新高二学生暑假自主学习练习答案
高二语文的暑假作业试题及答案
高二语文的暑假作业试题及答案高二语文的暑假作业试题及答案1.下列图表是对汉字书写现状的调查。
请仔细阅读，完成后面的题目。
(1)从图中汉字书写的现状可以得出怎样的结论?(要求：不出现数字，字数10～20字)结论：___________________________________________________________ _。
(2)针对这一现状，请从社会和学校角度指出其产生的原因。
(要求：字数分别在10～20字)社会：___________________________________________________________ ______。
学校：___________________________________________________________ ______。
答案(1)写字机会少，提笔忘字多，书写能力堪忧。
(2)社会：平时手写汉字的机会少是造成这一现象的社会原因。
学校：语文课不重视汉字的书写，忽视纠正错别字是造成这一现象的学校原因。
2.请根据下面四个省份经济发展的数据统计表，在语段的横线处填上合适的内容，使语意完整，语句连贯。
省份项目广东省江苏省河北省福建省国民生产总值(亿元)30073.7125560.113803.58075.10增幅(%)14.514.815.015.1工业增加总值(亿元)13079.2212473.554652.63980.73增幅(%)18.318.918.919.3固定资产投资总值(亿元)9959.019163.035682.93863.01增幅(%)18.022.528.239.7广东省的经济发展与兄弟省份相比，各项经济指标在总值上均处领先地位，但(1)________________，所以，有人认为广东省应适当(2)________________，(3)______________，促进国民生产总值的增长。
答案(1)在增幅上落后于各兄弟省份(2)加大固定资产投资(3)加快工业的发展3.结合下列表格以及附注的内容，对广东省的PM2.5的基本情况作一个综述。
2021年高二下学期暑假作业英语试题(1) 含答案
一阅读理解（共两节，满分30分）第一节（共10小题; 每小题2分，满分20分）AAnne is six years older than me. Growing up, we were very poor, and my mother worked evenings at a factory in a small town. Not seeing my mother much, Anne looked after me and my younger sister. During those hard years, Anne was always there for me, not only as a big sister, but as a mother and my best friend.When I was seventeen and had no money, I thought my only chance of going to college was if I could win a scholarship. I had an important interview for such an award. Anne at that time was struggling, surviving on a part-time job as she put herself through the local munity college after serving in the army. I told her of my interview. I asked her advice on what to wear and showed her my best outfit (装束) and how I planned to be careful, how I sat so that the hole in the bottom of my shoes would not be seen, but I wasn’t sure what I would do if it rained.Anne suggested that we go shopping, and we took the bus to the JCPenney store. We found a beautiful pair of leather shoes on sale. She told me to try them on, but I thought it was just for fun as neither of us had ever owned anything that expensive before. But Anne handed me the boxed shoes and said, “Here, I’ll buy these for you.”“But . . .” was all I could say.“You deserve them,” she replied. “This interview is important. I want to see you get that scholarship.”I was speechless as I knew this was a lot of money for her, and she would probably have to eat nothing but noodles for at least a month.I went to the interview and crossed my legs so that my beautiful new shoes shone with pride. I won the scholarship and became an engineer. Although they were nice leather everyday shoes, I didn’t wear them much because they were so special. Now, after 20 years have passed, I still have that pair of shoes with me, and I just wear them on those occasions when I need to feel special.1. When the author was 17, Anne _____.A. was serving in the armyB. was continuing her studyC. was a salesgirl at the JCPenney storeD. was working in a small pany2. The author went to the interview _____.A. acpanied by AnneB. wearing a pair of worn shoesC. with confidenceD. with great anxiety3. What would be the best title for the passage?A. An important interviewB. A special pair of new shoesC. Memories of poor childhoodD. Lifelong gratitude to a friendBLooking good, feeling goodBorn to a model mom and a suit maker dad, fashion was actually in my blood.I always had a strong desire to dress in a certain way and to stand out from the crowd.Imademy own toys whenI was a young child and sewed my first skirt at just 10 years old.Afriend’s mother took one look at my skirt and told me that I should be a patternmaker. In high school I started making my own clothes, mostly changing other things because I never liked anything how it was when I bought it. During the last two years of school, I worked part-time for a small business that made hand-painted silk clothingand bags. The owner became the teacher who got me into design in the first place. Another useful bit of work experience then came when I worked at a showroom during fashion week andfound it very exciting. From there I worked at a top clothing store while I got my business started.For my business I started out with the idea that everything I did would be hand-made and one-of-a-kind, specially made for one individual who hopefully had the same tastes as me. Every morning I jumped out of bed,went to my studio and worked on my projects. This just showed how enthusiastic I felt about my work. And at night I even dreamed of new designs!Fashion design is functional art. What I mean is that it’s something close to you and something you can touch and feel, and actually interact with. My advice to any young person who wants to be a fashion designer is to get the basic skills early on, such as sewing and pattern-making. Even if you end up specializing, it’s really important to understand all aspects of design in order to make high-quality clothes.Also, if you dream of having your own clothing line, the best thing to do is start wearing your clothes. You have to try and do this because that’s the way you’re going to develop something that’s all yours andunlike anyone else’s. I pas sionately believe that the right clothing can make people feel better and give them more confidence.4. When the author was in high school, she ______.A. wore the latest fashionsB.was fondofhand-painted clothingC. began to make clothes on her ownD. dressed in the same way as her classmates5. What does the underlined word “functional” in Paragraph 4 probably mean?A. Practical.B. Standard.C. Decorative.D. plex.6. What advice does the author give to those who want to be fashion designers?A. Creating basic designs in high school.B. Wearinghigh-quality clothes all the time.C. Looking at what their friends are wearing.D. Deciding what is unique about their clothes.7. According to the author, well-designed clothes _______.A.cost people a lot of moneyB.bring people great successC. provide people with popular tasteD. helppeoplefeel sure ofthemselves第二节（共5小题；每小题2分，共10分）根据短文内容，从短文后的七个选项中选出能填入空白处的最佳选项。
2021年高二暑假作业英语试题7 含答案
M5U2 The environment编写：尹红梅审阅：唐为龙一、语法专区(一) 单项选择1. ________ his learning method, his cousin was sure that he would achievea good mark in the examination .A．Being improved B．Improved C．To be improved D．Having improved2. _________ from his looks, he is a kind man.A. JudgingB. Being judgedC. To judgeD. Judge3. When I got back home, I saw a message pinned to the door _______“Sorry to miss you; I’ll call later.”A. readB. readsC. to readD. reading4. He sent me an e-mail, _______ to get further information.A. hopedB. hopingC. to hopeD. hope5. He was busy writing a story, only ________ once in a while to smokea cigarette.A to stopB stoppingC to have stoppedD having stopped6. It is one of the funniest things ______ on the Internet so far this year.A findingB being foundC to findD found7. The flowers his friend gave him will die unless __________ every day.A wateredB wateringC waterD to water8. ________ in the mountains for a week, the two students were finally saved by the local police.A Having lostB LostC Being lostD Losing9. More and more people are signing up for Yoga classes nowadays,_________ advantages of the health and relaxation benefits.A takingB takenC having takenD having been taken10. Reading is an experience quite different from watching TV; there arepictures _____ in your mind instead of before your eyes.A to formB formC formingD having formed11. ________ the project as planned, we’ll have to work two more hoursa day.A pletingB pleteC pletedD To plete12. We had an anxious couple of weeks ______ for the results of the experiment.A waitB to be waitingC waitedD waiting13. _______ to reach them on the phone, we sent an email instead.A FailB FailedC To failD Having failed14.The meeting _______ next week is sure to be a great success.A. to take placeB. to be taken placeC. to have taken placeD. being taken place15._______ by the rade Lei Feng, we try our best to do good deeds.A. InspiredB. Being inspiredC. To be inspiredD. Inspiring16.It's no good _______ here. Let's go home.A. to waitB. waitedC. waitingD. being waited17.I listened to the wind, ______ that he would not e tonight.A. thinkingB. to thinkC. thoughtD. being thinking18.As a result of my laziness, I failed ________ my work in time.A. and finishedB. to finishC. and finishingD. to finished19.I am sorry ______ written you a letter at the time.A. to have notB. to not haveC. not to haveD. not having20.The article _________ on this subject was written by Mr. Black.A. referringB. referredC. referring toD. referred to21.Living near the sea, ___________________.A. we enjoy healthy air and beautiful sightB. healthy air and beautiful sight is what we enjoyC. it is healthy air and beautiful sight we enjoyD. so we enjoy healthy air and beautiful sight22.__________ since the night before, I felt very hungry.A. Having not eaten anythingB. Not eating anythingC. I hadn't eaten anythingD. Not having eaten anything23.We then listened to the child ________ the article ______ on the blackboard.A. read, writingB. reading, writingC. to read, writtenD. read, written24.________ it with me and I'll see what I can do.A. When leftB. LeavingC. If you leaveD. Leave25._________ such a chance, why don't you have a try?A. To giveB. Having givenC. GivenD. Giving26.We discussed the plan that we would like to see ________ the next week.A. carry onB. carrying outC. carried outD. to carry out27.Five people were reported ________ in the accident.A. to be killedB. to killC. killedD. to have been killed28.____________ , I went to the park with my uncle.A. As holidayB. Being no classesC. Since have no classesD. It being a holiday29. "Do you mind _________?" "Go ahead."A. opening the doorB. your opening the doorC. my opening the doorD. I opening the door30. I have one or two things ____________.A. to lookB. to seeC. to see toD. to look to31._________ is bad for his health.A. Mike smokingB. Mike's smokingC. Mike's being smokingD. Mike smokes32.I came into the classroom, ______ my seat and sat down to read.A. findingB. to findC. foundD. founded33.I am tired and I don't feel like _____ any further.A. to walkB. to be walkingC. walkingD. walk34.She did nothing but ________walk in the street.A. takingB. takeC. to takeD. took35.It is a problem that doesn't need ________ right now.A. to solveB. solvingC. being solvedD. to be solving36.I ________ my handbag stolen last week.A. hadB. letC. lostD. left37.________ by a crowd of people, I felt nervous, ______ what to say.A. Watching, didn't knowB. Having watched, and not knewC. Having been watch, not knownD. Being watched, not knowing （二）对比练习1. ________many times , but he still couldn't understand it .2. ________many times , he still couldn't understand it .A. Having been told .B. ToldC. He was toldD. Though he had been told3. ________to the left , you'll find the post office .4. If you ________to the left , you'll find the post office .5. ________to the left , and you'll find the post office .A. TurningB. To turnC. TurnD. Turned6. ______from space , the earth looks blue .7.______from space , we can see the earth is blue .A. SeenB. SeeingC. To seeD. See8. The dirty clothes ______ , the girl hung them up outside .9. ______ the dirty clothes ,the girl hung them up outside .A. was washedB. washedC. were washedD. having washed10 The building ______now will be a restaurant .11. The building ______next year will be a restaurant .12. The building ______last year is a restaurant.A. having been builtB. to be builtC. being builtD. built13. He stood there ______for his mother .14. ______for two hours , he went away .A. waitingB. to waitC. waitedD. Having waited二知识点回顾1. ---“Would you like to go with us for a picnic tomorrow?”---“Yes, __________.”A. I would likeB. I’d like to goC. I’d loveD.I’d like to2. If you pare food costs today ______ of a year ago, you will find thedifference.A. to thatB. to themC. with thatD.with those3. The grass has grown so tall that it needs _________.A. to cutB. to be cut itC. cuttingD. being cut4. Jerry is such a person that he can’t _______ being laughed at by others,especially by his classmates.A. hesitateB. sufferC. standD. admit5. ---“What’s made you so upset?”--- “_________ three tickets to the pop music concert.”A. LostB. LosingC. Because of losingD. Since I lost6. He advised that I ____to hospital for a medical exam, so I consider____tosee a doctor.A. should go; to goB. go; goingC. went; goingD.to go; go7.---Have you seen the headmaster today?---No, he is said _____ Yuhan on business.A. to goB. to have gone toC. to have been toD. to hasgone to8．It is required that the students _______ mobile phones in their school, so seldom ______ them using one.A．shouldn’t use; you will see B． not use; will you seeC．don’t use; will you see D．shan’t use; you will see9．The Tower of London is _______ the Church tower.A．twice high than B．two times high asC．twice higher as D．three times the height of10. —Is this stick long enough?—No, I need one _____.A. twice so longB. so long twiceC. twice as longD.as long twice11. He stood for a moment with one of his hands still ______.A. risenB. raisingC. raisedD. having raised12. Please keep on trying. I’m sure the efforts you are _______ will pay off.A. doingB. givingC. makingD. sparing13. The bus rolled into the valley, _______ ten deaths and more wounded.A. to causeB. causingC. causedD. having caused14. The discovery of new evidence resulted in _____.A. the thief having caughtB. catch the thiefC. the thief being caughtD. the thief to be caught15. The project ,______by the end of xx, will expand the city’s telephonenetwork to cover 1,000,000 users.A. acplishedB. being acplishedC. to be acplishedD. having been acplished答案：（作业7）一 DADBB DABAC DDDAA CABCDADDDC CDDCC BCCBB ADCA(D) ACC AB BD CBD AD二 DDCCB BBBDC CCBCC22419 5793 垓k25098 620A 戊\29840 7490 璐f25375 631F 挟d21972 55D4 嗔t37431 9237 鈷40556 9E6C 鹬。
高二年级双休日学生自主学习内容安排
高二年级双休日学生自主学习内容安排高二年级双休日学生自主学习内容安排（第三周）科目完成内容和时间完成情况语文一、时评一篇，不少于500字。
二、各班自主作业。
三、文科班请继续阅读《三国演义》，本周至少读至21回。
数学导学、一份综合卷（各一小时）英语学生双语报第二期以及书本workbook 的练习，时间每天40分钟。
物理1、一张练习卷45分钟，2整理教学案（串并联及焦耳定律）20分钟化学《有机化学》练习一份生物复习必修3第二章内容，每天20分钟政治一份小练习20分钟历史《同步导学》第一单元第3－4课练习地理必修班：复习荒漠化的防治；森林的开发和保护选修班：荒漠化的防治的巩固复习；地图册上中国地图的熟知高二年级双休日学生自主学习内容安排（第四周）科目完成内容和时间完成情况语文一、时评一篇，不少于500字或各班自定作文一篇。
二、周五21：50分观看CCTV新闻频道白岩松的《新闻周刊》；或周五晚22:10-22:40吉林卫视《天天五味评》；周五、周六苏州二台18:30-19:30之间的“社会传真”中的“大龙评谈”。
三、各班自主作业；四、文科班请继续阅读《三国演义》，本周至少读至33回。
数学导学、一份综合卷（各一小时）英语1.学生双语报2.创新课时训练练习（可自主选择）3.复习unit 2 新授内容物理1、一张练习卷45分钟2整理教学案（闭合电路欧姆定律）20分钟化学有机化学《阶段测试2》，50分钟生物每天复习必修3第二章,20分钟政治一份小练习，20分钟完成历史（文科）第一单元的学案；（理科）第二单元第一节《同步导学》地理必修班：复习能源资源的开发—以我国山西省为例选修班：复习能源资源的开发—以我国山西省为例，世纪金榜第二章的练习高二年级双休日学生自主学习内容安排（第八周）科目完成内容和时间完成情况语文一、时评一篇，不少于500字。
二、周五21：50分观看CCTV新闻频道白岩松的《新闻周刊》；或周五晚22:10-22:40吉林卫视《天天五味评》；周五、周六苏州二台18:30-19:30之间的“社会传真”中的“大龙评谈”；三、各班自主作业；四、复习必修二；五、文科班复习《三国演义》，期中考试考到50回。
河南省罗山高中高二化学下学期暑假自主学习考点自检测
脂肪烃 1、在密闭容器中某气态烃和氧气按一定比例混合，点火爆炸后恢复到原温度(20 ℃)，压强减小至原来的一半，若加NaOH 溶液则气体全部被吸收，则此烃为( )A ．C 3H 8B ．C 4H 8C ．C 2H 6D ．C 3H 6【答案】A【解析】设该烃的分子式为C x H y ，则C x H y ＋(x ＋4Y )O 2＝x CO 2＋2Y H 2O ，反应完全进行，又因为燃烧后，压强减小至原来的一半，则x ＝21 (1＋x ＋4Y )，即x ＝1＋4Y ，只有C 3H 8满足该等式。
2、绕月探测工程“嫦娥一号”卫星已成功完成在轨运行和探测任务，获得了大量科学探测数据，科学家对数据进行了分析，发现月球形成时可能存在稀薄的原始大气层，主要由氖、氢、氦、氩等气体组成，不含甲烷等碳氢化合物。
下列关于碳氢化合物的叙述正确的是（ ）A ．碳氢化合物的通式为C n H 2n ＋2B ．燃烧产物为二氧化碳和水的化合物一定是碳氢化合物C ．碳原子间以单键相连的烃是烷烃D ．碳氢化合物分子的相对分子质量一定是偶数【答案】D【解析】C n H 2n ＋2是烷烃的通式，A 项错误；燃烧产物为二氧化碳和水的化合物不一定是碳氢化合物，化学式为C x H y O z 的有机物的燃烧产物也是二氧化碳和水，B 项错误；碳原子间全部以单键相连的链烃才是烷烃，C 项错误；因为碳原子的相对原子质量(12)为偶数，烃分子中的氢原子个数也一定为偶数，所以碳氢化合物分子的相对分子质量一定是偶数是正确的。
3、下列有机物命名正确的是（ ）A ．3-甲基-3-丁烯B ．2，4-二甲苯C ．2-甲基-3-异丙基戊烷D ．2，3-二甲基戊烷【答案】D【解析】A 项按名称写为，命名2-甲基-1-丁烯；B 项显然错误，应是1，3-二甲苯或称为间二甲苯；C 项按名称写为，该物质应称为2，4-二甲基-3-乙基戊烷；D 项正确。
4、将0.2mol 丁烷完全燃烧后生成的气体全部缓慢通入0.5L2mol/LNaOH 溶液中，生成的Na 2CO 3和NaHCO 3的物质的量之比为（ ）A. 3：2B. 2：3 C ．2：1 D. l ：3【答案】D【解析】0.2mol 的丁烷完全燃烧生成0.8molCO 2，与0.5L×2mol/L=1mol 的NaOH 溶液完全反应，生成的Na2CO3和NaHCO3的物质的量设为x、y，根据元素守恒，可得x+y=0.8mol，2x+y=1mol，解得x=0.2mol，y=0.6mol，所以x:y=1:3，答案选D。
人教版高二语文暑假作业练习题及答案解析
人教版高二语文暑假作业练习题及答案解析【一】1.下列加点字读音有误的一项是()A.伯仲(bó)塞车(sāi)散发(sàn)锦瑟(sè)B.惘然(wǎnɡ)寂寞(mò)空白(kònɡ)古柏(bǎi)C.伺机(sì)沙渚(zhǔ)猿啸(xiào)潦倒(liáo)D.浣女(huàn)竹喧(xuān)秋暝(mínɡ)萧萧(xiāo)提示：D.秋暝mínɡ。
答案：D2.选出字形有两处错误的一项()A.渚清沙白鸟飞回，常使英雄泪满襟。
B.竹喧归浣女，莲动下鱼舟。
C.三顾频繁天下计，两朝开济老臣心。
D.楼船夜雪瓜州渡，沧海月明珠有泪。
提示：D项“州”应为“洲”，“苍”应为“沧”;A项“常”应为“长”;B项“鱼”应为“渔”;C项“繁”应为“烦”。
答案：D3.解释加点的词义不准确的一项是()A.随意春芳歇(停止)两朝开济老臣心(扶助)出师一表真名世(传名)城春草木深(到了春天)B.空山新雨后(下雨)艰难苦恨繁霜鬓(增多、使增多)镜中衰鬓已先斑(出现华发)天气晚来秋(已到秋季)C.夜深还过女墙来(城上短墙)锦官城外柏森森(形容阴森寂静)却坐促弦弦转急(退回)铁骑突出刀枪鸣(突然冲出)D.一弦一柱思华年(美妙的年代)千载谁堪伯仲间(兄弟，不相上下)无边落木萧萧下(树叶)不尽长江滚滚来(尽头)提示：C.“柏森森”形容树木茂盛繁密的样子。
答案：C4.下列名句与作者对应有误的一项是…()A.穷年忧黎元，叹息肠内热。
(杜甫)纸上得来终觉浅，绝知此事要躬行。
(陆游)人生在世不称意，明朝散发弄扁舟。
(李白)身无彩凤双飞翼，心有灵犀一点通。
(李商隐)B.露从今夜白，月是故乡明。
(杜甫)独在异乡为异客，每逢佳节倍思亲。
(王维)文章本天成，妙手偶得之。
(陆游)天意怜幽草，人间重晚情。
(李商隐)C.晴空一鹤排云上，便引诗情到碧霄。
高二语文下学期暑假作业试题18(附答案)
高二语文下学期暑假作业试题18（附答案）一基础知识1．填入下面一段文字横线处的语句，最恰当的一句是（3分）（）职责的转变与业务量的增加使得对消防员的要求也越来越高，。
新兵从一个地方青年到一个合格的消防战斗员，通过训练和实战需要半年到一年左右的时间。
除了理论知识的学习，体能的训练，心理素质也是极为重要的一项课程。
后期实战也会让新人真正深入到各种突发灾害中，让其心理素质和胆量在训练和实战中得到强化。
A．如此繁重的任务需要坚毅的性格、过人的胆量、高超的技艺才能胜任B．坚毅的性格、过人的胆量、高超的技艺才能胜任如此繁重的任务C．没有坚毅的性格、过人的胆量、高超的技艺是无法胜任如此繁重的任务的D．胜任如此繁重的任务使人必需拥有坚毅的性格、过人的胆量、高超的技艺2．在下面一段文字横线处补写恰当的语句，使整段文字语意完整连贯，内容贴切，逻辑严密。
每处不超过15个字。
（5分）全球智能手机市场需求呈现疲软态势，今年二季度出货量为3．395亿只，同比增幅15%，创6年来新低。
①，全球移动数据流量仍持续高速增长，2014年增长69%。
这一冷一热表明，智能移动②。
造成这种现象的主要原因是3G市场饱和——智能手机市场总体占有率已经较高，③；而随着“互联网+”的兴起和普及，智能应用市场有着广阔的增长空间。
3．填入下面一段文字横线处的语句，衔接最恰当的一项是（）（3分）几百年的禁书、焚书、战乱、文字狱、封建迷信等等，使文化典籍丧失无数，惟独文学名著大多无恙，至今依然生气如故，。
A．细心分析，似乎它们始终是在民间流传，已成为普通人民宝贵的精神食粮。
B．究其缘由，是因为它们始终是在民间流传，已经成为普通人民宝贵的精神食粮。
C．恐怕主要是因为它们早已成为普通人民宝贵的精神食粮，始终在民间流传。
D．推其原因，是它们已经成为普通人民的精神食粮，所以始终在民间流传。
4．依次填入下面一段文字横线处的语句，衔接最恰当的一组是（）（3分）在历史长河的演变中，艺术作为人类智慧的璀璨结晶，。
高中高二化学下学期暑假自主学习考点自检测试 难溶电解质的溶解平衡高二全册化学试题
时遁市安宁阳光实验学校难溶电解质的溶解平衡1、把Ca(0H)2放入蒸馏水中，—段时间后达到平衡：下列说法正确的是( )。
A．向溶液中加CaO，并恢复原温度时，溶液的pH升高B．给溶液加热，溶液的pH升高C．向溶液中加入Na2CO3溶液，其中固体质量增加D．向溶液中加入少量NaOH固体，Ca(0H)2固体质量不变【答案】C【解析】A、加入CaO后，平衡逆向移动，Ca(0H)2固体质量增加，但温度不变，此时溶液仍是饱和溶液，所以溶液的pH不变，错误；B、Ca(0H)2的溶解平衡为放热反应，所以升温使平衡逆向移动，氢氧根离子浓度减小，溶液的pH减小，错误；C、向溶液中加入Na2CO3溶液，钙离子浓度减小，使平衡正向移动，Ca(0H)2固体转化为CaCO3固体，固体质量增加，正确，D、向溶液中加入少量NaOH固体，氢氧根离子浓度增大，使平衡逆向移动，Ca(0H)2固体质量增加，错误，答案选C。
2、一定温度下，向含有AgCl（s）的饱和AgCl溶液中加水，下列叙述正确的是（）A．AgCl的溶解度增大B．AgCl的溶解度增大，K sp不变C．C（Ag+）增大D．AgCl的溶解度、K sp均不变【答案】D 【解析】解：加入水多，溶解的氯化银质量多，AgCl的溶解度是指一定温度下，100g水中溶解AgCl的最大质量，与加入水的多少无关，所以加入水后氯化银的溶解度不变；AgCl的Ksp只受温度影响，所以温度不变，AgCl的溶解度、Ksp不变，故选D．3、已知，常温下，K SP(AgCl)=1.8×10-10mol2·L-2，K SP(AgI)=8.3×10-17mol2·L-2，下列叙述中，正确的是（）A. 常温下，AgCl在饱和NaCl溶液中的K SP比在纯水中的K SP小B. 向AgCl的悬浊液中加入KI溶液，沉淀由白色转化为黄色C. 将0.001 mol·L-1的AgNO3溶液滴入KCl和KI的混合溶液中，一定先产生AgI沉淀D. 向AgCl的饱和溶液中加入NaCl晶体，有AgCl析出且溶液中c(Ag+)=c(Cl-)【答案】B【解析】4、下表是3种物质的溶解度（20℃），下列说法中正确的是（）物质MgCl2Mg（OH）2MgCO3溶解度（g/100g）74 0.000 84 0.01A．已知MgCO3的K sp=6.82×10﹣6 mol2·L﹣2，则所有含有固体MgCO3的溶液中，都有c（Mg2+）=c（CO32﹣），且c（Mg2+）·c（CO32﹣）=6.82×10﹣6 mol2·L﹣2 B．除去粗盐中含有的MgCl2杂质，最佳除杂试剂为Na2CO3溶液C．将表中三种物质与水混合，加热、灼烧，最终的固体产物相同D．用石灰水处理含有Mg2+和HCO3﹣的硬水，发生的离子反应方程式为Mg2++2HCO3﹣+Ca2++2OH﹣═CaCO3↓+MgCO3↓+2H2O【答案】C【解析】A、c（Mg2+）·c（CO32﹣）=“6.82“×10﹣6，但不一定都有c（Mg2+）=c （CO32﹣），A错误；B、溶解度：Mg（OH）2＜MgCO3，故除去粗盐中含有的MgCl2杂质，最佳除杂试剂为NaOH，C错误；C、MgCl2+2H2O Mg （OH ）2+2HCl，加热MgCl2溶液，平衡向右移动，最后打破平衡，蒸干后得到Mg（OH）2，灼烧Mg（OH）2，Mg（OH）2分解得到MgO，MgCO3+2H2O Mg（OH）2+H2CO3，加热MgCO3溶液，平衡向右移动，最后打破平衡，蒸干后得到Mg（OH）2，灼烧后，也得到MgO，故三者最终的固体产物相同，B正确；D、用石灰水处理含有Mg2+和HCO3﹣的硬水，发生的离子反应方程式为Mg2++2HCO3﹣+2Ca2++4OH﹣=2CaCO3↓+Mg（OH）2↓+2H2O，D错误；故选C．5、现在含MgCl2、AlCl 3均为n mol的混合溶液，向其中滴NaOH溶液至过量．加入NaOH溶液的物质的量与生成沉淀的物质的量的关系正确的是（离子形成沉淀或沉淀的溶解与溶液pH的关系如下表）离子Mg2+Al3+物质Al（OH）3开始沉淀时的pH 8.93 3.56 开始溶解时的pH 8.04完全沉淀时的pH 10.92 4.89 完全溶解时的pH 12.04（）A． B．C．D．【答案】C【解析】当Al3+完全沉淀时，溶液的pH=8.04，而镁离子开始沉淀的pH=8.93，则Al3+完全沉淀时Mg2+还没有开始沉淀；即：当Mg2+开始沉淀时，已经有部分氢氧化铝开始溶解；镁离子完全沉淀的pH=10.92，、氢氧化铝完全溶解的pH=12.04，则当Mg2+完全沉淀时，氢氧化铝还没有完全被溶解，所以正确的图象应该是C；故选C．6、下列说法正确的是( )A．将密封有NO2的玻璃球浸泡在热水中，气体颜色会变浅B．向K2CrO4溶液中加入稀硫酸，溶液颜色由橙色变为黄色C．向盛有0.1mol/LMgCl2溶液的试管中加入NaOH溶液，有白色沉淀生成，再滴入0.1mol/L FeCl3溶液，沉淀最终变为红褐色D．向盛有Na2CO3溶液中的试管加入酚酞试液，溶液呈红色，再加入足量BaCl2溶液，产生白色沉淀，溶液仍然呈红色【答案】C【解析】解：A、反应2NO2N2O4是放热反应，加热平衡向逆向移动，颜色加深，不选A；B、反应Cr2O72-+H2O2CrO42-+2H+，加入硫酸，平衡逆向移动，颜色从黄色变为橙色，不选B；C、由于氢氧化铁的溶度积小于氢氧化镁，所以氢氧化镁白色沉淀可以和氯化铁反应生成氢氧化铁红褐色沉淀，选C；D、碳酸钠溶液中由于碳酸根离子水解而使溶液显碱性，加入氯化钡，碳酸钠和氯化钡反应生成碳酸钡沉淀和氯化钠，溶液的碱性减弱，颜色变浅，不选D。
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新高二学生暑假自主学习练习答案Keys to 练习一单选：1-5 ACACD 6-10 ACCDC 11-15 ADCBA16-20 ADDBC完形：1- 5 BDCAA6-10 DBBCC 11-15 DBDAC 16-20 ADBCB阅读：1-4 ADCB 5-8 BDDA任务型阅读：1. being/becoming 2.enjoying 3.protect/keep 4.washing 5.worried6.influence/effect7.too8. value/importance9.Overcoming 10.activities 词汇检测：1. personally 2. hesitate 3. stressed 4. relief 5. confused/considering同义转换：1. height 2. frozen 3. understand 4. whispered 5. made句子翻译：1.By the sense of responsibility, we mean the realization of one’s task, duty or obligation.2.Students should recognize their duty and should be blamed if they fail to carry out their duty.3. Duty calls for the students to study hard，which makes me pick up my courage, face the difficulties and accept the challenge.4.Although the sense of responsibility brings me pressure and worry, yet I should be thankful for it because it encourages me to go on.5.To have a good position in society in the future, I must be responsible for everything I do.动词填空：1. suffering 2. informed 3. (should) broadcast 4. changing 5. will have saved6. was caught7. preferred8. limited9. starving 10. was bent短文填空：1. hungry 2. However 3. Instead 4. owe 5. accept6. left7. up8. where9. in 10. name11. through 12. Dressed 13. recognized 14. determined/decideded 15. attention16. won 17. wrote 18. afraid 19. off 20. spreadKeys to 练习二单选：1-5 BABDA6-10 CCADB 11-15 CADCB 16-20 BADAA完形：1-5 CBDAB 6-10 CDDAB 11-15 ABCDC 16-20 CABCD阅读：1-4 BADD 5-8 DAAB任务型阅读：1. Purpose/Aim/Goal 2. steps 3. competition 4. replaced 5. managed6.twice/double7. allowing8. look9. similar 10. age/grow词汇检测：1.depends 2.opposite 3. embarrassed 4. contributes 5. convenient同义转换：1. interrupt 2. consisting 3. influence/affect 4. regret 5. realized句子翻译：1. The English language was originally formed on the basis of the languages of small tribes inNorthern Europe.2. The success of the programme has contributed greatly to the current interest in pop music.3. I reached a point in my career where I had to decide which way to go at that time.4. Traditional Chinese sports are similar to Western sports in that both are meant to improve people’s health.5. Despite the fact that French did not replace English as the first language, it still had an impact on the English language.动词填空：1. makes sense 2. be related to 3. to have covered 4. added to 5. to be/being stared at6. compared to7. can’t help8. has made great achievements9. afford 10. reached out短文填空：1. weak 2. However 3. tears 4. as 5. dark/darkness6. about7. since8. growing9. control 10. to11. fault 12. felt 13. Where 14. grow 15. Why16. preferred/chose 17. By 18. though/although 19. courage 20. understoodKeys to 练习三单选：1--5ADACA6--10BBCAC 11--15BAACC 16--20ACBDB完型: 1-5ACBDA6-10 DBACA11-15 CDBCD 16-20 ABCDB阅读:1—4 CDCD 5-8 CDAB任务阅读: 1. Tips 2. place 3. Without/ No 4. Special 5. set6. positive7. Expressed8. children9. Help 10. Celebrate词汇检测:1. burying 2. declared 3. cultural 4. gradually 5.destroyed同义转换:1. interests 2. Similarly 3. existed 4. remained 5. performed/conducted/done翻译句子：1. Confucius greatly influenced / had a great influence upon the development of China’s culture and education.2. The desert was once a green land with huge trees, but they were cut down and that resulted in the city being buried by sand.3. People are wondering who is going to take over the company when the president of the board retires.4. The desert was once a green land with enormous trees, but even that didn’t prevent the city from being buried by sand.5. Not only was Rome a city and a republic, but it was also to become the capital of one of the largest empires in history.动词填空：1. be informed of 2. depends on 3. are banned 4. looking up 5. differs from6. dreamed/dreamt of7. care about8. taken control of9. was adopted10. taken into consideration短文填空：1. dying/eager 2. tired 3. heavy 4. away 5. when6. held7. another8. felt9. so 10. handed11. forehead 12. what 13. across 14. happier 15. lucky16. as 17. meant 18. offer 19. kindness 20. chanceKeys to 练习四单选：1---5 DAADD 6—10 BCCAA11—15 CAACC 16—20 AACCA完型: 1--5 BACAD 6--10 DCACC 11--15 DCDAB 16--20 ABBAD阅读: 1—4 BADA5-8 BCDD任务型阅读: 1. process 2. presentation 3. judge 4. consideration/account 5. compare 6. detail 7. familiar 8. information 9. Dress 10. confident词汇检测: 1. available 2. persuasive 3. intended 4. tricked 5. promote同义转换: 1. appeals 2. fall 3. determined 4. recommended 5. beneficial翻译句子：1. A commercial advertisement is one that someone has paid for to promote a product or service.2. This disease is quite common to the old but ninety percent of the patients can be cured of thedisease.3. His father meant him to be an engineer but he was never meant for an engineer.4. There are lots of different ways to get your message across when you are putting together an ad campaign.5. Y ou may want to ask yourself what parts of this product your target buyers would care about or be concerned with.动词填空：1. get it across 2. deals with 3. fell for 4. is; used to 5. to put; together6. was satisfied with7. trick; into8. was aware of9. appeals to 10. committing suicide短文填空: mercial 2. promote 3. service 4. intended/meant 5. welfare6. lies7. customers8. serve9. lead/live 10.satisfy/meetKeys to 练习五单项选择：1-5 BDAAB 6-10 DBDAC 11-15 CCBDC 16-20 DCBDA完形填空：1-5 BDACD 6-10 AADAB 11-15 BDCCB 16-20 CACAB阅读理解：1-4 DACB 5-8 CBCA任务型阅读：1. While/Though/Although 2. weight 3. forced 4.exercise 5. lose6. tired7. provided8. suffer9. containing 10. reducing/losing词汇检测：1. competing 2. absence 3. Involved 4. ensure 5. balanced同义转换：1. attempted 2. significance/importance 3. briefly 4. remove 5. considered/recognized/ regarded句子翻译：1. No matter what difficulties we meet with, we will try our best to overcome them.2. Michael Jordan is recognized as one of the most famous NBA superstars in the USA.3. Their dream was that the Olympic Games would make it possible for countries and people to live side by side in peace.4. His suggestions played a leading role in the rapid development of the company.5. These are some of the Olympic athletes who have brought joy to people across the world withtheir attempts to push the boundaries of human achievements.动词填空：1. results in 2. been aware of 3.was invited 4. glanced at5. decorated with6. poured out7. rose up against8.broke down短文填空：1. gather 2. August 3. where 4. regions 5. power6. achieved7. international8. including9. impressed 10. promise。