2019-2020年人教统编全品中考复习方案英语—新课标河北版化学—河北专版·主题三幻灯片

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(河北专版)2020中考英语复习方案第一篇教材考点梳理课时训练17Units5_6(九全)试题人教新目标版

(河北专版)2020中考英语复习方案第一篇教材考点梳理课时训练17Units5_6(九全)试题人教新目标版

课时训练(十七)Units 5-6(九全)(限时:30分钟)Ⅰ.单项选择1.[2019· 盐城]The number of the people using Huawei is getting larger and larger.A.culturesB.customersC.productsD.histories2.[2019·铁岭]—I found in the room. Where have they gone?—They've gone to Dave's birthday party.A.nobodyB.somebodyC.anybodyD.everybody3.[2019· 乐山改编]—Look, Linda. The flowers in our classroom came out in one night.—I can't believe it. They are beautiful and colorful. They great.A.soundB.smellC.tasteD.feel4.[2019·滨州改编]—Confucius Institute(孔子学院) has been set up in many other countries. —Yes, Chinese is spoken in those countries. I am proud of that as a Chinese.A.hardlyB.widelyC.neverD.seldom5.—Your father has passed the driving test?—Yes. my father my mother has.A.Not only; but alsoB.Neither; norC.Either; orD.Both; and6.[2019·天津] The Hong Kong-Zhuhai-Macao Bridge in 2018.We are proud of it.A.is completedB.is completingC.was completedpletes7.—Excuse me, sir. Are you sure the umbrella in your hand belongs to you?—Oh, sorry. I took it . Mine is over there under the chair.A.at onceB.on timeC.by mistakeD.in all8.—Why do you Yao Ming?—Because he is a great player.A.look likeB.look downC.look overD.look up to9.I met Lucy on the way home yesterday, and we had a happy chat.A.by mistakeB.by accidentC.by turnsD.by land10.[2019·达州]—Where will the 2022 Winter Olympics , Cindy?—In Beijing, the capital of China, the first city to host both Summer and Winter Olympics. A.be taken place B.take placeC.take partD.be taken partⅡ.[2019·烟台]完形填空It's March 12th. Li Li and Lin Tao are digging on a hill not far from their school. In China, people across the country plant trees 11 on this day.The idea of planting trees was first put forward in 1911 by Sun Zhongshan, the great 12 in China's history. He said more trees were needed as a 13 against flood(洪水) and drought. In 1915, April 5th was named as Tree Planting Day. Then, in 1979, the day was 14 to March 12th, to 15 the date on which Sun Zhongshan died.“Everyone has heard of the Great Wall of China,” says Li Li. “But have you heard of the Green Wall of China? That's the biggest tree planting 16 of all.” The Gobi Desert in the north of China was 17 every year. So in 1978, a tree planting project was started to 18 the Gobi spreading. The government and local farmers have been planting millions of trees to build a great green “wall” along the edge of the desert.“Tree planting has become a tradition in China now,” says Lin Tao. “Almost everyone does it on March 12th. Many people also plant a tree on a 19 day. My parents planted a tree when I started school. And my cousin planted 20 on his wedding(婚礼) day. We do it for the environment and for ourselves.”()11.A.silently B.wisely pletely D.actively()12.A.artist B.engineer C.pioneer D.musician()13.A.protection B.position C.preparation D.direction()14.A.taken B.decided C.changed D.given()15.A.value B.remember C.express D.admire()16.A.research B.survey C.project D.success()17.A.growing B.appearing C.losing D.happening()18.A.keep B.have C.help D.stop()19.A.different B.special C.basic D.simple()20.A.one B.that C.it D.thisⅢ.阅读理解The well-known “new great inventions” of modern China have made our daily lives mor e convenient.High-speed trainsChina created its first high-speed railway line in 2008. Since then, the number of passenger trips has grown by over 30 percent every year. By 2016, more than 5 billion trips had been taken on the trains. By 2020, one-fifth of the country's 150,000-km railway network will be used by the trains. This network will link more than 80 percent of major cities across China.Mobile paymentMobile payment is turning China into a “cashless society”. Instead of paying by cash(现金), customers now pay for their goods and some kinds of bills simply by typing a short password into the Alipay or WeChat app on their mobile phones.Shared bikesChina has surprised the world with how quickly shared bikes are widely used. Nowadays, bike users can simply pick up or park the bike on the street through GPS and smartphone apps. China's bike-sharing companies have been opening their overseas markets in Singapore, the UK and the United States.Online shoppingWith around 751 million Internet users, China has been the world's largest and fastest-growing online shopping market. Because of lower costs and fewer licensing requirements(执照要求), it's easier for sellers to open an online shop in China. In 2016, more than 20 million jobs of rural areas were created.21.What's the passage mainly about? ()A.The fast-developing technology.B.Modern China.C.China's new great inventions.D.Convenient daily lives in China.22.By 2020, more than of major cities across China will be linked by high-speed trains network.()A.30%B.one-fifthC.80%D.20%23.Mobile payment makes shopping more convenient in China because customers .()A.can go shopping without mobile phonesB.needn't take cashC.don't have to use a passwordD.needn't pay for the bills24.Shared bikes can be picked up or parked . ()A.on the streetB.in supermarketsC.in parksD.in markets25. can make online shopping develop so fast in China. ()A.Lower costsB.Fewer licensing requirementsC.More job chancesD.A, B & CⅣ.[2020·原创]任务型阅读阅读短文,并按要求完成26~30题。

(河北专版)2020中考英语复习方案第一篇教材考点梳理课时训练18Units7_8(九全)试题人教新目标版

(河北专版)2020中考英语复习方案第一篇教材考点梳理课时训练18Units7_8(九全)试题人教新目标版

课时训练(十八)Units 7-8(九全)(限时:30分钟)Ⅰ.单项选择1.[2020·原创]—Whose guitar is this?—Tom likes playing it. So I guess it must belong to .A.hisB.heC.himD.I2.The New Silk Road will offer a good to nations to communicate.A.chanceB.habitC.questionD.price3.Sleeping is a good thing, but some people sleep .A.easilyB.badlyC.quicklyD.well4.—Did you talk back to your mother when you were a child?—Yes. But now I realize I was wrong. I really regret that silly thing to my mom.A.doB.to doC.doingD.did5.—Anne, the information you gave is really . Thank you very much.—Not at all. I am happy I can help you.elessB.ordinaryC.valuableD.impossible6.[2019·凉山]I don't want to be else. I just want to be .A.anybody; myselfB.somebody; myselfC.everybody; meD.anybody; me7.Children under 12 years old ride sharing bikes. It's too dangerous.A.shouldn't allow toB.shouldn't allowC.shouldn't be allowed toD.shouldn't be allowed8.[2019·湘西改编]—Is that boy Scott?—No, it be Scott. Scott is much taller.A.canB.can'tC.mustn'tD.must9.[2020·原创]—What? We can take buses with just a mobile phone?—Yes. Buses in Nanjing began to the Alipay app.A.shareB.saveC.searchD.support10.Sometimes our hobbies can our study.A.get in the way ofB.get intoC.get out ofD.get onⅡ.[2019·凉山州]完形填空Can you imagine that we could build a beautiful city with rubbish? Maybe you will think it is 11 . However, it can be true! Nothing is a waste if we have a creative mind. Let me show you something about 12 rubbish.Sometimes we can see tons of rubbish in the streets, on the roads, near the bu ildings… here and there. Many large cities became so ugly 13 it. Nobody likes rubbish, but in fact, some rubbish can be used again. All of us want to solve the problem, so we must do something to 14 rubbish. We should take action from now on. 15 , some good things will not be wasted.Do you often throw away things you don't need any more? Have you ever thought about how these things can actually be put to good use? For example, when a car gets too old, it may not run any more. But we can use the metal of the car to make something else. When a bottle is empty, it 16 as waste. You don't know bottle glass can be made into sand and used to build streets. Rubbish 17 food can be changed into fertilizer to make plants grow better. It is cheap and safe. And other rubbish can also be used to make building blocks. Now, 18 machines are designed for that.19 , people will watch films in a beautiful cinema which is built out of rubbish. Besides buildings and roads, cities may be made from rubbish. But so far, building beautiful cities made from rubbish is only 20 .()11.A.important B.understanding C.unbelievable D.possible()12.A.returning B.reusing C.reflecting D.repeating ()13.A.because B.because of C.instead of D.as for()14.A.make a living as B.make promises toC.make up our mind toD.make use of()15.A.On the way B.By the wayC.In this wayD.Out of the way()16.A.will be thrown away B.will throw awayC.threw awayD.was thrown away()17.A.from B.in C.on D.to()18.A.fewer and fewer B.less and lessC.more and moreD.more and less()19.A.Some day B.The other dayC.NowadaysD.In the day()20.A.a symbol B.a letterC.a lessonD.a dreamⅢ.[2019·河南]阅读理解Thousands of years ago, Britain was covered by thick forests, home to many animals which no longer live in the United Kingdom. There were wolves and bears, many different kinds of deer and large wild cows. There were less than four million people. They lived in small villages protected by wooden walls from the animals outside.All this has changed, of course. Now the population of the United Kingdom has increased to sixty-five million. Three-quarters of Britain is covered with fields, towns or cities. Although 25 percent of land is countryside, new methods of farming mean that there are fewer birds and small animals living in fields than ever before. The United Kingdom is one of the few countries in the world that does not have a large wild animal that eats meat. In Scotland there are only 400 wildcats, but these are much smaller than wolves.Some people would like to change things, however! Some organizations(组织) and writers say that Britain needs to become more natural again. They suggest that trees and plants that grew in the UK before towns and cities were built should be allowed to grow again. They even say that large wild animals which have not lived in the UK should be helped to return and live wild. They call this “rewilding”.Not everyone agrees. In the last twenty years, over one million trees which at first grew in Scotland have been planted and there are plans for more—but wild animals? Some people ask if wolves will attack(攻击) sheep or even humans. They are also angry that rewilding might mean an end to walking in the hills which so many people enjoy. So far there are no wolves or bears in Britain's forests—but soon there might be!21.What was the population of the UK thousands of years ago? ()A.About 25 million.B.Over 65 million.C.More than 61 million.D.Not more than four million.22.Why are there fewer birds and small animals in fields in the UK? ()A.Because more trees have been planted.B.Because there are more large wild animals.C.Because pollution is much worse than before.D.Because people use new methods of farming.23.Which paragraph gives opinions from “rewilding” supporters?()A.Paragraph 1.B.Paragraph 2.C.Paragraph 3.D.Paragraph 4.24.What are some people against? ()A.Living closer to nature.B.Planting more and more trees.C.Helping large wild animals return.D.Building more villages and towns.25.What's the best title for the text? ()A.Making Britain wild againB.A trip to wild BritainC.An introduction to BritainD.Protecting the environmentⅣ.[2019·泰州改编]任务型阅读阅读短文,并按要求完成26~30题。

河北专版2019中考英语高分复习第一篇教材梳理篇第06课时Units1_3八上课件人教新目标版201902202118

河北专版2019中考英语高分复习第一篇教材梳理篇第06课时Units1_3八上课件人教新目标版201902202118

(2)Remember them as carefully as you can and
A.to not make
C.not to make
D.not make
核心考点突破
❺ although 【题8】 A
conj.虽然;尽管;即使
riding shared bikes(共
【归纳拓展】 although (=though)引导让步状语从句时,从句放在 主句前后均可。若句中用了although 或though,就不 能再用but, 但可用yet或still。 Although/Though it was snowing, (yet) it was not very cold.
核心考点突破
❹ try
v.& n.尝试;设法;努力
B her at
【题7】 (1)Dear, let’s try number. A.to call try C B.calling any mistakes. B.not making
【归纳拓展】
another number. Maybe we phoned the wrong C.call D.called
对时间段或 (for)three days/weeks/months, since two hours ago 等
长度提问
对将来的时 间提问
时间段; two meters long等
adj.& adv.足够的(地); 充足的(地);
【归纳拓展】
【题4】 用括号中所给单词的适当形式填空 The young man is old enough to drive (drive) a car by himself.
核心考点突破

(河北专版)2020中考英语复习方案第一篇教材考点梳理课时训练07Units4_6(八上)试题人教新目标版

(河北专版)2020中考英语复习方案第一篇教材考点梳理课时训练07Units4_6(八上)试题人教新目标版

课时训练(七)Units 4-6(八上)(限时:30分钟)Ⅰ.单项选择1.[2019·咸宁]—Nowadays more and more foreigners are becoming interested in kung fu.—That's true. It's an important part of Chinese .A.inventionB.storyC.cultureD.custom2.[2019· 盐城]You need not only talent but also hard work to become a football player.A.youngB.successfulC.happyD.friendly3.[2019·扬州]—Tan Dun does not use any musical instruments in his music Water.—That's really amazing! He is so .A.energeticB.modestC.seriousD.creative4.As we all know, Heze is its peony(牡丹). It attracts millions of visitors from home and abroad every year.A.popular withB.well-known asC.famous forD.famous to5.[2020·原创]The final exam is very important, so we must take it .fortablyB.seriouslyC.beautifullyD.luckily6.[2019·南通]Some jazz musicians are great because they can music while playing.A.put upB.set upC.take upD.make up7.[2019·黄石]—Do you know Hong Kong-Zhuhai-Macao Bridge(港珠澳大桥)?—Yes, it is cross-sea bridge in the world.A.the longerB.longestC.the longestD.longer8.My grandmother is going to a hobby like shopping on the Internet.A.take upB.look upC.get upD.wake up9.—What is your plan for next weekend, Lingling?—I volunteer work in the museum.A.was doingB.didC.have doneD.am going to dorry hopes his English, so he keeps practicing it every day.A.to solveB.solvingC.to improveD.improvingⅡ.[2019·黄石]完形填空A man sees a butterfly(蝴蝶). The butterfly tries to get out of its chrysalis(蛹). So the man decides to help. He cuts the chrysalis and the butterfly comes out 11 . To his surprise, the butterfly is unable to fly. If the butterfly doesn't struggle(挣扎;奋斗) to get out of the chrysalis, it can't 12 ! The struggle develops the energy in the butterfly which makes it fly. Similarly, the challenges(挑战) of life bring out the best in young people and prepare the 13 to fly.When people are young, meeting and overcoming challenges will make them strong and ready to 14 life. If we look at successful people, we will find that the more challenges they have had, the more 15 they are. One famous man, who now owns many big factories, used to sell socks from door to door when he was young. 16 successful man is Eric. He set up a college 17 the age of 30. His father died when he was only 16. As the oldest child in the family, he worked in the day and studied in the night. His father's death forced him to 18 fast.He took up the challenges and overcame them. Today, not only he himself, 19 also his brothers and sisters are leading successful lives.Some parents and teachers actively 20 young people to face challenges. It is important for them to learn to meet challenges and overcome them.()11.A.easily B.silently C.bravely D.suddenly()12.A.stand B.run C.fly D.jump()13.A.method B.ability C.situation D.luck()14.A.sense B.like C.believe D.face()15.A.successful B.excited C.dangerous D.careful()16.A.Other B.Another C.Others D.The other()17.A.on B.by C.at D.in()18.A.get up B.set up C.give up D.grow up()19.A.but B.or C.so D.and()20.A.experience B.provide C.encourage D.promiseⅢ.[2019·广安]阅读理解Every year thousands of young people in England finish school and then take a year off before they start work or go to university. Some young people go to other countries and work as volunteers.Volunteers give their time to help people. For example, they work in schools or hospitals, or they do something helpful for the environment.Paul, 18, comes from Wales. Next year he wants to go to university to study Chinese, but now he's living in Belize. Paul says, “I'm working with other people here to save the coral reefs (珊瑚礁) in the sea near Belize. The reefs here are beautiful, but if the sea water is polluted badly, the coral will die. I'm helping to do study on the coral and the fish that live around the reefs. All over the world, coral reefs are dying. We need to do something about the problem before it's too late. I'm staying with a family here. I help do some housework. I don't get any money, but that's OK. I love my work here, and I'm learning a lot about the people of Belize! When I finish my work, I want to stay here for another three months. I want to travel around Belize and Central America.”21.What will some young people in England do after finishing school? ()A.Go to work for money.B.Go to other countries and work as volunteers.C.Start work in universities.D.Go to university in other countries.22.Where is Paul living now? ()A.England.B.China.C.Belize.D.America.23.What is Paul doing with other people in the sea near Belize? ()A.Working to save the coral reefs.B.Studying Chinese in the university.C.Helping do some housework.D.Doing some study in Wales.24.From the passage, we know that the coral reefs . ()A.are not as beautiful as beforeB.will probably be sold for moneyC.may die because of the pollutionD.cannot live without fish in the sea25.What does Paul want to do after he finishes his work as a volunteer? ()A.Stay there for another year.B.Go back home to start work.C.Learn about the people at home.D.Travel around Central America.Ⅳ.[2019·保定二模]任务型阅读阅读短文,并按要求完成26~30题。

(河北专版)2020中考英语复习方案第一篇教材考点梳理课时训练10Units1_2(八下)试题人教新目标版

(河北专版)2020中考英语复习方案第一篇教材考点梳理课时训练10Units1_2(八下)试题人教新目标版

课时训练(十)Units 1-2(八下)(限时:30分钟)Ⅰ.单项选择1.[2019·武汉]—Dad, what is the loudspeaker saying?—It is to the . The flight to Wuhan is boarding now.A.customersB.passengersC.membersD.tourists2.—Which should we start with, Water World or Space World?—Either is OK.It makes no to me.A.mistakeB.promiseC.differenceD.decision3.[2019·广东]Nobody taught the old lady how to use WeChat. She learned it all by .A.sheB.herC.herselfD.hers4.After two years' physical training, he was and healthier.A.weakerB.longerC.strongerD.shorter5.[2019·广元改编]We'd better our sports meeting because it's going to rain.A.put onB.put upC.put offD.put away6.[2019·青海改编]—What do you usually do before going to bed?—I .ed to write diariesB.am used to sleepingC.am used to readinged to read7.[2019·滨州]They'll succeed in working out the problem because they never .A.wake upB.give upC.look upD.make up8.—What should we do for the disabled children?—You should a study group to help them.A.take upB.set upC.look upD.put up9.The government of China the idea of the Belt and Road in 2013.A.came up withB.kept up withC.made up withD.caught up with10.[2019·青岛]As middle school students, we follow the public rules wherever we go.A.wouldB.shouldC.mightD.couldⅡ.[2019·河池改编]完形填空One day a man saw an old lady standing by her car on the side of the road. He could see that she needed help. 11 he stopped his car in front of her and got out.Even though the man had a smile on his face, the old lady was worried. “12 has stopped to help for the last hour. Is he going to hurt 13 ? He doesn't look safe; he looks poor and hungry,” the old lady thought.He could see that she was worried. So he said, “I am here 14 you, madam. It seems that you have a flat tire(车胎漏气). 15 don't you wait in the car where it's warm while I change the tire for you? By the way, my name is Bryant Anderson.” Though feeling doubtful, the old lady 16 her car.About 20 minutes later, he was done. The old lady asked Bryant 17 she should pay. Bryant 18 thought about being paid. He told her that if she 19 wanted to pay him back, the next time she saw someone who needed help, she could give that person her help.The man waited until the lady started her car and drove off. It was a cold day, but he felt 20 as he went on his way home.()11.A.And B.But C.Or D.So()12.A.Everyone B.Someone C.Anyone D.No one()13.A.him B.her C.me ()14.A.to hurt B.to help C.to trouble D.to visit()15.A.Why B.What C.Which D.When()16.A.got out B.got away C.got into D.got off()17.A.how much B.how far C.how long D.how soon()18.A.ever B.never C.seldom D.always()19.A.clearly B.carefully C.really pletely()20.A.good B.sad C.alone D.angryⅢ.[2018·河北]阅读理解“Volunteering makes you look at the world differently. You see how little things can changea person's life for the better, which makes everyone a better person,” Mason, a volunteer said.National Volunteer Week started in 1974 and is held every April. It is a time to thank volunteers for their achievements. It is also a perfect opportunity(机会) to encourage others to take their first step towards becoming a volunteer. Making the decision to take the first step can be the biggest problem, because they often wonder if they will be able to meet the organization's expectations (期望). Some people fear not knowing anyone else in the group. Not having enough time also prevents some from sharing their abilities.The following tips can help if you have some of these worries:·Start out slowly, and don't add too much pressure. Even a few hours a month can make a big difference in someone's life.·Choose an organization with the same interest and common values.·Work with a veteran volunteer. He volunteered a lot, and he can help you increase the confidence and completely understand the organization's expectations.·Invite a friend or family member to serve. It is a good experience to volunteer with them.·Finally, it is most important to enjoy the volunteer experience and to remember that not all volunteer experiences are perfect. If one experience doesn't work, don't give up and you'll surely find the right opportunity.Spend some time on volunteer work and you will see great changes in people's lives. As Mason discovered during his volunteer experience, “…little things can change a person's life.”21.Volunteering can help . ()A.make a decisionB.see the world clearlyC.thank other peopleD.make a person's life better22.What could be the reason to stop people taking the first step? ()A.They don't have enough time.B.They are prevented by their families.C.They fear that their abilities are shared.D.They don't expect to become volunteers.23.Which of the following can help people take the first step? ()A.Start out quickly.anize a training meeting.C.Invite a friend to be with them.D.Join a group with different values.24.The underlined word “veteran” in the passage means “”.()A.politeB.humorousC.youngD.experienced25.What is the main idea of the passage? ()A.To tell people to make changes in their lives.B.To encourage people to start their volunteering.C.How to make great achievements in volunteering.D.How to keep on volunteering whatever happens.Ⅳ.[2019·唐山玉田二模]任务型阅读阅读短文,并按要求完成26~30题。

(河北专版)2020中考英语复习方案第一篇教材考点梳理课时训练05Units9_12(七下)试题人教新目标版

(河北专版)2020中考英语复习方案第一篇教材考点梳理课时训练05Units9_12(七下)试题人教新目标版

课时训练(五)Units 9-12(七下)(限时:30分钟)Ⅰ.单项选择1.Mary didn't tell her parents that she was going home because she wanted to give them a .A.surpriseB.callC.giftD.shout2.[2018·石家庄新华区模拟]Our math teacher teaches us in a way. We all like his classes.A.specialB.boringC.terribleD.bad3.[2019·黄冈]—What do you think of the new movie The Wandering Earth(《流浪地球》)?—It's wonderful I really like it.A.so; thatB.such; thatC.too; toD.enough; to4.When Flight 3U8633 finally landed in Chengdu, some of the women passengers cried. , nobody was hurt.A.SuddenlyB.LuckilyC.SadlyD.Easily5.[2019·保定二模]Nick a new camera. He has taken lots of pictures with it.A.buysB.is buyingC.boughtD.will buy6.We can't decide to go for dinner because everyone wants to order something different.A.howB. whereC.whyD.when7.Tom! You have grown up and you're no longer a 3-year-old kid. Don't expect me to do for you. Go and tidy your room!A.everythingB.somethingC.anythingD.nothing8.—We are planning a Yangtze River Protection Day this weekend. Do you have any advice?—You'd better signs around the school to tell all the students about that.A.make upB.put upC.set upD.show up9.[2019·武汉]He his English teacher when he was sightseeing in Paris.A.has metB.had metC.metD.would meet10.—Why do you look so tired today?—Because I late last night to watch the football game.A.picked upB.stayed upC.set upD.took upⅡ.[2019·河北]完形填空I have invented robots which improve the work of cars. My love of making things began 11 I was a kid. I really became excited about inventing after I learned about Thomas Edison.One day in fourth grade, our 12 gave us a project in class. We had to write to a company and learn about the products. I thought and thought. 13 I chose the Thomas A. Edison Company. Soon after, the company sent me a book about the life of Thomas Edison. How I enjoyed reading and re-reading about his 14 ! I like the recorded sound and the electric light most. The inventions were clearly printed on my brain.My dad noticed my interest in inventing and 15 me. He showed me how to turn my ideas into plans and then into new things. Once, I surprised my dad 16 a model plane I made. Later, we found a 17 model plane in a store. I learned that different inventors often invent similar things. It is not unusual for this to happen. I also learned that not all great ideas 18 . Failure is a common part of the inventing.As my father and I worked together, I began to realize that my dad was quite an inventor himself. He was always 19 a better way to do a simple job. His guiding hands, together with my 20 in inventing, led me to become an engineer and an inventor. Of course, I also thank Thomas Edison. He is my hero.()11.A.before B.after C.when D.until()12.A.parent B.teacher C.inventor D.engineer()13.A.Easily B.Finally C.Safely D.Quickly()14.A.lights B.projects C.suggestions D.inventions()15.A.mistook B.refused C.chose D.encouraged()16.A.with B.about C.into D.from()17.A.different B.similar rge D.small()18.A.work B.fail e D.end()19.A.looking at B.looking for C.looking after D.looking through()20.A.habit B.story C.interest D.planⅢ.[2019·唐山路南区一模]阅读理解The Vieira family moved to the United States in 1991.At that time, they decided to stop speaking Spanish at home and only communicate in English. This was because they were now living in an English-speaking country.Now the Vieira children are adults, and they sometimes travel to Spain to visit their family and friends. But they cannot communicate with them. Unfortunately this is common. When people move to new countries, they often leave their own customs and mother language behind. This is a mistake because there are many benefits(益处) of knowing more than one language.One advantage of speaking more than one language is that you can communicate directly with more people around the world. You do not have to depend on others to talk for you, so you're more independent. People who know only one language must use others to help them communicate.Furthermore, speaking a second language also allows people to experience other cultures and customs more effectively. Local expressions, vocabulary, and even jokes can have a powerful effect on a person's understanding of another culture. So, knowing more than one language increases your knowledge of other cultures.Finally, having more multi-language speakers improves relationships between countries. If people from different countries can communicate well, the world can become closer. Countries will then have more respect for each other and better understand each other's problems.The benefits of knowing more than one language are clear. In fact, there are no disadvantages. It is very sad that many people don't try to learn another language. It is even worse when people let themselves forget their mother language and become silenced.21.What is the passage mainly about? ()A.The benefits of learning other languages.B.The reasons why people come to America.C.The importance of learning English.D.How to learn another language.22.The passage begins with the experience of the Vieira family in order to . ()A.discuss the need for teaching a new languageB.introduce the passage's main characters to the readersC.describe the advantages of moving to another countryD.show the problems of speaking only one language23.The underlined phrase “multi-language speakers” means people who know .()A.their mother languageB.a new languageC.more than one languageD.body language24.According to the passage, if you can speak more than one language, you can .()A.find a better jobB.make more friendsC.better understand historymunicate more independently25.Based on the last paragraph, which of the following is the worst? ()A.Not knowing another language.B.Forgetting one's mother language.C.Refusing to learn another language.D.Failing to communicate with others.Ⅳ.任务型阅读阅读短文,并按要求完成26~30题。

(河北专版)2019中考化学复习方案【第16课时】元素、化学式、化合价ppt课件

(河北专版)2019中考化学复习方案【第16课时】元素、化学式、化合价ppt课件
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(河北专版)2020中考英语复习方案第二篇语法专题突破专题11简单句试题人教新目标版

(河北专版)2020中考英语复习方案第二篇语法专题突破专题11简单句试题人教新目标版

专题(十一)简单句Ⅰ.单项选择1.[2019·呼和浩特] me an email before you come to Hohhot, and I'll meet you at the train station.A.SendB.SendingC.To sendD.Sent2.[2019·安顺]—Have you seen the hot film The Wandering Earth?—Yes, I have. wonderful science fiction movie it is!A.yet; How aB.already; HowC.yet; What aD.already; What3.[2019·北京]—Excuse me, is this T-shirt?—It's 88 yuan.A.how muchB.how manyC.how longD.how old4.— is it from the Children's Palace to Nanjing South Railway Station, Tom?—About 10 minutes' ride by bus.A.How soonB.How longC.How farD.How much5.[2019·玉林]—Wow! clean air we have today!—Yes. Look! A lot of adults are doing kung fu over there.A.HowB.What aC.How aD.What6.[2019·宜昌]— do you put a lot of snakes into the forest?—To protect the ecosystem.A.WhyB.WhichC.HowD.When7.[2019·凉山州]—What's in the picture on the wall?—There a teacher and some students playing soccer on the playground.A.hasB.areC.isD.have8.[2019·淮安]—Mr. Black, will the parents' meeting last?—It's hard to say. Maybe one hour or more.A.how longB.how muchC.how farD.how often9.[2019·徐州]— can you write in English?—About forty words per minute.A.How farB.How oftenC.How fastD.How long10.[2019·宿迁]— wonderful the music is! What's its name?—Victory.A.HowB.How aC.WhatD.What aⅡ.连词成句A1.better, are, feeling, you?2.people, are, what, they, kind!3.does, which, in, live, building, Jenny?4.cost, the, money, didn't, dictionary, much, me.5.lent, Sam, iPad, to, I, yesterday, my.B6.Beijing, does, live, she, in?7.your, what, are, shoes, size?8.got, yesterday, up, he, late.9.on, books, my, there, desk, some, are.10.look, the, beautiful, how, flowers!C11.my, father, it, bought, yesterday.12.gift, him, gave, a, I, yesterday.13.man, is, young, who, that?14.he, working, hard, is, how!15.card, that, me, pass, black.D16.have, ever, seen, you, the, film?17.wonderful, the, how, party, was!18.sister, wake, don't, your, up, little.19.I, collecting, interested, stamps, in, am.20.there, be, a, tomorrow, will, meeting, sports.E21.for, you, ready, class, are?dy, who, young, this, is?23.noise, make, much, don't, so.24.bed, better, earlier, had, to, you, go.25.how, a, showed, him, plane, make, she, model, to.F26.you, do, a, volleyball, have?27.helped, I, my mom, housework, do, yesterday.28.for, thanks, the, party, planning.29.are, kids, some, playing, in the garden, there.30.carefully, how, she, studies!G31.go, he, walk, often, a, out, does, for?32.did, why, come, late, yesterday, you?33.hot, is, weather, how, the!34.have a talk, we, going, this afternoon, are, to.35.when, got up, know, I, he, this morning.H36.big, is, my, yours, as, apple, as.37.a woolen sweater, I, bought, my mother.38.get home, will, mother, how soon, Tom's?39.me, you, bought, tell, can, the, book, where, he?40.help, you, nice, of, to, how, us!【参考答案】Ⅰ.1.A 2.C 3.A4.C 考查疑问词组辨析。

(河北专版)2020中考英语复习方案第一篇教材考点梳理课时训练14Units9_10(八下)试题人教新目标版

(河北专版)2020中考英语复习方案第一篇教材考点梳理课时训练14Units9_10(八下)试题人教新目标版

课时训练(十四)Units 9-10(八下)(限时:30分钟)Ⅰ.单项选择1.[2019·宜昌]—Time past cannot be called back again.—Yes. Wasting time is a .A.pressureB.fairnessC.choiceD.shame2.[2018·张家口桥东区二模]The old lady is too weak to look after .A.himselfB.yourselfC.herselfD.themselves3.[2019·郴州改编]Every year, books are given away to the poor children in the countryside.A.ten thousandsB.thousands ofC.thousand ofD.ten thousand of4.[2020·原创]People all over the world expect to live in a environment without wars.A.helpfulB.beautifulC.peacefulD.careful5.[2019·南通]—Is everyone here, Jonathan?—No, sir. Millie is absent. She for two days.A.has fallen il lB.has been illC.fell illD.was ill6.—Do you still remember our primary school teacher, Mrs. Liu?—Yes, she always encouraged us and gave us support we met difficulties.A.wheneverB.whateverC.howeverD.whichever7.[2020·原创]I have to my room. It is really in a mess.A.find outB.take outC.clear outD.check out8.[2020·原创]—I don't know where to go this summer vacation.—Why not consider Chengde? There are many places of interest.A.to visitB.visitingC.visitedD.to visiting9.[2019·大庆]Many tourists visit Longfeng Wetland(湿地) all year round, in summer.A.hardlyB.nearlyC.especiallyD.really10.[2019·黄冈]—Where is Catherine? I haven't seen her for days.—She Wuhan. She'll be back next week.A.has gone toB.has been toC.have gone toD.have been toⅡ.[2019·天津]完形填空Miss Chan, our class teacher, is my favorite teacher. We are going to 11 this school and I will miss her very much.Miss Chan is very patient. Whenever we 12 questions in class, she explains to us very carefully. She is also 13 because she cares much about us. She often says to us, “Tell me immediately if you feel unhappy. Share your 14 with me and do not just try to solve it by yourself.”Miss Chan is very generous(慷慨的). One day, she gave each of us a book, Three Days to See, and told 15 we should read more. She once chose our monitor as the most helpful student, and gave him a set of stationery(文具) as a 16 . When she is free, she 17 helps us with our studies and we've made great progress.Not only do all of us like Miss Chan, but Miss Chan also likes my class because she thinks all of us are 18 . She always says she thinks herself very 19 to be the teacher of my class. In fact, Miss Chan is the most thoughtful(体贴的) teacher I have ever met. She always thinks about our feelings. I hope I will go to a high school with 20 as good as Miss Chan.()11.A.leave B.know C.meet D.choose()12.A.spell B.train C.ask D.remember()13.A.surprised B.humorous C.strange D.kind()14.A.chance B.problem C.advantage D.skill()15.A.them B.you D.him()16.A.gift B.mark C.smile D.joke()17.A.seldom B.often C.never D.hardly()18.A.difficult B.careless C.unable D.excellent()19.A.lucky B.silly C.angry D.worried()20.A.stars B.tourists C.teachers D.scientistsⅢ.[2020·原创]阅读理解China Eastern Airlines and other domestic airlines have begun to allow mobile phone use on their flights(航班) or announced plans to cancel the ban(禁令).On Thursday, China Eastern Airlines and Hainan Airlines began to allow passengers to use portable electronic devices(PED), such as smartphones and tablets, but phones still have to be changed to airplane mode(飞行模式). China Southern Airlines and Xiamen Airlines announced Thursday they would allow mobile phone use on all their flights soon.The permission comes after the Civil Aviation Administration of China(中国民用航空局) asked that the ban be canceled earlier this week. According to the guideline before, staffs on the planes needed to ask passengers to turn off any device that could interrupt the flight, even airplane mode was not permitted.In-flight Wi-Fi is available on 74 of China Eastern Airlines' aircrafts, covering all international routes and 166 domestic routes. Hainan Airlines has enabled in-flight Wi-Fi on 17 of its airplanes.“Before, I just slept aboard the airplane, sometimes read magazines in front of me and then had nothing to do. But now, I can use my social network accounts like Weibo or WeChat,” said a passenger named Zuo, who took a flight with Wi-Fi from Shanghai Thursday.Before 2018, mobile phone use on aircraft was banned over safety concerns. The ban is a common international practice, but with technological development and a higher demand from passengers, the ban has been canceled by some airlines.Other Chinese airlines are also considering allowing mobile phone use. A number of airlines from other countries already provide in-flight Wi-Fi service, an important factor for passengers choosing flights of different airlines.21.Which airlines allow mobile phones to be used in the flight now? ()A.China Eastern Airlines and China Southern Airlines.B.Hainan Airlines and Xiamen Airlines.C.China Eastern Airlines and Hainan Airlines.D.China Southern Airlines and Hainan Airlines.22.When you took the plane, you were asked according to the old guideline. ()A.to turn off your smartphoneB.to change your smartphone to airplane modeC.to interrupt the flightD.not to take the smartphone23.What does the underlined word “domestic” mean?()A.Foreign.B.Home.C.Short.D.Long.24.Which of the following is TRUE? ()A.Passengers can call their friends during the flight according to the new rule.B.Passengers used to have nothing to do but sleep during the flight.C.Passengers were banned to use mobile phones before because of safety.D.All the airlines in China allow passengers to use portable electronic devices now.25.What is the main idea of the passage? ()A.Airlines in China began to allow passengers to use portable electronic devices.B.Civil Aviation Administration of China has canceled the ban.C.Important factors for passengers choosing flights.D.Why the Civil Aviation Administration of China decides to cancel the ban.Ⅳ.[2019·保定二模]任务型阅读阅读短文,并按要求完成26~30题。

(河北专版)中考英语复习方案 第19课时 Book 9 Units 11-12权威课件(自学反馈

(河北专版)中考英语复习方案 第19课时 Book 9 Units 11-12权威课件(自学反馈

→(名词)(董事,导演)____ ____ director
3. lead→(n.) ________ leader 4.who→(宾格)________ whom →(所有格)________ whose
5.fill→(adj.) ________ full
自学反馈 重点突破 即时自测
第19课时┃Units 11—12,Book 9
自学反馈 重点突破 即时自测
第19课时┃Units 11—12,Book 9
8.而且这样做将会帮助你更擅长英语或者其他任何一种你想 说的语言。
句 型 再 现 And doing this will also help you __ become better __ at ____ or any other language you wish to speak ____ . English 9.“在韩国, 人们第一次见面时应该做什么?” “他们应 该鞠躬。” —What are people in Korea________ ____ supposed to do when they meet________the________time? for first —They ______________ . are supposed __________ to bow
Take the elevator to the second floor and __________ turn right . The drugstore is_____ ___the furniture between store________ and the bookstore.
4.银行在你左边。 The bank is _________பைடு நூலகம்______ on your left .

英语人教河北专版中考复习方案课件第一篇英语

英语人教河北专版中考复习方案课件第一篇英语
8. 你能把一些东西带到学校来吗? ___C__a_n____ you ____b_r_in_g___some things ____t_o_____ school?
第1课时┃ 基础过关
句型 再现
9.打扰了,索尼娅。
____E__x_cu_s_e__m_e____, Sonia. 10.请拨Alan的电话495 3539。
新课标(RJ)
第1课时 Units 1—6,Book 7A
第2课时 Units 7—12,Book 7A 第3课时 Units 1—6,Book 7B 第4课时 Units 7--12,Book 7B 第5课时 Units 1—3,Book 8A 第6课时 Units 4—6,Book 8A 第7课时 Units 7—9,Book 8A 第8课时 Units 10—12,Book 8A
第1课时┃ 基础过关
句型 再现
3.“这是你的钢笔吗?”“是的,它是。” —___I_s_t_h_is___ your pen? —Yes, ____it__is______.
4.你怎么拼写它? How ___d_o__y_o_u_s_p_e_ll___it?
5.这是我的父母。 ___T_h_es_e__a_re__my parents.
第1课时┃ 基__o_n__th_e__w_a_ll____ 14.在抽屉里__in__th_e__d_ra_w__e_r __ 15.打排球 __p_la_y__vo_l_l_ey_b_a_l_l_ 16.网球拍 __t_e_n_n_is_r_a_c_k_e_t__ 17.许多 ___lo_t_s_o_f_/a__lo_t_o_f_ 18.健康食物 __h_e_a_l_th_y_f_o_o_d___ 19.列清单 ___m_a_k_e_a__li_s_t ___

全品中考复习方案英语新课标河北版化学河北专版主题三

全品中考复习方案英语新课标河北版化学河北专版主题三
12·盐城] 2011 年诺贝尔化学奖被授予以
色列科学家丹尼尔·谢赫曼,以表彰他在发现准晶体方面
所作出的突出贡献。准晶体可能具有下列性质,其中属于
化学性质的是
(D )
A.密度低
B.耐磨损
C.导电性差
D.抗氧化性强
[解析] 物质的物理性质一般包括物质的颜色、气味、 状态、溶解性、密度、熔点、沸点等,化学性质一般包括 可燃性、氧化性、稳定性、酸碱性等。
化或物理变化。
例 1 [2012·河北] 下列变化属于物理变化的是( A )
A.酒精的蒸发
B.食物的腐败
C.金属的冶炼
D.蜡烛的燃烧
[解析] 食物腐败、冶炼金属、蜡烛燃烧等均产生了新 物质,属化学变化。
第14课时┃ 归类示例
[2012·聊城] 下列现象中,与化学变化有关的

(C )
A.滴水成冰
B.铁丝弯曲
(B )
A.用白瓷板盖在蜡烛火焰上,在白瓷板上可观
察到黑色的粉末状物质
B.变化时发光发热
C.在火焰上方罩一个干而冷的烧杯,杯壁上有
水珠出现
D.用涂有澄清石灰水的烧杯罩在火焰上,澄清
石灰水变浑浊
第14课时┃ 归类示例
[方法点拨] 区分物理变化和化学变化的根本依据 是看是否有新物质生成,化学变化过程中有新物质产 生,物理变化过程没有新物质产生。从微观的角度看, 即是否有新的分子生成。
第14课时┃ 归类示例
[2012·衡阳] 下列各种物质的用途中,主要利
用了其化学性质的是
(C )
A. 活性炭用于净水
B. 钨用于制灯泡中的灯丝
C.焦炭用于冶炼生铁
D.液氮用于医疗上冷冻麻醉
[解析] 焦炭冶炼生铁的过程中焦炭参与反应生成了 二氧化碳。而活性炭的吸附性是物理性质,钨用于灯丝主 要用了金属钨的高熔点性,液氮用于冷冻麻醉利用了液氮 状态改变形成深度低温环境。

(河北专版)2019中考化学复习方案【第24课时】化学与健康 有机合成材料ppt课件

(河北专版)2019中考化学复习方案【第24课时】化学与健康 有机合成材料ppt课件
过了中后卫布林德的头顶下落就算德罗巴不用跳起不用移动也可以顶到这个球这个球距离球门不到 的向禁区内移动抢点或者解围但是一切都太晚了布隆坎普几步来到底线附近在无人盯防的情况下右脚传出了一记漂亮的弧线球找中路的德罗巴这脚球传的速度奇快又非常舒服越 松的接到皮球把球一磕改变了方向然后快速下底这个时候阿贾克斯的球员发现了布隆坎普的动作顿时大惊失色梅尔奇奥特快速向移向边路防止布隆坎普的传中双方的球员都纷纷 慢慢移动不知不觉的已经到了几乎和禁区平行的位置就在几乎所有人都以为阿尔蒂多雷要远射的时候阿尔蒂多雷却突然把球传到了一个所有人都想不到的地方右边路布隆坎普轻 太阳穴的位置触球球直接飞出了底线顿时眼镜碎了一地谁都想不到在距离球迷 击德罗巴德罗巴庞大的身躯在德波尔有意的撞击之下发生了一点改变这一点改变就是致命的因为布隆坎普的这脚传球太快德罗巴本来是想用额头把球砸进球门这一下却变成了用 有那么强大了早就看到了这个落点却被德罗巴卡住位置的德波尔终于等到了机会老奸巨猾的德波尔也貌似要跳起头球其实他根本就不可能碰到球他只是佯装跳起用身体狠狠的撞 状的看着禁区看着德罗巴希望德罗巴不要抢到点这时候德罗巴却出人意料的起跳了他想微微跳起然后把球砸向球门如果双脚站在地面上德罗巴就是巨人安泰但是跳起之后他就没 被打丢了德罗巴沮丧的跪在草皮上不住的摇头痛骂自己是傻 呼的这时气得狠狠的蹲下捶地他不能想象在这一瞬间德罗巴那浆糊脑袋里想的是什么距离球门这么近怎么顶不不能进非要玩花样尼玛觉得是花样滑冰玩艺术了加分啊一个必进球 略了这是防守失误的起因阿贾克斯逃过一劫但是这样的错误不能再犯下一次阿尔克马尔人海会再给你们机会吗解说员指责阿贾克斯的球员在这个球的处理上太大意竟然没发现移 X啊啊啊不可思议一个必进球被德罗巴打飞这是一个打飞比打进更难的球阿尔克马尔的球员真是奇葩啊布隆坎普被忽 5米的情况下德罗巴把这个球顶飞了阿贾克斯的球迷为德罗巴发
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新课标(RJ)
第14课时 物质的变化和性质 第15课时 认识几种化学反应 第16课时 质量守恒定律和化学方程式 第17课时 根据化学方程式的简单计算
第14课时┃ 物质的变化和性质
第第1144课课时时 物物质质的的变变化化和性性质质
第14课时┃ 冀考解读
冀考解读
学 习 1. 能识别物质的物理性质和化学性质。 目 2.认识化学变化的基本特征,理解反应现象和本质的联系。 标
第14课时┃ 归类示例
生活或学习中我们可以运用哪些性质(填在 下列括号中)区别厨房中的下列物质?
(1)糖和食盐:( 味道 ); (2)铜导线和铝导线:( 颜色 ); (3)白酒和白醋:( 气味(味道) ); (4)白酒和水:( 气味 ); (5)面粉和食盐:( 溶解性 )。
第14课时┃ 归类示例
[解析] 金属铝具有特殊的性质:铝制品在空气其表 面可以生成一种致密的氧化物保护膜,阻止进一步的腐 蚀,因此虽然铁比铝活泼性弱,但不如铝的防腐蚀性能好。
年份
考点
题号
题型
考点在该 分值 题中比 (分)
难易
2010 能区分物理变化和化学变化
8 选择题
1
2*1
中等
2011 能区分物理变化和化学变化 2012 能区分物理变化和化学变化
8 选择题
1
8 选择题
1
2*1
中等
2*1
中等
第14课时┃ 考点聚焦
考点聚焦
考点1 物理变化和化学变化
物理变化
化学变化
概念
第14课时┃ 归类示例
归类示例
► 类型一 区分物理变化和化学变化 命题角度:判断生活中常见的变化过程是否是化学变
化或物理变化。
例 1 [2012·河北] 下列变化属于物理变化的是( A )
A.酒精的蒸发
B.食物的腐败
C.金属的冶炼
D.蜡烛的燃烧
[解析] 食物腐败、冶炼金属、蜡烛燃烧等均产生了新 物质,属化学变化。
第14课时┃ 归类示例
不能用来判断蜡烛发生化学变化的现象

(B )
A.用白瓷板盖在蜡烛火焰上,在白瓷板上可观
察到黑色的粉末状物质
B.变化时发光发热
C.在火焰上方罩一个干而冷的烧杯,杯壁上有
水珠出现
D.用涂有澄清石灰水的烧杯罩在火焰上,澄清
石灰水变浑浊
第14课时┃ 归类示例
[方法点拨] 区分物理变化和化学变化的根本依据 是看是否有新物质生成,化学变化过程中有新物质产 生,物理变化过程没有新物质产生。从微观的角度看, 即是否有新的分子生成。
第14课时┃ 考点聚焦
[注意] ①不能根据现象来判断物理变化和化学变 化。例如,电灯通电时发光、放热,是物理变化。
②爆炸不一定都是化学变化。例如,锅炉的爆炸、 车胎的爆炸是物理变化。
第14课时┃ 考点聚焦
考点2 物理性质和化学性质 1.物理性质:指物质不需要发生__化__学____变化就表现
出来的性质。如物质的颜色、状态、气味、熔点、沸点、 密度、硬度、导电性、导热性、挥发性、延展性等。
第14课时┃ 归类示例
[2012·镇江] 物质的性质决定物质的用途。
下列对应关系不成立的是
( B)
A.氮气化学性质不活泼,可用作食品保护气
B.铁的活泼性比铝弱,铁制品比铝制品在空气中
更耐腐蚀
C.磷燃烧能产生白烟,可用于制作烟幕弹
D.食醋具有酸性,可用于消除松花蛋中所含碱性
物质的涩味
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2.化学性质:指物质在__化__学____变化中表现出来的性 质。如可燃性、氧化性、稳定性、还原性、酸碱性、助燃 性等。
3.物质性质与物质变化的关系
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[点拨] 合理区分物质的性质和物质的变化,变化描 述的是一个过程,有变化前、变化时、变化后等过程; 性质是描述的物质的属性和性能,往往使用“能、会、 易、可以”等字眼。
第14课时┃ 归类示例
[2012·盐城] 2011 年诺贝尔化学奖被授予以
色列科学家丹尼尔·谢赫曼,以表彰他在发现准晶体方面
所作出的突出贡献。准晶体可能具有下列性质,其中属于
化学性质的是
(D )
A.密度低
B.耐磨损
C.导电性差
D.抗氧化性强
[解析] 物质的物理性质一般包括物质的颜色、气味、 状态、溶解性、密度、熔点、沸点等,化学性质一般包括 可燃性、氧化性、稳定性、酸碱性等。
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[2012·聊城] 下列现象中,与化学变化有关的

(C )
A.滴水成冰
B.铁丝弯曲
C.消化食物
D.水沸腾
[解析] 食物消化过程是食物被氧化产生二氧化碳和各种 复杂有机物的过程,产生了新的物质,因此与化学变化有关; 水变成冰和水沸腾是水的状态的改变,铁丝弯曲是形状的改 变,这些变化过程中没有新物质产生,因此与化学变化无关。
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► 类型二 区分物理性质和化学性质
命题角度:根据对物质性质的描述,区分物理性质和 化学性质。
例 2 [2011·保定一模] 通常状况下,氧气具有的化学性
质是
(D)
A.密度比空气大
B.不易溶于水
C.无色无味
D.能助燃
[解析] 能助燃是在燃烧这个化学变化中才能体现出来的 性质,所以属于化学性质。
指没有生成_其__他__物__质___ 的变化
指生成了_其__他__物__质___的变化
根本 区别
不产生其他的物质
产生了其他的物质
现象 一般只发生形状或状态 一般有发光、放热、变色、
区别 变化
放出气体、生成沉淀等现象
微观 区别
构成物质的分子不变
构成物质的分子发生改变
举例 水结成冰,石蜡熔化等 木柴燃烧、铁生锈等
► 类型三 知道物质性质与用途的关系 命题角度:从物质的用途中考查对物质性质的理解。
例 3 [2011·邢台模拟] 下列物质的用途中,主要利用
其物理性质的是
(A )
A.铜制作导线
B.熟石灰中和土壤酸性
C.液态氢作火箭燃料
D.氦、氩作保护气
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[解析] 铜作导线是因为其具有导电性,利用的是铜 的物理性质;熟石灰具有碱性,可以中和酸性土壤,利 用的是熟石灰的化学性质;氢气具有可燃性,可用作高 能燃料,利用的是氢气的化学性质;氦气、氩气化学性 质很稳定,所以可以作保护气。
第14课时┃ 归类示例
[2012·衡阳] 下列各种物质的用途中,主要利
用了其化学性质的是
(C )
A. 活性炭用于净水
B. 钨用于制灯泡中的灯丝
C.焦炭用于冶炼生铁
D.液氮用于医疗上冷冻麻醉
[解析] 焦炭冶炼生铁的过程中焦炭参与反应生成了 二氧化碳。而活性炭的吸附性是物理性质,钨用于灯丝主 要用了金属钨的高熔点性,液氮用于冷冻麻醉利用了液氮 状态改变形成深度低温环境。
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