则该氧化还原滴定指示剂为该样品中钴元素的质量分数为18.某校合作学小组的同学设计实验探究汽车尾气中CO和NO在催化剂CZSM催化下转化N2和C02的实验。回答下列问题：(I)甲组同学设计如图装置分别制备C0和NO。①若1中盛放浓疏酸，1Ⅱ中盛放H2C2042H20制取C0,则I中盛放的药品是-CO中烧瓶内发生反应的化学方程式为②若1中盛放稀硝酸，Ⅱ中盛放废铜屑，Ⅲ中盛放水，Ⅱ中烧瓶中发生反应的离子方程式为,制备时适当加热的目的是(2)乙组同学利用甲组制得的CO和NO并利用下列装置（可以重复选用）设计实验验证C0可还原NO,并检验产物CO2。湿的NO→Cu-ZMS湿的COCuo无水CaC,浓硫酸排水集气装置澄清石灰水还原NO装置AB0R①乙组同学的实验装置巾，依次连接的合理顺序为A、②装臀A的作用有(填字母)。a.千燥NOCOb.将NO和CO充分混合c.调整NO和CO的流速比d.作安全瓶③F中发生反应的化学方程式：19.某研究小组在实验室以废铜屑（主要成分是CO,含有少量的FC、Fe2O)为原料制备碱式碳酸铜[Cu(O1)2CO],具体流程如图：55-60°℃过滤、洗涤.干燥滤液Cu2(OH)CO:废屑稀硫酸30%H202调节pHNazCO;1IV过滤滤渣已知：Cu2(OH2C0,为绿色固体，难溶于冷水和乙醇，水温越高越易分解。()为加快废铜屑在稀疏酸中的溶解速率，可采取的措施为(任写一种)。第7页这年

57.development。考查名词。设空处作主语，表示这项“开发成果”，用名词，故填developmento58.used。考查动词-ed形式。设空处作后置定语，修饰名词ruler,且逻辑主语ruler与动词use之间为被动关系，故填used。59.improving。考查动词-ing形式。设空处作介词By的宾语，故填improving。60.better。考查副词比较级。根据语境和下文中的than before可知，此处表示比较意义，用比较级，故填better。.61.methods。考查可数名词的复数。method意为“方法”，为可数名词，根据语境和下文中的using patients'photographs and X-rays可知，此处表示泛指，用复数，故填methods。.62.with。考查固定搭配。together with同…一起；包括…在内。63.to take。考查动词不定式。intend to do sth.力图做某事。64.naturally。考查副词。设空处作伏语，修饰动词correct,用副词，故填naturally.65.t。考查t的用法。设空处作形式主语，句子真正的主语为后面的不定式结构，故填it。

到她对作者来说是梦想成真。【补充说明】The Nanny:《天才保姆》，是Fran Drescher导演的一部电视喜剧，在美国CBS播放。1993年11月3日始播，1999年结束，共六季。背景设在纽约曼哈顿，讲述一位犹太保姆在一户英国贵族家庭工作、生活的搞笑故事。第二节主题语境：人与自我一一做人与做事本文是记叙文。青少年发明免费的手语应用程序，让听力障碍者能够看电影。56.usually。考查副词。设空处在句中作状语，应使用副词，故填usually。57.to create。考查动词不定式。lead sb.to do sth.促使某人做某事。58.be downloaded。考查被动语态。根据语境可知，The app与download之间为被动关系，应使用被动语态，且设空处前有情态动词can,故填be downloaded。59.which。考查关系代词。根据语境可知，which引导非限制性定语从句，补充说明先行词The app,且在从句中作宾语，故填which。.60.interested。考查形容词。设空处在句中作表语，应使用形容词。根据语境可知，此处表示“感兴趣的”，故填interested。be interested in.对…感兴趣。61.our。考查代词。根据语境可知，设空处在句中作定语，修饰名词childhood,表示“我们的”，应使用形容词性物主代词，故填our。62.named。考查动词-ed形式。根据语境可知，设空处在句中作后置定语，且boy和name之间为被动关系，应使用动词-ed形式，故填named。.63.it。考查it的用法。分析句子成分可知，此处为itis+adj.to do sth.句型，设空处作形式主语，真正的主语为动词不定式短语to watch movies or TV,故填it。64.comments。考查可数名词的复数。根据该句中的系动词are可知，comment此处为可数名词，应填其复数形式，故填comments。.65.to。考查介词。access to sth..(使用某物或接近某人的)机会或权利。[本套试题复现的教材词汇有：wonder,explore,apply,post,negative,message,imagine,online,technology,experience,search,relationship,challenge,computer,author,information,change,necessity,go shopping,program,organization,popular,transport,data,quit,benefit,Internet,social media,lonely,play games,gothrough,community,inspire,tough,app,download,improve,comment,access]

-

必修二UNIT2同步评估参考答案及部分解析参考答案1-5 BCABC6-10 CAABC11-15 ACACB 16-20 BAACB21-25 CCDCB 26-30 AABDA31-35 AABBA 36-40 CGFED41-45 BADAD46-50 CBCAA51-55 BDCBA56.met 57.bigger58.for 59.nor60.driven61.organising62.immediately63.which that64.to keep65.populations写作第一节One possible version:Dear Eric,Our club will hold a learning activity about wildlife protection in the school hall next Fridayafternoon.All the members are asked to take part.First,we will attend a lecture by an expert from the city wildlife protection association,who willgive us an introduction to wildlife conservation laws.Then we will watch a video aboutendangered species.Finally,there will be a sharing session where we will share our experiencesof protecting wildlife.You've been working to save wildlife,so I believe your sharing will beinspiring.Looking forward to your coming and sharing.Yours,Li Hua第二节One possible version:Then,I knew what had happened to my article.At some point while my article was still open onmy screen,I must have left the room.While I was away,Coco came out to play!He must havedone a happy dance on the letter"n"and then flown away before I returned.When I decided toclose the window,I did so without first checking my work.So,I saved it with all those n's.Nowonder the company refused me!I edited my piece carefully,this time making sure it was perfect before closing the window.Iwrote a cover e-mail containing a heartfelt apology and explained what I thought had happened.After I sent the letter,I wondered about my wisdom.It really did sound like an excuse.However,it seemed to do the trick.A few days later,I signed my letter of acceptance to work with thecompany.【补充说明】do the trick奏效；起作用；达到目的部分解析

购买两盆Black Pearl幼苗需要花费￡24.98。23.D。理解文章类型。通过阅读全文可知，文章是一则金缕梅的促销广告，因此文章最有可能出现在一本园艺杂志中。【补充说明】l.cheerless阴冷的；沉闷的2.hardy耐寒的；能越冬的B篇主题语境：人与自我一一做人与做事本文是记叙文。几个人共同救出了困在小溪中的小鸟。24.C。理解具体信息。根据第三段中的The son,lacrosse stick in hand,started to throw some stones into thewater.He stopped short和第四段可知，男孩在朝小溪扔石头的时候发现了那只小鸟。short在文中作副词，意为“突然”。25.C。推断。根据第七段中的While climbing down the bank,.we saw the father already standing in the creek,holding his son's hand可知，男孩下水之后，他的父亲马上就跟过去帮助他。26.A。理解词汇。根据第五段中的A baby robin和There it sat,wet and shaking以及最后一段中的the tinywet thing可知，被困在小溪中的小鸟非常可怜弱小，因此可推知pathetic意为“可怜的；令人怜惜的”。27.D。理解具体信息。根据倒数第三段中的He was almost there when a large piece of underwater woodstopped his progress和倒数第二段中的Then the father was back in the creek again,lacrosse stick over hisshoulder.He held Bob's hand and passed him the stick.Bob gently collected the baby bird with its net,-根水下的木头挡住了Bob前进的道路，此时小孩的父亲递给了他球杆。最终Bob利用球杆上的网袋成功捕捉到了小鸟。因此小孩父亲拿来的球杆成为了解救小鸟的关键。【补充说明】robin:欧洲知更鸟C篇主题语境：人与社会一一社会本文是新闻报道。l3岁的Anna McCord发明了海上救生装置，成为了“年度发明人”。28.A。理解具体信息。根据第二段中的Anna McCord,I3,won a top title at the National Innovator Challengeand has become the top story in the news可知，Anna在一项国家级创新大赛中摘得桂冠，成为了新闻焦点。29.D。理解具体信息。根据第二段中的“Sea Me Here,”a device that makes anyone lost at sea more visibleto the rescue team和第三段中的increasing visibility可知，Anna发明的“Sea Me Here”装置可以帮助救援队提高海上救援效率。30.B。理解具体信息。根据第四段中的Anna said she came up with the idea for the device from her mother'spast diving experience和I improved on that when she told me about it可知，Anna发明“Sea Me Here”装置的灵感来自于她母亲的潜水经验。improve on意为“改进”。3l.C。推断。根据上文中的内容和最后一段中的Anna believes her invention has a bright future ahead可知，Anna能从自己母亲的潜水经验中获得灵感，发明救援装置，并且相信自己的发明前景光明，因此Anna是一名聪明自信的学生。D篇主题语境：人与自然一一环境保护本文是说明文。随着航运的急速增长，海洋生物需要得到更好的保护。32.B。理解具体信息。根据第二段中的The research is the first detailed survey of shipping activity in theNorth East Atlantic可知，该项研究是对大西洋东北部航运活动的首次详细调查。33.C。理解文章结构。根据第一段中的New research from the University of Portsmouth has shown a markedincrease in shipping in the North East Atlantic和第二段中的Researchers at the University of Portsmouth havediscovered that rates of shipping in the North East Atlantic area rose by 34 per cent in a five-year period,

l9.B。根据本空前的panic sets in the night before和本空后的You need to get enough sleepif you want to function properly during your exam可知，本空所讲内容应该与“考试前一晚”相关，B项符合语境。B项介绍了考试前一晚很重要，空后的You need to get enough sleepif you want to function properly during your exam进行了解释说明。20.D。根据本空前的内容Maybe you have been fine the whole time,and you haven't felt anyanxiety及本空后的Firstly,make sure that you do everything to keep you physically comfortable..Have you been to the toilet??Are you too hot or too cold?及So just focus on your exam可知，本空所讲内容应该与“考试期间的焦虑”相关，D项符合语境。D项Then you walk into theexam hall,,and it rushes over you顺接本空前的Maybe you have been fine the whole time.,andyou haven't felt any anxiety,其中，it指代本空前的anxiety。语言运用第一节主题语境：人与自然一一自然生态本文是记叙文。作者讲述了自己收养的公鸡是如何加入羊群，与它们形影不离的。2l.A。根据本句中的Because mine had died及下文中作者收养公鸡的行为可知，作者愿意收养朋友的这只公鸡。设空处所填的词应该与“愿意”具有相同或相近的含义，故选welcomed。take.in收留…。22.C。根据下文中的In the morning.bird ran out to me.The young rooster didn’t know howto socialize with the hens可知，此处表示作者把Cocoa放进鸡笼里，故选placed。23.D。木空后的bird及下文中的The young rooster均指Cocoa。根据下文中的The youngrooster didn't know how to socialize with the hens可知，Cocoa应该情绪不高，unhappy符合语境。24.A。根据本句中的I took him to the goat barn,where he settled into an empty stall可知，作者没再让Cocoa回鸡笼，Instead of符合语境。25.D。26.B。根据上文中的The young rooster didn't know how to socialize with the hens及下文中的I.him in the goats’stall,following the2-month--old kids.The three played well可知，作者本来“计划(planned)”让Cocoa学着和产蛋母鸡相处，但没想到它有自己的“想法(ideas)”,竞然和小山羊打成了一片。kid意为“小山羊”。27.C。根据本句中的following the2-month-old kids及下文中的The three played well.可知，第二天早上，作者发现Cocoa跑到了羊圈里，故选discovered。28.A。根据本句中的The three played well,.but when mama and babies headed to the grassland,Cocoa stayed behind可知，Cocoa有些胆怯，不敢跟着羊群去牧场，move into符合语境。29.D。根据上文中的Cocoa stayed behind,.too afraid to.an open field及本句中的becausehawks had caught chickens that managed to fly out of their pen可知，此处表示Cocoa的谨慎行为，carefulness符合语境。pen圈；围栏；畜栏。30.B。根据上下文语境可知，此处表示渐渐地，Cocoa长高了，也强壮了。设空处所填的词应该与“渐渐地”具有相同或相近的含义，故选Slowly。3l.C。根据上文中的I noticed him walking beside the goats as they ate grass及下文中的their.protected the bird from hawks可知，羊群愿意和Cocoa待在一起，即它们已经“接纳了(accepted)”它。32.B。根据上文中的hawks had caught chickens that managed to fly out of their pen及木句中的protected the bird from hawks可知，鹰看到Cocoa和羊群在一起后，也不敢伤害它。presence(出现；在场)符合语境。33.C。根据上文中的I needed to move new laying hens into the coop along with Cocoa及本句

句首，故填Traditionally。65.but。考查连词。not only.but also…不但…而且…。

主题语境：人与自我一一生活与学本文是记叙文。文章讲述了Maggie学日语的经历。56.ways。考查可数名词的复数。根据语境可知，way意为“方式，方法”，是可数名词，此处表示泛指，应使用可数名词复数，故填ways。57.that/which。考查关系代词。设空处引导限制性定语从句，修饰先行词activity,且设空处在从句中作主语，故填关系代词that/which。58.choosing。考查动词-ing形式。根据语境可知，设空处在句中作状语，且Maggie和choose之间为主动关系，应使用动词-ing形式，故填choosing。59.in。考查介词。interest in sth.对某事有兴趣。60.gives。考查一般现在时。根据下文中的It's.when I study可知，此处描述客观事实，表明学语言对Maggie的影响，应使用一般现在时，故填gives。61.enjoyable。考查形容词。设空处作表语，应使用形容词，表示“有乐趣的”，故填enjoyable。62.the。考查冠词。根据语境可知，此处best是名词，意为“最好的东西，最好的人”。atthe best of times在最有利的情况下，当情况最佳时，在情况最好的时候。63.extremely。考查副词。设空处在句中作状语，修饰形容词Iazy,应使用副词，故填extremely64.be finished。考查被动语态。根据语境可知，goal和finish之间为被动关系，应使用被动语态，且设空处位于情态动词should之后，故填be finished。5.to speak。考查动词不定式。be able to do sth.有能力、办法或机会做某事，能做某事。[本套试题复现的教材词汇有：hola,bonjour,language,program,study,Japanese,vocabulary,course,practice,calligraphy,experience,relate,brain,encourage,Spanish,English,second language,tongue,world,international,speech,foreign language,record,global,listen,communicate,basis,teach,history,writing,interest,goal,repetitive (repeat),grammar,attitude,billion,native,appreciate,door,amazing,chance,symbol,widely,explore,ancient,classic,reference,cartoon,primary

-