第一篇：九U7--9单元的复习题
九年级英语期末Unit7---9复习题
1、places where….(…的地方)
译：我喜欢去一些人们待人确实有好的地方。I love places _______ the people are really friendly.2、It’s best for sb to do…（某人最好做某事）
It’s best to travel with someone who can translate things for you.(同义句)You ______ ______ ______ with someone who can translate things.3、would like to do….(想做某事)；be willing to do…(愿意做某事)（）He’d like_____ good grades, but he’s never willing _____ hard.A.getting;workingB.get;to workC.to get;to workingD.to get;to working
4.make… + adj.for sb.to do sth.译：你已经提供帮助使我拥有“幸运”一事成为可能。You have helped make ______ ______ ______ me ______ ______ ― Lucky‖.5、（动名词作主语）译：当一名志愿者真棒。______ a ______ ______ ______.6、hope to do(希望做)
7、…be done(……被做)
People played that kind of football in the old days.(变成被动语态)______________________________________________.8、be made +(不同介词)
This kind of paper is made_____ bamboo_____ writing with_____ ancient China.(填入适当介词)友情提醒
同学们在复习过程中，须注意：
1、注重Unit8“提供帮助”句型的表达。
2、重视几组同义词（组）的替换。
3、加强对两单元中5篇文章的熟读。
4、不规则动词表的识记。
5、重视主动语态和被动语态在几种常见时态中的转换。
6、变被动语态的几种特殊情况。分层达标、当堂训练题
A级过关题
一、单项选择
(A.help outB.give awayC.hand inD.hand out
(A.builtB.setC.startD.come up with
(A.coachedB.guidedC.showedD.helped
(A.supported the whole cityB.cheered up the whole cityC.let the whole city downD.gave the whole city some hope
（A.EspeciallyB.For instanceC.In a wordD.generally speaking（）6._____ is an expensive place but the wine is not expensive.A.New YorkB.HKC.Mexico CityD.Paris
()7.Confucius was born in Qufu.He was _____.A.a writerB.a thinkerC.an educatorD.B and C()8.Which of the followings belongs to France?
A.Florida beachB.Niagara FallsC.Amazon jungleD.Notre Dame Cathedral()9.At first Kate considered_____ to her, but later decided to see her.A.writeB.writingC.talkingD.talk
()10.What _____ did he say?A.otherB.elseC.anotherD.the other()11.--Hong Kong is a very_____ city, and I want to visit it this fall.–Have a good trip.A.boringB.outgoingC.fascinatingD.tiring
()12.– How are you getting an with your study?--______, thank you.A.Pretty goodB.Not at allC.Quite wellD.Never mind
()13.--May I stop here?--Of course you can.You can stop your car on_____ side of the street.A.anotherB.neitherC.bothD.either
()14.--Does Xiao Ming always work hard?--Yes.So it is_____ for him to pass all his exams.A.toughB.unusualC.naturalD.difficult
()15.—Would you like me to call a taxi for you?--____.But my drive is coming to meet me here.Thank you all the same.A.Yes, pleaseB.No, I needn’tC.I think soD.It’s very kind of you
()16.Not only_____ she_____ Yang Ming, but also she likes Liu Xiang.A.does;likeB.I;likeC.did;like D.do;like
()17.--Dad, my CD player_____.–Don’t worry.Let’s go and have it repaired.A.is missingB.is brokenC.was stolenD.was lost
()18.–It’s impolite to_____ those people who are in trouble.– I agree with you.A.take inB.help outC.look afterD.laugh at
()19.If you don’t know how to spell a new word, you’d better_____.A.look up a dictionaryB.look at a dictionaryC.look it up in a dictionaryD.look for it in a dictionary()20.–What a heavy rain!--So it is.I prefer_____ at home_____ on such a rainy day.A.watch TV;to go outB.watch TV;go outC.watching TV;to going outD.to watch TV;going out（）2 1.Which of the followings was invented earliest?
A.A calculatorB.A computerC.A telephoneD.A car()2 2.Potato chips were invented by mistake by a chef called_____.A.George CrumB.Jayce CoziarC.Chelsea LanmonD.a group of college students from the USA()23.Basketball was invented by_____ called James Naismith.A.an AmericanB.a CanadianC.an ancient ChineseD.a German
()24.The Berlin Olympics of the year1936 were remembered by people all over the world because_____.A.a basketball team from China first took part in the Berlin Olympic Games B.American NBA players won that game for the first time.C.the first basketball game in history was played in the Berlin Olympics
D.basketball became an Olympic event in history for the first time in Berlin（）25—I hope _____play basketball tomorrow.----Yes, I __________.A.him not to;hope not, tooB.he won’t;hope it ,tooC.he won’t;hope so,tooD.him to not ；hope that,too()26_________would you like to live in?
Which cityB.WhichC.WhenD.Where
()27.Could you please______the window？ It’s too cold outside.A.openB.openingC.not openD.not to open()28.I dreamt_______the house that I used to live in.A.forB.withC.ofD.To
().29---Jill,we’ll have_______training with the dog.---Great.That’s what I’m expecting.A.six monthsB.a six-monthsC.six months’D.six month’s 30.---Did you go to Jack’s birthday party?-----No.I______.A.am not invitedB.wasn’t invited C.haven’t invitedD.didn’t invite 31.The boy was often heard ______happily in her room.A.singB.to singC.singingD.sings 32.Ball playing___________.A.could be more interesting.B.would teach the young men how to play games.C.Would make the young men how to play games
33.I’ll go to see my grandpa in Harbin ____next week.A.somesimeB.some time C.sometimes D.some times
34.Sorry,we don’t have the coat________you need.A,what B.who C.whom D.which
35.---Who’s the little baby in the photo,Jim?
----It’s me.This photo_________ten years ago.A.takesB.is takenC.took D.was taken
二、单词拼写
1、I hope you can_________(提供)us with some information about the seven-day-trip to Beijing.2、My father knows the man who was__________(邀请)to the party yesterday.3、We should try our best to make as few mistakes as possible when we speak English, or we won’t make ourselves___________(明白)
4、She imagined______(走进)into her husband’s office and wanted to tell him she considered_______(支持)him completely.5、It is one of the most famous__________(教堂)in Europe.6、Did you know one of the most popular drinks—tea was_________(发明)by accident?
7、The emperor noticed that the leaves in the water _________(发出；产生)a pleasant smell.8.With the___________(发展)of computer science, more and more work will be done by computer.9.Mary,could you__________(拿来)me my glasses？
10,The football match was so__________(令人激动的)that we all enjoyed it.三，句型转换
1.What would you like to do ?(同义句)What___you________to do ?
2.The weather is not too hot and it is not too cold,either.(同上)
3.It took Davie two hours to work out the difficult proble(同义句)
4.The boy is training the dog to jump over the wall.(改被动语态)
5．划线提问)
四．翻译
1.明年夏天我考虑去北京（consider）
2.我希望学校给我提供一套住房。（provide）
3我们是心甘情愿的努力学习（be willing to do sth）
5.放假的消息使每个同学都振奋（cheer…up）
6.领导必须想出办法出解决水的问题（come up with…）
7.她不仅是我们的老师也是我们最好的朋友（not only…but also）
8.电脑被用来学习的。（be used for….）
9.我们学校图书室的书的数量是一万册（the numer of….）
10.他长得像他爸爸（take after）
B级过关题
(A)
A: Good morning.___________________________________ B: Good morning.I’d like to buy an MP5 for my English study.A: We have many types here.Some are made in China and some are made in other countries.B: This one looks nice.________________________________
A: It’s made in Japan.B: ________________________________A: 2,000 yuan, it’s a new type.B: Wow.That’s too expensive.I can’t afford it.Do you have an ordinary one? A: Sure._____________________________It costs only 300 yuan.B: Well.That one looks very good and the price is OK.Is it made in China?A: Yes.It’s made in Shanghai.B: OK.____________________________(B)
A:What do youusually do in your spare time?
B:87 __________________________.A:Well,watching movies is really a relaxing thing.88______________________? B:I like action movies and thrillers.The other day I watched a movie called 2012.A:What’s it about ?
B:It’s about a terrible disaster（灾难）happening on our earth.Our world is almost ruined(毁灭)in that movie.A:89 __________________________.Do you believe this? B:Not really.But it sure reminds(提醒)us to care about our earth.A:90 ___.Only then can we get through any difficulty together.B:That’s quite important.91 __________________________?A:Yes.I’d love to.What will you show me this time ? B:How about Transformers Ⅲ ? A:Great,let’s go.任务型阅读
(A)
An eight-year-old child heard her parents talking about her little brother.All she knew was that he was very sick and they had no money.heard her daddy say to her tearful mother,“ Only a miracle can save him now,” the little girl went to her bedroom and pulled her money from its hiding place and counted it carefully.―He’s really , really sick and I want to buy a miracle.‖ ―Pardon?‖ said the salesman.― My brother Andrew has something bad growing inside his head and my daddy says only a miracle can save him.So how much does a miracle cost? ‖ ― We don’t sell a miracle here, child.I’m sorry, ‖ the salesman said with a smile.(2)A well-dressed man heard it and asked, ―What kind of a miracle does your brother need?‖ ―I don’t know.‖ she answered with her eyes full of tears.― He’s really sick and mum says he needs an operation.But my daddy cannot pay for it, so I have brought all my money.‖ ― How much do you have? ‖ asked the man.― $ 1.11, the price of a miracle for your little brother? ‖ He took up the girl’s hand and said, ― Take me to where you live.I want to see your brother and meet your parents.Let me see if I have the kind of miracle you need.‖ That well-dressed man was Dr Carlton Armstrong, a famous doctor.The operation was successful and it wasn’t long before Andrew was home again.How much did the miracle cost?
1、（1）句中operation的汉语意思可能是__________
2、将(2)处译成中文。__________________________________________________
3、In the eyes of the little girl , a miracle might be some_________ _________.(每空一词)
4、From the text , we know the poor boy_________ _________ at last.(每空一词)
(B)
The car was invented just a century age.You may know the names of all kinds of cars, but manypeople don’t know who was the inventor of the first car.The first car was invented not by a German, but by an American.His name is Henry Ford.Henry Ford was born in a poor family.He was the eldest of the six children.When he was a child, he became in a machine shop for two dollars and fifty cents a week.In the evenings he mended watches for another dollar a week.At that time there was another interest in the life of the young Ford.He dreamed to make a machine.It could run without a horse, and so it was named ―horseless carriage(无需马拉车)‖Later Henry Ford founded the Ford Motor Company(福特汽车公司).He was really the inventor of the first car in the world.1、根据(1)句，完成下面句子。(每空一词)His mother died_______ the _______ of twelve.2、根据(2)句，完成下面句子。(每空一词)He_______ _______ strong and able by the hard life.3、将(3)处译成中文。__________________________________________________
4、根据短文内容，完成下面句子。(每空一词)
Henry Ford was interested in_______ _______ mending machines_______ _______ making machines.
第二篇：九上U 6全单元教案
英语（九年级上册）Unit 6 TV programmes
Task
I.Teaching aims and learning objectives By the end of the lesson, students should be able to: 1.learn to make an outline before writing;2.learn to create a simple TV drama script.II.Teaching contents 1.New words and phrases: gun, twin, burglar, receive a message, ask for help, call the police，three men in police uniforms, with guns in their hands, be pushed into a minibus, open the back door of …
2.New structures: The twins saw three men in police uniforms coming out of the building with guns in their hands.III.Focus of the lesson and predicted area of difficulty Teach the students how to create a TV drama script.IV.Teaching procedures Step 1 Lead-in T: Do you like watching drama series? Now let’s watch a short video first.(Show drama series to the students)
What do you think of the drama series? S: They are exciting/interesting/humorous …
T: Do you know this man? He is good at writing stories.He wrote the TV drama script for the Modern Family.Because of his good writing, we can enjoy such exciting drama series.【设计意图：通过电视剧引出编剧，让学生对于本课的写作任务有初步的认识。】
Step 2 Learn about the outline 1.Learn about the background.T: Look, Millie is writing a TV drama script for a competition.To write a good TV drama script, she made an outline before writing.Now let’s take a look at the first half of her outline.How many parts are there in the outline? What are they? S: There are two.They are the background and the story.T: Read the background first.What information can be introduced in this part? S: We can introduce characters, time, place, events and so on.T: Read the background carefully and answer these questions.(1)who: the twins Justin and Luke;their friend Sarah(2)when: one day(3)where: The twins were at home.Sarah lived in Hill building.(4)what: The twins received a message from Sarah, who was asking for help.There were some burglars in Hill Building.【设计意图：通过分析outline，帮助学生逐步形成认识，为下面的写作做好铺垫。】 2.Learn about the story.T: What happened then? Read the outline carefully and answer these questions.(1)What did the twins do after they received the message? They called the police at once and then ran there quickly.(2)What did they see when they got there? They saw three men in police uniforms coming out of the building with guns in their hands.(3)What happened to the twins then? They were pushed into a minibus.(4)What did they do on the bus? They tried to use a knife to open the back door of the minibus.【设计意图：让学生阅读story，回答问题，为下一步的阅读任务打好基础。】 3.Help Millie finish her writing.T: Can you help Millie finish the first half of the story? 4.Learn about ways to write a good beginning.T: After reading the first paragraph of the story, do you want to know what happened next? S: Yes.T: So remember that a good writer should catch readers’ attention in the first paragraph.【设计意图：关于电视剧本开头部分的写作给学生提出一点建议，为接下去的写作做铺垫。】 5.Learn about ways to write a good story.T: What did the twins do in the story? S: a.called the police b.ran to Hill Building at once c.saw three men in police uniforms coming out of the building with guns when they arrived there d.thought...e.ran towards the three men f.tried to stop them from leaving g.were pushed into a minibus T: After reading these sentences, what do you think of the twins? What kind of people are they? S: They are helpful and brave.T: So remember that a good writer can make readers know what the characters are like by their actions, thoughts, appearance and speeches.【设计意图：罗列故事主体部分，帮助学生更清楚地了解电视剧剧本的写作特点和方法。】 T: The twins were pushed into a minibus.It seemed that they were trapped and in danger.However, it was clever of them to take a knife with them.Isn’t it surprising? Can they open the back door with the knife and get away from the minibus? S: …
T: Remember that a good writer often describes what happens, what the characters do and where the turning points are to attract readers’ attention.What’s more, he or she often chooses two or more scenes for the story.【设计意图：通过创设开放性问题引发学生的思考和讨论，为接下去续写故事做准备。】
Step 3 Writing 1.Help Millie finish the rest of her story.T: Can the twins get away from the minibus? If they opened the back door, what would happen next? If the burglars found them opening the back door and stopped them, what would happen next? Let’s have a discussion and continue Millie’s story.T: Let’s share our stories together.【设计意图：写作任务分两步开展，其一是续写故事。经过之前的诸多铺垫，此时的续写已经水到渠成。教师在学生中抽取故事在全班分享，使学生能够互相取长补短。】 2.Tips for creating an interesting story.T: Here are some tips for creating an interesting story.If you are interested in creating your own TV drama script, you can follow these tips.3.Show some pictures to the students and ask them to write a story about them.T: Look, here are some pictures.Can you create a TV drama script according to these pictures? As a good writer, you’d better make an outline before writing.Today we learn to create a TV drama script and continue Millie’s story.After class, can you finish your TV drama script? If you are interested in it, you can also create your own TV drama script.By writing you learn to write.【设计意图：写作任务二是看图编写故事。受课堂时间的限制，教师可安排学生在课堂上列出写作提纲，在课后完成写作任务。】
V.Homework 1.Review the different ways to create a TV drama script;2.Finish the TV drama script according to your outline.
第三篇：五年级上册数学复习题九
复习题九
1、解方程
X÷11.6=540.5x+6.8x=91.2
58x+4.6×2=18.84(x-2.1)=75.22、解决问题
1、牡丹江森林资源丰富，威虎山国家森林公园总面积是34.5万公顷，比三道关国家森林公园面积的8倍还多2.5万公顷，三道关国家森林公园面积是多少万公顷？
2、响水大米是享誉国内外的绿色保健大米，因其生长在火山玄武岩石板地上而得名。有一块近似平行四边形的稻田，底156米，高270米。如果每公顷产大米7500千克，那么这块稻田可产响水大米多少千克？
3、王老师买了《哈利波特》和《作文起步》各4本，共花了341.6元，《作文起步》单价71.9元，问《哈利波特》每本多少元？
4、一间教室宽6.5米，长是宽的1.8倍，如果这间教室有48名学生，那么平均每名学生占地多少平方米？（结果保留两位小数）
第四篇：第二单元复习题
第二单元复习题
爬山虎小队制
一.看拼音，写词语
Shūsànsǎngzhiliǔtiáodǒngdezǐyuē
()()()()()
Fǎnchúfânghuánglìzhīchāzidìji
()()()()()
Chāngkuàihuàn rán yì xīnjīn jīn yoǔ weìshū sànyuâdúā
yí
()()()()()()
tùziàozhōuchāng jǐng lùlánzìmùjiānxīmiânǎlǐ
()()()()()()()
二，课文内容填空。
1、《背课文》讲述“我”小时候背课文（）；（）；
（）的三段经历和感受，表达了对童年学生生活的（）之情。
2、《钟楼读书》以（）为线索，通过介绍在（）的经历，与
读者分享（），表达（）的感情。
3、《意外》是篇（）的散文。文章记叙了“我”（）并在第二年的生日（），这两件表达了“我”对
（），赞扬了高尔基（）的品质。
三，用下面面的关联词填空，然后再造句。
因为···所以···、···所以···、··· 因为 ···
1，（）国宝熊猫很稀有，（）我们要保护它。
2，知识的海洋是辽阔无边的，()学习是无止境的。
3，北极的冰川正在慢慢融化，（）全球的气温升高了。
①。
②。
③。
四，语言实践。
1、按要求填写词语。
手不（）（）博（）群（）专心（）（）
字斟（）（）互相（）（）各抒（）（）
囫（）吞（）望文（）（）（）（）取义
我发现：。
我还知道好的读书习惯的词有：（）
我还知道不好的读书习惯的词有：（）
用带点的关联词写句子，再写出他们的关系。
①因为掌握了科学的学习方法，所以他学习效率提高了
②知识的海洋是辽阔无边的，所以学习是无止尽的。
③安徒生老爷爷坐在马车上，脸上好像有一种宽慰的微笑，因为他已经知道国王和小臣仆们
赶到城里去了。
④上面的关联词都是关系的关联词。
五，补充句子。
读书之法。（宋——朱熹《性理精义》）
博观而约取。（宋 —— 苏轼 《送张琥》）
六、默写古诗《江畔独步寻花》。，这首诗是代诗人写的，表达了的感情！
七，阅读。
（1）多背一些名篇，储存在记忆里，在一次次的（）中，不断地加深着（），就好像牛儿吃下草，经过多次（），慢慢地（），慢慢地（）。
⊙按原文填空
⊙我们背诵名篇，就像，牛儿多次，我们对名篇要一次
次；草儿被牛儿，名篇被我们。
⊙联系自己的学习、生活实际，说说你对这段话的理解。
（2）这座钟楼现在四面都是玻璃窗，从玻璃窗里我们都能看到木塔和远处的荔枝林，越过
荔枝林能看见我们家乡的大海和兴化湾，那里有许多船。有一天我忽然想起来了，我要是能
够从兴化湾乘船出发到安徒生老爷爷的故乡奥登塞去看看有多好啊！接着我就从奥登塞再出
发向北航行去看看爱斯基摩人的渔村，到了晚上便住在他们有雪覆盖的屋子里。说不定能够
从窗口看到美丽的北极光呢！
①用“”画出作者身边实在的景物。用“~~~~~”画出作者想象的内容。
②作者的想象大胆丰富而又符合实际，从“安徒生老爷爷的故乡奥登塞到爱斯基摩人的渔
村，再到美丽的北极光”都深深的吸引着我们。由此可见，新奇丰富合理的想象来源于。
③联系前文不同的阅读内容充分表现了那种读书乐趣，请连线。
读童话故事欣赏美的风景，增长知识
读不同的风土人情了解历史，丰富阅历
读人物传记有趣、好玩
第五篇：金属单元复习题
金属单元复习题
1.某新型“防盗玻璃”为多层结构，每层中间嵌有极细的金属线，当玻璃被击碎时，与金属线相连的警报系统就会立刻报警。“防盗玻璃”能报警，这利用了金属的（）A.延展性B.导电性C.弹性D.导热性 2.关于合金的说法正确的是（）
A.合金是一种纯净物B.合金中只含有金属元素
C.合金的强度、硬度一般比组成它们的纯金属更高，抗腐蚀性能等也更好 D.铁锈是一种合金
3.铁丝在空气中灼热发红，但不能燃烧，这一事实与下列哪一因素关最密切（）A．铁丝的表面积B．氧气的浓度C．燃烧区的温度D．铁的着火点
4.人类开发利用金属单质的年代与金属活动性顺序有着某种联系，因此，人类开发利用金属的年代最迟的金属是（）A.铜B.铁C.铝D.铅
5.我国在春秋战国时期就懂得将生铁经退火处理得到相当铸钢的器具(如锋利的宝剑)，生铁退火处理的作用是（）
A.除硫、磷杂质B.适当降低了含碳量C.渗透合金元素D.改造表面结构性质 6.把一块硬币投入稀盐酸中，过一段时间后溶液变成浅绿色，说明硬币中含有（）A.铝B.镁C.铁D.银
7.X、Y、Z三种金属及化合物间发生如下化学反应：Y+ZCl2===Z+YCl2X+ZCl2===Z+XCl2 Y+2HCl===YCl2+H2↑X与稀盐酸不反应。则X、Y、Z三种金属的活动性由强到弱的顺序是（）A.Z＞Y＞XB.X＞Y＞ZC.Y＞X＞ZD.Y＞Z＞X
8.用实验比较铜、铁的金属活动性，直接使用下列试剂不能达到目的的是（）A.硫酸亚铁溶液B.硝酸银溶液C.盐酸溶液D.硫酸铜溶液
9.在10-9～10７ m范围内，对原子、分子进行操纵的纳米超分子技术往往能实现意想不到的变化。如纳米铜颗粒一遇到空气就会剧烈燃烧，甚至发生爆炸。下列说法正确的是（）A.纳米铜属于化合物 B.纳米铜无需密封保存
C.纳米铜与普通铜所含铜原子的种类不同
D.纳米铜颗粒比普通铜更易与氧气发生反应
10.5角硬币的外观呈金黄色，它是铜和锌的合金，市面上有人用它制成假金元宝行骗，小明同学用一种试剂揭穿了他。小明一定不会用的试剂是（）A.硫酸铜溶液B.硝酸银溶液C.盐酸D.硝酸钠溶液
11.锂电池是新型的高能电池，以质量轻、电容量大，颇受手机、手提电脑等用户的青睐。某种锂电池的总反应可表示Li+MnO2==LiMnO2。以下说法正确的是（）
①该反应中Mn的化合价发生了变化 ②该反应属于化合反应 ③LiMnO2为新型的氧化物④LiMnO2为锂、锰、氧的合金
A.①②B.①③C.②③D.③④
12.向ZnSO4和CuCl2的混合溶液中加入过量的铁粉，等充分反应后，过滤、洗涤、干燥，得到滤渣，则该滤渣中含有的金属是（）
A.Zn、FeB.Zn、CuC.Fe、CuD.Zn、Fe、Cu
13.常温下，下列各组物质中相互间能发生化学反应的是（）A.碳和氧气 B.铜和硫酸锌溶液 C.铝和氧气 D.氧化铜和水 14.下列有关铁及其化合物的转化关系中，不能实现的是（）A.Fe--Fe3O4B.Fe2O3--FeCl3C.Fe--FeSO4D.Fe(NO3)--3FeCl
315.有A、B两块等质量的铁，将A浸入稀硫酸中，将B浸入硫酸铜溶液中，过一会儿同时取出晾干，两块铁的质量mA、mB应该是（）A.mA＜mBB.mA＞mBC.mA=mBD.mA≥mB
16.某同学想用实验证明FeCl3溶液显黄色不是Cl-造成的，下列实验无意义的是（）A.观察KCl溶液没有颜色
B.向FeCl3溶液中滴加适量氢氧化钠溶液，振荡后静置，溶液黄色消失 C.FeCl3溶液中滴加适量无色硝酸银溶液，振荡后静置，溶液黄色未消失 D.加水稀释后FeCl3溶液黄色变浅
17、将等质量的ABC三中金属，同时放入三份溶质质量分数相同且足量的稀盐酸中，反应生成氢气的的质量与反应时间的关系如图所示。根据图中的信息，可以得到的正确结论是（）提示：ABC三种金属在化合物中都显+2价。A：放出H2的质量是A＞B＞CB：金属的活动顺序是A＞B＞C
C：反应速率最大的是AD：相对原子质量是C＞B＞A18、向AgNO3，Cu（NO3）3,Zn（NO3）3的混合溶液中加入一些铁粉，反应完全后过滤，下列情况不可能存在的是（）
A、滤纸上有Ag、Cu、Fe，滤液中有Zn2+、Fe2+B、滤纸上有Ag、Cu、，滤液中有Zn2+、Fe2+ C、滤纸上有Ag、Cu、，滤液中有Cu2+、Zn2+、Fe2+ D、滤纸上有Ag、Cu、Fe，滤液中有Cu2+、Zn2+、Fe2+
19.经过课外学习发现，锰（Mn）也能排入下列金属活动性顺序中：K、Ca、Na、Mg、Al、Mn、Zn、Fe、Sn、Pb、(H)、Cu、Hg、、Pt、Au ⑴用元素符号将上述金属活动性顺序补充完整。
⑵已知锰盐中锰元素显+2价。写出一个有金属锰参加的置换反应方程式：。
20.铝合金材料属于（）（填“纯净物”、“混合物”或“单质”）。铝是活泼金属，生活中的铝锅却有较强的抗腐蚀性，原因是()（用化学方程式表示）。如果将铝片投入稀硫酸中，片刻之后才有气泡产生，请用化学方程式表示这一过程：()。
21.要除去FeSO4中含有的CuSO4杂质。可以在其溶液中加入__________，充分反应后，再用____________方法除去杂质；该反应的化学方程式是：__________________________。22.以铁、水、稀盐酸、氧气、稀硫酸、硫酸铜溶液为原料，根据下列化学反应类型，写出相应的化学方程式：
（1）化合反应：______________________________；（2）分解反应：______________________________；
（3）置换反应：__________________，___________________，_____________________。23.已知A、B、C、D四种物质都含有同一种元素，其中A是单质，B是黑色固体，C是红色固体。它们之间存在着如下转化关系：（1）A在不同条件下能够转化成B或C；（2）A和稀硫酸反应有D生成；
（3）在高温条件下，B、C分别和无色气体E反应，都能生成A和另一种无色气体。根据上述
信息，写出下列物质的化学式：
A；C；D；E。
24.小亮在实验室用一块生铁与稀盐酸反应，观察到生铁表面出现，同时发现充分反应后的液体中有少量黑色不溶物。
提出问题：这种黑色不溶物是什么呢？ 猜想与假设：这种黑色不溶物中可能含碳。
设计方案：将黑色固体灼烧，若黑色固体中含有碳，就会有________气体生成，要想进一步确定这种气体，可以用_______________检验。
进行实验：小亮按设计方案进行实验，得到了预想的结果。
解释与结论：由此小亮得出结论：（1）生铁中___碳（含/不含）；
（2）碳与稀盐酸_____反应（能/不能），铁与稀盐酸___（能/不能）反应。25.如图测所示，弹簧秤下挂着一重物A，烧杯中盛有溶液B，试根据 要求回答下列问题：(1)若A为铁块，B为稀硫酸，则将A放入B中，过一会儿，弹簧秤的读数将(填 “变大”、“变小”或“不变”，下同)_____________；(2)若A为铁块，B为硫酸铜溶液，则将A放人B中，过一会儿，弹簧秤的读数将_________。
26.如图所示，大试管底部有螺旋状的光亮的铁丝，把试管倒插入水中，放置一周后，观察到铁丝表面有______生成，试管内的水面将_______，产生以上现象的原因是__________________________。27.(2008年烟台市)置换反应是化学反应的基本类型之一。
(1)金属与盐溶液之间的置换反应，一般是活动性较强的金属可把活动性较弱的金属从其盐溶液中置换出来，如铜和硝酸银溶液反应，其化学方程式为。(2)非金属单质也具有类似金属与盐溶液之间的置换反应规律，即活动性较强的非金属可把活动性较弱的非金属从其盐溶液中置换出来，如在溶液中可发生下列反应： C12+2NaBr=2NaCl+Br2 ；I2+Na2S=2NaI+S↓+Br2；Br2+2KI=2KBr+I2由此可判断： ①S、C12、I2、Br2活动性由强到弱顺序是。②下列化学方程式书写错误的是。(A)C12+2NaI=2NaCl+I
2(B)I2+2KBr=2KI+Br2
(C)Br2+Na2S=2NaBr+S↓
(D)C12+K2S==2KCl+S↓
28.(2008年眉山市)同学们一起探究铝、铁、铜三种金属的活动性，小刚同学设计了用铜丝、铁丝、铝丝和稀盐酸，只用一只试管，取一次盐酸的探究方案。请你和他们一起完善下表的探究方案并回答有关问题。(1)
结论：金属活动性Al ＞ Fe ＞ Cu
(2)将铝丝插入前应进行的操作是 ；(3)小华同学认为在小刚设计的方案中，只要补充一个实验，就可得出Al ＞ Fe ＞ H ＞Cu的结论。小华要补充的实验是；
(4)小强同学认为要得到Al ＞ Fe ＞ H ＞Cu的结论，不必做补充实验，中需将小明同学方案中插入金属的顺序调整即可，你认为调整后插入金属的顺序是。
29、为了比较Ag、Cu、Fe三种金属的活动性，小明选择了三种药品来进行试验(),小芳认为还可以选择另外的三种药品，你认为是（）。
30.生铁和钢都是铁的合金,生铁中碳的含量在2.0%～4.3%之间,钢中碳的含量在0.03%～2.0%之间。将一块质量为8.5 g的铁合金放入锥形瓶中,再向锥形瓶中加入91.9 g稀硫酸,恰好使铁合金中的铁完全反应(碳不溶于稀硫酸,铁合金中其它元素含量很低,可忽略不计),测得生成H2的质量为0.3 g。试根据计算回答:
(1)该铁合金是生铁还是钢?
(2)反应后所得溶液的溶质质量分数。
31.小娟想测定Cu—Zn合金和Cu—Ag合金中铜的质量分数，实验室只提供了一瓶末标明溶质质量分数的稀盐酸和必要的仪器。
（1）你认为她能测出铜的质量分数的合金是合金。
（2）小娟取该合金的粉末32.5 g，与足量该盐酸充分反应后，经测定产生了0.4 g气体，请你帮助她计算出该合金中铜的质量分数？
（3）若想测出该盐酸的溶质质量分数，你认为实验时必须提供和测出的数据是（选填序号）A.参加反应的合金质量B.参加反应的稀盐酸质量 C.生成的气体质量D.参加反应的稀盐酸的体积和密度
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