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10.下列关于煤、石油、天然气的说法不正确的是A.利用煤的气化可以获得可燃性气体H2和CO2B.天然气可作为化工原料用于合成氨和生产甲醇C.煤的干馏、石油的裂化和裂解都发生了化学变化D.石油通过分馏可获得汽油、煤油、柴油等含碳原子少的轻质油11.《黄帝内经》中记载：“五谷为养，五果为助，五畜为益，五菜为充”，以上食物中富含糖类、蛋白质、油脂等丰富的营养物质。下列说法正确的是A.淀粉和纤维素互为同分异构体B.纤维素和油脂在人体小肠内均可通过酶的催化发生水解反应C.抗病毒疫苗冷藏存放是为了避免蛋白质受热变性D.糖类、蛋白质、油脂都是由C、H、O三种元素组成12.如图是海水提溴的工艺流程。下列有关说法不正确的是酸和氯气二氧化硫和水溴的蒸气冷凝吹吸蒸出海水鉴塔溴化氢热空气溶液夏气和液澳水蒸气A.在海水中加“酸和氯气”，氯气的作用是中和海水中的碱性物质B.“吹出塔”处热空气的作用是将生成的溴吹出C.“吸收塔”中发生的离子反应为Br2十SO2十2HO=4H++SO+2BrD.以上流程中“吹出塔”和“吸收塔”内的反应是为了富集海水中的溴13.下列实验操作能达到实验目的的是选项实验操作实验目的将海带灰溶于水，过滤，向滤液中滴加淀粉溶液检测海带中含有碘元素B将SO2通入滴有酚酞的Na(OH溶液中，溶液红色褪去证明S○，的漂白性取5nmL0.1mol·LKI溶液，滴加0.1mol·L1CFeCl溶液3mL,充分反应，根据溶液中既含l2,又含I探究化学反应的限度的实验事实，判断该反应是可逆反应向硅酸钠溶液中通人CO2气体，有白色沉淀产生验证H2CO3的酸性强于H:SO,14.在某2L恒容密闭容器中，充入4 mol NH和3molO2发生反应：4NH,(g)+3O2(g)三2N2(g)十6H,O(g),4min后测得O2的物质的量分数为20%，下列说法中不正确的是A.4min时，NH;的转化率为50%B.4min时，H2O(g)的体积分数为50%C.04min内，v(N2)=0.125mol·L-1·min-1D.若NH;在纯氧中燃烧，化学能不可能全部转化为热能【高二化学第3页（共6页）】24026B

基础题与中考新考法·九年级·全一册·数学第2课时变化率问题和销售利润问题(共53考：单独29考，在函数题中涉及24考)重难题解法》答案见本册P91。变化率问题35考·现学活用·练1某款电子产品前年单例1（教材P22第7题改编）由于耕种和灌溉技术的升级，我个的成本是4000元，由于国水稻产量逐年增长.某农业县2020年种植水稻的农田产量产品技术革新，成本逐年为9000kg/公顷，2022年种植水稻的农田每公顷的产量比下降，今年单个的成本仅2020年增长了1890kg.假设每年种植水稻的农田每公顷产为前年成本的81%量的增长率相同，则该农业县水稻农田每公顷产量的年均(1)求该款电子产品单个增长率为成本的年均下降率；引导思路设该农业县水稻农田每公顷产量的年均增长率为(2)若要求今年该款电子产x,则2021年每公顷的产量为kg,2022年每公顷的产品的利润率不低于25%，求量为kg,再结合2022年种植水稻的农田每公顷的产今年单个产品的最低售价量比2020年增长了1890kg,可列方程为解题通法均变化率问题的求解思路：关于均增长（下降）率问题，设基数为a,均增长（下降）率为x,增长（下降）n次后的量为b,则次增长（下降）后的值a(1±x)两次增长（下降）后的值a(1±x)2中考早知道在选填题中考查列方程或求变化率，在解答题中求变化率进行计算或结合不等式考查，●销售利润问题8考例2某水果商以每斤15元的价格批发一批樱桃，再按每斤25练2某摄影器材租赁公司元的价格到市区销售，均每天可售出200斤，经过调查发共有器材50套，经调查，现，如果每斤樱桃的售价每降低1元，那么均每天的销售量当日租金为每套200元会增加15斤，为了尽快减少库存，该水果商决定降价销售，时，可全部租出，当租金每提高5元，租出去的器材若水果商销售樱桃每天获利1560元，每斤樱桃的售价应定为就会减少1套多少元？（其他成本忽略不计)(1)当租金提高多少元时，引导思路设每斤樱桃应降价x元销售，则实际售价为元，该公司的每日收益可达到销售量为斤，每斤可获得利润为元，再根据10120元？“总利润=销售量×单件利润”及每天获利1560元，可列方程为10

41.中.费聋多词辨桥精A.9帅y密伴：ho因8：C四do9掴转酊：知住低：20涕弟都会告诉你的那样，有一个哥哥意味着在别人的阴影下行走，尤其是当你有一个典型的“酷”哥哥的时候。英语试题参考答案一242.A。考查形容词辨析及语境。A.cool酷；B.curious好奇的；C.humorous幽默的；D.generous慷慨的。句意同上。43.A。考查形容词辨析及语境。A.brilliant聪明的；B.short矮的；C.stupid愚蠢的；D.honest诚实的。句意：多年来，我想做我聪明的哥哥泰森所做的一切，但无论多么努力，我总是那个隐形的人。44.B。考查形容词辨析及语境。A.striking惊人的；B.invisible无形的，隐形的；C.promising有前途的；D.calm冷静的。句意同上。45.D。考查动词短语及语境。A.put up with忍受；B.make up to巴结；C.hold on to抓住不放；D.keep up with不落后。句意：我本来可能会在我高中生涯的剩余时间里继续努力跟上他的步伐，但当我的家人搬家后，一切都改变了。注意：54空后的句子“I didn't feel as though I needed to be neck and neck with anybody else”是解题关键，beneck and neck with sb.意为“并驾齐驱，不分上下”。46.D。考查动词辨析及语境。A.happened发生；B.worked运转；起作用；C.slowed放慢速度；D.changed改变。句意同上。47.B。考查动词辨析及语境。A.behave表现，守规矩；B.redefine重新定义；C.please取悦；D.abandon抛弃；放纵。句意：泰森去上大学了，所以我得自己去一所新学校。这个新的开始让我有机会重新定义自己，并发现了一个全新的“酷”的版本。注意：51空后的“definition”是解题关键。48.A。考查名词辨析及语境。A.version版本；B.doubt怀疑；C.strategy策略；D.beginning开始。句意同上。49.C。考查动词辨析及语境。A.imagine想象；B.skip不参加；C.try尝试；D.repeat重复。句意：我不知道是什么让我决定在新学校尝试一些新的活动，但有一天我碰巧参加了奥林匹克科学队的课后会议。50.A。考查动词辨析及语境。A.chanced碰巧，偶然；B.dreamed梦想；C.refused拒绝；D.failed失败，未能做。句意同上。5l.C。考查名词辨析及语境。A.advantages优势；B.lectures讲座；C.interests兴趣，爱好；D.meetings会议。句意：我一直对化学、生物和数学很感兴趣，但因为这些兴趣不符合泰森对“酷”的定义，我从来没有追求过它们。注意：上文的“had always been fascinated with.”是解题关键。52.C。考查副词辨析及语境。A.often常常；B.occasionally偶然；C.never从不；D.once曾经；一次。句意同上。53.D。考查名词辨析及语境。A.duty责任；B.apology道歉；C.credit赞扬；D.reason原因。句意：这一天，出于某种原因，我做到了（追求它们）。54.B。考查形容词辨析及语境。A.ashamed羞愧的；B.connected联系的；C.opposed反对的；D.exposed暴露的。句意：当我们组织团队、准备资料、练回答问题时，我感觉自己和同伴们比之前参加的任何体育团队都更紧密地联系在一起。注意：下文的“understood'”和“It was so good to feel accepted”是解题关键。55.B。考查名词辨析及语境。A.elders老年人；B.peers同龄人；C.scientists科学家；D.teachers教师。句意：我不觉得自己需要和任何人并驾齐驱；我终于和志同道合的人在一起了。56.D。考查副词辨析及语境。A.generally通常；B.anxiously不安地，忧虑地；C.carelessly粗心地；D.actually竟然；实际上。句意：能因为自己擅长的东西而被接受，感觉太好了。这是我人生中第一次居然觉得自己很酷。57.A。考查动词辨析及语境。A.know知道；B.guess猜测；C.wish希望；D.pretend假装。句意：现在我知道我是谁了！58.D。考查名词辨析及语境。A.story故事；B.journey旅行；C.goal目标；D.identity身份。句意：我是泰森的弟弟，但那只是我身份的一部分。我也有自己酷的一面。59.B。考查形容词辨析及语境。A.sad伤心的；B.relieved放心的；C.embarrassed尴尬的；D.eager渴望的。句意：当我知道“酷”的定义比我以前认为的要广泛得多时，我松了一口气。6O.C。考查形容词辨析及语境。A.fresher新鲜的；B.briefer更简单的；C.broader更广的；D.tighter更严格的，更紧的。句意同上。6l.its。考查形容词所有格。根据后文名词overall box-office earnings(总的票房收入)可知应填形容词所有格its。62.a。考查冠词。increase为可数名词，因此填a。63.expansion/,expanding。考查词性转换。根据with这一介词短语结构可知本空缺名词。64.turning。考查非谓语。此处表结果，用现在分词turning合适。65.earlier。考查形容词比较级。根据后文than和句意可知。66.or。考查either..or..词组。根据前文句意“在过去，它要么从一月下句延续到二月上句，要么全都在二月”可知，填or。英语试题参考答案一37n1n女本北田五⌒1hh词主一“士△他站”句产7由影hhL处士△二年.次h园佳

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五、补全对话（每小题1分，共5分）请阅读下面对话，根据对话内容从下面方框内的七个选项中选择五个填人空白处，使对话通顺、合理，意思完整，并在答题卡上将其序号涂黑。一空一句。Alan and Betty are talking on the phone.Alan=A,Betty-B)A:What did you do during your vacation,Betty?3:78☑Wow!So what did you do there?Well,we ate out a lot.T 79 How delicious the food is!I put on five pounds!Haha!Yes,the food in Hong Kong is delicious.What else did you do?80Hong Kong is a great place for shopping!What was the best part of the trip?81There were visitors from all over the world celebrating the festival together!I'm planning a trip to Hong Kong next year.I wonder whether June is a good time.Yes,if you want to see the boat race.But it's quite hot in June.82Oh,I don't mind hot weather.OK.Then I think that June would be a perfect time for you to visit Hong Kong.I went shopping,of course.That's one thing I don't like.also like the food very much.visited my aunt and uncle in Hong Kong.It was the celebration for the Dragon Boat Festival.think that we ate at least five meals a day!May not the best time to visit Hong Kong.书面表达(15分)每个人都会面临不同的压力，我们应该正确面对它并设法缓解压力带给我们的负面情绪。阅读理解B部分讲述了学生们通过“嘻哈疗法”缓解压力的故事。请你根据下面提示，写一烟文短文，谈谈你在面对压力时的做法。写作要点：1.What do you think of pressure?2.An experience of yours about dealing with pressure.3.Your advice on pressure.要求短文应包括提示中所有的写作要点，条理清楚，行文连贯，可适当发挥；短文中不能出现真实的人名和地名；词数80一120。

听第8段材料，回答第11至13题。M:Actually,it's great!After the trip,I'm going to11.Why is the woman going to New Jersey?do some voluntary work.(15)I want more lifeexperiences.A.To work there.W:Wow!You'll wear yourself out!You know,it'sB.To go sightseeing.听so easy to get burned out,so I value the time toTo see her parents.rest.12.Which state is the man from most probably?M:Of course rest is valuable,but we are young!A.New Jersey.Wyoming.C.New York.We can do anything we want in life!13.What does the man think of travelling byW:True.I plan to take my time to discover it.I'mtrain?not doing it all in one summer!(17)铃Expensive and fast..B.Cheap and fast.M:Come on!Try something now!Dancing,C.Expensive but slow.cooking,painting,anything!Just let me know ifyou change your mind!听力材料Text8听第10段材料，回答第18至20题。M:Emma,Mark says you are going to New York18.Who is the speaker talking to?this July.Is that true?A.Space tourists.听W:Well,he's not completely right.I am going toB.NASA astronauts.New Jersey to see my parents.(11)But I'll leave力Space club members.on the morning of August 10th.19.What disappointed Eugene most in his life?M:I see.How long will you be there?A.He married at a very young age.W:Six months.He was unable to go to the moon.M:That's a really long time.C.He didn't prepare well for NASA's tests.W:And I want to see as many places as I can.First,20.How many of Eugene's achievements areI'll visit the Yellowstone National Park inmentioned?Wyoming.You grew up in Wyoming.(12)舟Three.B.Four.C.Five.听力材料Text10Can you tell me how I can travel there?Hello,everyone!This is the weekly meeting ofM:By car.The roads there are all in goodour club.By now,we've learnt a lot about spacecondition,and you'll see more.from some famous astronauts and scientists.(18)力W:But I can't drive.Is there any other way toToday,we'll hear something different-the storytravel?力of Eugene Shoemaker.He got married in 1951.TenM:Travelling by bus is cheap.You can also takethe train if you like.It's a little expensive,butyears later,NASA decided to send a man to themoon,and Eugene was excited.But after somemuch faster.(13)W:Thank you very much.tests,they found Eugene had an uncommondisease.There was no possibility of him reachingthe moon.The news was the greatestdisappointment of Eugene's life.(19)听第9段材料，回答第14至17题：14.What will the speakers do tomorrow?He felt like his goal had suddenly disappeared.A.Go camping.衡Take the exam.Still,Eugene's life was full of bigC.Have a good sleep.听achievements.He spent a lot of time training力15.What is the man going to do after the trip?astronauts like Neil Armstrong.He helpedVolunteer somewhere.力create a new field of space science.HeB.Learn to dance.discovered something new with his scientist wifeC.Do some readingand the scientist David Levy.(20)16.How does the man sound?Eugene's life came to a sudden end in a carA.Nervous.B.Stressed.Excited.accident in 1997.However,his story didn't end17.What are the speakers mainly talking about?费Summer plans..up there.And I'm going to share it with youB.Life experiences.Ways to relax.next time.Thanks听力材料Text9M:After I finish tomorrow's exam,I'm setting off第一节Aright away.(14)I'm going camping and hiking.W:Don't you want some time to rest first?阅21.Which place is the most suitable for the力M:Nope!I'm ready to go out and enjoy summer!beginners of kayaking?What about you?(17)A.Bartram's Garden.W:Well,I prefer to rest by sleeping in,hanging理Boston Harbor Islands.out with friends and reading.We work so hardC.Charles River.D.Clark Fork River.during the school year.22.What is the advantage of Charles River forM:And that's why I plan on staying as active askayakers?possible!得Its calm water.B.Its unique location.W:That sounds stressful to meC.Its Watertown dam.D.Its proper length.4

大一轮复学案数学13.解析(1)为了判断两个函数模型：y=α(i)由已知得P(A1B)=40P(AIB)式.故选D.+Bx2,y=e的拟合效果1008.21600解析先排5只鸡，会产生6个只需要判断两个函数模型：y=a+Bu,v=10空隙，再从3只兔子中选2只捆绑排列，最入x+t的拟合效果即可=1001后将剩下的兔子排列到6个空隙中，故共设山，和y:的相关系数为r1,x,和u:的相又P(AIB)=6090有AAA2=21600种方案关系数为210P()=1009D根据“回文数”的特点，只需确定前3由题意得，所以R=P(41B.PAB-6位即可，最高位即万位有9种排法，千位P(AIB)P(AIB)和百位各有10种排法，根据分步乘法计,(u:-D(y:-y)数原理，共有9×10×10=900种排法，其中T,=第十章计数原理、概率、各位数字相同的共有9种，则所有5位数A2(y:-y)随机变量及其分布中是“回文数”且各位数字不全相同的共260第一节两个计数原理、排列与组合有900-9=891种.故选D150×2≈0.8710.D若乙和丙在相邻两天参加服务，则不1.AD对于A,从10个人中选2人分别去种树和扫地，选出的2人有不同的分工同的排法种数为AA=240,若乙和丙在相邻两天参加服务且甲安排故有顺序，是排列问题；对于B,从10个人在第一天参加服务，则不同的排法种数2-中选2人去扫地，选出的2人没有顺序」(v.-0为AA4=48是组合问题：对于C,从30名男生中选出由间接法可知，满足条件的排法种数为1810×2=0.9,5人组成一个篮球队，选出的5人没有顺240-48=192.故选D.序，是组合问题：对于D,从5,6,7,8中任11.36解析因为每个小区至少安排1名显然2>T1>0取两个不同的数进行幂运算，顺序不一同学，所以4名同学的分组方案只能为因此从相关系数的角度，模型y=e"的样，计算结果也不一样，是排列问题故1,1,2,所以不同的安排方法共有拟合效果更好选AD.(2)建立v关于x的经验回归方程，由y=2.A分三步，先插第一个新节目，有7种插C4·C·C.A=36种，e"得，lny=Ax+t,即v=Ax+t,法，再插第二个新节目，有8种插法，最后A号插第三个新节目，有9种插法，故共有7×812.120解析根据题意，知红色至少要涂2个圆，则红色可以涂2个圆或3个圆，18×9=504种不同的插法100=0.18,3.B根据题意首先从3名学生中选2名学分2种情况讨论：生报同一项目，然后从3个项目中选2个①若红色涂3个圆，则红色只能涂第1，t=D-A元=5.36-0.18×26=0.68，项目进行排列，故不同的报名方法种数为3,5个圆，此时有3×3=9种涂法；②红色涂2个圆时所以v关于x的经验回归方程为：=C·A=18.故选B.4.C第一步：选出的志愿者中没有女生的若红色涂第1,3个圆，则有3×3×2=180.18x+0.68,即1ny=0.18x+0.68,即所求情况共C:=4种，只有一名女生的情况共种涂法，回归方程为y=e18r+a若红色涂第1,4个圆，则有3×2×3=18C2C=12种；(3)若2021年盈利额为500亿元，种涂法」第二步：将三名志愿者分配到三项比赛中则500=e018✉+0.68若红色涂第1,5个圆，则有3×2×2=12的情况共有A=6种.种涂法，即ln500=0.18x+0.68所以不同的选择方案共有(12+4)×6=96因为ln500=3n5+2n2≈6.213，种故选C若红色涂第2,4个圆，则有3×3×3=27种涂法，所以x≈30.74，5.B首先从5人中选出2人作为一组，再所以预测2021年的研发资金投入额为若红色涂第2,5个圆，则有3×3×2=18与其余3人一同分配到4个不同的岗30.74亿元.种涂法，位上，若红色涂第3,5个圆，则有3×2×3=1814.解析（1)由列联表得，X故有CA=240种不同的分配方案，故种涂法，n(ad-bc)2选B此时共有18+18+12+27+18+18=111种(a+b)(c+d)(a+c)(b+d)6.B由题意，知从5日至9日，有3天奇数涂法200×(40×90-60×10)2日，2天偶数日，第一步，安排偶数日出行=24>6.635,综上，共有9+111=120种涂法50×150×100×100每天都有2种选择，共有2×2=4种不同的13.C一共有7个数字，且其中有两个相同所以根据小概率值α=0.01的独立性检选择；第二步，安排奇数日出行，可分为两的数字1这7个数字随机排列，可以得验，认为患该疾病群体与未患该疾病群类：①选1天安排甲的车，共有C;×2×2=体的卫生惯有差异12种不同的选择；②不安排甲的车，每天飘42520个不同的数字当前两位数(2)(i)证明：由题意得R=P(B1A都有2种选择，共有2×2×2=8种不同的P(BIA)选择综上可得，不同的用车方案种数为4字为11,12时，得到的数字不大于3.14，此时有2A=240个不同的数字，则大于×(12+8)=80.P(BIA)P(AB)P(A)P(AB)7.D若4人均去西湖茶经楼，则有1种参3.14的不同数字的个数为2520-240=P(BIA)P(A)P(AB)P(A)2280,故选C观方式；P(A)_P(AB)P(AB)若有3人去西湖茶经楼，则从4人中选择第二节二项式定理P(AB)P(AB)P(AB)3人，另外1人从另外3处景点中任意选1.D因为(1-2x)的展开式的通项为T又P(AIB).P(A1B-P(AB)择一处，有CA}=12种参观方式；=C5·1·(-2x)=C;·(-2)x,则xP(B)若有2人去西湖茶经楼，则从4人中选择的系数为C·(-2)3=-80.故选D.P(AIB)P(AIB)P(B)P(AB)2人，另外2人从另外3处景点中任意选P(AB)P(B)P(AB)P(AB)择一处，有CAA=54种参观方式；P(B)P(AB)P(AB)P(AB)若有1人去西湖茶经楼，则从4人中选择1人，另外3人从另外3处景点中任意选展开式的通项为所以R=P(AIB.P(AB)择一处，有C4A1A3A;=108种参观方式P(AIB)P(AIB)综上，共有1+12+54+108=175种参观方T-c(日）广=c,当4-2=0，即586·

听力材料听第10段材料，回答第18至20题。Text 8第M:There you are at last,Susan!I'd given you up.第B)18.Where might you hear this talk?Where have you been?A.On the radio.B.On television.W:I had to go to the police station because I'veC.At a meeting.lost my handbag.(11)(A)19.What is the speaker avoiding?分M:I'm sorry to hear that.Was there anything分A.The hard snow.important in it?B.The flying rubbish.听W:Yes!All my valuables.My ID card,several听C.The strong wind.bank cards,my wedding ring,and all the papers(C)20.Why does the speaker warn listeners?I need for work.A.The shopping mall is falling down.M:Oh,that's terrible.What happened exactly?B.The listeners may get caught in the rain.gC.The area is being hit by a terrible storm.听力材料W:I was with a friend all morning and we had第lunch together.After that,I went shopping.And第Text 10when I wanted to buy something,I couldn't findGood afternoon,everyone.This is SteveThompson.Now,I'm at the square in front of the部分my bank card.Then I remembered that it was inmy handbag.(12)City Shopping Mall.As you can see,the wind is soM:So you went to the police station directly?分strong that I can hardly stand here.(18)Also I amW:No.I called my friend's office first.trying not to get hit by the hard snow.(19)To be听M:OK.I think you should go to the restaurant听honest,it really hurts.The storm is so terrible thatsome trees are blown down and most flowers arewhere you had lunch and look for it.W:You are right.I'll telephone the restaurantdestroyed.So if you are even thinking of comingoutside today,don't.Believe me,the weather willright away.(13)get much better tomorrow.听第9段材料，回答第14至17题。(B)14.How does the man feel about working from home?第A.Bored.B.Excited.C.Tired.(B)15.How did the man get support last year?⑧第Wow!Did you see that rubbish can flying by me?(18)It is really dangerous to be outside at theA.By meeting his workmates face to face.moment.According to the weather station,theB.By having online meetings with the manager.C.By holding team online meetings every week.wind is expected to reach the speed of 75 to 86 mph分(A)16.Who helped the man to feel less overworked?分by early evening.Fortunately,the shower of hardA.His manager.B.His family.snow will turn to rains long before that time,at听C.His friends.(C)17.Why does the man mention the company in听about 5 in the afternoon.I've never seen a worseShanghai?storm than this one in the last ten years.So pleaseA.To encourage the woman to work from home.stay indoors today if you can.(20)B.To ask the woman to get a job in the company.C.To show the advantages of working from home.听力材料Text 9第一节第W:You look so excited.(14)Any good news?第AM:Yeah.I never have to go to the office again.ItMost readers probably feel worried about climate(means I can work from home.(14))change.There's so much information about what'sW:But then you won't meet your workmates facegone wrong,and everything that has to change,and how分to face.Wouldn't you feel lonely then?Besides,雾quickly we need to do it.If you don't know where towhat would you do when you need guidance orstart,the book Things You Can Do can help you!听support?(15)M:Well,when we worked from home last year,myAbout Eduardo Garciamanager had weekly online meetings with读The book is written by reporter Eduardo Garcia.people.That was very helpful.(15)I also hadGarcia is a firm believer in the power of individualchoices to effect change.strong relationships with my workmates becausewe had team meetings every two days.W:That's great.But you know,when I startedAbout this book第working from home,I felt overworked.第The book opens with a story about a small birdM:I felt that way at first,but I discussed it with mythat is trying to put out a forest fire.The othermanager.He then got some more people to help.animals say it's useless,but the bird replies,"I'm部(16)You need to take time for yourself and yourdoing the best I can."Garcia follows up on this,family.分writing,"If each one of us reduces the carbonW:I guess so.听M:In fact,some companies are asking their peopleemissions (related with our lifestyles,it'll goto work from home.I read that a company ina long way toward fighting climate change."TheShanghai reported saving about $2,000 a month读book starts with talking about weather,climate,on rent.And people worked more productively.and greenhouse gases,and what could cause them.So it was a win-win for both sides.(17)P

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