专题2 阅读理解37
高一英语阅读理解专题素质拓展主题2Zeigarnik效应(选材浙江省杭州市高级中学上学期期末考试高一
2024年高一英语阅读理解专题素质拓展主题2:Zeigarnik效应【核心阅读材料选材:浙江省杭州市高级中学20232024学年上学期期末考试高一英语】①No one likes interruption. We are born to seek balance and order. No matter what it is that you are doing, being interrupted involves a forceful stop midway and then having to reenter your former state, sometimes with great difficulty. Popular belief has it that interruption breaks the flow of your thinking and affects productivity negatively, and so it is advisable that you have an uninterrupted session of intensive work before your next break.②However, a Russian psychologist, Bluma Zeigarnik, might tell you otherwise. The connection between interruption and memory drew her attention when she was dining in a restaurant. She noticed how the waitresses had an amazing memory of the detailed orders yet to be paid for, but little memory of the orders that were already pleted.③Back in her laboratory, she conducted studies in which subjects were required to plete various puzzles. Some of the subjects were interrupted during the tasks. All the subjects were then asked to describe what tasks they had done. It turns out that adults remembered the interrupted tasks 90% better than the pleted tasks, and that children were even more likely to recall the unpleted tasks. To put it another way, unpleted tasks will stay on your mind until you finish them!④In parison to tasks that were already finished and ones that we haven’t even started, halfdone projects are highlighted in the mental todo list our brains draw up for us. Zeigarnik described this finding in the late 1920s, which was later called Zeigarnik effect. One possible explanation is that with interrupted tasks, we are longing for them to be pleted, in order to regain a sense of balance. Finishing them also means that we can finally clear up the mental backlog and give the space to more uping tasks.⑤Zeigarnik’s effect can be found everywhere, especially used in media and advertising. Have you ever wondered why cliffhangers work so well or why you just can’t get yourself to stop watching that series on Netflix? Ernest Hemingway once said about writing a novel, “It is the wait until the next day that is hard to get through.” So next time, when you are interrupted, appreciate it and take advantage of it to promote your productivity.【核心材料知识深挖】这篇文章探讨了干扰对人们思维和生产力的影响,以及Zeigarnik效应。
专题02 阅读、完形、语法填空、书面表达组合练-攻克2021年中考新题型英语语篇训练
语篇专题练习(二)一、阅读理解A(中考模拟)When I was a child I never said, "When I grow up, I want to be a CEO," but here I am. When I look back on my career, I realize the road to becoming a CEO isn't a straight, clear path. In fact, no two paths are the same. But whether you want to be a boss one day or not, there's a lot to learn from how leaders rise to the top of successful companies.As this series of stories shows, the paths to becoming a CEO may be different, but the people in that position(位置) share the qualities of commitment(义务), work ethic(道德)and a strong desire for building something new. And every CEO take risks along the way—putting your life savings on the line to start a software company or leaving a big business to be one of the first employees at a startup.I grew up in Minnesota, and learned how to be an entrepreneur(企业家)from my father, who has run a small business for almost 30 years. I went to Georgetown University and tried a lot of business activities in college with success. And I always had a dream job pattern(模式): to walk to work, work for myself and build something for consumers(顾客).I'm only 29, so it's been a quick ride to CEO. Out of college, I worked for AOL as a product manager, then moved to Revolution Health and ran the consumer product team. In mid-2007 I left Revolution Health and started LivingSocial with several other workmates, where I became a CEO.Career advice: Don't figure out where you want to work, or even what industry you'd like to work at. Figure out what makes you do so. What gives you a really big rush? Answer why you like things, not what you like doing. . . and then apply it to your work life. Also, just because you're graduating, don't stop learning. Read more books than you did in college. If you do, and they're not, you're really well-positioned to succeed in whatever you do.1. What can we know from the first paragraph?A. The writer hasn't achieved his childhood ambition.B. The writer thinks there is some easy way to become a CEO.C. The writer had an ambition of becoming a CEO in his childhood.D. The writer believes success stories of CEOs can be beneficial(有益的) to everybody.2. According to the writer, successful CEOs should _____.A. try not to take risksB. stay in the same businessC. have a strong sense of creativityD. save every possible penny3. What can we know about the writer from the passage?A. He started LivingSocial when he was still a student of Georgetown University.B. He used to run the consumer product team for AOL.C. His business activities at college ended up in more failure than success.D. His father had far-reaching influence on him.4. What does the underlined phrase “figure out” mean? ______.A. 断定B. 弄清C. 理解D. 领会5. Which of the following proverbs may the writer agree with according to the last paragraph?A. Well begun is half done.B. Everything comes to him who waits.C. Time and tide wait for no man.D. One is never too old to learn.B(·牡丹江改编)Do you often use plastic straws? You probably use them to drink lots of things, such as cola or milk tea. 6 They are made in 10 minutes, used in 20 minutes and remain on the earth for over 100 years since they can't be broken down easily.But how do plastic straws get into the ocean? Through human mistakes, they are often thrown everywhere.The waste management in some areas is so poor.All gutters lead to our ocean.7 Once a turtle was found bleeding because a 12centimeterlong plastic straw was pushed into its nose.How terrible!8 That is enough to circle nearly twoandahalf times around our planet! If we didn't act now, there would be more plastic in the ocean than fish by 2050.Luckily, more and more people around the world have realized this problem.They begin to consider if they really need to use plastic straws when drinking drinks.So what can we do to reduce plastic pollution?9 For example, next time if you go to a restaurant, make sure you order your drink without a straw.What if people need to use a straw? There are reusable straws that can be cleaned and reused instead.Starbucks has started to offer strawless lids and paper straws instead of plastic straws in almost 1,000 stores in Shanghai and Shenzhen.Starbucks is not alone.10 It is hoped that more businesses and customers will play a part in protecting our environment.A.Even worse, plastic straws kill ocean life.B.Plastic straws are small but they are a big problem.C.The simplest way is to say “No”to singleuse plastic, like straws.D.McDonald's has also taken action to reduce the use of plastic straws.E.In fact, around 500 million plastic straws are used every day in the US alone.6.B 7.A 8.E 9.C 10.D二、(模拟改编)完形填空A Michigan high school football team came together to surprise their beloved water boy, Robby Heil, who has Down syndrome.He's a senior school student and has 11 as an assistant supplying team drinking water for the school's football team for four years.The team decided to do something special for Robby, so they designed a 12 just for him.Last Friday, the team put Robby in the game and gave 13 the ball.As the crowd repeated his name loudly, Robby ran down the field and scored a touchdown.Robby's father 14 the moment on his video camera, 15 his mother fell to her knees with joy as she watched from the sidelines.The family was really happy and also surprised by all of the 16 they have received.When the head 17,Burnside, who planned the whole event, telephoned the coach of the other team, everyone was 18 all for it.When Robby was scoring, everyone was 19 his name.All the players cheered him, 20 the opposing team—they even gave Robby a sports shirt that they all had 21 .“I think the sportsmanship is the great part,”said Burnside.“The sportsmanship from both sides was just 22 .Their coaches were in tears, and our coaches were in tears.When they watched the game, their 23 also had signs with Robby's numbers up.”“Robby is just a great kid.He 24 a lot to the kids,”Burnside added.“I am hoping that everybody can learn from him.I've learned 25 from him than he has learned from me in the past four years.”(C)11.A.played B.learnedC.worked D.helped(B)12.A.course B.gameC.school D.team(C)13.A.them B.herC.him D.it(C)14.A.enjoyed B.imaginedC.recorded D.chose(B)15.A.unless B.whileC.until D.since(A)16.A.support B.adviceC.trust D.hope(D)17.A.player B.studentC.teacher D.coach(D)18.A.probably B.secretlyC.nervously D.immediately(A)19.A.shouting out B.shouting atC.shouting to D.shouting down(D)20.A.above B.insideC.except D.including(D)21.A.needed B.wornC.washed D.signed(C)22.A.popular B.commonC.amazing D.different(A)23.A.stands B.computersC.rooms D.books(B)24.A.reads B.meansC.sends D.speaks(C)25.A.worse B.betterC.more D. less三、语篇填空第一节(原创)Baby wasn'run with her bad leg.How far was the other side? I don't know, but it took us a long, long time.It was more difficult for me than Baby in the end.I'm a walking, climbing animal; deer are running, jumping, swimming 27.My arms and legs hurt, my body felt heavy and I swam more and more slowly. But Baby was always there beside me, touching me all the time, and her legs were 28 quickly in the water.She was warm,while I was cold, and that helped me.The moon went 29 clouds and we swam in the dark.I was happy about that 30 I was afraid the wolves would see us.When my feet hit stones under me, I knew the water wasn't deep any 31.I stood up.A minute later Baby was walking too.We walked out of the water.My legs couldn't 32 me up.I half fell and lay on the 33 and felt very happy.Baby lay beside me, wet but warm.I slept for a little while.I've just 34 up.We have to begin moving soon.It's still night, but we must be far away from here by morning.Some of the ground is soft.Soft ground is 35 because the wolves can see where we have gone.We must go on the hard, stony places.26.easily 27.animals28.moving 29.behind30.because 31.more32.hold 33.ground34.woken 35.dangerous第二节(原创)I haven't been out since the end of January because of COVID19.But the good thing is that all us Chinese have united to fight the virus.Many brave men and women are fighting it.They gave 36 their holidays and said, “Let's go to Wuhan to help.”37 is a very old man among them.His name is Zhong Nanshan.He's 84 years old, but he's still there fighting the virus.Many other doctors and nurses are fighting 38 protect us.They're all the true heroes.Thanks to them and many others, it looks like things are getting better 39 better in China.China is a very big and old country, and over thousands 40 years we faced many problems.Fighting the virus is just one of them.Other countries will fight the virus, too, and together we will win.When it's all over we'll be able to enjoy the rainbow that follows a very bad storm.36.up37.There38.to39.and40.of四、(2020·营口改编)补全对话A: Hi, Peter! Do you have any plans for the coming vacation?B: Yes, I'm going to Yunnan.A: 41.That sounds good/ That's great/…!How will you go there?B: 42.I'll go there by plane/by air .A: I've dreamed of going to Yunnan for a long time.43.May/Can I go with you ?B: Of course! We can book the flight tickets together.44.When do you want/plan to go ?A: How about July 20? The earlier, the better.I'd like to take a vacation before going to high school.B: OK.45. Do you know about Y unnan/any places of interest in Yunnan ?A: Yes, and I have some friends there.B: Great! And we can look up some information about excellent hotels together.A: OK.I can't wait to enjoy our vacation!五、(改编)书面表达假如你是李华,某英语网站正在举办以“感恩父母”为主题的征文活动。
人教英语3年级下册Unit2【单元专题卷】
【单元专题卷】人教三起英语3年级下册Unit2专题01词汇与句子一、语音选择题选出与所给单词画线部分读音相同的一项。
1.seven()A.ten B.me2.leg()A.red B.nose3.cat()A.China B.bag4.park()A.love B.party5.nice()A.black B.like选出与所给单词划线部分读音相同的一项。
6.blackboard()A.rubber B.parrot C.don’t7.down()A.dog B.please C.door8.listen()A.is B.music C.class9.book()A.go B.bus C.birthday10.leg()A.pet B.bad C.have选出每组单词中画线部分读音不同的一个。
11.A.pen B.pencil C.she12.A.he B.seven C.we 13.A.ten B.leg C.me 14.A.men B.three C.feet 15.A.hobby B.hospital C.post二、词汇选择题选出与所给单词属于同类的一项。
16.he()A.new B.she17.cat()A.panda B.that 18.Canada()A.seven B.China19.man()A.red B.woman 20.grandpa()A.grandma B.no选择不同类的单词。
21.A.father B.mother C.desk 22.A.body B.arm C.eye 23.A.is B.are C.be 24.A.boy B.girl C.son 25.A.open B.close C.sister找出下列每组中不同类的单词。
26.A.she B.he C.your 27.A.boy B.and C.girl 28.A.mother B.family C.father 29.A.China B.pupil C.Canada30.A.teacher B.brother C.sister三、词汇分类grandfather leg blue brother grandmother eye green sister mouth mother father head uncle arm red a unt white31.colour:__________32.body:__________33.man:__________34.woman:__________四、选择正确图片/词句35.Ben:Hello.I’m Ben.I’m a boy.I’m a student.I’m ten.()A.B.C.36.He’s my grandfather.()A.B.37.Amy:Who’s that woman?()Mike:She is my grandmother.A.B.C.38.She’s my friend.()A.B.39.()A.grandfather B.brother 40.Grandpa and grandma.()A.B.41.Make your eyes big.()A.B.五、根据字母/中文提示完成单词补全单词,并写出中文意思。
小学三年级语文37篇课外阅读练习题(附答案)
三年级语文课外阅读训练专题学校班级姓名1. 五花山春天的山是绿色的,那绿色淡淡的,许多树叶刚冒出芽来,还带着嫩嫩的黄色呢。
夏天的山也是绿色的,那绿色浓浓的,一片片树叶,不管是大的还是小的,都像被绿油彩涂过,连雨点落上去,都给染绿了。
秋天的山不再是一种颜色了。
下过一场秋霜,有的树林变成了金黄色,好像所有的阳光都集中到那儿去了;有的树林变成了杏黄色,远远望去,就像枝头挂满了熟透的杏和梨;有的树林变成了火红色,风一吹,树林跳起舞来,就像一簇簇火苗在跳跃;还有的树林变处紫红紫红,跟剧场里的紫绒幕布的颜色一样。
只有松柏秋霜,针一样的叶子还是那么翠绿。
秋天的山一片金黄,一片火红,一片翠绿……人们给这五颜六色的山起了个好听的名字,叫“五花山”。
……”1、这篇短文共写了______、______、______三个季节时候的山,重点写了______季的山的景色。
(4分)2、秋天的山有______、______、______等颜色。
(3分)3、画出第四自然段中的比喻句。
(3分)2. 夏季的小兴安岭夏天的小兴安岭,树木长得葱葱茏茏,密密层层的枝叶把森林封得严严实实的,挡住了人们的视线,遮住了蓝蓝的天。
早晨,雾从山谷里升起来,整个山林浸在乳白色的浓雾里。
太阳出来了,千万缕向箭一样的金光,穿过树梢,照射在工人宿舍门前的草地上。
草地上盛开着各种各样的野花,红的、黄的、白的、紫的、真象个美丽的大花坛。
……”1、这是一段写小兴安岭——————的景色。
2、这一段共有—————句话。
先写—————,接着描绘————,然后描写———,最后写—————。
3、这一段话有二个比喻句。
一句把————比作————,另一句把————比作———。
3. 三个和尚(shàng)传说古时候,一个活泼伶俐(líng lì)的小和尚来到山上的一座庙(miào)里。
开始,他勤快地挑水,不但自己够喝,还往菩萨(púsà)手中的净瓶里灌水,净瓶里的柳枝活了。
【单元专题卷】人教(3起)英语3年级下册Unit2专题02 阅读
【单元专题卷】人教三起英语3年级下册Unit2专题02 阅读一、选内容补全对话/短文Sarah: _____1_____, Chen Jie! Look, my family are having a picnic(野餐).Chen Jie: Wow, they are so happy. _____2_____Sarah: He’s my grandfather.Chen Jie: Is she your grandmother?Sarah: _____3_____ Look at that woman, she’s my mother.Chen Jie: How beautiful! Who’s that boy? _____4_____Sarah: Yes, he is.Chen Jie: _____5_____A .Who’s that man?B .Is he your brother?C .Good afternoonD .He is so cute.E .Yes, she is.Jim: Hello, Mike!Mike: ______6______ Who's that boy?Jim: ______7______ He has short hair and big eyes.Mike: ______8______Jim: No, he isn't.Mike: ______9______Jim: He's my teacher.Mike: Who's that woman?人教3起3下·英语Jim: ______10______ My mother is a teacher, too. A.She's my mother.B.He's my brother, Tom.C.Who is he?D.Is that man your father?E.Hi, Jim.Alice: Hello, Hector.Hector: ______11______Alice: Who's that man?Hector: ______12______Alice: Is he a student?Hector: No, he isn't. ______13______Alice: ______14______Hector: Guess.Alice: Is she your mother?Hector: ______15______A.Who's that woman?B.Hello, Alice.C.Yes, she is.D.He is my big brother.E.He is a teacher.Cheng Jie: Who's that boy?Amy: _____16_____Cheng Jie: Is she your mother?Amy: _____17_____Cheng Jie: Is he your father?Amy: _____18_____A.Yes, she is.B.He's my brother.C.No, he isn't.Lee:Who’s that woman?Huahua:_____19_____Lee:Is she an actress?Huahua:_____20_____Lee:She’s beautiful!Huahua:_____21_____Lee:_____22_____Huahua:He’s my father.He’s a teacher.Lee:_____23_____Huahua:Yes,she is.We are a family.A.Thank you.B.Is she your grandmother?C.No,she isn’t.D.She’s my mother.E.Who’s that man?John: Come here, friends. Look at the photo(照片). ____24____, Amy? Amy: He is my father.Lucy: Who is that old woman?Amy: ____25____Sarah: Is the girl your sister?Amy: ____26____ It's me.A.No, she isn't.B.Who is that man?C.She is my grandmother.A: ____27____ Miss White.B: Good morning, Amy. ____28____A: He’s my father.B: ____29____A: She’s my mother.B: ____30____A: No, He isn’t my brother. ____31____.B: ____32____C: I’m from England(英格兰).A.Who’s that man?B.Where are you from, Jack?C.Is he your brother?D.Good morning!E.Who’s that woman?F.He’s my friend, Jack.二、阅读选择Hi, my friend. I’m Mike. I’m from the UK. I’m eleven. Look! This is my room(房间). A ball is under the bed.A toy boat is on the desk. I like strawberries. I don’t like watermelons. My brother Jim likes oranges. He is fat and tall. He is twelve. He has small ears and big eyes.33._____ is from the UK. ()A.Jim B.Mike C.Friend34.A boat is _____ the desk. ()A.under B.in C.on35.Jim likes _____. ()A.oranges B.strawberries C.watermelons36.Mike is _____. ()A.10B.11C.1237.Jim has _____. ()A.small ears B.big eyes C.Both A and BMy name is Tim. I'm a boy. I'm from Australia. I'm 6 years old. I'm a new student. My father is a tall man. He is a teacher. He teaches English in our school. My mother is a beautiful woman. She is thin. She has big eyes and long hair. She is from the UK. My brother is Tom. He is 10. He is short. He is a funny boy. I love my family. 38.Tim is a ______. ()A.student B.girl C.teacher39.Tim is ______ years old. ()A.five B.six C.ten40.Tim's father is ______. ()A.fat B.tall C.short41.Tim's mother has ______. ()A.big eyes B.long hair C.big eyes and long hair42.Who is Tom? ()A.He's Tim's father.B.He's Tim's brother.C.He's Tim’s friend.看图,选择正确答案。
专题02必修二Unit2单元基础达标练高考英语一轮科学解决方案(人教版2019)
专题02 必修二Unit2根底学问一遍过单元根底达标练Ⅰ. 单词拼写1.Many animals are being ___________(非法地) hunted and their habitats are being destroyed. 2.In order to make a living, they had to _____ (猎杀) animals.3.He rushed out of the house ___________(一……就……) he heard the alarm.4.We all need to take measures to ________ (削减) our carbon footprint.5.As we all know, some students are under great _____ (压力) nowadays.6.If you want to _____ (射中) the target, you must aim at it a little bit higher.7.There ________ (存在) a bank across the street.8.It can take a long time to _____ (康复) from an operation.9.Museum rules should be strictly____________ (遵守) and children should not be treated as an exception.10.After many years, this coastal area was finally named a national wildlife ____________(爱护区) last year.Ⅱ. 单句语法填空11.The fox ran away before the ___________ (hunt) shot it.12.The plan ________(not carry) out well at present.13.Hundreds of tree species face ______〔extinct〕.14.A poster hangs on the wall of my room, ___________ (remind) me that my favourite movie is approaching.15.The President has let it be known that he does not intend _________(run) for election again. 16.Drug manufacturing is __________________ (profitable) business in the U.S.17.An earthquake __________ (measure) 6.1 on the Richter scale struck California yesterday. 18.The explosion made a _________(mass) hole in the ground.19.Evidence gained from ________ (observe) and experiment is often used to confirm (证明) a scientific theory.20.He_________(observe) the stars for 30 years up to now.Ⅱ.阅读理解AWhen you enjoy your morning cup of tea, you are probably not aware that those tea leaves can mean injury, or even death, for Asian elephants wandering Indian tea gardens.In the Indian state of Assam, growing numbers of tea farms are destroying the Asian elephant’s habitats and endangering their population. Much of the forest land where tea is grown in Assam is flat and thus farmers must dig drainage trenches or small channels to prevent water from accumulating and hurting the plants. The trenches, however, can be death traps for the elephants.Since the elephants need to use tea plantations as landmarks when traveling in forests, they almost unavoidably have to move through the farms. Moreover, because there are fewer humans around, pregnant females often use teagrowing areas as safe shelters to give birth. But baby elephants, still not used to rough ground may easily fall into the trenches and get hurt. Once injured, they might not be able to climb out. When mothers try to dig their babies out, both may be trapped in thick mud, even be killed. Furthermore, elephants are known to resist leaving their sick or dying behind, and a group may stay at a trench with a trapped baby for hours, unwilling to move on until all hope is lost.Is there possibility for elephants to live in harmony with the booming tea business? Elephant Friendly Tea is an organization that takes the initiative to make it possible. The organization encourages consumers to choose brands that take an active part in elephants protection, and has established a certification program to reward tea growers who are doing it right. Until now, only smaller tea brands have been certified, but awareness is growing. The organization believes thatpeople may be encouraged to buy elephantfriendly brands when they know more about the risk tea can cause to these endangered animals.21.Why do farmers in Assam dig trenches?A.To trap elephants.B.To mark boundaries.C.To protect tea trees.D.To expand tea farms.22.What can we say about baby elephants?A.They get stuck by the sharp branches of the tea trees.B.They have difficulty moving around the uneven fields.C.They might miss the landmarks while travelling in forests.D.They fail to find a safe shelter when climbing out of trenches.23.What does “it〞underlined in the last paragraph refer to?A.Encouraging consumers to choose highquality brands.B.Rewarding tea growers for protecting the environment.C.Promoting elephantfriendly trenches and organizations.D.Creating a winwin situation for elephants and tea farms.24.Which is the most suitable title for the text?A.The Trenches Pose Threats to ElephantsB.Habitat Loss Affects Endangered AnimalsC.Growth of Tea Gardens Benefits PlantationD.Farms Sponsor Environmental OrganizationsB“Towards thee I roll, thou alldestroying but unconquering whale; to the last I grapple withthee; from hell’s heart I stab at thee; for hate’s sake I spit my last breath at thee.〞Captain Ahab’s dying declaration of defiance (抗争) is among the most famous passages in Herman Melville’s novel.In reality, such victories of the hunted over the hunter were a fantasy in the cruel world of industrial whaling. The biggest cetacean of them all, the blue whale, had all but disappeared from the Southern Ocean by the time a ban on hunting it was introduced in 1967.Sightings of the largest mammal ever to live on the earth had been rare in the region since then. Not any more. A survey of coastal waters around the island of South Georgia in the subAntarctic has had remarkable results.In just over three weeks, in the krillrich waters of what was once their main feeding ground, the movements of 55 Antarctic blues were recorded by the British Antarctic Survey. The finding was described as “truly, truly amazing〞by one cetacean specialist. It suggests that when a prehensive audit (审计), due in 2021, is carried out, there is a good chance that the species will prove to be in full recovery mode, as are humpbacks and other whales in the southern hemisphere.Three years ago, the Natural History Museum established a 25m skeleton (骨架) of a blue whale and named it Hope, intending to inspire new generations to build a sustainable future.The return of the world’s most splendid ocean travellers to southern waters should serve as an example for wider possibilities of conservation. Ecological wrongs can be righted, or at least mitigated, with sufficient will and organisations.The more general eback of the whale for which environmental campaigners should take a great deal of credit — can be an inspiration for victories yet to be won. It could also act as an added motivation to action on the climate emergency.25.What’s the author’s purpose of mentioning the famous passage in Herman Melville’s novel? A.To describe a hunter’s bravery.B.To introduce the topic of the text.C.To stress the popularity of the novel.D.To offer information about whale hunting. 26.Why was a 25m skeleton of a blue whale named Hope?A.To attract tourists to visit the museum.B.To show the unkindness of whale hunters.C.To motivate humans to live harmoniously with nature.D.To call on people to pay attention to the blue whales’ habitat.27.What does the underlined word “mitigated〞in paragraph 6 probably mean? A.Developed.B.Promoted.C.Reduced.D.Solved.28.What’s the best title of the text?A.The blue whales’ ebackB.The cruelty of industrial whalingC.The importance of protecting whalesD.The sustainable development of the Antarctic area IV.七选五In the face of wildlife loss and habitat destruction, it’s easy to feel powerless to improve. But any action you take, no matter how small, will help restore the world to its natural balance. Here are 4 things you can do to help wildlife.Think twice before landscaping.29 But unless you’re confronting a genuine safety issue, remember that what’s unpleasant to you is sweet home to squirrels, birds, worms and other animals that you might not even know are there. If you must landscape your yard, do so in a way that won’t drive away native wildlife.Keep your cats indoors.It’s ironic that many people who claim to love wildlife have no problem allowing their cats to roam freely outside. Cats are animals, too. 30 Outdoor cats, however, don’t think twice about killing wild birds. In case you’re thinking about “warning〞the birds by attaching a bell to your cat’s collar, don’t bother: Birds have an inborn tendency to flee loud, startling noises, not jingling pieces of metal.Don’t feed any animals but birds.That deer that wanders into your backyard might look hungry and helpless. 31 Giving food to animals accustoms them to human contact, but not all human beings are as warmhearted as you are. Feeding wild birds, on the other hand. is OK as long as you don’t have outdoor cats and you provide a meal in keeping with the bird’s natural diet. 32Clean up litter (not only your own).If you’re concerned about protecting wildlife, you know better than to litter. But it’s not enough to keep your own yard or picnic area clean. You should go the extra mile and pick up cans and bottles left by other people. 33A.Choose nuts and seeds rather than processed bread.B.It seems cruel to keep them shut up inside the house.C.However, if you feed it, you won’t be doing it any favors.D.Most people don’t want wild animals to destroy their roses.E.Smal animals can easily get trapped in or injured by this litter.F.If you have the space, establishing a “mini meadow (草地)〞as a border or boundary area is another effective way to attract birds, as well as beneficial insects.G.If you have just purchased a house or a piece of land, you might be tempted to chop (砍) down unsightly trees.V. 完形填空Paley arrived at Spring Grove Apartment 18 months ago. Jean Lewin, who lived there, fell inbecame part of the building’s “family〞.One night, Lewin found Paley was crying and being a bit 42 . Paley wasn’t being himself and refused to answer Lewin’s call, to which he usually made a quick 43 .Lewin thought the cat wanted to be followed, so she followed his 44 . Paley led her out of the apartment’s yard until they 45 a large tree. That’s when Lewin saw a woman 46 on the snow, unconscious and unresponsive.Lewin had worked on a 47 team for many years and knew exactly what to do. She 48 got a blanket for the woman and asked a neighbor to call 911 while she was tending to her.Fortunately, the cat saved the day and the story had a happy ending. 34.A.releaseB.sellC.feedD.cure 35.A.confidenceB.luckC.troubleD.interest 36.A.HoweverB.OtherwiseC.ThereforeD.Besides37.A.stay away fromB.take care ofC.look up toD.put up with 38.A.cleanB.warmC.stillD.full 39.A.experienceB.conflictsC.confusionD.adventures 40.A.fortableB.busyC.unfamiliarD.strict 41.A.ignoreB.beatC.copyD.pet 42.A.casualB.abnormalC.happyD.calm 43.A.promiseB.contributionC.responseD.wish 44.A.styleB.orderC.exampleD.lead 45.A.plantedB.reachedC.knockedD.destroyed46.A.skatingB.playingC.lyingD.crying 47.A.researchB.rescueC.sportsD.cooking 48.A.quicklyB.randomlyC.curiouslyD.hesitantlyVI. 语法填空Ⅰ. 单词拼写1.illegally【详解】考查副词。
中考语文精选考点专项突破题集 -专题37 人生之路(原卷版)
专题37 人生之路(原卷版)专项训练卷一计划用时:15分钟题量:5题满分:20分实际用时:测试人:得分:【甘肃省天水市2020年中考语文试题】人生没有多余的疼朱成玉①在键盘上敲字的时候,忽然想,如果人生也有一个删除键,我会删除些什么呢?快乐幸福的时光自然舍不得删去,那么删去的就只有那些疼了。
②我想删去手指的疼。
因为一分之差没有考上县城的重点高中,老师和家人都劝我复读一年,我却倔强地选择了离开学校。
每天上午9点30分,是学校上课间操的时间,喇叭里传来熟悉的“广播体操”,一颗心便跟着疼了,再回不去本该属于自己的校园。
于是更加发奋地自学,冬天,写字的手冻成了“馒头”,钻心的疼让我坐卧不宁,直到现在,每到下雨阴天,手指还会隐隐作痛,20多年以前的疼,就像一条甩不掉的蛇,紧紧尾随。
③我想删去肩膀的疼。
在家待业的时候,临时在一个工地做了半年力工,手掌磨出许多大大的血泡,却也不能停下来,因为瓦匠等着我“伺候”呢,炎炎烈日,汗流浃背,苦不堪言。
之后,又去粮库扛麻袋。
黑压压的麻袋落到肩膀上,整个人一下子就蹲到了地上,如此反复,直到后来才慢慢地直起腰来,真不知道那一天是如何熬过来的,那是天底下最漫长的一天,我盼着天快点黑下来,快点,可是太阳,像故意和我作对一般,越发地把它那邪恶的热泼到我身上。
回家之后,掀开衣服,看到肩膀上整个掀开了一层皮,里面嫩嫩的肉呼之欲出!母亲一边给我擦着药膏,一边心疼得直掉眼泪。
④我想删去脚掌的疼。
刚结婚的时候,一贫如洗。
租来的房子又小又破,冬天很冷,墙壁上到处是亮晶晶的霜花。
买不起煤,就去后山打柴。
有一天回来得晚,天已经黑了,妻子担心,拿着手电去山路上寻我。
直至看到我拉着一车柴火,蹒跚归来时,终于忍不住哭出声来。
我告诉她,不敢快走,鞋子马上就要掉了底儿,她找个绳子帮我把鞋子绑上。
脚冻了,又红又肿,害得我现如今走起路来都不是那么笔直。
⑤我想删去牙疼,我想删去头疼,我想删去失恋的疼,我想删去失去亲人的疼,我想删去各种各样的心疼,我想删去……太多太多的疼!⑥我不知道,为何我的人生有如此多的疼,我似乎是疼痛银行的行长。
初中数学专题讲解2专题3《阅读材料题》
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专题三
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(2)∠Q= ∠A.
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理由:
∵△ABC 的内角平分线 BP 与外角平分线 CQ 交于点 Q,∴∠
1
1
2
2
QBC= ∠ABC,∠QCD= ∠ACD.∵∠ACD=∠A+∠ABC,∠QCD=∠QBC+
∠Q,
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1
1
1
2
2
2
2
∴ (∠A+∠ABC)=∠QBC+∠Q= ∠ABC+ ∠A,∴∠Q= ∠A.
定理就是我们非常熟知的一个定理:勾股定理,故答案为勾股定理.
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(3)连接 BD,作 CE⊥BD 于点 E,如图.
∵四边形 ABCD 是圆内接四边形,∴∠BAD+∠
BCD=180°.∵∠BAD=60°,∴∠BCD=120°.∵= ,∴CD=CB,∠CDB=30°.在 Rt△CDE
波格达诺夫·别列斯基的《名画》, 画上那位老师拉 斯是一位自然
科学教授,放弃了大学教席(教师职务)来到农村学校当一名普通老
师,画中,黑板上写着一道式子,如图所示.
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从这道算式可以计算得出答案等于 2,如果仔细研究10,11,12,13,14
这几个数会发现具有一种有趣的特性:102+112+122=132+142,而且
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专题三
专题三 阅读材料题
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专题三
【专题解读】阅读材料题是 西中考每年的必考内容,常以数学
文化知识、数学在自然与社会中的应用及数学发展史的有关材
料为背景进行命制,题型以解答题为主.常见的考查方式为给一段
专题02整式(共37题)(第01期)【原卷版】
专题02整式(共37题)一、单选题1.(2022·云南·中考真题)下列运算正确的是()A.2+3=5B.30=0C.(―2a)3=―8a3D.a6÷a3=a2 2.(2022·浙江金华·中考真题)计算a3⋅a2的结果是()A.a B.a6C.6a D.a5 3.(2022·安徽·中考真题)下列各式中,计算结果等于a9的是()A.a3+a6B.a3⋅a6C.a10―a D.a18÷a2 4.(2022·四川成都·中考真题)下列计算正确的是()A.m+m=m2B.2(m―n)=2m―nC.(m+2n)2=m2+4n2D.(m+3)(m―3)=m2―9 5.(2022·四川德阳·中考真题)下列计算正确的是()A.(a―b)2=a2―b2B.(―1)2=1C.a÷a⋅1a =a D.―12ab23=―16a3b66.(2022·四川遂宁·中考真题)下列计算中正确的是()A.a3⋅a3=a9B.(―2a)3=―8a3C.a10÷(―a2)3=a4D.(―a+2)(―a―2)=a2+47.(2022·四川遂宁·中考真题)已知m为方程x2+3x―2022=0的根,那么m3+2m2―2025m+2022的值为()A.―2022B.0C.2022D.40448.(2022·重庆·中考真题)把菱形按照如图所示的规律拼图案,其中第①个图案中有1个菱形,第②个图案中有3个菱形,第③个图案中有5个菱形,…,按此规律排列下去,则第⑥个图案中菱形的个数为()A.15B.13C.11D.99.(2022·云南·中考真题)按一定规律排列的单项式:x,3x²,5x³,7x4,9x5,……,第n个单项式是()A.(2n-1)x n B.(2n+1)x n C.(n-1)x n D.(n+1)x n10.(2022·重庆·中考真题)对多项式x―y―z―m―n任意加括号后仍然只含减法运算并将所得式子化简,称之为“加算操作”,例如:(x―y)―(z―m―n)=x―y―z+m+n,x―y―(z―m)―n=x―y―z+m ―n,…,给出下列说法:①至少存在一种“加算操作”,使其结果与原多项式相等;②不存在任何“加算操作”,使其结果与原多项式之和为0;③所有的“加算操作”共有8种不同的结果.以上说法中正确的个数为()A.0B.1C.2D.311.(2022·山东滨州·中考真题)下列计算结果,正确的是()A.(a2)3=a5B.8=32C.38=2D.cos30°=1212.(2022·四川南充·中考真题)下列计算结果正确的是()A.5a―3a=2B.6a÷2a=3a C.a6÷a3=a2D.(2a2b3)3=8a6b9 13.(2022·四川泸州·中考真题)下列运算正确的是()A.a2⋅a3=a6B.3a―2a=1C.(―2a2)3=―8a6D.a6÷a2=a314.(2022·浙江丽水·中考真题)计算―a2⋅a的正确结果是()A.―a2B.a C.―a3D.a315.(2022·四川南充·中考真题)下列计算结果为5的是()A.―(+5)B.+(―5)C.―(―5)D.―|―5|16.(2022·四川自贡·中考真题)下列运算正确的是()A.(―1)2=―2B=1C.a6÷a3=a2D.=017.(2022·重庆·中考真题)用正方形按如图所示的规律拼图案,其中第①个图案中有5个正方形,第②个图案中有9个正方形,第③个图案中有13个正方形,第④个图案中有17个正方形,此规律排列下去,则第⑨个图案中正方形的个数为()A.32B.34C.37D.41二、填空题18.(2022·浙江金华·中考真题)因式分解:x2―9=______.19.(2022·四川德阳·中考真题)分解因式:ax2―a=______.20.(2022·江苏连云港·中考真题)计算:2a+3a=______.21.(2022·山东滨州·中考真题)若m+n=10,mn=5,则m2+n2的值为_______.22.(2022·山东泰安·中考真题)观察下列图形规律,当图形中的“○”的个数和“.”个数差为2022时,n的值为____________.23.(2022·江苏连云港·中考真题)若关于x的一元二次方程mx2+nx―1=0(m≠0)的一个解是x=1,则m +n的值是___.24.(2022·四川德阳·中考真题)古希腊的毕达哥拉斯学派对整数进行了深入的研究,尤其注意形与数的关系,“多边形数”也称为“形数”,就是形与数的结合物.用点排成的图形如下:其中:图①的点数叫做三角形数,从上至下第一个三角形数是1,第二个三角形数是1+2=3,第三个三角形数是1+2+3=6,……图②的点数叫做正方形数,从上至下第一个正方形数是1,第二个正方形数是1+3=4,第三个正方形数是1+3+5=9,……由此类推,图④中第五个正六边形数是______.25.(2022·四川遂宁·中考真题)“勾股树”是以正方形一边为斜边向外作直角三角形,再以该直角三角形的两直角边分别向外作正方形,重复这一过程所画出来的图形,因为重复数次后的形状好似一棵树而得名.假设如图分别是第一代勾股树、第二代勾股树、第三代勾股树,按照勾股树的作图原理作图,则第六代勾股树中正方形的个数为______.26.(2022·浙江丽水·中考真题)如图,标号为①,②,③,④的矩形不重叠地围成矩形PQMN,已知①和②能够重合,③和④能够重合,这四个矩形的面积都是5.AE=a,DE=b,且a>b.(1)若a,b是整数,则PQ的长是___________;的值是___________.(2)若代数式a2―2ab―b2的值为零,则S四边形ABCDS矩形PQMN三、解答题27.(2022·浙江丽水·中考真题)先化简,再求值:(1+x)(1―x)+x(x+2),其中x=1.228.(2022·重庆·中考真题)计算:(1)(x+2)2+x(x―4);.1÷a2―b22b29.(2022·四川南充·中考真题)先化简,再求值:(x+2)(3x―2)―2x(x+2),其中x=3―1.30.(2022·山东泰安·中考真题)(1)若单项式x m―n y14与单项式―1x3y3m―8n是一多项式中的同类项,求m、2n的值;,其中x=2―1.(2÷1x2―131.(2022·重庆·中考真题)计算:(1)(x+y)(x―y)+y(y―2);(2)1÷m2―4m+4.m2―432.(2022·浙江金华·中考真题)如图1,将长为2a+3,宽为2a的矩形分割成四个全等的直角三角形,拼成“赵爽弦图”(如图2),得到大小两个正方形.(1)用关于a的代数式表示图2中小正方形的边长.(2)当a=3时,该小正方形的面积是多少?33.(2022·安徽·中考真题)某地区2020年进出口总额为520亿元.2021年进出口总额比2020年有所增加,其中进口额增加了25%,出口额增加了30%.注:进出口总额=进口额+出口额.(1)设2020年进口额为x亿元,出口额为y亿元,请用含x,y的代数式填表:年份进口额/亿元出口额/亿元进出口总额/亿元2020x y5202021 1.25x 1.3y(2)已知2021年进出口总额比2020年增加了140亿元,求2021年进口额和出口额度分别是多少亿元?34.(2022·安徽·中考真题)观察以下等式:第1个等式:(2×1+1)2=(2×2+1)2―(2×2)2,第2个等式:(2×2+1)2=(3×4+1)2―(3×4)2,第3个等式:(2×3+1)2=(4×6+1)2―(4×6)2,第4个等式:(2×4+1)2=(5×8+1)2―(5×8)2,……按照以上规律.解决下列问题:(1)写出第5个等式:________;(2)写出你猜想的第n个等式(用含n的式子表示),并证明.35.(2022·四川凉山·中考真题)阅读材料:材料1:若关于x的一元二次方程ax2+bx+c=0(a≠0)的两个根为x1,x2,则x1+x2=―ba ,x1x2=ca材料2:已知一元二次方程x2-x-1=0的两个实数根分别为m,n,求m2n+mn2的值.解:∵一元二次方程x2-x-1=0的两个实数根分别为m,n,∴m+n=1,mn=-1,则m2n+mn2=mn(m+n)=-1×1=-1根据上述材料,结合你所学的知识,完成下列问题:(1)材料理解:一元二次方程2x2-3x-1=0的两个根为x1,x2,则x1+x2=;x1x2=.(2)类比应用:已知一元二次方程2x2-3x-1=0的两根分别为m、n,求nm +mn的值.(3)思维拓展:已知实数s、t满足2s2-3s-1=0,2t2-3t-1=0,且s≠t,求1s ―1t的值.36.(2022·重庆·中考真题)若一个四位数M的个位数字与十位数字的平方和恰好是M去掉个位与十位数字后得到的两位数,则这个四位数M为“勾股和数”.例如:M=2543,∵32+42=25,∴2543是“勾股和数”;又如:M=4325,∵52+22=29,29≠43,∴4325不是“勾股和数”.(1)判断2022,5055是否是“”,并说明理由;(2)一个“勾股和数”M的千位数字为a,百位数字为b,十位数字为c,个位数字为d,记G(M)=c+d9,P(M)=|10(a―c)+(b―d)|3.当G(M),P(M)均是整数时,求出所有满足条件的M.37.(2022·重庆·中考真题)对于一个各数位上的数字均不为0的三位自然数N,若N能被它的各数位上的数字之和m整除,则称N是m的“和倍数”.例如:∵247÷(2+4+7)=247÷13=19,∴247是13的“和倍数”.又如:∵214÷(2+1+4)=214÷7=30⋯⋯4,∴214不是“和倍数”.(1)判断357,441是否是“和倍数”?说明理由;(2)三位数A是12的“和倍数”,a,b,c分别是数A其中一个数位上的数字,且a>b>c.在a,b,c中任选两个组成两位数,其中最大的两位数记为F(A),最小的两位数记为G(A),若F(A)+G(A)16为整数,求出满足条件的所有数A.。
专题02阅读理解故事类(解析版)
专题02阅读理解故事类(分析版)2019 年高考英语母题题源系列专题 02阅读理解(故事类)【母根源一】【2019·全国 I 卷, B】For Canaan Elementary’ s second grade in Patchogue,.,Ntoday.Y is speech day ,and right now it’ s Chris Palaez ’ s turn. The-year8-old is the joker of the class. With shining dark eyes, he seems like the of kid who wouldenjoy public speaking.But he ’ s, nervous“I. ’ m here to tell you today why you should” Chris⋯shouldtrips on⋯the“ -ld,”a.pronunciation difficulty for many non-native English speakers. His teacher ,Thomas Whaley ,is next to him,whispering support. “ ⋯ Vote for ⋯ me”⋯Except for some stumbles, Chris is doing amazingly well. When hebrings his speech to a nice conclusion ,Whaley invites the rest of the class to praise him.A son of immigrants, Chris stared learning English a little over three years ago. Whaley recalls(回忆起)how atthe beginning of the year , when called upon to read, Chris would excuse himself to go to the bathroom.Learning English as a second language can be a painful experience. What you need is a great teacher who letsyou make mistakes.“ It takes a lot for any student,” Whaley explains,“ especially for a student who is learningEnglish as their new language , to feel confident enough to say ,‘ I don’ t know,but I want to know.’”Whaley got the idea of this second-grade presidential campaign project when he asked the children one day toraise their hands if they thought they could never be a president. The answer broke his heart. Whaley says the projectis about more than just learning to read and speak in public. He wants these kids to learn to boast( 炫耀 )aboutthemselves.“ Boasting about yourself,and your best qualities,” Whaley,“is saysvery difficult for a child who came into the classroom not feeling confident.”24. What made Chris nervous ?A. Telling a story.B. Making a speech.C. Taking a test.D. Answering a question.25. What does the underlined word“ stumbles” in paragraph 2 refer to?A. Improper pauses.B. Bad manners.C. Spelling mistakes.D. Silly jokes.26. We can infer that the purpose of Whaley’ s project is to _________.专题02阅读理解故事类(分析版)A. help students see their own strengthsB. assess students’ public speaking skillsC. prepare students for their future jobsD. inspire students’ love for politics27. Which of the following best describes Whaley as a teacher?A. Humorous.B. Ambitious.C. Caring.D. Demanding.【语篇解读】本文属于记述文,叙述Thomas Whaley 为了帮助学生学英语以及建立信心特意睁开了一个演授课程。
2021年高考政治一轮复习专题37唯物辩证法的发展观(押题专练)(含解析)
专题37 唯物辩证法的开展观1.据国家统计局2021年的数据显示:不管从生产角度,还是从消费角度,中国经济稳中有进,向好势头持续开展。
这一结论表达的哲学道理是( )A.事物开展的方向是前进的、上升的B.事物之间的相互联系构成事物的开展C.事物开展的道路是曲折的、迂回的D.主要矛盾决定事物的开展进程和方向【答案】A【解析】不管从生产角度,还是从消费角度,中国经济稳中有进,向好势头持续开展,这说明事物开展的方向是前进的、上升的,A符合题意;其他选项材料没有表达,排除。
2.以下各项能说明开展普遍性原理的是( )①青藏高原海陆变迁②芳林新叶催陈叶,流水前波让后波③世界就是一个轮回,始于何处,回到何处④自古及今,法无不改,势无不积,事例无不变迁,风气无不移易A.①③B.②③C.②④D.①④【答案】C3.2021年我国经济工作总基调继续确定为稳中求进,经济增长预期目标增长6.5%左右,这一安排符合我国经济已由高速增长阶段转向高质量开展阶段的实际。
我国从片面追求经济开展速度,到现在注重经济增长的高质量,这种认识的变化说明( )A.自然界是开展的B.人类社会是开展的C.人的认识是变化开展的D.人的认识可以跨越式开展【答案】C【解析】我国从片面追求经济开展速度到经济开展更加注重提高质量和效益,说明人的认识是不断开展的,应选C。
A、B、D不符合题意。
4.在佛教文学作品?百句譬喻经?中有一那么“愚人吃盐〞的故事,讲的是从前有个愚人到别人家做客,吃菜嫌淡而无味,主人知道后,给他加了一点盐,他吃了后便觉得味道很美,而后他想,味道好是因为有盐,于是他就大吃起盐来,其结果是又苦又涩。
故事中的愚人之愚主要表达在他没有意识到( )①事物的量变必然会引起质变②从量变到质变的过程就是开展③事物的量变与质变之间有界限④矛盾双方一定条件下相互贯穿A.①②B.①④C.②③D.③④【答案】D5.甲亢患者长期得不到合理治疗,会导致消瘦,并引发甲亢性心脏病,严重时甚至导致死亡。
2021年九年级数学重庆中考23题阅读理解材料题专题(2)(无答案)
2021重庆年中考23阅读理解题材料题专题(2)1(巴蜀2021级初三上第一次月考)对于各位数字都不为0 的两位数m 和三位数n ,将m 中的任意一个数字作为一个新的两位数的十位数字,将n 的任意一个数字作为新的两位数的个位数字,按照这个方式产生的所有新的两位数的和几位F (m,n ),例如:F (12,345)=13+14+15+23+24+25=114.(1)填空:F (13,579)=(2)求证:当n 能被3整除,F (m ,n )一定能被6整除;2(重庆两江育才2021级九上第一次月考)对任意一个四位数n ,将这个四位数n 千位数字与十位数字对调,百位上数字与个位上数字对调后可以得到新的四位数m ,记F (n )=99n m -,例如n=1423,对调千位数字与十位数字及百位上数字与个位数字得到2314,所以F (n )=14232314=-999-,如果四位数n 满足千位数字与百位数字的和等于十位数字与个位数字的和,则称这个数为“平衡数”,例如:1423,因为1+4=2+3,多以1423是一个平衡数.(1)请计算F (8062),并证明:对于任意一个四位数n ,都有F (n )为整数;(2)若一个“平衡数”N 的十位数比百位数字的2倍少1,且这个“平衡数”能被同时被3和11整除,求F (N )的最小值。
3(重庆育才2021级九上第二次定时训练)中国古贤常说万物皆自然,而古希腊学者说万物皆数,小学我们就接触了自然数,在数得学习过程中,我们会对其中一些具有某些特性的自然数进行研究,比如奇数、偶数、质数、合数等,今天我们来研究另外一种特殊的自然数——“欢喜数”定义:对于一个各位不为0的自然数,如果它正好等于各个数为数字的和的整数倍,我们就说这个自然数是一个“欢喜数”,例如:24是一个欢喜数,因为24=4×(2+4);125不是一个“欢喜数”因为1+2+5=8,125不是8的整数倍.(1)判断28和135是否是“欢喜数”?请说明理由;(2)有一类“欢喜数”,它等于各位数数字之和的4倍,求所有这种“欢喜数”。
部编版语文6年级下册第6单元专题02阅读理解及答案
【单元专题卷】部编版语文6年级下册第6单元专题02阅读理解一、现代文阅读阅读短文,完成练习。
我的老师最使我难忘的是我小学时候的女教师蔡芸芝先生。
现在回想起来,她那时有十八九岁。
右嘴角有榆钱大小一块黑痣。
在我的记忆里,她是一个温柔、美丽的人。
她从来不打骂我们。
仅仅有一次,她的教鞭好像要落下来,我用石板一迎,教鞭轻轻地敲在石板边上,大伙笑了,她也笑了。
我用儿童的狡猾的眼光察觉,她爱我们,并没有存心要打的意思。
孩子们是多么善于________(A.发现B.观察C.观测D.察觉)这一点啊。
在课外的时候,她教我们跳舞,我现在还记得她把我扮成女孩子表演跳舞的情景。
在假日里,她把我们带到她的家里和女朋友的家里,在她的女朋友的园子里,她还让我们观察蜜蜂,也是在那时候,我认识了蜂王,并且平生第一次吃了蜂蜜。
她爱诗,并且爱用歌唱的音调教我们读诗。
直到现在我还记得她读诗的音调,还能背诵她教我们的诗:圆天盖着大海,黑水托着孤舟,远看不见山,那天边只有云头,也看不见树,那水上只有海鸥……今天想来,她对我接近文学和爱好文学,是有着多么有益的影响!1.请在文中横线上填入词语的正确序号。
2.用“____”画出短文中点题的句子。
3.“在我的记忆里,她是一个温柔、美丽的人。
”这里“温柔”侧重写________特点,“美丽”侧重写________特点。
4.下列对文章各句的理解中,不恰当的一项是()A.“她爱我们,并没有存心要打的意思。
孩子们是多么善于观察这一点啊。
”(抒发了“我”对老师的理解和热爱之情。
)B.“今天想来,她对我接近文学和爱好文学,是有着多么有益的影响!”(句中“接近”和“爱好”的位置可互换,换后也能很好地抒发“我”对老师的感激之情。
)C.“仅仅有一次,她的教鞭好像要落下来”(“好像”的意思是只不过做做样子,不是真要打。
)阅读理解。
开山岛位于我国黄海前哨,面积仅有两个足球场大小,战略位置十分重要。
1986年7月的一天,王继才受老政委的委托上岛了。
《高考真题》2019年高考英语母题题源系列专题02 阅读理解故事类(原卷版)
专题02 阅读理解(故事类)【母题来源一】【2019·全国I卷,B】For Canaan Elementary’s second grade in Patchogue, N.Y.,today is speech day ,and right now it’s Chris Palaez’s turn. The 8-year-old is the joker of the class. With shining dark eyes, he seems like the of kid who would enjoy public speaking.But he’s, nervous.“I’m here to tell you today why you should … should…”Chris trips on the“-ld,”a. pronunciation difficulty for many non-native English speakers. His teacher ,Thomas Whaley ,is next to him, whispering support.“…Vote for …me …”Except for some stumbles, Chris is doing amazingly well. When he brings his speech to a nice conclusion ,Whaley invites the rest of the class to praise him.A son of immigrants, Chris stared learning English a little over three years ago. Whaley recalls(回想起)how at the beginning of the year,when called upon to read,Chris would excuse himself to go to the bathroom.Learning English as a second language can be a painful experience. What you need is a great teacher who lets you make mistakes. “I t takes a lot for any student,” Whaley explains,“especially for a student who is learning English as their new language,to feel confident enough to say,‘I don’t know,but I want to know.’”Whaley got the idea of this second-grade presidential campaign project when he asked the children one day to raise their hands if they thought they could never be a president. The answer broke his heart. Whaley says the project is about more than just learning to read and speak in public. He wants these kids to learn to boast(夸耀)about themselves.“Boasting about yourself,and your best qualities,” Whaley says,“is very difficult for a child who came into the classroom not feeling confident.”24. What made Chris nervous?A. Telling a story.B. Making a speech.C. Taking a test.D. Answering a question.25. What does the underlined word “stumbles” in paragraph 2 refer to?A. Improper pauses.B. Bad manners.C. Spelling mistakes.D. Silly jokes.26. We can infer that the purpose of Whaley’s project is to _________.A. help students see their own strengthsB. assess students’ public speaking skillsC. prepare students for their future jobsD. inspire students’ love for politics27. Which of the following best describes Whaley as a teacher?A. Humorous.B. Ambitious.C. Caring.D. Demanding.【母题来源二】【2019·全国II卷,B】“You can use me as a last resort(选择), and if nobody else volunteers,then I will do it.” This was an actual reply from a parent after I put out a request for volunteers for my kids lacrosse(长曲棍球)club.I guess that there's probably some demanding work schedule, or social anxiety around stepping up to help for an unknown sport. She may just need a little persuading. So I try again and tug at the heartstrings. I mention the single parent with four kids running the show and I talk about the dad coaching a team that his kids aren’t even on … At this point the unwilling parent speaks up,“Alright. Yes, I’ll do it.”I’m secretly relieved because I know there’s real power in sharing volunteer responsibilities among many. The unwilling parent organizes the meal schedule, sends out emails, and collects money for end-of-season gifts. Somewhere along the way, the same parent ends up becoming an invaluable member of the team. The coach is able to focus on the kids while the other parents are relieved to be off the hook for another season. Handing out sliced oranges to bloodthirsty kids can be as exciting as watching your own kid score a goal.Still, most of us volunteers breathe a sigh of relief when the season comes to a close. That relief is coupled with a deep understanding of why the same people keep coming back for more: Connecting to the community(社区)as you freely give your time, money, skills, or services provides a real joy. Volunteering just feels so good.In that sense, I’m pretty sure volunteering is more of a selfish act than I’d freely like to admit. However, if others benefit in the process, and I get some reward too, does it really matter where my motivation lies?24. What can we infer about the parent from her reply in paragraph l?A. She knows little about the club.B. She isn't good at sports.C. She just doesn't want to volunteer.D. She's unable to meet her schedule.25. What does the underlined phrase“tug at the heartstrings”in paragraph 2 mean ?A. Encourage team work.B. Appeal to feeling.C. Promote good deeds.D. Provide advice.26. What can we learn about the parent from paragraph 3?A. She gets interested in lacrosse.B. She is proud of her kids.C. She’ll work for another season.D. She becomes a good helper.27. Why does the author like doing volunteer work?A. It gives her a sense of duty.B. It makes her very happy.C. It enables her to work hard.D. It brings her material rewards.【母题来源三】【2019·北京卷,B】Alice Moore is a teenager entrepreneur(创业者), who in May 2015 set up her business AilieCandy. By the time she was 13,her company was worth millions of dollars with the invention of a super-sweet treat that could save kids' teeth,instead of destroying them.It all began when Moore visited a bank with her dad. On the outing, she was offered acandy bar. However, her dad reminded her that sugary treats were bad for her teeth. ButMoore was sick of missing out on candies. So she desired to get round the warning, "Whycan't I make a healthy candy that's good for my teeth so that my parents can't say no to it?"With that in mind, Moore asked her dad if she could start her own candy company. Herecommended that she do some research and talk to dentists about what a healthier candywould contain.With her dad's permission, she spent the next two years researching online and conducting trials to get a recipe that was both tasty and tooth-friendly. She also approached dentists to learn more about teeth cleaning. Consequently, she succeeded in making a kind of candy only using natural sweeteners, which can reduce oral bacteria.Moore then used her savings to get her business of the ground. Afterwards, she and her father secured their firstbusiness meeting with a supermarket owner, who finally agreed to sell Moore's product-Cancandy.As CanCandy's success grows, so does Moore's credibility as a young entrepreneur. Moore is enthusiastic about the candy she created, and she's also positive about what the future might bring. She hopes that every kid can have a clean mouth and a broad smile.Meanwhile, with her parents' help, Moore is generally able to live a normal teenage life. Although she founded her company early on in life, she wasn't driven primarily by profit. Moore wants to use her unique talent to help others find their smiles. She donates 10% of AilicCandy's profits to Big Smiles. With her talent and determination, it appears that the sky could be the limit for Alice Moore.34. How did Moore react to her dad's warning?A. She argued with him.B. She tried to find a way out.C. She paid no attention.D. She chose to consult dentists.35. What is special about CanCandy?A. It is beneficial to dental health.B. It is free of sweeteners.C. It is sweeter than other candies.D. It is produced to a dentists' recipe.36. What does Moore expect from her business?A. To earn more money.B. To help others find smiles.C. To make herself stand out.D. To beat other candy companies.37. What can we learn from Alice Moore's story?A. Fame is a great thirst of the young.B. A youth is to be regarded with respect.C. Positive thinking and action result in success.D. Success means getting personal desires satisfied【命题意图】阅读理解从能力的角度来讲,考查学生运用英语的能力,具体地说,就是通过阅读有关文章提取有用信息的能力。
高考现代文阅读微专题:纯文学与纪实文学++课件37张
小说对于人物形象的塑造都是很讲究的,如文本一运用大量的细节描写来塑造老胡的 形象,主要以语言描写为主,同时有动作神态描写;文本二也有人物的语言、动作和神态 描写,但是相对简略,没有文本一写得那么生动形象。这里要注意文本二下面的注释,
底层+高阶
☆ 高阶思维
【答案关键词:人物描写的细节与简笔】
分析概括能力高阶思维训练
微专题2:
现代文阅读第9题(主观概括题)
第二课:纯文学与纪实文学作品比较阅读
文学类文本阅读主观概括题
【课前预习 ·题目讲评 】
典型例题· 课前预习
【2022·全国甲卷《支队政委》】 文学类文本阅读
☆☆【概括能力高阶训练】9.这两个内容相近的文本文体不同,因而 艺术表现也有差异。请比较并简要分析分析(6分)
小说VS 新闻消息
真实性 情节 主题
人物
艺术 效果
虚构 线索安排与 更丰富 丰满立体与 趣味性
与真实 平铺直叙
简笔
更浓
底层+高阶
☆ 参考答案
①情节安排更精巧。新闻消息平铺直叙;小说以信封为线索,连接刘兴根、刘敬根这 两个儿 子情深义重的故事,设计巧妙。②人物刻画更立体。新闻消息以报道新闻事实为主 ,简明扼要;小说以刻画人物为中心,塑造了一个有情有义的人物形象。③主题表达更丰 富。新闻消息重在表现廖良开的重诺重情;小说重在赞美军人重情重义、不 计名利的美好 品质和高尚情操。④阅读趣味更浓厚。新闻消息客观报道;小说的铺垫、比喻等手法,社 会背景的融入,人物对话的描写,使小说引人入胜。(评分细则:答对任意 1 点给 2 分, 满分 6 分。如有其他答案,只要言之成理,可酌情给分。)
文学类文本阅读主观概括题
专题37《邹忌讽齐王纳谏》(真题专练)(原卷版)-2024年中考语文课内39篇文言文阅读
专题37:《邹忌讽齐王纳谏》(原卷版)真题专练【12023年广东省中考语文真题】阅读下面的文字,完成下面小题。
【甲】于是入朝见威王,曰:“臣诚知不如徐公美。
臣之妻私.臣,臣之妾畏臣,臣之客欲有求于臣,皆以美于徐公。
今齐地方千里,百二十城,宫妇左右莫不私王,朝廷之臣莫不畏王,四境之内莫不有求于王:由此观之,王之蔽甚矣。
”王曰:“善。
”乃下令:“群臣吏民能面刺寡人之过者,受上赏;上书谏寡人者,受中赏;能谤讥于市朝,闻.寡人之耳者,受下赏。
”令初下,群臣进谏,门庭若市;数月之后,时时而间.进;期年之后,虽欲言,无可进者。
燕、赵、韩、魏闻之,皆朝于齐。
此所谓战胜于朝廷。
(选自《战国策·齐策一》)10. 解释文中加点词语的意思。
(1)臣之妻私.臣(2)闻.寡人之耳者(3)时时而间.进11. 把文中画线的句子翻译成现代汉语。
(1)臣诚知不如徐公美。
(2)期年之后,虽欲言,无可进者。
【乙】贞观中,太子承乾数.亏礼度,侈纵日甚。
太子左庶子于志宁撰《谏苑》二十卷讽之。
是时太子右庶子孔颖达每犯颜进谏,承乾乳母遂安夫人谓.颖达曰:“太子长成,何宜屡得面.折?”对曰:“蒙国.厚恩,死无所恨。
”谏诤愈切。
承乾令撰《孝经义疏》,颖达又因文见意,愈广规谏之道。
太宗并嘉纳之二人各赐帛五百匹黄金一斤以励承乾之意。
(选自《贞观政要》)12. 下列各组句子中,加点词语意思相同的一项是()A. 太子承乾数.亏礼度/珠可历历数.也B. 承乾乳母遂安夫人谓.颖达曰/予谓.菊,花之隐逸者也C. 何宜屡得面.折/群臣吏民能面.刺寡人之过者D. 蒙国.厚恩/则有去国.怀乡13. 请用“/”给文中画线的句子断句。
太宗并嘉纳之二人各赐帛五百匹黄金一斤以励承乾之意14. 根据【甲】【乙】两篇选文,把下面对话补充完整。
【22023年江苏省镇江市中考语文真题】阅读下面文言文(选段),完成下面小题。
【甲】令初下,群臣进谏,门庭若市;数月之后,时时而间进;期年之后,虽欲言,无可进者。
专题37有理数章末测试卷(拔尖卷)(举一反三)(解析版)
第2章 有理数章末测试卷(拔尖卷)一.选择题(共10小题,满分30分,每小题3分)1.(3分)(2021春•花山区校级月考)2020年我国国内生产总值(GDP )首次超过百万亿,达到101.6万亿元人民币,数据101.6万亿用科学记数法表示为( ) A .101.6×1012B .1.016×1013C .1.016×1014D .1.02×1014【解题思路】科学记数法的表示形式为a ×10n 的形式,其中1≤|a |<10,n 为整数.确定n 的值时,要看把原数变成a 时,小数点移动了多少位,n 的绝对值与小数点移动的位数相同.当原数绝对值≥10时,n 是正数;当原数的绝对值<1时,n 是负数. 【解答过程】解:数据101.6万亿用科学记数法表示为101.6×1012=1.016×1014. 故选:C .2.(3分)(2020秋•鼓楼区校级月考)991819×15=(100−119)×15=1500−1519,这个运算应用了( ) A .加法交换律B .乘法结合律C .乘法交换律、乘法结合律D .乘法分配律【解题思路】根据有理数的乘法,即可解答. 【解答过程】解:991819×15=(100−119)×15=1500−1519,这个运算应用了乘法的分配律, 故选:D .3.(3分)(2021•南京)北京与莫斯科的时差为5小时,例如,北京时间13:00,同一时刻的莫斯科时间是8:00.小丽和小红分别在北京和莫斯科,她们相约在各自当地时间9:00~17:00之间选择一个时刻开始通话,这个时刻可以是北京时间( ) A .10:00B .12:00C .15:00D .18:00【解题思路】根据北京时间比莫斯科时间晚5小时解答即可. 【解答过程】解:由题意得,北京时间比莫斯科时间晚5小时,当莫斯科时间为9:00,则北京时间为14:00;当北京时间为17:00,则莫斯科时间为12:00;所以这个时刻可以是14:00到17:00之间, 所以这个时刻可以是北京时间15:00. 故选:C .4.(3分)(2020秋•河东区期末)联系(﹣2)2、22、(﹣2)3、23,这类具体数的乘方,当a<0时,下列各式正确的个数有()个.①a2>0;②a2=(﹣a)2;③a3>0;④a3=﹣a3.A.1B.2C.3D.4【解题思路】依据有理数的乘法法则进行判断即可.【解答过程】解:①当a<0时,①成立,②成立;③当a≤0时,不成立,④当a>0或a<0时,不成立,故正确的只有①②.故选:B.5.(3分)(2020秋•叙州区期末)已知|a+2|与(b﹣4)2互为相反数,则a b的结果是()A.﹣8B.8C.﹣16D.16【解题思路】先根据互为相反数的和为0,再根据非负数的性质列出算式,求出a、b的值,计算即可.【解答过程】解:∵|a+2|+(b﹣4)2=0,∴a+2=0,b﹣4=0,∴a=﹣2,b=4,∴a b=(﹣2)4=16.故选:D.6.(3分)(2020秋•陇县期末)已知|a|=2,b2=25,且ab>0,则a﹣b的值为()A.7B.﹣3C.3D.3或﹣3【解题思路】根据绝对值,乘方的意义求出a、b的值,再代入计算即可.【解答过程】解:因为|a|=2,所以a=±2,因为b2=25,所以b=±5,又因为ab>0,所以a、b同号,所以a=2,b=5,或a=﹣2,b=﹣5,当a=2,b=5时,a﹣b=2﹣5=﹣3,当a=﹣2,b=﹣5时,a﹣b=﹣2﹣(﹣5)=3,因此a﹣b的值为3或﹣3,故选:D.7.(3分)(2020秋•南京期末)有理数a在数轴上的位置如图所示,下列各数中,在0到1之间的是()①﹣a﹣1,②|a+1|,③2﹣|a|,④12|a|.A.②③④B.①③④C.①②③D.①②③④【解题思路】根据数轴得出﹣2<a <﹣1,再逐个判断即可. 【解答过程】解:①根据数轴可以知道:﹣2<a <﹣1, ∴1<﹣a <2,∴0<﹣a ﹣1<1,符合题意; ②∵﹣2<a <﹣1, ∴﹣1<a +1<0,∴0<|a +1|<1,符合题意; ③∵﹣2<a <﹣1, ∴1<|a |<2, ∴﹣2<﹣|a |<﹣1, ∴0<2﹣|a |<1,符合题意; ④∵1<|a |<2,∴12<12|a |<1,符合题意.故选:D .8.(3分)(2020秋•恩施市期末)如图所示,数轴上标出四个点,且有一点是原点,已知每相邻的两点相距一个单位,点A 、B 、C 、D 对应的数为a ,b ,c ,d ,且d ﹣2a =4,则数轴的原点应是( )A .点AB .点BC .点CD .点D【解题思路】此题用排除法进行分析:分别设原点是点A 或B 或C 或D .【解答过程】解:若原点是A ,则a =0,d =3,此时d ﹣2a =3,和已知不符,排除; 若原点是点B ,则a =﹣1,d =2,此时d ﹣2a =4,和已知相符,正确; 若原点是C ,则a =﹣2,d =1,此时d ﹣2a =5,和已知不符,排除; 若原点是D ,则a =﹣3,d =0,此时d ﹣2a =6,和已知不符,排除; 故数轴的原点应是B 点. 故选:B .9.(3分)(2021•蓬安县模拟)设[m )表示大于m 的最小整数,如[5.5)=6,[﹣1.2)=﹣1,则下列结论中正确的是( ) A .[2)﹣2=0B .若[m )﹣m =0.5,则m =0.5C .[m )﹣m 的最大值是1D .[m )﹣m 的最小值是0【解题思路】根据题意[m )表示大于m 的最小整数,结合各项进行判断即可得出答案. 【解答过程】解:A 、[2)﹣2=3﹣2=1,故本选项不合题意; B 、若[m )﹣m =0.5,则m 不一定等于0.5,故本选项不合题意;C、[m)﹣m的最大值是1,故本项符合题意;D、[m)﹣m>0,但是取不到0,故本选项不合题意;故选:C.10.(3分)(2021春•通州区期末)数轴上某一个点表示的数为a,比a小2的数用b表示,那么|a|+|b|的最小值为()A.0B.1C.2D.3【解题思路】理解绝对值的定义,如|a﹣2|表示数轴上点a到2的距离;|a|=|a﹣0|表示a 到原点的距离;【解答过程】解:∵比a小2的数用b表示,∴b=a﹣2,∴|a|+|b|=|a﹣0|+|a﹣2|,那么|a|+|b|的最小值就是在数轴上找一点a到原点和到2的距离最小,显然这个点就是在0与2之间,当a在区间0与2之间时,|a﹣0|+|a﹣2|=|2﹣0|=2为最小值,∴|a|+|b|的最小值为2,故选:C.二.填空题(共6小题,满分18分,每小题3分)11.(3分)(2020秋•镇平县月考)规定每天归还图书为正,借出图书为负,例如(﹣3,+1)表示借出3本,归还1本.阅览室某一书架上原有图书20本,经过两天借阅情况如下:(﹣5,+3),(﹣1,+2),则该书架上现有图书19本.【解题思路】(﹣3,+1)表示借出3本归还1本,求出20与借出归还的和就是该书架上现有图书的本数,【解答过程】解:20﹣5+3﹣1+2=19(本)故答案为:19本.12.(3分)(2021春•溧阳市期末)若a<b<0,则1、1﹣a2、1﹣b三个数之间的大小关系为1﹣a2<1<1﹣b(用“<”连接).【解题思路】用特殊值法比较大小,不妨设a=﹣2,b=﹣1,分别求出1﹣a2和1﹣b的值即可得出大小关系.【解答过程】解:不妨设a=﹣2,b=﹣1,则1﹣a2=1﹣(﹣2)2=1﹣4=﹣3,1﹣b=1﹣(﹣1)=2,∴1﹣a2<1<1﹣b,故答案为:1﹣a2<1<1﹣b.13.(3分)(2020秋•沙县期末)如图,在一条可以折叠的数轴上,A和B表示的数分别是﹣10和4,以点C为折点,将此数轴向右对折,若点A在点B的右边,且AB=2,则C点表示的数是﹣2.【解题思路】设点C表示的数为x,则AC=x﹣(﹣10)=x+10,BC=4﹣x,由于以点C为折点,将此数轴向右对折,若点A在点B的右边,且AB=2,可得AC﹣BC=2,即:x+10﹣(4﹣x)=2,解方程结论可得.【解答过程】解:设点C表示的数为x,则AC=x﹣(﹣10)=x+10,BC=4﹣x.∵以点C为折点,将此数轴向右对折,若点A在点B的右边,且AB=2,∴AC﹣BC=2.即:x+10﹣(4﹣x)=2.解得:x=﹣2.故答案为:﹣2.14.(3分)(2021春•浦东新区月考)已知a、b互为相反数,c、d互为倒数,|m|=2,则m+2021(a+b)2020−(cd)2的值为1或﹣3.【解题思路】根据a、b互为相反数,c、d互为倒数,|m|=2,可以得到a+b=0,cd=1,m=±2,然后即可计算出所求式子的值.【解答过程】解:∵a、b互为相反数,c、d互为倒数,|m|=2,∴a+b=0,cd=1,m=±2,当m=2时,m+2021(a+b)2020−(cd)2=2+2021×0 2020−12=2+0﹣1=1;当m=﹣2时,m+2021(a+b)2020−(cd)2=﹣2+2021×0 2020−12=﹣2+0﹣1=﹣3;故答案为:1或﹣3.15.(3分)(2020秋•鼓楼区校级期末)如果x、y都是不为0的有理数,则代数式x|x|−|y|y+xy|xy|的最小值是﹣3.【解题思路】此题要分三种情况进行讨论:①当x,y中有二正;②当x,y中有一负一正;③当x,y中有二负;分别进行计算.【解答过程】解:①当x,y中有二正,x |x|−|y|y+xy|xy|=1﹣1+1=1;②当x,y中有一负一正,x |x|−|y|y+xy|xy|=1+1﹣1=1或x|x|−|y|y+xy|xy|=−1﹣1﹣1=﹣3;③当x,y中有二负,x| |x|−|y|y+xy|xy|=−1+1+1=1.故代数式x||x|−|y|y+xy|xy|的最小值是﹣3.故答案为:﹣3.16.(3分)(2021春•随县期末)已知[x]表示不超过x的最大整数.如:[3.2]=3,[﹣0.7]=﹣1.现定义:{x}=[x]﹣x,如{1.5}=[1.5]﹣1.5=﹣0.5,则{3.9}+{−32}﹣{1}=﹣1.4.【解题思路】根据题意列式解答即可.【解答过程】解:根据题意可得{3.9}+{−32}﹣{1}=(3﹣3.9)+[(﹣2)﹣(﹣1.5)]﹣(1﹣1)=﹣0.9+(﹣0.5)=﹣1.4.故答案为:﹣1.4.三.解答题(共7小题,满分52分)17.(6分)(2020秋•二七区校级月考)计算:(1)4+(﹣2)3×5﹣(﹣28)÷4+(﹣6)2(2)﹣14−17×|2﹣(﹣3)2|+(−13+34−112)÷(−124)【解题思路】(1)根据有理数的乘方、有理数的乘除法和加法可以解答本题;(2)根据有理数的乘方、有理数的乘除法和加法可以解答本题.【解答过程】解:(1)4+(﹣2)3×5﹣(﹣28)÷4+(﹣6)2=4+(﹣8)×5+7+36=4+(﹣40)+7+36=7;(2)﹣14−17×|2﹣(﹣3)2|+(−13+34−112)÷(−124) =﹣1−17×|2﹣9|+(−13+34−112)×(﹣24) =﹣1−17×7−13×(﹣24)+34×(﹣24)−112×(﹣24) =﹣1﹣1+8+(﹣18)+2 =﹣10.18.(6分)(2020秋•金牛区校级月考)简便计算: (1)4978×(﹣4);(2)78×(−35)+(﹣11)×(−35)+(﹣66)×0.3.【解题思路】(1)原式变形后,利用乘法分配律计算即可求出值; (2)原式逆用乘法分配律计算即可求出值. 【解答过程】解:(1)原式=(50−18)×(﹣4) =﹣200+12=﹣19912;(2)原式=(−35)×(78﹣11)﹣66×0.3 =﹣0.6×67﹣66×0.3 =﹣40.2﹣19.8 =﹣60.19.(8分)(2020秋•庐阳区校级月考)小刚与小明在玩数字游戏,现有5张写着不同数字的卡片(如图),小刚请小明按要求抽出卡片,完成下列各问题:(1)从中取出2张卡片,使这2张卡片上的数字乘积最大,如何抽取?最大值是多少? (2)从中取出2张卡片,使这2张卡片上的数字相除的商最小,如何抽取?最小值是多少?(3)从中取出4张卡片,用学过的运算方法,使结果为24,如何抽取?写出运算式子(一种即可).【解题思路】(1)根据题意和给出的五张卡片可以解答本题; (2)根据题意和给出的五张卡片可以解答本题; (3)根据题意可以写出相应的算式,本题答案不唯一. 【解答过程】解:(1)由题意可得,从中抽取2张卡片,使这2张卡片上数字的乘积最大,抽取﹣(+5)和﹣6,最大值是﹣(+5)×(﹣6)=30;(2)由题意可得,从中抽取2张卡片,使这两张卡片数相除的商最小,抽取3和﹣6,最小值是(﹣6)÷3=2;(3)由题意可得,﹣6×[﹣(+5)+3﹣|﹣2|]=24(答案不唯一).20.(8分)(2020秋•同安区期中)已知|x|+4=12,|y|+3=5:(1)求x,y的取值;(2)当x﹣y<0,求2x+y的值.【解题思路】(1)先变形得到|x|=8,|y|=2,然后根据绝对值的意义得到x和y的值;(2)利用x﹣y<0确定x、y的两组值,然后计算对应的2x+y的值.【解答过程】解:(1)∵|x|+4=12,|y|+3=5,∴|x|=8,|y|=2,∴x=±8;y=±2;(2)∵x﹣y<0,∴x=﹣8,y=2或x=﹣8,y=﹣2,当x=﹣8,y=2时,2x+y=2×(﹣8)+2=﹣14;当x=﹣8,y=﹣2时,2x+y=2×(﹣8)+(﹣2)=﹣18;即2x+y的值为﹣14或﹣18.21.(8分)(2020秋•凌河区校级期中)阅读计算:阅读下列各式:(ab)2=a2b2,(ab)3=a3b3,(ab)4=a4b4…回答下列三个问题:(1)验证:(4×0.25)100=1;4100×0.25100=1.(2)通过上述验证,归纳得出:(ab)n=a n b n;(abc)n=a n b n c n.(3)请应用上述性质计算:(﹣0.125)2015×22014×42014.【解题思路】①先算括号内的,再算乘方;先乘方,再算乘法.②根据有理数乘方的定义求出即可;③根据同底数幂的乘法计算,再根据积的乘方计算,即可得出答案.【解答过程】解:①:(4×0.25)100=1100=1;4100×0.25100=1,故答案为:1,1.②(a•b)n=a n b n,(abc)n=a n b n c n,故答案为:a n b n,(abc)n=a n b n c n.③原式=(﹣0.125)2012×22012×42012×(﹣0.125)=(﹣0.125×2×4)2012×(﹣0.125)=(﹣1)2012×(﹣0.125)=1×(﹣0.125)=﹣0.125.22.(8分)(2020秋•朝阳区校级月考)如图,康康将﹣3,﹣2,﹣1,0,1,2,3,4,5分别填入九个空格内,使每行、每列、每条对角线上的三个数之和相等,其中a、b、c 分别代表其中的一个数.a5031bc﹣34(1)求a,b,c的值各为多少;(2)在第(1)问中,九个数的总和为多少?位于正方形表格最中间格子的数是多少?它们之间有怎样的数量关系?(3)利用上面你发现的规律,将3,5,﹣7,1,7,﹣3,9,﹣5,﹣1这九个数字分别填入如图的九个方格中,使得横、竖、斜对角的三个数的和都相等.【解题思路】(1)根据每行、每列、每条对角线上的三个数之和相等,先求出中间一竖列的和为3,再分别以每一横行的和为3,依次求a,b,c的值;(2)每一竖列的和为3,九个数的总和为3×3,观察表格中间的数字为1,可从倍数上回答数量关系;(3)九方格题目先将数字按从小到大的顺序填入方格后,将对角数字交换位置,再顺时针旋转一格即可.【解答过程】解:(1)∵中间竖列的三个数的和为5+1+(﹣3)=3,∵每行、每列、每条对角线上的三个数之和相等,∴第一横行三个数的为3.∴a=3﹣5﹣0=﹣2.同样的方法可得:b=3﹣3﹣1=﹣1.c=3﹣(﹣3)﹣4=2.答:a=﹣2,b=﹣1,c=2.(2)∵每列上的三个数之和相等,中间竖列的三个数的和为3,且共有三个竖列,九个数的总和为:3×3=9.观察表格中间的数字为1,∴九个数的总和为表格中间的数字的9倍.答:在第(1)问中,九个数的总和为9,表格中间的数字为1,九个数的总和是表格中间的数字的9倍.(3)九个数填表如下:﹣19﹣5﹣3157﹣7323.(8分)(2020秋•临沭县期中)数轴上表示数﹣3的点与原点的距离可记作|﹣3﹣0|=|﹣3|=3;表示数﹣3的点与表示数2的点的距离可记作|﹣3﹣2|=|﹣5|=5.也就是说,在数轴上,如果A点表示的数记为a,B点表示的数记为b.则A,B两点间的距离就可记作|a﹣b|.回答下列问题:(1)数轴上表示3和7的两点之间的距离是4,数轴上表示2和﹣5的两点之间的距离是7;(2)数轴上表示x与﹣3的两点A和B之间的距离为2,那么x为﹣1或﹣5;(3)①找出所有使得|x+1|+|x﹣1|=2的整数x;②若|x+1|+|x﹣1|=4,求x;③求|x+1|+|x﹣1|的最小值.【解题思路】(1)根据数轴上两点间的距离公式直接代入计算即可;(2)根据数轴上两点间的距离公式直接代入可得A,B之间的距离为|x+3|;当AB=2时,即|x+3|=2时,可求得x的值;(3)①从数轴上可以看出只要x取﹣1和1之间的数(包括﹣1,1)就有|x+1|+|x﹣1|=2,可得这样的整数是﹣1,0,1;②根据题意,|x+1|表示的是x到﹣1的距离,|x﹣1|表示的是x到1的距离,|x+1|+|x﹣1|求的是x到1和﹣1的距离和为4,对x进行讨论,可求得对应的x的值.;③在②的基础上,对x进行讨论,可得|x+1|+|x﹣1|的最小值.【解答过程】解:(1)表示3和7的两点之间的距离是|3﹣7|=4,表示2和﹣5的两点之间的距离是|2﹣(﹣5)|=7;故答案为:4;7;(2)由题意可得,|x+3|=2,∴x+3=2或x+3=﹣2,∴x=﹣1或x=﹣5;故答案为:﹣1或﹣5.(3)①从数轴上可以看出只要x取﹣1和1之间的数(包括﹣1,1),就有|x+1|+|x﹣1|=2,因此这样的整数是﹣1,0,1;②当x在﹣1到1之间时,如图1,有|x+1|+|x﹣1|=2,恒成立,|x+1|+|x﹣1|=4,无解.当x在﹣1的左侧时,如图2,∵|x+1|+|x﹣1|=4,∴﹣x﹣1﹣x+1=4,解得x=﹣2.当x在1 的右侧时,如图3,∵|x+1|+|x﹣1|=4,∴x+1+x﹣1=4,解得x=2.③在②的基础上对x进行讨论:当﹣1<x<1时,|x+1|+|x﹣1|=x+1﹣x+1=2,恒成立;当x≤﹣1时,|x+1|+|x﹣1|=﹣x﹣1﹣x+1=﹣2x≥2;当x≥1 时,|x+1|+|x﹣1|=x+1+x﹣1=2x≥2;综上,|x+1|+|x﹣1|的最小值为2.。
2022-2023学年浙江七年级数学上学期同步精讲精练专题2
第2章有理数的运算章末题型过关卷【浙教版】考试时间:60分钟;满分:100分姓名:___________班级:___________考号:___________考卷信息:本卷试题共23题,单选10题,填空6题,解答7题,满分100分,限时60分钟,本卷题型针对性较高,覆盖面广,选题有深度,可衡量学生掌握本章内容的具体情况!一.选择题(共10小题,满分30分,每小题3分)1.(3分)(2022秋•江油市期末)设a是最小的正整数,b是最大的负整数,c是绝对值最小的有理数,则a+b+c等于()A.﹣1B.0C.1D.22.(3分)(2022秋•垦利区期末)在下列说法:①如果a>b,则有|a|>|b|;②若干个有理数相乘,如果负因数的个数是奇数,则乘积一定是负数;③一个有理数的绝对值是它本身,则这个数是正数;④若m+n =0,则m、n互为相反数.其中正确的个数有()A.4个B.3个C.2个D.1个3.(3分)(2022秋•石家庄期末)已知三个数a+b+c=0,则这三个数在数轴上表示的位置不可能是()A.B.C.D.4.(3分)(2022•下城区校级模拟)如图,在一个由6个圆圈组成的三角形里,把1到6这6个数分别填入图的圆圈中,要求三角形的每条边上的三个数的和S都相等,那么S的最大值是()A.9B.10C.12D.135.(3分)(2022秋•渝中区校级期末)一台机器有大、小齿轮用同一传送带连接,若大小齿轮的齿数分别为36和12个,大齿轮每分钟2.5×103转,则小齿轮10小时转()A.1.5×106转B.5×105转C.4.5×106转D.15×106转6.(3分)(2022秋•衢州期中)等边△ABC在数轴上的位置如图所示,点A、C对应的数分别为0和﹣1,若△ABC绕着顶点顺时针方向在数轴上连续翻转,翻转1次后,点B所对应的数为1;则翻转2018次后,点B所对应的数是()A.2017B.2016.5C.2015.5D.2015 7.(3分)(2022•台湾)小嘉全班在操场上围坐成一圈.若以班长为第1人,依顺时针方向算人数,小嘉是第17人;若以班长为第1人,依逆时针方向算人数,小嘉是第21人.求小嘉班上共有多少人()A.36B.37C.38D.398.(3分)(2022春•通州区期末)数轴上某一个点表示的数为a,比a小2的数用b表示,那么|a|+|b|的最小值为()A.0B.1C.2D.39.(3分)(2022秋•江都区月考)定义一种关于整数n的“F”运算:(1)当n是奇数时,结果为3n+5;(2)当n是偶数时,结果是n2k (其中k是使n2k是奇数的正整数),并且运算重复进行.例如:取n=58,第一次经F运算是29,第二次经F运算是92,第三次经F运算是23,第四次经F运算是74…;若n=9,则第2017次运算结果是()A.1B.2C.7D.810.(3分)(2022秋•安居区期中)若a,b,c均为正数,则a+b﹣c,b+c﹣a,c+a﹣b这三个数中出现负数的情况是()A.不可能有负数B.必有一个负数C.至多有一个负数D.可能有两个负数二.填空题(共6小题,满分18分,每小题3分)11.(3分)(2022秋•饶平县校级期末)一滴墨水洒在一个数轴上,根据图中标出的数值,判断墨迹盖住的整数个数是.12.(3分)(2022秋•成都期末)已知,|a|=﹣a,|b|b=−1,|c|=c,化简|a+b|﹣|a﹣c|﹣|b﹣c|=.13.(3分)(2022春•嘉兴月考)在长为20米、宽为15米的长方形地面上修筑一条宽度为2米的道路(图中阴影部分),余下部分作为耕地,则耕地面积为平方米.14.(3分)(2022秋•天桥区期末)将数轴上一点P 先向右移动3个单位长度,再向左移动5个单位长度,此时它表示的数是4,则原来点P 表示的数是 .15.(3分)(2022秋•梁平区期末)某公交车原坐有22人,经过4个站点时上下车情况如下(上车为正,下车为负):(+4,﹣8),(﹣5,+6),(﹣3,+2),(+1,﹣7),则车上还有 人.16.(3分)(2022秋•普陀区校级月考)我们知道,每个自然数都有因数,对于一个自然数a ,我们把小于a 的正的因数叫做a 的真因数.如10的正因数有1、2、5、10,其中1、2、5是10的真因数.把一个自然数a 的所有真因数的和除以a ,所得的商叫做a 的“完美指标”.如10的“完美指标”是(1+2+5)÷10=45.一个自然数的“完美指标”越接近1,我们就说这个数越“完美”.如8的“完美指标”是(1+2+4)÷8=78,10的“完美指标”是45,因为78比45更接近1,所以我们说8比10更完美.那么比10大,比20小的自然数中,最“完美”的数是 .三.解答题(共7小题,满分52分)17.(6分)(2022秋•荣成市期中)把下列各数填在相应的集合中:15,−12,0.81,﹣3,227,﹣3.1,﹣4,171,0,3.14,π,﹣1.6⋅.正数集合{ …};负分数集合{ …};非负整数集合{ …};有理数集合{ …}.18.(6分)(2022秋•垦利区期末)计算:(1)(﹣5)+(﹣4)﹣(+101)﹣(﹣9);(2)−12021×[4−(−3)2]+3÷(−34); (3)(512−79+23)÷136; (4)−316×7−316×(−9)+(−196)×(−8).19.(8分)(2022秋•井研县期末)某公司6天内货品进出仓库的吨数如下:(“+”表示进库,“﹣”表示出库)+21,﹣32,﹣16,+35,﹣38,﹣20(1)经过这6天,仓库里的货品是 (填增多了还是减少了).(2)经过这6天,仓库管理员结算发现仓库里还有货品460吨,那么6天前仓库里有货品多少吨?(3)如果进出的装卸费都是每吨5元,那么这6天要付多少元装卸费?20.(8分)(2022秋•简阳市 期末)在解决数学问题的过程中,我们常用到“分类讨论”的数学思想,下面是运用分类讨论的数学思想解决问题的过程,请仔细阅读,并解答问题.【提出问题】三个有理数a ,b ,c 满足abc >0,求|a|a +|b|b +|c|c 的值. 【解决问题】解:由题意,得a ,b ,c 三个有理数都为正数或其中一个为正数,另两个为负数.①a ,b ,c 都是正数,即a >0,b >0,c >0时,则|a|a +|b|b +|c|c =a a +b b +c c=1+1+1=3; ②当a ,b ,c 中有一个为正数,另两个为负数时,不妨设a >0,b <0,c <0,则|a|a +|b|b +|c|c =a a +−b b +−c c =1+(−1)+(−1)=−1.综上所述,|a|a +|b|b +|c|c 值为3或﹣1.【探究】请根据上面的解题思路解答下面的问题:(1)三个有理数a ,b ,c 满足abc <0,求|a|a +|b|b +|c|c 的值; (2)若a ,b ,c 为三个不为0的有理数,且a |a|+b |b|+c |c|=−1,求abc |abc|的值.21.(8分)(2022秋•渝中区校级期末)阅读理解把几个数用大括号围起来,中间用逗号断开,如:{3,4},{﹣3,6,8,18},我们称之为集合,其中大括号内的数称其为集合的元素.如果一个集合满足:只要其中有一个元素a ,使得﹣2a +4也是这个集合的元素,这样的集合我们称为条件集合,例如:集合{3,﹣2},因为﹣2×3+4=﹣2,﹣2恰好是这个集合的元素,所以{3,﹣2}是条件集合;例如:集合{﹣2,9,8},因为﹣2×(﹣2)+4=8,8恰好是这个集合的元素,所以{﹣2,9,8}是条件集合.(1)集合{﹣4,12} 条件集合;集合{12,−53,223} 条件集合(填“是”或“不是”) (2)若集合{8,10,n }和集合{﹣m }都是条件集合,求m ,n 的和.22.(8分)(2022秋•万州区期末)一个能被13整除的自然数我们称为“十三数”,“十三数”的特征是:若把这个自然数的末三位与末三位以前的数字组成的数之差,如果能被13整除,那么这个自然数就一定能被13整除.例如:判断383357能不能被13整除,这个数的末三位数字是357,末三位以前的数字组成的数是383,这两个数的差是383﹣357=26,26能被13整除,因此383357是“十三数”.(1)判断3253和254514是否为“十三数”,请说明理由.(2)若一个四位自然数,千位数字和十位数字相同,百位数字与个位数字相同,则称这个四位数为“间同数”.①求证:任意一个四位“间同数”能被101整除.②若一个四位自然数既是“十三数”,又是“间同数”,求满足条件的所有四位数的最大值与最小值之差.23.(8分)(2022秋•通川区期末)已知数轴上三点A,O,B表示的数分别为6,0,﹣4,动点P从A 出发,以每秒6个单位的速度沿数轴向左匀速运动.(1)当点P到点A的距离与点P到点B的距离相等时,点P在数轴上表示的数是;(2)另一动点R从B出发,以每秒4个单位的速度沿数轴向左匀速运动,若点P、R同时出发,问点P 运动多少时间追上点R?(3)若M为AP的中点,N为PB的中点,点P在运动过程中,线段MN的长度是否发生变化?若发生变化,请你说明理由;若不变,请你画出图形,并求出线段MN的长度.第2章有理数的运算章末题型过关卷【浙教版】参考答案与试题解析一.选择题(共10小题,满分30分,每小题3分)1.(3分)(2022秋•江油市期末)设a是最小的正整数,b是最大的负整数,c是绝对值最小的有理数,则a+b+c等于()A.﹣1B.0C.1D.2【分析】由a是最小的正整数,b是最大的负整数,c是绝对值最小的有理数,可得,a=1,b=﹣1,c =0,则a+b+c=1+(﹣1)+0=0.【解答】解:依题意得:a=1,b=﹣1,c=0,∴a+b+c=1+(﹣1)+0=0.故选:B.2.(3分)(2022秋•垦利区期末)在下列说法:①如果a>b,则有|a|>|b|;②若干个有理数相乘,如果负因数的个数是奇数,则乘积一定是负数;③一个有理数的绝对值是它本身,则这个数是正数;④若m+n =0,则m、n互为相反数.其中正确的个数有()A.4个B.3个C.2个D.1个【分析】根据绝对值、有理数的乘法、相反数解决此题.【解答】解:①如果a>b,如1>﹣2,|1|=1,|﹣2|=2,但|1|<|﹣2|,那么|a|>|b|不一定成立,故①不正确.②若干个不为0的有理数相乘,如果负因数的个数是奇数,则乘积一定是负数,故②不正确.③根据绝对值的定义,当a≥0,则|a|=a,即0或正数的绝对值等于本身,故③不正确.④根据等式的性质,m+n=0,则m=﹣n,那么m与n互为相反数,故④正确.综上:正确的有④,共1个.故选:D.3.(3分)(2022秋•石家庄期末)已知三个数a+b+c=0,则这三个数在数轴上表示的位置不可能是()A.B.C.D.【分析】根据a+b+c=0可判断三个数中一定有一个正数和一个负数,讨论:若第三个数为负数,根据绝对值的意义得到两负数表示的点到原点的距离等于正数到原点的距离;若第三个数为正数,则两正数表示的点到原点的距离等于负数到原点的距离,然后利用此特征对各选项进行判断.【解答】解:已知a+b+c=0,A.由数轴可知,a>0>b>c,当|a|=|b|+|c|时,满足条件.B.由数轴可知,a>b>0>c,当|c|=|a|+|b|时,满足条件.C.由数轴可知,a>c>0>b,当|b|=|a|+|c|时,满足条件.D.由数轴可知,a>0>b>c,且|a|<|b|+|c|时,所以不可能满足条件.故选:D.4.(3分)(2022•下城区校级模拟)如图,在一个由6个圆圈组成的三角形里,把1到6这6个数分别填入图的圆圈中,要求三角形的每条边上的三个数的和S都相等,那么S的最大值是()A.9B.10C.12D.13【分析】三个顶角分别是4,5,6,4与5之间是3,6和5之间是1,4和6之间是2,这样每边的和才能相等.【解答】解:三边之和是3s,等于1+2+...6+三个顶点的值.而三个顶点的值最大是4+5+6,当三个顶点分别是4,5,6时,可以构成符合题目的三角形.所以s最大为(1+2+3+4+5+6+4+5+6)÷3=12.故选:C.5.(3分)(2022秋•渝中区校级期末)一台机器有大、小齿轮用同一传送带连接,若大小齿轮的齿数分别为36和12个,大齿轮每分钟2.5×103转,则小齿轮10小时转()A.1.5×106转B.5×105转C.4.5×106转D.15×106转【分析】大、小齿轮用同一传送带连接,则大小齿轮转的距离相等,大齿轮每分钟2.5×103,每小时转60×2.5×103转.科学记数法的表示形式为a×10n的形式,其中1≤|a|<10,n为整数.确定n的值时,要看把原数变成a 时,小数点移动了多少位,n的绝对值与小数点移动的位数相同.当原数绝对值大于10时,n是正数;当原数的绝对值小于1时,n是负数.【解答】解:小齿轮10小时转60×2.5×103×10×(36÷12)=4.5×106转.故选:C.6.(3分)(2022秋•衢州期中)等边△ABC在数轴上的位置如图所示,点A、C对应的数分别为0和﹣1,若△ABC绕着顶点顺时针方向在数轴上连续翻转,翻转1次后,点B所对应的数为1;则翻转2018次后,点B所对应的数是()A.2017B.2016.5C.2015.5D.2015【分析】作出草图,不难发现,每3次翻转为一个循环组依次循环,2018除以3余数为2,根据余数可知点B在数轴上,然后进行计算即可得解.【解答】解:如图,由题意可得,每3次翻转为一个循环组依次循环,∵2018÷3=672…2,∴翻转2018次后点B在数轴上,∴点B对应的数是2018﹣1=2017.故选:A.7.(3分)(2022•台湾)小嘉全班在操场上围坐成一圈.若以班长为第1人,依顺时针方向算人数,小嘉是第17人;若以班长为第1人,依逆时针方向算人数,小嘉是第21人.求小嘉班上共有多少人()A.36B.37C.38D.39【分析】若以班长为第1人,依顺时针方向算人数,小嘉是第17人,此时共有17人;若以班长为第1人,依逆时针方向算人数,小嘉是第21人,此时共有21人,但班长和小嘉两次都数了,所以要减去2.【解答】解:根据题意小嘉和班长两次都数了,所以17+21﹣2=36.故选:A.8.(3分)(2022春•通州区期末)数轴上某一个点表示的数为a,比a小2的数用b表示,那么|a|+|b|的最小值为()A.0B.1C.2D.3【分析】理解绝对值的定义,如|a﹣2|表示数轴上点a到2的距离;|a|=|a﹣0|表示a到原点的距离;【解答】解:∵比a小2的数用b表示,∴b=a﹣2,∴|a|+|b|=|a﹣0|+|a﹣2|,那么|a|+|b|的最小值就是在数轴上找一点a到原点和到2的距离最小,显然这个点就是在0与2之间,当a在区间0与2之间时,|a﹣0|+|a﹣2|=|2﹣0|=2为最小值,∴|a|+|b|的最小值为2,故选:C.9.(3分)(2022秋•江都区月考)定义一种关于整数n的“F”运算:(1)当n是奇数时,结果为3n+5;(2)当n是偶数时,结果是n2k (其中k是使n2k是奇数的正整数),并且运算重复进行.例如:取n=58,第一次经F运算是29,第二次经F运算是92,第三次经F运算是23,第四次经F运算是74…;若n=9,则第2017次运算结果是()A.1B.2C.7D.8【分析】根据关于整数n的“F”运算:探究规律后即可解决问题;【解答】解:由题意n=9时,第一次经F运算是32,第二次经F运算是1,第三次经F运算是8,第四次经F运算是1…以后出现1、8循环,奇数次是8,偶数次是1,∴第2017次运算结果8,故选:D.10.(3分)(2022秋•安居区期中)若a,b,c均为正数,则a+b﹣c,b+c﹣a,c+a﹣b这三个数中出现负数的情况是()A.不可能有负数B.必有一个负数C.至多有一个负数D.可能有两个负数【分析】本题可采用假设法,当a=1,b=1,c=3时有(1+1)﹣3<0,1+3﹣1>0,1+3﹣1>0,这样有一个负数,排除A,当a=b=c=1时,没有负数,故B错误,再假设有两个负数,则设a+b<c①,b+c<a②,得出结果矛盾与已知条件,排除D,采用排除法选出答案.【解答】解:显然当a=1,b=1,c=3时有(1+1)﹣3<0,1+3﹣1>0,1+3﹣1>0,所以排除A.当a=b=c=1时,没有负数,故B错误,对于D,若假设有两个负数,则不防设:a+b<c①,b+c<a②由①+②可得:b<0,矛盾于已知条件,∴假设错误,不可能有两个负数,同理a+b﹣c,a+c﹣b,b+c﹣a中不可能有3个负数,故选:C.二.填空题(共6小题,满分18分,每小题3分)11.(3分)(2022秋•饶平县校级期末)一滴墨水洒在一个数轴上,根据图中标出的数值,判断墨迹盖住的整数个数是120.【分析】根据实数在数轴上排列的特点判断出墨迹盖住的最左侧的整数和最右侧的整数,即可得到所有的被盖住的整数.【解答】解:因为墨迹最左端的实数是﹣109.2,最右端的实数是10.5.根据实数在数轴上的排列特点,可得墨迹遮盖部分最左侧的整数是﹣109,最右侧的整数是10.所以遮盖住的整数共有120个.故答案是:120.=−1,|c|=c,化简|a+b|﹣|a﹣c|﹣|b﹣c|=﹣2c.12.(3分)(2022秋•成都期末)已知,|a|=﹣a,|b|b【分析】根据题意,利用绝对值的代数意义判断出a,b,c的正负,原式利用绝对值的代数意义化简即可得到结果.=−1,|c|=c,∴a为非正数,b为负数,c为非负数,【解答】解:∵|a|=﹣a,|b|b∴a+b<0,a﹣c≤0,b﹣c<0,则原式=﹣a﹣b+a﹣c+b﹣c=﹣2c,故答案为:﹣2c13.(3分)(2022春•嘉兴月考)在长为20米、宽为15米的长方形地面上修筑一条宽度为2米的道路(图中阴影部分),余下部分作为耕地,则耕地面积为234平方米.【分析】利用平移的知识,将图中阴影部分转化为宽2,长(20+15﹣2)的长方形.【解答】解:根据题意可得,耕地面积为20×15﹣2×(20+15﹣2)=234平方米. 答:耕地面积为234平方米.14.(3分)(2022秋•天桥区期末)将数轴上一点P 先向右移动3个单位长度,再向左移动5个单位长度,此时它表示的数是4,则原来点P 表示的数是 6 .【分析】设开始点P 表示的数为x ,由于在数轴上的点向左移时点表示的数要减小,向右移动时,点表示的数要增大,于是得到x +3﹣5=4,然后解一次方程即可. 【解答】解:设点P 原来表示的数为x , 根据题意,得:x +3﹣5=4, 解得:x =6,即原来点P 表示的数是6, 故答案为:6.15.(3分)(2022秋•梁平区期末)某公交车原坐有22人,经过4个站点时上下车情况如下(上车为正,下车为负):(+4,﹣8),(﹣5,+6),(﹣3,+2),(+1,﹣7),则车上还有 12 人. 【分析】根据有理数的加法,可得答案. 【解答】解:由题意,得22+4+(﹣8)+6+(﹣5)+2+(﹣3)+1+(﹣7)=12(人), 故答案为:1216.(3分)(2022秋•普陀区校级月考)我们知道,每个自然数都有因数,对于一个自然数a ,我们把小于a 的正的因数叫做a 的真因数.如10的正因数有1、2、5、10,其中1、2、5是10的真因数.把一个自然数a 的所有真因数的和除以a ,所得的商叫做a 的“完美指标”.如10的“完美指标”是(1+2+5)÷10=45.一个自然数的“完美指标”越接近1,我们就说这个数越“完美”.如8的“完美指标”是(1+2+4)÷8=78,10的“完美指标”是45,因为78比45更接近1,所以我们说8比10更完美.那么比10大,比20小的自然数中,最“完美”的数是 16 .【分析】根据“完美指标”的意义知道,自然数的真因数越多,此数越完美;因为在11﹣19的数中,11、13、17、19是质数,真因数只有1,所以先排除这4个数,再分别找出12、14、15、16、18的正因数,再分别找出它们的真因数,最后再由“完美指标”的意义,分别求出“完美指标”. 【解答】解:12的正因数有:1、2、3、4、6、12,其中1、2、3、4、6是真因数, 完美指标:(1+2+3+4+6)÷12=43≈1.33,14的正因数有:1、2、7、14,其中1、2、7是真因数, 完美指标:(1+2+7)÷14=57≈0.71,15的正因数有:1、3、5、15,其中1、3、5是真因数, 完美指标:(1+3+5)÷15=35=0.6,16的正因数有:1、2、4、8、16,其中1、2、4、8是真因数, 完美指标:(1+2+4+8)÷16=1516≈0.94,18的正因数有:1、2、3、6、9、18,其中1、2、3、6、9是真因数, 完美指标:(1+2+3+6+9)÷18=76≈1.17,由以上所求的完美指标知道,16的完美指标最接近1, 所以,比10大,比20小的自然数中,最“完美”的数是16. 答:比10大,比20小的自然数中,最“完美”的数是16. 故答案为:16.三.解答题(共7小题,满分52分)17.(6分)(2022秋•荣成市期中)把下列各数填在相应的集合中:15,−12,0.81,﹣3,227,﹣3.1,﹣4,171,0,3.14,π,﹣1.6⋅. 正数集合{ 15,0.81,227,171,3.14,π …};负分数集合{ −12,﹣3.1,﹣1.6⋅…};非负整数集合{ 15,171,0 …};有理数集合{ 15,−12,0.81,﹣3,227,﹣3.1,﹣4,171,0,3.14,﹣1.6⋅…}. 【分析】根据正数、负分数、有理数的意义直接把数据分类即可. 【解答】解:正数集合{15,0.81,227,171,3.14,π…};负分数集合{−12,﹣3.1,﹣1.6⋅⋯}; 非负整数集合{15,171,0…};有理数集合{15,−12,0.81,﹣3,227,﹣3.1,﹣4,171,0,3.14,﹣1.6⋅⋯}.故答案为:15,0.81,227,171,3.14,π;−12,﹣3.1,﹣1.6⋅;15,171,0;15,−12,0.81,﹣3,227,﹣3.1,﹣4,171,0,3.14,﹣1.6⋅. 18.(6分)(2022秋•垦利区期末)计算: (1)(﹣5)+(﹣4)﹣(+101)﹣(﹣9); (2)−12021×[4−(−3)2]+3÷(−34);(3)(512−79+23)÷136;(4)−316×7−316×(−9)+(−196)×(−8).【分析】(1)先把减法转化为加法,然后根据有理数的加法法则计算即可; (2)先算乘方和括号内的式子,然后计算括号外的乘除法、最后算加法即可; (3)先把除法转化为乘法、然后根据乘法分配律计算即可; (4)先将带分数化为假分数,然后根据乘法分配律计算即可. 【解答】解:(1)(﹣5)+(﹣4)﹣(+101)﹣(﹣9) =(﹣5)+(﹣4)+(﹣101)+9 =﹣101;(2)−12021×[4−(−3)2]+3÷(−34) =﹣1×(4﹣9)+3×(−43) =﹣1×(﹣5)+(﹣4) =5+(﹣4)=1; (3)(512−79+23)÷136 =(512−79+23)×36 =512×36−79×36+23×36 =15﹣28+24=11;(4)−316×7−316×(−9)+(−196)×(−8)=−196×7−196×(﹣9)−196×(﹣8)=−196×[7+(﹣9)+(﹣8)]=−196×(﹣10)=953.19.(8分)(2022秋•井研县期末)某公司6天内货品进出仓库的吨数如下:(“+”表示进库,“﹣”表示出库)+21,﹣32,﹣16,+35,﹣38,﹣20(1)经过这6天,仓库里的货品是减少了(填增多了还是减少了).(2)经过这6天,仓库管理员结算发现仓库里还有货品460吨,那么6天前仓库里有货品多少吨?(3)如果进出的装卸费都是每吨5元,那么这6天要付多少元装卸费?【分析】(1)将所有数据相加即可作出判断,若为正,则说明增多了,若为负,则说明减少了;(2)结合(1)的答案即可作出判断;(3)计算出所有数据的绝对值之和,然后根据进出的装卸费都是每吨5元,可得出这6天要付的装卸费.【解答】解:(1)21﹣32﹣16+35﹣38﹣20=﹣50,即经过这6天,仓库里的货品是减少了;(2)由(1)得,这6天减少了50吨,则6天前仓库里有货品460+50=510(吨);(3)21+32+16+35+38+20=162吨,则装卸费为:162×5=810元.答:这6天要付810元装卸费.20.(8分)(2022秋•简阳市期末)在解决数学问题的过程中,我们常用到“分类讨论”的数学思想,下面是运用分类讨论的数学思想解决问题的过程,请仔细阅读,并解答问题.【提出问题】三个有理数a,b,c满足abc>0,求|a|a +|b|b+|c|c的值.【解决问题】解:由题意,得a,b,c三个有理数都为正数或其中一个为正数,另两个为负数.①a,b,c都是正数,即a>0,b>0,c>0时,则|a|a +|b|b+|c|c=aa+bb+cc=1+1+1=3;②当a ,b ,c 中有一个为正数,另两个为负数时,不妨设a >0,b <0,c <0,则|a|a +|b|b+|c|c=a a +−b b+−c c=1+(−1)+(−1)=−1. 综上所述,|a|a+|b|b+|c|c值为3或﹣1.【探究】请根据上面的解题思路解答下面的问题: (1)三个有理数a ,b ,c 满足abc <0,求|a|a +|b|b+|c|c的值;(2)若a ,b ,c 为三个不为0的有理数,且a |a|+b|b|+c|c|=−1,求abc|abc|的值.【分析】(1)仿照题目给出的思路和方法,解决(1)即可;(2)根据已知等式,利用绝对值的代数意义判断出a ,b ,c 中负数有2个,正数有1个,判断出abc 的正负,原式利用绝对值的代数意义化简计算即可. 【解答】解:(1)∵abc <0,∴a ,b ,c 都是负数或其中一个为负数,另两个为正数, ①当a ,b ,c 都是负数,即a <0,b <0,c <0时, 则:|a|a+|b|b+|c|c=−a a+−b b+−c c=−1﹣1﹣1=﹣3;②a ,b ,c 有一个为负数,另两个为正数时,设a <0,b >0,c >0, 则|a|a +|b|b+|c|c=−a a+b b +cc =−1+1+1=1.(2)∵a ,b ,c 为三个不为0的有理数,且a|a|+b|b|+c|c|=−1, ∴a ,b ,c 中负数有2个,正数有1个, ∴abc >0,∴abc |abc|=abc abc=1.21.(8分)(2022秋•渝中区校级期末)阅读理解把几个数用大括号围起来,中间用逗号断开,如:{3,4},{﹣3,6,8,18},我们称之为集合,其中大括号内的数称其为集合的元素.如果一个集合满足:只要其中有一个元素a ,使得﹣2a +4也是这个集合的元素,这样的集合我们称为条件集合,例如:集合{3,﹣2},因为﹣2×3+4=﹣2,﹣2恰好是这个集合的元素,所以{3,﹣2}是条件集合;例如:集合{﹣2,9,8},因为﹣2×(﹣2)+4=8,8恰好是这个集合的元素,所以{﹣2,9,8}是条件集合.(1)集合{﹣4,12} 是 条件集合;集合{12,−53,223} 是 条件集合(填“是”或“不是”) (2)若集合{8,10,n }和集合{﹣m }都是条件集合,求m ,n 的和.【分析】(1)依据一个集合满足:只要其中有一个元素a ,使得﹣2a +4也是这个集合的元素,这样的集合我们称为条件集合,即可得到结论;(2)分情况讨论:若n =﹣2×8+4,则n =﹣12;若n =﹣2×10+4,则n =﹣16;若﹣2n +4=8,则n =﹣2;若﹣2n +4=10,则n =﹣3;若﹣2n +4=n ,则n =43;若﹣m ×(﹣2)+4=﹣m ,则m =−43;据此可得m ,n 的和.【解答】解:(1)∵﹣4×(﹣2)+4=12, ∴集合{﹣4,12}是条件集合; ∵−53×(﹣2)+4=223,∴集合{12,−53,223}是条件集合; 故答案为:是,是;(2)∵集合{8,10,n }和集合{﹣m }都是条件集合, ∴若n =﹣2×8+4,则n =﹣12; 若n =﹣2×10+4,则n =﹣16; 若﹣2n +4=8,则n =﹣2; 若﹣2n +4=10,则n =﹣3; 若﹣2n +4=n ,则n =43;若﹣m ×(﹣2)+4=﹣m ,则m =−43;∴m ,n 的和为:﹣1313,﹣1713,﹣313,﹣413,0.22.(8分)(2022秋•万州区期末)一个能被13整除的自然数我们称为“十三数”,“十三数”的特征是:若把这个自然数的末三位与末三位以前的数字组成的数之差,如果能被13整除,那么这个自然数就一定能被13整除.例如:判断383357能不能被13整除,这个数的末三位数字是357,末三位以前的数字组成的数是383,这两个数的差是383﹣357=26,26能被13整除,因此383357是“十三数”. (1)判断3253和254514是否为“十三数”,请说明理由.(2)若一个四位自然数,千位数字和十位数字相同,百位数字与个位数字相同,则称这个四位数为“间同数”.①求证:任意一个四位“间同数”能被101整除.②若一个四位自然数既是“十三数”,又是“间同数”,求满足条件的所有四位数的最大值与最小值之差.【分析】(1)根据“十三数”的特征,列出算式求解即可;(2)①设任意一个四位“间同数”为abab(1≤a≤9,0≤b≤9,a、b为整数),列式abab101计算可得10a+b,从而求解;②解法一:可以结合①,101(10a+b)是13的倍数,根据a,b是1﹣9的整数,那么当a取得最大时,是9,对应的b是1,最小的话是a=1,对应的b=3,计算差可得结论;解法二:同理设出这个四位“间同数”为abab(1≤a≤9,0≤b≤9,a、b为整数),可知101b+9a是13的倍数,分别讨论可得结论.解法三:可借助于第一小问.4位的间同数可表示为101(10a+b),因其能被13整除,而101不能被13整除,所以10a+b是13的倍数,故10a+b最小为13,最大为91.从而可得结论;也可以从101(10a+b)是13的倍数,所以这样的四位数需是13×101的倍数.故最小为1313,最大为9191.【解答】(1)解:3253不是“十三数”,254514是“十三数”,理由如下:∵3﹣253=﹣250,不能被13整除,∴3253不是“十三数”,∵254﹣514=﹣260,﹣260÷13=﹣20∴254514是“十三数”;(2)①证明:设任意一个四位“间同数”为abab(1≤a≤9,0≤b≤9,a、b为整数),∵abab101=1000a+100b+10a+b101=1010a+101b101=10a+b,∵a、b为整数,∴10a+b是整数,即任意一个四位“间同数”能被101整除;②解:解法一:由①可知:这个四位“间同数”表示为101(10a+b),它是13的倍数,∵1≤a≤9,0≤b≤9,a、b为整数,∴当a=9,b=1时,abab最大为9191,当a=1,b=3时,abab最小为1313,∴9191﹣1313=7878;解法二:设任意一个四位“间同数”为abab(1≤a≤9,0≤b≤9,a、b为整数),∵bab−a13=101b+9a13,∵这个四位自然数是“十三数”,∴101b+9a是13的倍数,当a=1,b=3时,101b+9a=303+9=312,312÷13=24,此时这个四位“间同数”为:1313;当a=2,b=6时,101b+9a=606+18=624,624÷13=48,此时这个四位“间同数”为:2626;当a=3,b=9时,101b+9a=909+27=736,936÷13=72,此时这个四位“间同数”为:3939;当a=5,b=2时,101b+9a=202+45=247,247÷13=19,此时这个四位“间同数”为:5252;当a=6,b=5时,101b+9a=505+54=559,559÷13=43,此时这个四位“间同数”为:6565;当a=7,b=8时,101b+9a=808+63=871,871÷13=67,此时这个四位“间同数”为:7878;当a=9,b=1时,101b+9a=101+81=182,182÷13=14,此时这个四位“间同数”为:9191;综上可知:这个四位“间同数”最大为9191,最小为1313,9191﹣1313=7878,则满足条件的所有四位数的最大值与最小值之差为7878;解法三:由①可设4位的间同数可表示为101(10a+b),因其能被13整除,而101不能被13整除,所以10a+b是13的倍数,故10a+b最小为13,最大为91∴最大值与最小值之差为:101(91﹣13)=7878.23.(8分)(2022秋•通川区期末)已知数轴上三点A,O,B表示的数分别为6,0,﹣4,动点P从A 出发,以每秒6个单位的速度沿数轴向左匀速运动.(1)当点P到点A的距离与点P到点B的距离相等时,点P在数轴上表示的数是1;(2)另一动点R从B出发,以每秒4个单位的速度沿数轴向左匀速运动,若点P、R同时出发,问点P 运动多少时间追上点R?(3)若M为AP的中点,N为PB的中点,点P在运动过程中,线段MN的长度是否发生变化?若发生变化,请你说明理由;若不变,请你画出图形,并求出线段MN的长度.【分析】(1)根据中点坐标公式即可求解;(2)设点P运动x秒时,在点C处追上点R,于是得到AC=6x BC=4x,AB=10,根据AC﹣BC=AB,列方程即可得到结论;(3)线段MN的长度不发生变化,理由如下分两种情况:①当点P在A、B之间运动时②当点P运动到点B左侧时,求得线段MN的长度不发生变化.【解答】解:(1)(6﹣4)÷2=1.故点P在数轴上表示的数是1;故答案为:1;(2)设点P 运动x 秒时,在点C 处追上点R , 则AC =6x BC =4x ,AB =10, ∵AC ﹣BC =AB , ∴6x ﹣4x =10, 解得x =5,∴点P 运动5秒时,追上点R ;(3)线段MN 的长度不发生变化,理由如下分两种情况:①当点P 在A 、B 之间运动时(如图①):MN =MP +NP =12AP +12BP =12(AP +BP )=12AB =5. ②当点P 运动到点B 左侧时(如图②),MN =PM ﹣PN =12AP −12BP =12(AP ﹣BP )=12AB =5. 综上所述,线段MN 的长度不发生变化,其长度为5.。
人教版七年级上学期英语阅读理解专题专练(二)广告布告类
2021-2022学年七年级上学期英语人教版阅读理解专题专练(二)广告布告类1. Part-time (兼职的)jobs for students1. How much can a babysitter get for an hour?A. 5 dollars.B.7 dollars.C.10 dollars.D.12 dollars.2. If Joy wants to get the job in Rose Hotel, she can call Mina at _____.A. 8 am.B. 10 am.C. 5 pm.D. 7 pm.3. What can we know about the holiday job?A. It doesn't require any CV.B. It doesn't provide any pay.C. If you have got it, you needn't work on Monday.D. If you want to get it, you must speak three languages.4. If Harry takes the newspaper delivery job, he must _____.A. work three mornings a weekB. use the bike of the post officeC. finish the work before 7: 00 amD. be interested in the newspapers5. The four pieces of information above may be found in the part of the _____ in a newspaper.A. NewsB. Ad (广告)C. SportsD. Recreation (娱乐)2. If you want to go skiing, Shawnee Mountain is a perfect place. If you go there, lifts (电梯) can help you get to the top of the mountain in 3 minutes. The following is the price table of the lift tickets.1.Shawnee Mountain is a perfect place for _______.A. skiingB. walkingC. climbingD. riding2.If a child of 42cm tall takes the lift with his 18-year-old brother on Thursday morning, they will pay _______.A. $41B. $48C. $37D. $743.As a college student, you can buy a lift ticket at a lower price if you show your ______.A. college nameB. college IDC. phone numberD. Active Duty ID3.1.This is a poster of ______.A. a sports meetingB. a charity walkC. a football matchD. a women's race2.This event will start ______.A. early in the morningB. late in the morningC. early in the afternoonD. late in the afternoon3.If you take part in this event with your parents, the least cost will be ______.A. 105 dollarsB. 120 dollarsC. 165 dollarsD. 360 dollars4. July 21 2020 ABC EnglishEDUCATIONStudents taught to love parentsA middle school in Wuhan has stood out among other schools in students' love and care for their parents. The students are asked to spend at least one hour doing housework for their parents or giving some help in the neighborhood every Sunday, Mother's Day anti parents' birthdays.The school aims (旨在) at turning the students into well-mannered children. The students, mostly from one-child families, were taught to be a good child under strict rules. For example, they are now used to saying good-bye to parents in the morning before they go to school. And no one forgets to say hello to the parents when they return from school. The parents are pleased to find their children can help them with some housework such as making beds, washing and cooking.From Wuhan Post1.The news "Students taught to love parents" was first reported in _____.A.ABC EnglishB.Wuhan PostC.Parent DailyD.School News2.In which part of the newspaper can we read the news?A.CULTURE.B.FAMILY.CATION.D.HISTORY.3.Who started the project?A. The parents.B. The newspapers.C. The neighborhood.D. The school.4.What can we know from the news?A.The school aims at winning a good fame.B.The students were not well-behaved at home.C.The parents are happy to change their children.D.The students are guided on how to love their parents.5.The news mainly tells us _____.A.children from one-child families need strict rulesB.Mother's Day and parents' birthdays are importantC.a project of good manners education has been well carried outD.the school means to turn the students into their parents' helpersWallaSearchAmerica,1.The Walla Walla Wallaby Foundation is set up to _____.A.sell the wallaby's foodB.support the wallabyC.take photos of the wallabyD.provide news about the wallaby2.If you want to give money to support WWWF, you can click on the icon "_____".A.About WWWFB.DonateC.Discussion Forumscational Resources3.The reading material above is _____.A.a diaryB.a storyC.a questionnaireD.a web page6.Cooking ClubWelcome to the Cooking Club. Only boys can join the club. You will find the club is very interesting and you will make some friends here. You can learn many kinds of dishes (菜肴) each week. Cooking at home for your family or your friends is interesting!Dancing ClubCan you dance? Do you want to dance? Join us! The Dancing Club is in our art building. There are fifty students in our club.Music ClubThe club is for all students. Each weekend, we play different kinds of music for you. We also tell you the story behind the music.English ClubAre you worried about your spoken English? You can have a free talk in our club. There are some English teachers here, too.1. A boy can learn to make dishes in the _____.A. Music ClubB. Dancing ClubC. Cooking ClubD. English Club2. Where is the Dancing Club?A. Near the school.B. In the playground.C. In the science building.D. In the art building.3. Which of the following is TRUE?A. Mary can join the Cooking Club with her sister.B. The Dancing Club has forty students.C. Students can go to the Music Club every day.D. You can have a free talk with English teachers in the English Club.1. Sunshine Rock Band needs _____.A. a violin playerB. a reporterC. a swimming coach (教练)D. a table tennis coach2. If you like writing, you can call _____ for a job.A. 8472-9999B. 8665-7868C. 5561-8823D. 5487-65983. Your classmate wants to learn table tennis, so you can advise (建议) her to call _____.A. JoeB. Mr. ZhangC. KarenD. Mike4. The above ads are probably (可能) from _____.A. a newspaperB. a story bookC. a science bookD. a history book8. Flu easily spreads from one person to another. If you are weak, you probably catch flu easily. Do you know how you can avoid flu? Here are some suggestions:Keep in good healthYou can eat everything you want but make sure that your diet is healthy. The healthier you are, the better it is for you to avoid any type of illness around. Most doctors suggest drinking lot of fresh fruit juice and water is helpful to avoid flu.Stay away from people with fluIf a member of family or a friend has flu, stay away from him / her until he / she is well. Flu is very communicable. If you stay with the person with flu, you can catch flu easily. Wear a mask and avoid using things that the person with flu is using.ExerciseExercising will make you stronger, which means a stronger immune system, too. Exercise often so that your body will keep healthy. It doesn't matter what kind of exercise it is.Be happyHappy people are healthy people. Their life isn't stressed out, so they may be safe from illness. If you are unhappy, you will easily get sick.Avoiding the flu is easy. Just boost your immune system and it will take care of the rest.1. How many suggestions of avoiding flu are talked about in the passage?A. ThreeB. FourC. Five2. The underlined word "communicable" means "_____".A.无效的B.致命的C.传染的3. What should we do to stay away from people with flu?A. Exercise often.B. Eat junk food.C. Wear a mask.4. What's the best title (标题) of this passage?A. How to avoid flu.B. How to keep in good health.C. How to exercise.答案以及解析1. 答案:1-5CDCAB解析:1.推理判断题。
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2012高考英语二轮复习专题限时训练专题2 阅读理解37(25分钟)AThe Cave Crawler mining robotWhy do human beings still risk their lives under ground and doing one of the dirtiest and most dangerous jobs in the world? It’s an increasingly urgent question,given the recent high-profile(引人注目的)mining accidents in Sago, W. Va., and Huntington, Utah. A small group of engineers and robotics experts envision(展望)a day in the not-too-distant future when robots and other technology do most of the dangerous mining work..One of the first mining robots was developed five years ago at Carnegie-Mellon University’s Robotics Institute. It was called Groundhog and it looked like a golf cart. It used lasers to “see” in dark tunnels and map abandoned mines—some of the most dangerous work in the business.The latest prototype is called Cave Crawler. It’s a bit smaller than Groundhog, and even more advanced. It can take photos and video and has sensors mounted that can detect the presence of dangerous gases. Incredibly, the robot has a real sense of logic. If it comes across an obstacle it gets momentarily confused, it has to think through the process and where to go next, and sometimes it throws a fit just like a real person.The biggest obstacle, though, is cost. The original research project was federally funded, but that money has dried up, and it’s not clear where future funding will come from. Partly for that reason, and partly because of advances in safety, mining is not nearly as dangerous as it was in the past. Since 1990, fatalities have declined by 67 percent, and injuries by 51 percent, according to the National Mining Association.Some experts predict that robots in mines will serve much of the same function that they do in the automotive industry. The robots do the most repetitive and dangerous jobs, but don’t eliminate the need for human workers.1.The latest robot is more advanced than Groundhog mainly because .A. it can map abandoned minesB. the robot has a real sense of logicC. it can see in the dark tunnelD. it’s a bit smaller than Groundhog2.We can infer from the last paragraph that .A. the mine robots will have a very bright futureB. robots in mines will serve much in the automotive industryC. there will be no need for human workers in minesD. robots in mines have a long way to go3. Which of the following can be the best title of this passage?A. High-profile mining accidents in America.B. The development of robot.C. Could robots replace humans in mines?D. Cave Crawler, the latest robot.BACBWal-Mart is not just the world's largest retailer (零售商). It's the world's largest company, which sells in three months what number-two retailer Home Depot sells in a year.Wal-Mart exercises its power for just one purpose: to bring the lowest possible prices to its customers. At Wal-Mart, that goal is never reached. The retailer has a clear policy for suppliers: On basic products that don't change, the price Wal-Mart will pay, and will charge shoppers, must drop year after year. But what almost no one outside the world of Wal-Mart and none of its 21,000 suppliers know is the high cost of those low prices. To survive in the face of its pricing demands, makers of everything from bikes to jeans have had to close US plants in favor of obtaining products from abroad.Indeed, the real story of Wal-Mart, the story that never gets told, is the story of the pressure the biggest retailer constantly applies to its suppliers in the name of bringing us "every day low prices".The giant retailer' s low prices often come with a high cost. Wal-Mart' s pressure can crush the companies it does business with and force them to send jobs overseas. Are we shopping our way straight to the unemployment line? Of course, US companies have been moving jobs offshore for decades, long before Wal-Mart was a retailing power. But there is no question that the chain is helping accelerate the loss of American jobs to low-wage countries such as Thailand.People ask, "How can it be bad for things to come into the US cheaply?" Sure, it's great to have bargains. But you can' t buy anything if you' re not employed.There is no question that Wal-Mart's drive to squeeze out cost has benefited consumers. By now, it is accepted wisdom that Wal-Mart makes the companies it does business with more efficient and focused. Wal-Mart itself is known for continuous improvement in its ability to handle, move, and track goods. It is legendary (传奇)for forcing its suppliers to redesign everything from their packaging to their computer systems. It is also legendary for quite straightforwardly telling them what it will pay for their goods.1. How do suppliers meet the requirements of Wal-Mart?A. To sell even more goods in three months.B. To cut down the employment rate sharply.C. To charge shoppers at a much higher price.D. To run the business in a well-organized way.2. Wal-Mart's low price policy results in ____.A. more high-paying jobsB. better designed packagesC. bigger profit of its partnersD. more jobless American workers3. What can we infer from the passage?A. Still more quality goods will be provided.B. The food you get at Wal-Mart costs least.C. The value of Mal-Mart is over assessed.D. Wal-Mart is a very demanding company.4. What's the best title for the passage?A. The Fortune Wal-Mart MakesB. The Wal-Mart you don't KnowC. The Biggest Retailer—Wal-MartD. The Money Saving Tip in Wal-MartDDDBCThroughout the 1990s and 2000s until today, Domingo continued performing, singing many of the same roles but adding new roles as well, among them the title roles in Wagner‘s Parsifal and Mozart‘s Idomeneo, Rossini‘s Il barbiere di Siviglia as Figaro, Wagner’s Die Walküre as Siegmund, Lehár‘s The Merry Widow as Danilo and Alfano‘s Cyrano de Bergerac as Cyrano. From the middle 1990s to early in 2008 alone, he added 38 new roles, covering opera in six different languages (English, Italian, French, German, Russian and Spanish). The latest was the Italian opera by George Frideric Handel, Tamerlano.Giving him even greater international recognition outside of the world of opera, he participated in The Three Tenors(男高音)concert at the eve of the 1990 FIFA World Cup Final in Rome with José Carreras and Luciano Pavarotti. The event was originally planned to raise money for the José Carreras International Leukemia(白血病)Foundation and was later repeated a number of times, including at the three later World Cup finals (1994 in Los Angeles, 1998 in Paris, and 2002in Yokohama). Alone, Domingo again made an appearance at the final of the 2006 World Cup in Berlin, along with rising stars Anna Netrebko and Rolando Villazón. On 24 August 2008, Domingo performed a duet with Song Zuying, singing Ài de Huǒyàn (The Flame of Love) at the 2008 Summer Olympics closing ceremony in Beijing.The Beijing Olympics were the second Olympics he performed at; he sang the Olympic Hymn at the closing ceremonies of the Barcelona Olympics.At the Olympic games that followed, he would meet Sissel Kyrkjebø, who performed the Olympic Hymn at both the opening and closing ceremonies at those games.In what has been called his ‘final career move’, Plácido Domingo announced on 25 January2007 that in 2009 he would take on one of Verdi‘s most demanding baritone(男中音)roles, singing the title role in Simon Boccanegra. The first performance was at Berlin State Opera on October 24, followed by 29 other performances during 2009/2010 at major opera houses around the world.He would, however, continue to sing tenor roles beforehand and afterwards.On 16–17 April 2008 he sang during the visit of Pope Benedict XVI at Nationals Park and at the Italian embassy in Washington D.C. Since 1990 Plácido Domingo has received many awards and honors for his achievement in the field of music and in recognition of his many benefit concerts and contributions to various charities.On 15 March 2009, The Metropolitan Opera celebrated Domingo’s 40th anniversary with the company with an on-stage gala dinner at the Met’s 125th anniversary, in honour of his first performance in Adriana Lecouvreur as Maurizio opposite Renata Tebaldi on 28 September 1968. On 29 August 2009 he sang Panis Angelicus at the funeral mass of Senator Ted Kennedy in the Basilica of Our Lady of Perpetual Help in Boston, Massachusetts.On September 20, 2010, Domingo announced that he would renew his contract as General Director of the Los Angeles Opera through 2013.On September 27, 2010, Domingo announced that he will not renew his contract as General Director of the Washington National Opera beyond its June 2011 expiration date.Ever a sympathetic colleague, in March 2011 he refused to sing in Buenos Aires until the city settled a bitter musicians strike at the Teatro Colon.1. What can we conclude from the passage?A. Domingo can only sing in six different languages.B. Domingo won many awards because he sang a lot.C. José Carreras was later diagnosed with Leukemia.D. Domingo enjoyed world-wide popularity as a Tenor.2. Domingo does the following EXCEPT ___________.A. charity workB. promoting world sportsC. organizing anniversary celebrationsD. forming a peaceful society3. Singing at different events of world sports shows that Domingo ___________.A. prefers to try singing in different languages including ChineseB. enjoys watching sports events despite his busy performancesC. would be more than happy to do some benefit work for the worldD. knows clearly that singing for sports events helps him to be famous4. From paragraph 3, we can see that Domingo is a ___________ person.A. challengingB. strictC. responsibleD. hard-working DCCA。