爱福生国际学校第11周作业礼包doc
2024仁爱新教材Unit2 Colorful School Life 知识清单(默写版)
【同步100分背默】Unit2 Colorful School Life 知识清单一．重点词汇背默Preparing for the Topic1./baɪ'ɑːlədʒi/；/baɪ'ɒlədʒi/ n.生物学2.* /ˌtʃaɪ'niːz/ n.汉语；中国人adj.中国的3.* /ɑːrt/；/ɑːt/ n.美术，艺术4./'hɪstri/ n.历史5.* /kəm'pjuːtə(r)/ n.电脑6.* /'saɪəns/ n.科学7./'wenzdeɪ/ n.星期三8./'ɪŋglɪʃ/ n.英语adj.英格兰的；英格兰人的；英语的9.* /ə'klɑːk/；/ə'klɒk/ adv.(表示整点)⋯⋯点钟10./'kwɔːrtər/；/'kwɔːtə(r)/ n.一刻钟11./pæst/；/pɑːst/ prep.在······之后12.* /hæf/；/hɑːf/ n.一半13.* /'əʊvə(r)/ adv.结束prep.遍及14.p.m. /ˌpi' em/=P. m. abbr.15.* /'feIvərIt/ ( favourite BrE) adj.特别受喜爱的n.特别喜爱的人(或事物)16.* /'sʌbdʒɪkt；'sʌbdʒekt/ n.科目17./'mʌndeɪ；'mʌndi/ n.星期一18.* /səʊ/ conj.所以19.* /baɪ/ prep.(表示方式)；在······旁边20./'sʌbweɪ/ n.地铁21.* /pleɪn/ n.飞机22.* /fʊt/ n.脚，足；底部23.* /kɑː(r)/ n.小汽车；轿车24.* /treɪn/ n.火车，列车25./ʃɪp/ n.(大)船26.* /bəʊt/ n.小船；舟27.* /fɑː(r)/ adv.远28.* /'nevə(r)/ adv.从不29.* /teɪk/ v.搭乘30./'seldəm/ adv.不常，很少31.* /nɪr/；/nɪə(r)/ prep.在······附近32.* /tə'deɪ/ adv.在今天33.* /gɪv/ v.给；提供34.* / pen/ n.笔；钢笔Exploring the Topic35./'bɪldɪŋ/ n.建筑物36.* /flɔː(r)/ n.楼层；地板37.* /lɑːt/；/lɒt/ pron.&det.大量，许多adv.非常38.* /'bjuːtɪfl/ adj.美丽的；美好的39.* /'pleɪɡraʊnd/ n.操场40./' nekst tu/ 紧邻41.* /'ɡɑːrdn/；/'ɡɑːdn/ n.花园42./'kʌlərfl/；/'kʌləfl/ ( colourful BrE)adj.五彩缤纷的，丰富多彩的43.* /'flaʊə(r)/ n.花，花朵44.* /kliːn/ adj.干净的v.打扫45.* /'taɪdi/ adj.整洁的46./waɪd/ adj.宽的；宽阔的47./klʌb/ n.俱乐部；社团48.* /'əʊpən/ adj.开放的v.开门，开业49./ˌɪnfər'meɪʃn/；/ˌɪnfə'meɪʃn/ n.信息50.* /'wɔːtə(r)/ n.水51./dʒɔɪn/ v.参加；加入52./fʌn/ adj.有趣的n.乐趣53./reɪz/ v.举起；提升54./flæg/ n.旗55./fɜːrst/；/fɜːst/ det.第一；首要的adv.首先；第一56.* /lɜːrn/；/lɜːn/ v.学习；学会57.* /bɔːl/ n.球58.* /meɪk/ v.做；使得59.* /sɔːŋ/；/sɒŋ/ n.歌曲60.* /hænd/ n.手61.* /bɑːks/；/bɒks/ n.盒；箱62./æk'tɪvəti/ n.活动63./naɪf/ n.刀64.* /tə'meɪtəʊ/；/tə'mɑːtəʊ/ n.西红柿65.* /glæs/；/glɑːs/ n.( pl.)眼镜66./ə'merɪkən/ n.美国人adj.美国的67.* /ðəʊz/ det.那，那些68./stɑːrt/；/stɑːt/ v.&n.开始69./'gæðə(r)/ v.聚集，集合70./'həʊmruːm；'həʊmrʊm/ n.进行课前点名的教室71.* /'klæsruːm/；/'klɑːsruːm/ n.教室72./'bɑːtl/；/'bɒtl/ n.瓶子73.* /' eni/ det.任何的，任一的pron.任一；任何数量74.* /dʒuːs/ n.果汁；菜汁75.* / desk/ n.书桌Developing the Topic76.* /' pensl/ n.铅笔77.* /'ruːlə(r)/ n.直尺78.* /'pɪŋ pɑːŋ/；/'pɪŋpɒŋ/ n.乒乓球运动79.* /faɪnd/ v.找到；发现80.* /skuːlbæg/ n.书包81.对不起；劳驾82./lɔ: st/；/lɒst/ adj.丢失的；迷路的83.* /'kʌlə(r)/ ( colour BrE) n.颜色84./ end/ v.&n.结束Wrapping up the Topic85./web/ n.网；网络86./peɪdʒ/ n.页；页面87.* /'welkəm/ v.欢迎88./mɔː(r)/ det.&pron.更多的89.* /wɑːnt/；/wɒnt/ v.想要；需要90./'tuːzdeɪ/；/'tjuːzdeɪ/ n.星期二91.* /griːn/ adj.绿色的n.绿色92.* /ruːm；rʊm/ n.房间；空间93./læb/ n.实验室94./'raɪtə(r)/ n.作家95.* /æsk/；/ɑːsk/ v.问；要求96.* /pleɪs/ n.地方；场所v.放置97./mə'ʃiːn/ n.机器，机械装置98./'sekənd/ det.& cordinal nu m.第二n.秒99./θɜːrd/；/θɜːd/ ordinal nu m.第三100./'fraɪdeɪ/ n.星期五101.* /'aʊə(r)/ n.小时二.重点短语背默1.坐汽车2.坐火车3.骑自行车4.乘船5.搭飞机6.坐公车7.步行8.乘船9.乘坐地铁10.什么时候11.是....时候了12.远离13.乘地铁14.地铁车站15.在某人的手中16.读书17.照像18.在桌子上19.不同于20.与某人聚集21.加入音乐俱乐部22.与…交友23.其他国家24.学校图书馆25.教学楼26.旁边的27.经历28.放学后29.玩水上游戏30.课外活动31.玩得开心32.发现三．重点句子背默1.--is it now?--It's eight o'clock.现在几点了？现在是八点钟了。
九下英语名校课堂11单元作文答案
The Power of Perseverance: A Journey to Academic Success In the journey of academic pursuits, perseverance stands as a guiding star, illuminating the path to success. As students progress through their academic careers, they encounter various challenges and obstacles that require determination and persistence to overcome. The eleventhunit of the renowned "English for Schools" textbook series, "Naming School," presents a profound lesson on the importance of perseverance in academic achievement. Drawing inspiration from this unit, this essay explores the essence of perseverance and how it shapes our academic journey.Perseverance is the steadfastness in doing something despite difficulty or delay in achieving success. It is a quality that is honed through challenges and setbacks, as one learns to persevere in the face of adversity. In the academic world, perseverance is the driving force that propels students to persevere despite the challenges they encounter. It is the belief that with enough effort and dedication, success is attainable.The journey of academic success is not without its pitfalls. There are days when the tasks seem overwhelming,and the challenges seem insurmountable. However, it is during these moments that perseverance shines brightest. It is the invisible force that pushes students to rise above their limitations and persevere until they reach their goals.One of the most striking examples of perseverance in the academic world is the story of Thomas Edison. He is renowned for his invention of the light bulb, but his journey to this groundbreaking achievement was fraught with failures. Edison faced numerous setbacks and challenges in his quest to create a lasting, efficient light source. However, he never gave up. Instead, he persevered, learning from his failures, and ultimately achieved success. His story teaches us that perseverance is not about never failing, but about never giving up in the face of failure. In the context of the eleventh unit of "Naming School," the lesson is clear: perseverance is the key to academic success. Students are encouraged to embrace the challenges they face, to learn from their mistakes, and to persevere until they master the concepts and skills required for academic excellence. This unit emphasizes the importance ofnot only understanding the material but also applying it in real-world situations. It is this application of knowledge that truly demonstrates academic achievement.Moreover, perseverance cultivates a growth mindset, where students view challenges as opportunities for growth and learning. Instead of shying away from difficult tasks, they embrace them, learning from the process and becoming stronger academically. This mindset is crucial for success in both school and life, as it equips students with the tools and resilience to overcome any obstacle they may encounter.In conclusion, perseverance is the engine of academic success. It is the driving force that propels students forward, despite the challenges and setbacks they may face. By embracing perseverance, students learn to persevere in the face of difficulty, to learn from their mistakes, and to ultimately achieve their academic goals. The eleventh unit of "Naming School" serves as a powerful reminder of this truth, urging students to persevere in their academic pursuits and embrace the power of perseverance.。
课时作业11：Unit 3 Life in the future
Unit 3Life in the futureⅠ.阅读理解AWhat will the city of the future be like? No one knows for sure，and making predictions is a risky business. But one thing is certain about the future city—they are going to get bigger before they get smaller. Here are some of the ideas for running a city of 50,000 people in the year 2025.1. To get rid of garbage problems, the city will load huge spaceships with waste materials and send them towards the sun，preventing landfill and environmental problems.2. No smoking will be allowed within a future city's limits.3. In the future all shopping will be done online, and catalogues will have voice commands to place orders.4. Everyone will be given a telephone number at birth that will never change no matter where they live.5. All forms of recreation, such as cinemas, bowling, concerts and others, will be provided free of charge by the city.6. All cars will be powered by electricity, solar energy or wind, and it will be possible to change the color of cars at the flick of a switch.7. Distance surgery will become common as doctors carry out operations from thousands of miles away, with each city having its own tele-surgery outpatient clinic.8. Old people and people with disabilities will be able to go anywhere in the world using high-tech cameras attached to their heads.9. Traveling in space by ordinary citizens will be common. Each city will have its own spaceport.1．From the passage, we can infer that now_______.A．some waste materials are got rid of by filling holes in the ground with themB．a patient can have an operation but doesn't have to stay in hospitalC．you must go out of the city if you want to smokeD．no cars are powered by solar energy or wind2．The underlined word “recreation” in the fifth idea probably means“_____”．A．risky businessB．what people will create againC．taking one's career once againD．activities for pleasure and amusement3．Which is the best title for the eighth idea?A．Senior citizens B．Holidays at homeC．The disabled D．Space travelBHave you ever been to the world's smallest bookstore?The World's Smallest Bookstore，whose official name is just these three words，sits quietly about 100 miles northeast of Toronto.The bookstore is about 10 feet by 10 feet，so it is easy to imagine how tiny it really is.The bookstore is open 24 hours a day.Inside the bookstore are various books，especially literary books and classic authors' works.So if you are looking for something less popular，you may get a bit disappointed there.Another special feature of this bookstore is that each book only costs three dollars.All the expenses are paid on the honor system，which means buyers should make a note of what they've bought and leave their money by themselves.So the tools of the trade in this bookstore are quite simple: pens，papers，light bulbs and a label－maker.In order to catch passers-by's attention，the billboards(广告牌)of the bookstore are several times bigger than the store itself.With these large eye－catchers，many people are willing to stop by and have a visit.4．What's the passage mainly about?A．The world's smallest bookstore.B．A strange way of selling books.C．The popular books nowadays.D．The popular bookstores in the world.5．When can you buy a book in the store?A．In the morning.B．In the afternoon.C．At night.D．At any time of the day.6．Which of the following books might you most probably get in the store?A．Books on popular science.B．Literary books.C．The year book of a university.D．Books on economic control.7．How does the store attract readers' attention?A．By putting up a huge billboard.B．By making ads on TV.C．By broadcasting loud music.D．By handing out ads in the street.Ⅱ.七选五根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。
冀教版九年级英语Unit2 Lesson11 To China, with Love课件
outside hospitals. In 1938, he came to China to treat the Chinese soldiers in the mountains north of Yan'an.There were 10 doctors,so he had to work very hard. He opened hospitals to give treatments to local people and soldiers and train doctors and nurses. He also wrote books so that doctors could learn about new treatments. Dr. Bethune worked very hard without stopping to 11 . Once,he performed operations 12 69 hours without stopping,and saved 112 people. He 13 working in spite of cut-
go on making his own toy.
4.(人与社会·体育活动)Not only Peter but also his father is/was (be) crazy about the basketball match. 5.(新独家原创)Tom wanted to join an after-school club to meet (meet) some new friends. 6.(2023甘肃兰州中考)—Excuse me, could you please tell me where I can get some food quickly (quick)? —Sure, there is a restaurant on Center Street.
平顶山“PEP”2024年小学五年级下册第11次英语第2单元暑期作业
平顶山“PEP”2024年小学五年级下册英语第2单元暑期作业考试时间：80分钟（总分:100）A卷考试人：_________题号一二三总分得分一、选择题(共计20题，共40分)1、What do we call the process of a plant growing through a seed?我们称植物通过种子生长的过程为？A, GerminationB, PollinationC, FertilizationD, Photosynthesis2、What does "植物科技合作项目" mean in English?A, Plant technology cooperation projectB, Agricultural projectC, Environmental projectD, Ecological project3、What is the color of the sky on a clear day?A, GreenB, BlueC, YellowD, Purple4、Which day comes after Monday?A, SundayB, TuesdayC, WednesdayD, Thursday5、What is the hardest natural substance on Earth?A, GoldB, DiamondC, IronD, Silver6、What does "商店" translate to in English?A, StoreB, MarketC, MallD, Shop7、Which country is famous for kangaroos?A,USAB,CanadaC,AustraliaD,India8、Which shape has three sides?A, SquareB, CircleC, TriangleD, Rectangle9、What do you call the time when you wake up in the morning? A, SunriseB, DawnC, MorningD, Night10、What do we call a plant that grows on another plant?中文解释：我们称生长在另一植物上的植物为？A, Parasitic plantB, Epiphytic plantC, Climbing plant11、He is my best friend. 他是我最好的朋友。
fuxi1 演示文稿共18页文档
▪ 8、一天，小鹰、小鸭和小鹿在小河边发现了一箱水果， 它们决定把这箱水果拖到动物俱乐部去。于是，各自找 来一根绳子，一头系在水果箱上，一头系在自己身上。 小鹰想从天上飞过去，就用力往天上拉；小鸭子想从水 里游到目的地，就往水里拉；小鹿则想走大路，就往大 路上拉。结果是水果箱一动也不动。请你想一想：
▪ A、只要各司其职，做好自己的事 B、要团结协 作，相互配合
▪ C、只要努力学习，不要做其它事 D、要明荣知 耻，是非分明
▪ 5、在2012年6月《大河报》举行的高考状元学 习座谈会上，几位高考状元强调，一个人成功与 否，主要在于有没有学会学习和学会做人。学会 学习就是要求我们做学习的管理者。对于初中生 来说，做学习的管理者，应注意 （ ） ①学会自 主学习 ②提高学习效率 ③科学安排时间 ④经常 加班加点 ⑤减轻课业负担
多；制定的目标不切实际，不能实现就心烦意乱；从来 不制定学习计划，做事太随意，顾首不顾尾；不习惯花 点时间去衡量哪些任务需要优先处理 . ▪ （2）面对忧心忡忡的小华，你准备怎样来劝导他？ ▪ 寻找自己落后的原因，找出解决问题的方法；在学习的 时候，多注重效率的提高，科学地安排时间；制定适合 自己的学习计划，这样，成绩就一定会提高。
▪ A、学习习惯 B、学习方法 C、时间观念 D、学习态度
▪ 7、小华在小学时，是个学习成绩很好的学生，可是进 入初中后，随着科目增多，小华感到时间不够用，成绩 有很大的滑坡，他父母很着急，小华也是忧心忡忡。
▪ （1）你认为造成小华忧心忡忡的原因可能有哪些？ ▪ 做事太拖拉，常常拖到最后一分钟才动手，事情越积越
▪ A、①②③ B、①②④ C、①③④ D、② ③④
▪ 3、彩虹的美丽在于他的七色光彩，班级的美丽 在于 （ ）
家庄市创新国际学校初中英语七年级下册Unit 11习题(提高培优)
一、选择题1．She was not at home， I left a message for her．A．or B．so C．if D．because B解析：B【解析】句意：她不在家，所以我给她留了个口信。
A. or或者，否则； B. so因此； C. if 如果；D. because因为。
结合语境理解，前后句是因果关系，前因后果，故答案为B。
2．Mary likes drawing very much. Her _______ are very good.A．books B．songs C．photos D．paintings D解析：D【解析】句意：玛丽非常喜欢画画，她的画很好。
A. books书；B. songs歌曲；C. photos照片；D. paintings绘画。
根据前面“玛丽非常喜欢画画”，可知此处为“她的画很好”，结合选项，可知D选项符合题意，故答案选D。
3．--______you at school last Sunday?--No, I ____.A．Did; didn't B．Was; wasn’t C．Did; wasn’t D．Were; wasn't D解析：D【解析】句意“-你上个星期天在学校吧？-没有，我没在”。
根据主语you可知，排除B，且根据句意可知，问的是状态，用be动词。
第一空主语为you，用were，第二空主语为I，用wasn’t。
故选D。
4．Ten years ago Helen ____ in New York and now she ____in Beijing.A．lived; lived B．lived; lives C．lives; lived D．lives; lives B解析：B【解析】句意：十年前，海伦住在纽约，现在她住在北京。
Ten years ago提示第一个空要用动词的过去式，live的过去式为lived，根据句意后面表示的是现在的时态，故要用一般现在时，she作主语，live要变成单三形式，即lives,故选B。
人教版九年级英语全册(遵义专版)同步作业课件：Unit 11 双休作业(共28张PPT).ppt
• 9、春去春又回，新桃换旧符。在那桃花盛开的地方，在这醉人芬芳的季节，愿你生活像春天一样阳光，心情像桃花一样美丽，日子像桃子一样甜蜜。 2021/1/122021/1/12Tuesday, January 12, 2021
• 10、人的志向通常和他们的能力成正比例。2021/1/122021/1/122021/1/121/12/2021 10:13:27 PM • 11、夫学须志也，才须学也，非学无以广才，非志无以成学。2021/1/122021/1/122021/1/12Jan-2112-Jan-21 • 12、越是无能的人，越喜欢挑剔别人的错儿。2021/1/122021/1/122021/1/12Tuesday, January 12, 2021 • 13、志不立，天下无可成之事。2021/1/122021/1/122021/1/122021/1/121/12/2021
。2021年1月12日星期二2021/1/122021/1/122021/1/12
• 15、会当凌绝顶，一览众山小。2021年1月2021/1/122021/1/122021/1/121/12/2021
Байду номын сангаас
• 16、如果一个人不知道他要驶向哪头，那么任何风都不是顺风。2021/1/122021/1/12January 12, 2021
•
THE END 17、一个人如果不到最高峰，他就没有片刻的安宁，他也就不会感到生命的恬静和光荣。2021/1/122021/1/122021/1/122021/1/12
谢谢观看
• 14、Thank you very much for taking me with you on that splendid outing to London. It was the first time that I had seen the Tower or any of the other famous sights. If I'd gone alone, I couldn't have seen nearly as much, because I wouldn't have known my way about.
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班级：姓名：
爱福生国际学校初三化学周末礼包(11)
一、选择题（共20小题）（学习包分层A.1-21 B.1-18 C:1-15）
1.下列物质是纯净物的是（）
A.冰水混合物
B.食盐水
C.海水
D.汽水
2.品红在水中扩散，说明了（）
A、分子很小
B、分子间有间隔
C、分子在不停运动
D、物质是由分子构成的
3.下列用水方法中，会造成浪费的是（）
A、用口杯接水刷牙
B、为了节约时间，一两件衣服就用洗衣机洗
C、工业用水重复利用或循环利用
D、改漫灌为喷灌、淋灌或滴灌
4.不能说明分子之间有间隔的事实是（）
A、冰受热融化成水
B、面粉中掺入砂糖
C、各为10ml的酒精和水混合后，体积小于20ml
D、打满气的气球可以被压缩
5.关于水的组成叙述正确的是（）
A、水是由氢分子和氧分子构成的
B、水是由氢气和氧气组成的
C、水分子是由一个氢分子和一个氧原子构成的
D、水是由氢元素和氧元素组成的
6、下列物质中属于单质的是（）
A.水B、空气C、氧气D、二氧化碳
7、保持氧气化学性质的最小粒子是（）
A、氧分子
B、氧原子
C、氧离子
D、氧气
8、Q在下列变化中，能证明分子可分的事实是（）
A、水蒸发变成水蒸气
B、海水通过蒸馏得到淡化
C、水在直流电下变成氢气和氧气
D、过滤可以除去海水中难溶性杂质
9、下列物质中含有氧气分子的是（）
A、过氧化氢（H2O2）
B、二氧化锰（MnO2）
C、二氧化碳（CO2）
D、空气
10、由电解水的有关实验可得到的结论是（）
①水由氢氧两种元素组成②水中有氢气和氧气③电解1体积的水可以得到2体积的氢气和1体积的氧气④化学反应里分子可以再分为原子，而原子再分
A、①②
B、③④
C、②③
D、①④
11、分子和原子的本质区别是（）
A、分子大，原子小
B、分子是构成物质的粒子，而原子
不是
C、分子能保持物质的化学性质，而原子不能
D、在化学反应里，
分子可分，而原子却不能再分
12、下列常见的物质中，属于纯净物的是（）A、洁净的空气B、生理盐水C、冰水混合物D、青岛牌啤酒
13、世界上没有两片雪花的形状完全相同。
下列说法正确的是（）
A、在雪花的形成过程中，水分子由运动变为静止
B、雪花融化时，水分子之间的间隔没有发生变化
C、不同雪花中，水分子化学性质不用 D.不同雪花中，水分子数目都是巨大的
14、下图是水分解的微观过程，下列叙述正确的一组是（）
①化学变化中，分子可分，而原子不能再分；化学变化的实质是分子分裂成原子，原子重新组合成新分子②分子是构成物质的一种基本微粒；分子是由原子构成的③水通电分解是化学变化；水分子是保持水化学性质的微粒④化学反应前后原子的种类和个数不变，元素的种类也不变
A、①②③④
B、①②④
C、①②
D、③④
15、下列分离和提纯物质的方法中，错误的是（）
A、把不溶性固体与液体分离可用过滤法
B、把溶解在液体中的固体分离出来可用蒸发的方法
C、水或空气中一些有颜色或气味的杂质用活性炭吸附
D、如果要从海水中提取淡水，可以用蒸发法
16、Q根据物质的物理性质确定用途的是（）
A、氮气可以做灯泡保护气
B、用铝做导热材料
C、汽油作燃料
D、镁做照明灯燃料
17、Q胆矾是一种蓝色晶体，胆矾受热时易失去结晶水变为白色的硫酸铜，在工业上精炼铜、镀铜等都需用到胆矾。
上述叙述中没有涉及的是（）
A.物理性质B、制法C、用途D、化学性质
18、下列属于物质化学性质的是（）
A、在天然物质中，金刚石硬度最大
B、40。
C时，水的密度最大
C、酒精能够燃烧
D、氧气是一种无色无味的气体
19、下列反应属于化合反应的是（）
A、水氢气+氧气
B、石蜡+氧气——水+二氧化碳
C
、蔗糖+水——糖水D、硫+氧气二氧化硫
20、蒸馏水中不能养鱼是因为不含有（）
A、氧元素
B、氧原子
C、氧分子
D、氢原子
21、下列物质中属于纯净物的是（）
A、果汁
B、豆浆
C、碳酸饮料
D、水
二、填空题（学习包要求：A:全做 B:21—28 C:21—25）
22..在①冰水混合物、②医用酒精（75%）、③碘酒、④淄河水、⑤氯化钠、⑥高锰酸钾、⑦铝、⑧
铝合金、⑨干冰中属于纯净物的是：属于混合物的是：
23.下列描述：①酒精挥发、②酒精容易挥发、③钢铁生锈、④钢铁容易生锈、⑤干冰升华、⑥氢气
第1页（共2页）
燃烧、⑦氢气具有可燃性、⑧氧气能够支持燃烧、⑨二氧化碳能够使澄清石灰水变浑浊。
属于化学变化的是：属于物理变化的是：属于物理性质的是：属于化学性质的是
24.物理变化：化学变化：
25.物理性质：化学性质：
注意：物质的变化描述的是一个过程，而物质的性质是描述的属性有关联词如：钢铁生锈是一个化学变化而钢铁容易生锈是化学性质（容易，能够，会，具有等等关联词）
25硬水：软水：
如何区别硬水和软水：除去水中的色素和异味用
天然水经过、、成为自来水，写出两条节水措施：、 ,天然水净化过程加热明矾的作用：
加入活性炭的作用通入氯气（或加入二氧化氯）的作用
27.纯净物：混合物：
28.如图是小红同学用来电解水的简易装置图．请你参与探究并回答下列问题：
（1）电源的A为______．C试管收集的气体是可以用检验，D试管内是
具有性C、D试管中气体的体积比，该反应的
文字表达式，实际上C与D的体积比略
小于1:2原因
（2）你认为水发生的上述变化是______变化．
（3）小红在做电解水实验之前还对天然水中的杂质进行了探究，他发现
天然水中有可溶性和不溶性两种杂质．你认为除去不溶性杂质的方法
是．
29.小明同学去九仙山旅游时，用瓶装了一些山下的泉水，带回实验室，
在老师的指导下，按下列流程进行实验，制取蒸馏水。
请回答下列问题：
（1）取水后加入明矾的作用是__________________________________________ 。
（2）进行过滤操作时，下列做法错误的是。
A．玻璃棒要靠在三层滤纸的一边 B．漏斗下端的管口要紧靠烧杯的内壁
C．滤纸的边缘要低于漏斗口 D．液面不要低于滤纸边缘
（3）向滤液中加入活性炭，利用其性，除去水样中的色素和异味。
（4）在制取蒸馏水的过程中，在水中要放碎瓷片，其作用
是
30.玻璃仪器洗涤干净的标准：
31.过滤操作需要的玻璃仪器有：32.量取液体的正确读数方法：
第2页（共2页）。