：本文是一篇说明文，属于“人与社会”主题棋机器人让作者感到“惊讶”，它就像是人类一样语境。智慧城市利用技术和数据来优化城市服务，但微倾头，眼睛盯着棋盘。仍需注重公民隐私和安全问题。11.B。根据语境可知，机器人停止了对弈，只发出故5.called。考查非谓语动词。所填非谓语动词作定语，障“警告”且表被动，故用过去分词形式15.D。根据上下文可知，作者认为我们应该将人力和6.which。考查定语从句。根据语境可知，此处是一个科技“相结合。非限制性定语从句，which指代前面的整个句子。本版内容均由Jenny提供

3亿人都在用的日福APP16.(5分)某金风冶炼厂将27个大小相同的正方体钢锭在炉火中熔化，铸成个长方体钢院。此长方休的长、宽、高分别为16cm,8cm和4cm,求原来每个正方体钢锭的棱长.（不计损牦）17.(5分)已知y与x成正比例函数关系，且当x=2时，y=4.(1)求y与x之间的函数关系式；(2)若点(a,3)在这个函数图象上，求a的值18.(5分)已知点P(2a-6,-3b+2)在第二象限，且点P到x轴的距离为5，到y轴的距离为8，求a、b的值.19.(5分)如图，在面直角坐标系中，△ABC的三个顶点都在边长为1的正方形方格的格点上.(1)画出△ABC关于y轴对称的△A,B,C,点A,B,C的对应点分别为A,B,C1;(2)在(1)的条件下，写出A,C,的坐标(第19题图)20.(5分)已知2a+1的方根是±3,1-b的立方根为-1.(1)求a与b的值；(2)求3a+2b的算术方根.八年级数学期中质量调研W-3-(共6页)

4.-How/What about having milk and bread for breakfast?-Sounds great5.-Does Anna like ice-cream?-Yes,she does.第3版Section A1.hb a n anamp e a rbPu1regst r a w berII.1.How /What about e-mailing Amy2.thinks about 3.your birthday dinner4.two fruit salads 5.next weekGrammar FocusI.1.a ping-pong bat and some/three ping-pong balls2.some rice and tomatoes /a bag of rice and some tomatoes3.milk and bread4.two watches and two dictionariesII.1.doesn't like 2.but I don't3.Does;like;Yes;he does 4.What do;have5.What fruit(s)does;likeIII.1.brothers 2.wants 3.goes 4.is5.doesn't like 6.comes 7.classmates8.parents 9.thinks 10.don't wantSection BI.1.fat 2.really 3.lunch 4.chicken 5.starII.1.One/The last question2.your eating habit(s)3.doesn't want to have;for breakfast4.ask them about 5.eats wellIII.1-5 EFGDASelf CheckI.1.sure 2.healthy 3.carrots 4.food(s)5.well6.eat 7.sports 8.me 9.but 10.thinkII.1.Eat healthy food(s)2.Fruit,some vegetables 3.Play sports often

①实验前先打开开关K通人CO2一段时间，其目的是。采用抽拉铜丝与稀硝酸反应的优点为②检验生成的气体为NO的操作是③装置D的作用是(3)NO与NH反应生成N2H的离子方程式为,该反应中氧化产物与还原产物的物质的量之比为(4)写出铵根经硝化作用直接转化为硝酸根的离子方程式：铵根浓度或PH过大都会使硝化作用减弱的可能原因为17.(14分)宏观辨识与微观探析是化学学科核心素养之一。根据所学知识，回答下列问题：(1)拟卤离子主要有CN~、OCN、SCN,性质与卤离子相似，它们相应的中性分子性质与卤素单质也相似。①已知还原性：CI-”、“

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2023~2024字T发八年级数学参考答案及评分标准一、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.D2.B3.C4.A5.C6.A7.C8.B二、填空题（共5小题，每小题3分，计15分）9.610.>11.212.1613.13三、解答题（共13小题，计81分.解答应写出过程）14.解：原式=4万-2万+5…(3分)=35.…(5分)15.解：在Rt△ABC中，∠C=90°，AC=√10，BC=22,所以AB2=AC2+BC2=(0)2+(22)2=18,(3分)所以AB=32(5分)16.解：根据题意得：6x8x4.8(cm),273则原来正方体钢锭的棱长为3 cm.(5分)17.解：(1)设y=kx(k≠0)，当x=2,y=4时，则4=2k,…即k=2,(1分)y与x之间的函数关系式为：y=2x,....(2)因为点(a,3)在这个函数的图象上，(3分)所以3=2a,…所a=号(4分)(5分)18.解：由点P(2a-6,-3b+2)在第二象限，到x轴的距离为5，到y轴的距离为8，得-3b+2=5,-(20-6)=8.解得b=-1,0=-1.…(3分)19.解：(1)如图，△A,B,C,即为所求.(5分)(2)A(1,3),C,(3,-1).(3分)(5分)八年级数学期中质量调研W-答案-1（共3页）