1分2分在Rt△BDE中，∠B=45°，BD=30DE=BD·ing=30×gin45°=15√2=BE≈21.15.3分在Rt△ACF中，∠a=15°，CF=15√2.AF=CF15/2答图1≈78.33.…4分tano tan 15方法三：如答图2，易证△ABG≌△CBG,可得∠BAGAB=0.21×80×1000=16800米，…5分∠BCG=∠DFC=∠AEB,由∠AEB+∠ABE=90°可CD=EF≈16800+21.15-78.33≈60米)1(7多M∠ABE+∠BAG=90°，可证∠AHB=90°6分3分答：加油机这80秒内飞行距离为祁个…7分电机为②答案不唯一，两架飞机的垂直距离为21.2米；加油机的飞行速度约为209米/秒.…8分21,解：(1)一题多解。4分方法一：四边形ABCD是正方形，答图2瓦时的,.∠BAD=∠ADC=∠BCD=90°，AB=CD=AD=BC(2)DH的最小值为√5-1.…5分…1分[解析】如图析，设AB的中点为O,连接OD,H0.根∠ADB=∠BDC=45°.…2分读材料得，当D,H,O三点共线时，DH有最小值，最小在△ABE和△DCF中为D0-0H=√5-1.DAB=DC,,D)∠BAE=∠CDF3,D)AE=DF.,D)△ABE兰△DCF(SAS).…3分∴∠ABE=∠DCF在△ADG和△CDG中，图析结果AD =CD,22.解：(1)四边形ADCE是矩形.…2种∠ADG=∠CDGDG DG.理由如下：,△ADG≌△CDG(SAS).…4分EC AD.AE CD.∠DAG=∠DCG…5分.四边形ADCE是行四边形44∠ABE=∠DAGCD⊥AB,'∠DAG+∠BAH=90°，LADC=90°,∠ABE+∠BAH=90°∠AHB=90°…6分四边形ADCE是矩形，方法二：如答图1，延长AG交CD于点M,易证△ADG≌(2)DE∥AC.△CDG,得到∠DAG=∠DCG,所以可证△ADM≌△CDF,可一题多解。方法一：由旋转可知CE=CE=AD,LA'E'C=90°，得DM=DF=AE;从而证得△ADM≌△BAE,即证∠AHB=90°数学参考答案第19页（共30页】

Interested in the Silk Road for many years,I've read many books about it SoI have rich knowledge of it.Besides,I can express myself fluently and clearly in English.Moreover,I'm free in August with the final exam being over.I'dappreciate it if you could give me an early reply.Yours,Li HuaOne possible version:My mind was playing ping-pong.His old and black shoes flashed through my mind.But my gaze again fell on thebrand new Penny Loafers.I was fascinated by these gleaming shoes and couldn't take my eyes off them.I was about tospend all my ten dolarsn them when I recollected Dad's worn-out shoes.The gleam of the loafers started to dull.I tookshoes of my dad's size from the clearance rack and darted to the checkout counter.I ran back to the shop and put Dad's new shoes on the seat in his car.The moment we got in the car Dad picked upthe box.When he opened it,he just stared without saying a word.A mixture of guilt and delight came from the bottom ofmy heart.He looked first at the shoes and then at me."I thought you need a new pair of shoes more than I do."I brokethe silence.Dad put his hand on my shoulder and we sat looking at each other for a moment.Nothing else was said.Dadstarted the car and we went home.BOne possible version:I knew I had to do something.The white dove and its mate had given me something to look forward to,even in mydarkest days.Now I was going to help them in return.I woke up the following morning with a plan.There was only anhour before the doves usually made their visits.I hammered a shelf into the wall next to the rubber tree and covered it withleaves to make it look like a tree.Then Matthew and I stood by the sliding glass door,waiting and hoping."It works!The birds are back!"Matthew announced.There they were-sitting on top of the shelf,adding sometwigs to the new nest despite damage from the strong wind.Three weeks later,we watched three chicks break free fromtheir shells."Chirp,chirp!"Matthew sang.I held him close and kissed him,feeling more positive and hopeful than Ihad in months.I realized all around me,life went on.And it was filled with wonders and surprises that I couldn'teven imagine.英语答案第48而（比AQ石）

照提示逐一介绍收藏爱好的情况。其次，确定时态，应使用一般现在时，但介绍自己如何开始收集时要用一般过去时；人称以第一人称为主。写完之后，要通读短文，检查语法是否正确、要点是否齐全。第27-28版Keys:七年级（上）期末综合能力提升（一）语言知识及运用第一节1-5 DBACD第二节6-10 BACBB11-15 CDBCA完形填空16-20 CBDDA21-25 CBADB阅读第一节26-29BABC30-33DCAA34-36DBD37-40 CABD第二节41-45 ECABD写作(One possible version)第一节46.friendly47.rides48.interesting49.hobbies50.spending第二节51.is good at making 52.didn't;take part in 53.providing;with54.important;toknow 55.goes on a picnic第三节Dear Mike,I was glad to hear from you yesterday.Now I want to tell you something about my ways ofprotecting the environment.First of all,saving electricity is important.I always turn off the lights and the TV when Idon't use them.Next,recycling is important,too.I usually use old boxes to make storageboxes.What's more,I also use old clothes to clean doors and windows.In fact,there aremany old things that we can reuse.Finally,I go to school by bike.Riding bikes is good forthe air.All in all,we should try our best to protect our environment.Yours,Linda【书面表达写作指导】本次书面表达要求根据提示写一封电子邮件介绍自己保护环境的方法。文章应主要使用第一人称，时态主要使用一般现在时。可适当发挥，使文章内容丰富。注意要保证行文连贯、语言丰富、表达准确且书写规范。10

Dressed in green,her dad's favorite color,Frankie entered her interview with confidence.Noel smiled very happily when Frankie received a second call later that day with news that she gotthe job.Too many young people come to YouthCare with their own story.Each of them deserves apath back to stability:a stable home,consistent support,and access to treatment servicesnecessary to become well.Like Frankie,they can imagine new possibilities and change the courseof their own story through encouragement and treatment.34.What was the main cause for Frankie's depression?A.Her desire to get a job.B.Her fear of homelessness.C.Her lessons of adolescence.D.Her inability to deal with relatives.35.How did YouthCare influence Frankie?A.She realized the value of family affection.B.She had a stable life to achieve her potential.C.She learned the importance of interview confidence.D.She built up her courage to be a mental health doctor.36.Which would be the best title for the passage?A.Frankie's Job Hunting in FitnessB.The Friendship between Frankie and NoelC.Finding the Support Needed to Move ForwardD.Looking for Reliable Relatives to the HomelessCDogs greet other dogs'noses first,sniffing()each other from head to tail.People are not soopen about the process of sniffing,but smell is important in human relations,too.There is alsoevidence that humans can infer relationship and emotional states and even discover disease throughsmell.Now,Inbal Ravreby,Kobi Snitz and Noam Sobel of the Weizmann Institute of Science havegone a step further.As they report in Science Advances,the three researchers started their firstexperiment by testing the smells of 20 pairs of familiar and same-sex friends.They employed anelectronic nose (e-nose)and two groups of human "smellers".The e-nose used a set of gas sensors to assess T-shirts worn by participants.One group ofhuman smellers were given pairs of these shirts and asked to rate how similar they smelt.Those inthe other group were asked to rate the smells of individual T-shirts on five dimensions )pleasantness,intensity,attractiveness,competence and warmth.Both approaches produced thesame result.The T-shirts of friends smelt more similar to each other than did the T-shirts ofstrangers.高二英语试卷第5页（共10页）

bills and change.It was obvious that she didn't have enough 47.So she 48 somemuch-needed goods,setting them aside.The child's items 49 in the cart,however.Thewoman finally paid,and moved down to 50 them.When my turn came,I put into my cart theitems that the woman had51out,whispering(低语)“Separate bags,same bill please”to thecashier.Then I secretly put the extra bag into the woman's cart without being 52.Just as I put thebag in the woman's cart,I 53 a twenty-dollar bill that I had not placed in there."You putthat money in there,didn't you?I asked the cashier with a laugh 54 the woman pushedher cart out of the door.55,he shook his head."No,it was the woman who stood behindyou.I stuck my twenty at the bottom,he added."That was so nice of both of you!I smiled.41.A.studiedB.impressedC.recognizedD.admired42.A.excitedB.tiredC.curiousD.happy43.A.prettyB.unusualC.cheapD.pricy44.A.screamedB.laughedC.whisperedD.called45.A.truthB.costC.reportD.news46.A.countingB.savingC.givingD.picking47.A.patienceB.timeC.moneyD.food48.A.gave upB.took overC.put awayD.picked up49.A.changedB.shookC.survivedD.remained50.A.shapeB.packC.organizeD.choose51.A.left9workedC.takenD.made52.A.caughtB.punishedC.deliveredD.scheduled53.A.placedB.noticedC.imaginedD.expected54.A.beforeB.unlessC.sinceD.after55.A.CarefullyB.ThankfullyC.SurprisinglyD.Gracefully第二节（共10小题；每小题1.5分，满分15分)阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。Tibetan antelopes live on the plains of Tibet,Xinjiang and Qinghai.Today they are 56danger.Over the past years,people 57(hunt)antelopes illegally for their valuable fur.The1980s and 1990s were bad times for the Tibetan antelopes,when the population 58(drop)bymore than 50 percent.Hunters were shooting antelopes to make profits.Their habitats werebecoming smaller as new roads and railways were built.In order to save Tibetan antelopes from extinction,the Chinese government placed 59(they)under national protection.Volunteers would watch over the antelopes day and night60(keep)them safe from attacks.Bridges and gates were added to let the antelopes move61(easy)and keep them safe from cars and trains.The measures were 62(effect).Theantelope population recovered and in June 2015,the Tibetan antelope was removed from theendangered species list.63,the government doesn't intend to stop the protection programsand will continue to protect the Tibetan antelopes.Much is being done to protect wildlife,but if we really want to save the planet 64 welive on,we must change our way of life.Only when we learn to exist in harmony with nature canwe stop being 65 threat to wildlife and to our planet.第7页

One of the best ways to control anger is to get help from others.46 So tell someone thatis close to you,a friend or a family member about your problem.When you discuss a matter withothers,there is a better chance to solve your problems.To be humorous is a good choice to be less angry.When you feel that your anger is out ofcontrol because of stress,you can use humor.47 Then you will feel better about the thingsaround youWe have to change the negalive(消极的)houghts into positive(积极的)ones.For this,youmust say "No"to all the negative thoughts in your mind first.48 When you are successful inthat,you will think only about positive things of life.A.It is also bad for the health.B.This can be done with a lot of practice.C.It can help you look at difficult things in a lighter way.D.However,it will become a problem if we can't control it.E.What's worse,what we do is to keep ourselves from the outer world.F.If you feel that you can't manage your anger,it can make more trouble.(D)请阅读下面短文，根据语篇内容，在方框内的缩写文章中，填入与短文意思最符合的单词，并将答案写在答题卡的相应位置。每空一词。Hold Fist SaluteFist and Palm SaluteNowadays,people usually shake hands when they meet each other.Do the Chinese alwaysgreet others like this?In fact,handshaking was introduced to our country around 100 years ago.There were several kinds of greeting in ancient China.Among them the fist and palm salute(was a quite common one,with a history of about 3,000 years.It was first used by peoplein the Western Zhou Dynasty.In ancient times,if people met a stranger,their hands were alwaysready for holding something used for fighting.Holding out both hands showed that people couldfeel relaxed.When people meet,men usually use their left hand to hold the right one.It's believed thatpeople considered the left as the important side for men in Chinese history.While for women,themportant side is the right.So when they give the fist and palm salute,they should put their righthand on the top.When someone presents the fist and palm salute to you,you are supposed to do itback as well.In many wuxia or kung fu TV series and movies,people greet each other with the hold fistsalute,or Baoquan in Chinese.The gesture()is that the right hand is made a fist,while theleft hand is to cover the right fist.It's similar to the fist and palm salute,but they are different.Baoquan is widely used among kungfu masters and students.So,don't make a mistake.九年级英语第6页（共8页)

常规阅读集训（Ⅲ）Section A:1-4 ACBDSection B:1-4 ACBDSection C:1-4 CABB

姓名准考证号：机密★启用前江西省2023届中考考前抢分卷数学试卷六总分累分人座位号题号四五得分说明：1.全卷满分120分，考试时间120分钟2请把答案写在答题卡上，否则不给分。如一、单项选择题（本大题共6小题，每小题3分，共18分）1.-号的倒数是0A吉B-3C.5D.-52.下列运算正确的是A.a2·a3=a5B.(a'b)=abxAC.a3÷a3=a8(D.-(a+b)-6-a-a-b3,苯分子的环状结构是由德国化学家凯库勒提出的.随着研究的不断深入，发现苯中的6个碳原子与6个氢原子均在同一面，且所有碳碳键的键长都相等（如图1）成了一个完美的六边形（正六边形），图2是其面示意图，则∠1的度数为A.1301B.120°3C.110D.60°4.第十四届全国政协增设的“环境资源界”中共有委员85人，若其人员构成如图所设每个委员只属于一个领域)，则下列说法错误的是A,环境资源领域的党政领导干部最多环境资源界政协委员人员构成统B.生态文明建设领域的科研专家有17人环境资源领生态文明建域的党政领设领域的科C.生态文明建设领域的科研专家比能源资源领导干部研专家12y40%域的企业负责人多约29.4公其他能源资源领D.其他领域的委员约占10.6%域的企业负272g【江西省2023届中考考前抢分卷·数学试卷第1页（共8页）】【o