高考易混易错对比选择题100例[优质文档]
【优质文档】高考语文易错字音选择题集锦(直接打印)

字音辨析1.下列加点字的读音,全都不相同的一项是:A.碱.土箴.言喊.叫加减.乘除感.激涕零B.阐.明弹.弓禅.让彰善瘅.恶殚.精竭虑C.赤膊.薄.荷簿.册作茧自缚.博.大精深D.滇.池嗔.怪填.空文思缜.密谨小慎.微2.下列各组中加点字读音相同的一组是:A.好.善乐施好.逸恶劳好.整以暇好.事多磨B.哺.乳动物辅.车相依杂货铺.儿捕.风捉影C.烟雾缭.绕青面獠.牙寥.若晨星燎.了眉毛D.前廊后厦.歃.血为盟煞.有介事煞.费苦心3.下列加点字读音全不相同的一组是:()A.较.真校.对校.训锱铢必较.犯而不校.B.和.缓和.会和.泥一团和.气一唱一和.C.哄.逗起哄.弘.愿哄.堂大笑肱.股之臣D.阜.阳蚌埠.阜.丘物阜.民丰商埠.林立4.下列加点字读音完全不相同的一组是:()A.惶.恐皇.帝装潢.炎皇.子孙慌.里慌张B.惊悚.悚.惧诉讼.耸.人听闻竦.身一摇C.间.隔间.距休闲.草菅.人命言简.意赅D.炮.制眼泡.跑.跳坚船利炮.抱.头鼠窜5.下列词语中加点字读音都相同的一组是:()A.应.运而生应.接不暇得心应.手应.有尽有B.三年五载.载.歌载舞车载.斗量风雪载.途C.抹.尾去零抹.灰上瓦拐弯抹.角一笔抹.煞D.省.视双亲不省.人事大省.大悟自我省.思6.下列加点字读音全部相同的一组是:()A.折.秤折.腾折.耗不折.不扣B.侍.奉窥伺.伺.候伺.机而动C.供.稿供.给供.销供.不应求D.宁.静宁.可宁.肯宁.缺毋滥7.下列加点字读音全部相同的一组是:()A.百战不殆.指日可待.不知好歹.严惩不贷.B.不拘.一格居.安思危举.世闻名笑容可掬.C.容颜憔悴.粹.而不杂心力交瘁.出类拔萃.D.风光绮.丽奇.货可居歧.路亡羊星罗棋.布8.下列词语中加点字的读音全部相同的一组是:()A.强.人所难强.颜欢笑强.弩之末B.字里行间.间.不容发黑白相间.C.禁.闭三日令行禁.止毫无禁.忌D.分.庭抗礼分.外妖娆分.斤掰两9.下列加点字读音全都相同的一组是:()A.惋.伤绾.髻婉.言谢绝音容宛.在B.拾掇.舵.手惰.性气体腐化堕.落C.扁.柏扁.豆神医扁.鹊一叶扁.舟D.肖.像俏.皮硝.烟弥漫销.声匿迹10.下列加点字读音相同的一组是:()A.拙.涩罢黜.咄.嗟立办相形见绌.B.萃取..淬.炼鞠躬尽瘁.猝.不及防C.辟.举开辟.鞭辟.入里独辟.蹊径D.掉转.转.念转.败为胜转.危为安11.下列加点的字读音完全不相同的一组是:()A.数.落数.学数.米而炊数.见不鲜B.恶.心可恶.恶.性循环疾恶.如仇C.差.遣差.劲参差.不齐差.之毫厘D.星宿.宿.敌三天两宿.露天宿.营12.下列加点字的读音都不相同的一组是:()A.仆.倒仆.人风尘仆.仆前仆.后继B.剥.皮剥.离剥.削阶级生吞活剥.C.寥.落寥.寥谬.种流传未雨绸缪.D.札.记扎.营垂死挣扎.荆棘扎.手13.选出加点字的读音相同的一项:()A.奇.偶奇.异奇.光异彩奇.货可居B.拣.选缄.默言语蹇.涩命运多蹇.C.兴.致兴.旺兴.师动众兴.妖作怪D.薄.弱鄙薄.薄.物细故厚今薄.古14.下列加点字的音、调完全相同的一组是()A.看.管看.青看.守看.跌B.朴.刀朴.质俭朴.朴.实C.堤埂.哽.塞绠.绳梗.直(耿直鲠直)D.闷.气闷.倦窒闷.闷.热15.下列各组中加点字读音相同的一组是()A.啜泣缀文辍笔拾掇B.挑动挑衅挑选挑唆C.缭绕镣铐瞭望潦草D.行政行旅行箧行乞16.下列词语中加点的字不完全相同的一项是()A.聆取伶俐灵巧凌晨B.弋腔造诣肄业逃逸C.客栈湛清暂且颤抖D.蓦然冷漠沉默墨家17.下列各组中加点字读音相同的一组是()A.峻拔完竣疏浚骏马B.碧血壁垒璧谢譬如C.燥热噪声暴躁害臊D.咨文恣意姿容资质18.下列各组中加点字读音相同的一组是()A.伺候伺隙伺机而动B.着想着装棋高一着C.折耗折腾损兵折将D.相扑相好相敬如宾19.下列加点的字读音都不相同的一组是()A.便捷便装大腹便便B.鞭笞苔藓百战不殆C.宁静宁可宁死不屈D.供认供述供不应求20下列词语中加点的字,读音全部不相同的一组是()A.跻身同侪针剂济济一堂光风霁月B.殓葬眼睑验收横征暴敛勤俭节约C.禅位阐述忌惮箪食壶浆殚精竭虑D.凄怆寒伧创痕沧海一粟踉踉21.下列加点的字的读音,全都正确的一项是A.复杂(fù)按捺(nài)混淆(xiáo)笔画纤细qiān B.弥补(mí)蓓蕾(bèi)发酵(jiào)不着边际(zhuó)C.拂晓(fó)质量(zhǐ)高档(dàng)大腹便便(pián)D.勒索(lē)结束(sù)喧嚣(xiāo)酗酒滋事(xù)22.下列词语中加点的字,注音全都错误的一组是()A.谲(jué)诈缱绻(quǎn)嗥(háo)叫妍(yán)媸毕露B.糟粕(pò)舛(chuǎn)误巷(xiàng)道潜(qián)移默化C.档(dǎng)次鲫(jí)鱼与(yǔ)会缉(jí)拿归案D.僭(zān)称口讷(nè)郝(nǎn)然同仇敌忾(gài)23.下列各组词语中,加点字的读音都不同的一组是()A.宽宥柚子舳舻烟岚云岫B.创伤悲怆苍茫满目疮痍C.筵席琴弦诞辰垂涎三尺D.矩形拮据焗油前倨后恭24.下列词语中加点字的读音全都正确的一项是()A.翰旋(wò) 发轫(rèn)畏葸(sī)令人咋舌(zé)金蝉脱壳(qiào)B.叱咤(zhà)禀赋(bǐng)脖颈(jìng)繁文缛节(rù)刚愎自用(bì)C.露相(lòu)拓片(tuò) 亲(qìng)家暴戾恣睢(suī)绿林好汉(lù)D.倾轧(yà) 攒击(cuán)阒(qù)寂呱呱坠地(gū)郁悒不乐(yì)25.下列词语中加点的字,读音全都正确的一项是()A.荫庇(yīn) 脑髓(suí) 恸(tòng)哭熏陶渐(jiān)染B.弥笃(dǔ) 果脯(pǔ)契(qì)据群雄角(jué)逐C.慑(shè)服谄(xiàn)媚阜(fù)盛咬文嚼(jiáo)字D.羞赧(nǎn) 嗫嚅(rú)桎梏(gù) 时不我与(yǔ)26.下列词语中加点的字,每对的读音各不相同的一组是()A.刊载/载体行伍/行若无事所向披靡/靡不有初B.起哄/哄骗上乘/千乘之国重在参与/与人为善C.殷切/殷红翘楚/翘首以待桃红柳绿/绿林好汉D.框定/框架当真/螳臂当车参差不齐/参商之阔27.下列各组词语中,每组词语加点字的读音相同的一组是()A.日晕/眩晕掂量/惦记果脯/哺育休憩/修葺B.尽快/尽管沮丧/龃龉娇嗔/瞋目劲旅/径直C.殷实/殷红提防/堤堰濡染/蠕动间距/信笺D.塞责/堵塞沏茶/堆砌拱手/供给行当/巷道28.下列各组词语中加点字的注意完全正确的一组是()A.婀娜(nuó)入场券(juàn)任(rèn)弼时赧(nǎn)然一笑B.啮(niè)噬闷(mèn)罐车冼(xiǎn)星海流水淙(cóng)淙C.扒(pá)手一撮(cuō)毛解(xiè)晓东蒙(méng)头转向D.譬(bǐ)方打折(zhé)扣单(shàn)田芳含辛茹(rú)苦29.下列加点字读音完全不相同的一组是()A.譬如癖好巨擘避让劈波斩浪B.菁华清朗倩影精悍俊男靓女C.闲暇假借遐迩烟霞美玉无瑕D.缟素竹篙艾蒿犒赏槁木死灰30.下列词语中加点的字,每对的读音完全相同的一组是()A.倾轧/轧钢道观/洋洋大观螳臂当车/独当一面B.供认/供奉载体/载歌载舞如法炮制/炮烙之刑C.星宿/住宿屏蔽/孔雀开屏曲突徙薪/曲高和寡D.勾结/勾当铜臭/遗臭万年咬文嚼字/味同嚼蜡31.下列加点的字注音全对的一项是()A.前仆(pū)后继潸(shān)然泪下荫(yìn)庇青冢(zhǒng)B.衣(yī)锦还乡针砭(biǎn)时弊埋(mán)怨绵亘(gèng)C.人心叵(pǒ)测箪食(sì)壶浆慰藉(jì)投奔(bèn)D.爱憎(zēng)分明、淆(xíao)乱乾坤梦魇(yǎn)熨(yùn)帖32.下列词语中加点的字的读音完全相同的一组是()A.问津矜持衣衾棺椁受人钦敬B.奴婢裨益偏裨副将稗官野史C.鞭笞妍媸嗤之以鼻魃魅魑魍D.契机惬意扶老挈幼锲而不舍。
(完整版)高考英语易混易错对比选择题100例

高考易混易错对照选择题100 例分类整理I.冠词① Three years later he turned _______doctor.② Three years later he became______doctor.A. anB. aC.不填D. the①My brother often plays _____football after school.②My brother often plays ______ piano after school.A.不填B. aC. theD. anII.名词及主谓一致①Many students find ______ difficult to learn.②Many students find ______ language difficult to learn.A. EnglishB. an EnglishC. the EnglishD. England①The writer and scientist _______present at the meeting.②The writer and the scientist ________ present at the meeting.A. wereB. wasC. hasD. had①He as well as his brother _____ football now.②He and his brother ______ football now.A. is playingB. is playedC. are playingD. are played①All of the apples ______rotten.②All of the apple ______ rotten.A. areB. isC. have beenD. has been①More than 70 percent of the population of this country _______ peasants.②The population of this country ________ about 13,000,000.A. hasB. haveC. isD. are①Mary used to have______ with her husband before they aparted.②Mary is asking for you. Maybe she will have _____ with you.A. some wordsB. wordsC. the wordD. a word①Mr Brown with his friends _____ of collecting stamps.②Mr Brown and his friends ____ of collecting stamps.A. is fondB. are fondC. fondD. fondsIII.代词①New York is much larger than _______in America.②New York is much larger than _______ in India.A. other cityB. any cityC. all citiesD. any other city①He has two watches, but ______of them works well.②He has two watches, and _____of them work well.A. bothB. noneC. neitherD. either① — Who did you see in the room—_______ .② — How many people did you see in the room—_____ .A. No oneB. NoneC. AnyoneD. Any one① — Do you need a pen—Yes, I need _____.②I bought a pen yesterday. I like _____ very muck.A. thisB. itC. thatD. oneIV. 动词实时态, 语态① The workers ______a new hospital since the end of last year.② The workers ______ a new hospital by the end of last year.A. have builtB. have been buildingC. had builtD. were building①I _____10 dollars on the dictionary.②I _____10 dollars for the dictionary.③The dictionary _____ me 10 dollars.A. tookB. costC. paidD. spent①"You _______ be a bit tired. Why not stop to rest "②"You _____ be so tired.You just started half an hour ago."A. shouldB. can'tC. mustD. mustn't①Jenny ______ have kept her word. I wonder why she changed her mind.②Jenny ______ have kept her word, I wonder why she didn't change her mind.A. mustB. shouldC. needD. would①She ____ early before she came here.②She ____early since she came here.A. used to get upB. has used to get upC. has been used to getting upD. used to getting up.①We had thought what we did ______him.②We had thought that we did_____him.A. satisfyingB. satisfactionC. satisfiedD. satisfy①Mary will _____sure to go there tomorrow.②Mary _____ sure to go there tomorrow.A. areB. beC. isD. does①You _____wait until your father ______ back.②You _____leave until you father____back.A. should⋯comesB. shouldn't⋯will comeC. shouldn't⋯comesD. should①______ come if you have time.②He _____ do it the other day.A. DoB. DoesC. didD. HaveV.非①The little girl had no choice but _______ at home.②The little girl could do nothing but ______ at home.A. to stayB. to stayingC. stayedD. stay①The book is worth_____, I think.②The book is worthy of _____, I think.③The book is worthy_______, I think.A. to be readB. being readC. readingD. read①Our teacher entered the classroom, ______ .②Our teacher entered the classroom, with _____ .A. a book in handB. book in handC. a book in his handD. book in his hand①______many times, so he could understand it.②_____ many times, he couldn't understand it.③______many times, he still couldn't understand it.Having been told B. Having told C. He had been told D. Though he had been told①______ from the top of a twenty-storied building, Wuhan looks very beautiful.②______ these pictures, he couldn't help thinking of those days when he was in Wuhan.A. SeeingB. To seeC. SeenD. Saw ①Thequestion______ atthe meetingyesterday is veryimportant.⋯will come②The question______now at the meeting is very important.③The question_____ tomorrow is very important.A. discussingB. discussedC. being discussedD. to be discussed①Our teacher tried to speak louder in order to made us _____ him.②Our teacher tried to speak louder in order to made herself _____.①Time ______, he shall go outing.②If time _____, he shall go outing.①_____ many times, he has already known how to do it.②_____ many times, but he still didn't know how to do it.A. Having been toldB. He had been toldC. Though he had been toldD. Having told①_____this road and you'll get to the cinema.②_____this road, you'll get to the cinema.①I can't help _____ the work for her because she's too young to do it.②I can't help but _____ the work for her because she's too young to do it.①I forgot_____ her the book. I'll go back to take it.②I forgot _____ her the book, so I went back to take it again.①He had the sick girl_____ to the hospital.②He had the sick girl _____ medicine to the hospital.①_____ many times, but she still didn't know how to do it.②_____ many times, she still didn't know how to do it.A. She was taughtB. Having taughtC. Having been taughtD. She has taught① She is considered ____ the dance hall.② She has considered _____the dance hall so far.A. how to buyingB. to buyC. to have boughtD. buying①_____ in the magazine, I made a decision to read it again.②_____by the magazine, I made a decision to read it.①What_____me most was that nobody was on duty.②What was most ____ to me was that nobody was on duty.①Would you like _____to the film this evening②Do you feel like _____to the film this evening①There were 12 persons in the bus, _____a baby .②There were 12 persons in the bus, a baby _____ .①He was too busy _____his friend.②He was very busy _____ his friend.①The old man entered the room, ______ by his son.②The old man entered the room, ______ his son.A. followB. to followC. followedD. following①The little boy would like _____ her to the cinema.②The little boy would like ______ to the cinema.①My mother went home, and _____ the door open.②My mother went home, _____the door open.①Could you tell me _____to do it tomorrow②Could you tell me ____ to do tomorrow①These professors _____ already to the party are from England.②These professors _____tomorrow to the party are from England.A. being invitedB. having been invitedC. invitedD. to be invited①I'm sorry _____ you so much trouble.②I'm sorry for_____ you so much trouble.A. having givenB. to have been givenC. to have givenD. having been given①Seeing is_____.②To see is_____.①The building _____last year is a new school.②The building ______next year is a new library.①It takes a lot of ____ to build a house.②A new chemical _____will be set up soon.①He couldn't help ______ the housework, for he was busy.②He couldn't help _____ at the news.A. cryB. doC. doingD. cryingVI.介词①She often goes to school _______bike.②She often goes to school _______foot.①Her composition is well written ______some spelling mistakes.②She goes to school every day ______Sunday.A. exceptB. besidesC. besideD. except forVII.从句定语从句 ( 重申句 ,状语从句 , 名词性从句 )①He is one of the students who_______ good at drawing.②He is the only one of the students who_______ good at drawing.A. isB. doesC. areD. do①He lived in the city of Beijing ______there's a theme park.②He lived in the city of Beijing and _____ there's a theme park .A. in thatB. in itC. whereD. wherever①We young people should go _____ we're most needed.②We young people should go to ______ we're most needed.A. the place whichB. whereC. the place whereD. which①Is this bike _____ she lost the day before yesterday②Is this the bike _____ she lost the day before yesterdayA. thatB. whatC. the oneD. it①_____is well known, Hong Kong has been returned to our motherland.②_____is well known that Hong Kong has been returned to our motherland.A. WhichB. AsC. ItD. That①We will never forget the days _______ we spent together.②We will never forget the days_______we worked together.A. thatB. whereC. on whichD. when①Tom got the first place,______ made his parents happy.②Tom got the first place, and _____ made his parents happy.A. asB. whichC. thatD. these①This is the reason ______ you all know.②I really don't know the reason _____ Professor Li didn't attend the meeting.A. whyB. whichC. becauseD. that①He is working hard, _____every one of us can see.②He passed the exam, _____ pleased every one of us.A. asB. itC. thatD. which①Is this park_____he visited the other day②Is this the park _____ he visited the other dayA. in whichB. the oneC.不填D. where①She didn't leave the classroom _____she had finished the homework.②She got to the station ______the bus left.A. tillB. sinceC. whileD. before①The reason _____he couldn't come was that his mother was ill.②It was ____ his mother was ill that he couldn't come.A. asB. becauseC. sinceD. why①She has many novels, some of ________ are interesting.②She has many novels, and some of _______ are interesting.A. thatB. whichC. itD. them①It was in the house _____I saw that young man.②It was the house ______I saw the young man.A. whichB. whatC. thatD. where①This is the factory _____ I worked two years ago.②This is the factory _____ I visited two years ago.A. thatB. whereC. at thatD. what①My mother didn't come back on April 25, _____was my birthday.②My mother didn't come back on April 25, and _____was a pity.A. thatB. whichC. whenD. it①There is something wrong with my watch. _____needs repairing.②There is something wrong with my watch, ______ needs repairing.A. ItB. WhichC. whichD. that名词性从句①______ he said so made us very happy.②______ he said made us very happy.A. WhichB. WhatC. ThatD. it①Do you think _____ John is getting on well with his studies②______ do you think John is getting on with his studiesA. howB. whichC. whatD. that①They don't know _____ he will come unless told.②They don't know ______ he will come until told.A. thatB. whetherC. how longD. if or not①He asked us the question ______ the film was worth seeing.②He made the suggestion ______the meeting should be put off.A. whenB. whereC. thatD. whether①______ studies hard will make greater progress.②_____will come to finish this task hasn't been decided yet.A. WhoB. WhoeverC. WhateverD. No matter who①I'm sure ______ he finished the task on time yesterday.②I'm not sure _____ he will finish the task on time.A. whetherB. whichC. ifD. that①______he said at the meeting surprised us all.②_____ he said nothing at the meeting surprised us all.A. WhatB. WhichC. ThatD. Whether①______ we'll have a meeting tomorrow has been decided.②______ we'll have a meeting tomorrow has not been decided.A. ThatB. IfC. WhetherD. what①Our teacher did ______ he could to help us.②Our teacher did all______ he could to help us.A. whatB. whichC. thatD. whom①Father promised _____I studied harder he would take me to Beijing next summer.②Father promised ____he would take me to Beijing next summer if I studied harder.A. thatB. ifC. that ifD. if that①_____ makes me feel sad seeing you living all alone.②______ makes me feel sad is seeing you living all alone.A. ThatB. ThisC. ItD. What①_____Japan lies east of China is known to all.②I don't know ____ has happened to him now.A. ifB. whatC. thatD. where状语人句①There ______ no buses, we had to walk home.②There _____ no buses, so we had to walk home.A. isB. wereC. areD. being①Study hard ,______you'll succeed.②Study hard, _____ you'll fail.A. unlessB. orC. butD. and①She is ______ good a teacher that we all like her .②She is _____ good teacher that we all like her.A. soB. suchC. such aD. quite a①It is 3 years ______ his brother joined the army.②It is 3 years ago _____ his brother joined the army.③It'll be 3 years _____ he comes backA. sinceB. thatC. afterD. before①It won't be long ______we meet again.②He came soon _____ we had watered the garden.A. tillB. sinceC. afterD. before①_____ hard it may be, I will carry it out.②_____ great progress I have made, there is still a long way to go.A. HowB. HoweverC. WhateverD. What①____ , he could lift the heavy stone②_____, he could not lift the heavy stone.A. Strong as he wasB. So strong as was heC. He was strong enoughD. As he was strong①_____, we had to go home on foot yesterday.②_____, so we had to go home on foot yesterday.A. There being no busesB. Because there being no busesC. There were no busesD. Without any buses①____ he come, what ____ you say to him②_____ he comes, what _____ you say to himA. Should⋯wouldB. When⋯wouldC. If⋯willD. Were to⋯do句型①It's nine o'clock ____ we got to the station.②It's at nine o'clock ____ we got to the station.A. asB. thatC. whenD. while①It was the first class ______ Miss Li taught us _____ we never forget.②It was in the first class _____Miss Li taught us ______we never forget it.A. that; thatB. that; andC. which; thatD. that; whichVIII.反意疑句及其余①He must have lived here for 10 years, ______ he②He must have finished the work yesterday, ______ heA. mustn'tB. haven'tC. didn'tD. hasn't①He needs ______ on.②The doctor needs ____ on him.A. to operateB. being operatedC. operateD. to be operated①He is unfit for the job, ______②He isn't fit for the job, _______A. isn't heB. is heC. doesn't heD. dose he①Let's go at once, ______②Let us go at once, ______A. will youB. shall weC. do youD. does he① —You have bought a new car.— _______ .② — Mary has bought a new car.—______.A. So did IB. So I haveC. So I didD. So have I①I think he must be a good student, ______②She thinks he must be a good student, _______A. mustn't heB. doesn't sheC. don't theyD. isn't heKeys: 84.DB 85.DB 86.AC 87.ABD 88.DC 89.DC 90.DA 91.AC 92.AB 93.CB 94.AB VIII. 95.DC 96.DA 97.AB 98.BA 99.BD 100. DB。
高中高考数学易错易混易忘题分类汇总及解析

高中高考数学易错易混易忘题分类汇总及解析“会而不对,对而不全”一直以来成为制约学生数学成绩提高的重要因素,成为学生挥之不去的痛,如何解决这个问题对决定学生的高考成败起着至关重要的作用。
本文结合笔者的多年高三教学经验精心挑选学生在考试中常见的66个易错、易混、易忘典型题目,这些问题也是高考中的热点和重点,做到力避偏、怪、难,进行精彩剖析并配以近几年的高考试题作为相应练习,一方面让你明确这样的问题在高考中确实存在,另一方面通过作针对性练习帮你识破命题者精心设计的陷阱,以达到授人以渔的目的,助你在高考中乘风破浪,实现自已的理想报负。
【易错点1】忽视空集是任何非空集合的子集导致思维不全面。
例1、 设{}2|8150A x x x =-+=,{}|10B x ax =-=,若A B B =I ,求实数a 组成的集合的子集有多少个?【易错点分析】此题由条件A B B =I 易知B A ⊆,由于空集是任何非空集合的子集,但在解题中极易忽略这种特殊情况而造成求解满足条件的a 值产生漏解现象。
解析:集合A 化简得{}3,5A =,由A B B =I知B A ⊆故(Ⅰ)当B φ=时,即方程10ax -=无解,此时a=0符合已知条件(Ⅱ)当B φ≠时,即方程10ax -=的解为3或5,代入得13a =或15。
综上满足条件的a 组成的集合为110,,35⎧⎫⎨⎬⎩⎭,故其子集共有328=个。
【知识点归类点拔】(1)在应用条件A ∪B =B⇔A ∩B =A⇔AB时,要树立起分类讨论的数学思想,将集合A是空集Φ的情况优先进行讨论.(2)在解答集合问题时,要注意集合的性质“确定性、无序性、互异性”特别是互异性对集合元素的限制。
有时需要进行检验求解的结果是满足集合中元素的这个性质,此外,解题过程中要注意集合语言(数学语言)和自然语言之间的转化如:(){}22,|4A x y x y =+=,()()(){}222,|34B x y x y r =-+-=,其中0r >,若A B φ=I 求r 的取值范围。
广东省东莞市高考物理易错易混100题精粹word含答案

广东省东莞市高考物理易错易混100题精粹word含答案一、解答题1.2017年3月7日上午,韩国国防部发布消息,韩国已部署萨德系统,萨德系统射程可达300千米,可防御半径为200千米,拦截高度可达40~150千米,可防御洲际弹道导弹。
对我国东北和华北大部分地区的安全将构成严重威胁。
我国在一次导弹拦截试验中,一个可视为质点的导弹P质量为100Kg与地面成一定角度从地面发射,计算机描绘出导弹P上升轨迹的一部分如图所示。
A、B、C为轨迹上的三个点,测得AB、BC水平方向距离均为4m,AB竖直方向距离为3.95m,BC竖直方向距离为4.05m,其中B 点纵坐标为,此时计算机立即启动另一质量为200kg的拦截导弹Q。
当导弹P运动到最高点时,与反向水平飞来的导弹Q发生弹性碰撞(设碰撞时间极短),导弹P恰好沿原路径返回。
(设导弹飞行中只受重力,重力加速度为g)。
求:(1)导弹P与导弹Q碰撞前的瞬间导弹P的速度(2)导弹P运动到最高点的坐标(X,Y)(3)导弹P与导弹Q碰撞前的瞬间导弹Q的速度2.草逐渐成为我们浙江一项新兴娱乐活动。
某体验者乘坐滑草车运动过程简化为如图所示,滑草车从A点静止滑下,滑到 B点时速度大小不变而方向变为水平,再滑过一段水平草坪后从 C点水平抛出,最后落在三角形状的草堆上。
已知斜坡 A B与水平面的夹角θ=37° ,长为 x AB=15m,水平草坪 B C 长为 x BC=10m。
从 A点滑到了 B点用时 3s。
该体验者和滑草车的质量 m =60kg,运动过程中看成质点,在斜坡上运动时空气阻力不计。
(sin37°=0.6,cos37°=0.8,重力加速度 g=10m/s2)(1)求滑草车和草坪之间的动摩擦因数;(2)体验者滑到水平草坪时,恰好受到与速度方向相反的水平恒定风的作用,风速大小为 5m/s,已知风的阻力大小 F与风速 v满足经验公式 F=1.2v2。
高中高考数学易错易混易忘题分类汇总及解析

高中高考数学易错易混易忘题分类汇总及解析“会而不对,对而不全”一直以来成为制约学生数学成绩提高的重要因素,成为学生挥之不去的痛,如何解决这个问题对决定学生的高考成败起着至关重要的作用。
本文结合笔者的多年高三教学经验精心挑选学生在考试中常见的66个易错、易混、易忘典型题目,这些问题也是高考中的热点和重点,做到力避偏、怪、难,进行精彩剖析并配以近几年的高考试题作为相应练习,一方面让你明确这样的问题在高考中确实存在,另一方面通过作针对性练习帮你识破命题者精心设计的陷阱,以达到授人以渔的目的,助你在高考中乘风破浪,实现自已的理想报负。
【易错点1】忽视空集是任何非空集合的子集导致思维不全面。
例1、设{}2|8150A x x x =-+=,{}|10B x ax =-=,若A B B = ,求实数a 组成的集合的子集有多少个?【易错点分析】此题由条件A B B = 易知B A ⊆,由于空集是任何非空集合的子集,但在解题中极易忽略这种特殊情况而造成求解满足条件的a 值产生漏解现象。
解析:集合A 化简得{}3,5A =,由A B B = 知B A ⊆故(Ⅰ)当B φ=时,即方程10ax -=无解,此时a=0符合已知条件(Ⅱ)当Bφ≠时,即方程10ax -=的解为3或5,代入得13a=或15。
综上满足条件的a 组成的集合为110,,35⎧⎫⎨⎬⎩⎭,故其子集共有328=个。
AB时,【练1】已知集合{}2|40A x x x =+=、()22|2110B x x a x a =+++-=,若B A ⊆,则实数a 的取值范围是。
答案:1a=或1a ≤-。
【易错点2】求解函数值域或单调区间易忽视定义域优先的原则。
例2、已知()22214y x ++=,求22x y +的取值范围【易错点分析】此题学生很容易只是利用消元的思路将问题转化为关于x 的函数最值求解,但极易忽略x、y 满足()22214y x ++=这个条件中的两个变量的约束关系而造成定义域范围的扩大。
高中高考数学易错易混易忘题分类汇总及解析(精品)

高中高考数学易错易混易忘题分类汇总及解析“会而不对,对而不全”一直以来成为制约学生数学成绩提高的重要因素,成为学生挥之不去的痛,如何解决这个问题对决定学生的高考成败起着至关重要的作用。
本文结合笔者的多年高三教学经验精心挑选学生在考试中常见的66个易错、易混、易忘典型题目,这些问题也是高考中的热点和重点,做到力避偏、怪、难,进行精彩剖析并配以近几年的高考试题作为相应练习,一方面让你明确这样的问题在高考中确实存在,另一方面通过作针对性练习帮你识破命题者精心设计的陷阱,以达到授人以渔的目的,助你在高考中乘风破浪,实现自已的理想报负。
【易错点1】忽视空集是任何非空集合的子集导致思维不全面。
例1、 设{}2|8150A x x x =-+=,{}|10B x ax =-=,若A B B =,求实数a 组成的集合的子集有多少个?【易错点分析】此题由条件A B B =易知B A ⊆,由于空集是任何非空集合的子集,但在解题中极易忽略这种特殊情况而造成求解满足条件的a 值产生漏解现象。
解析:集合A 化简得{}3,5A =,由AB B =知B A ⊆故(Ⅰ)当B φ=时,即方程10ax -=无解,此时a=0符合已知条件(Ⅱ)当B φ≠时,即方程10ax -=的解为3或5,代入得13a =或15。
综上满足条件的a 组成的集合为110,,35⎧⎫⎨⎬⎩⎭,故其子集共有328=个。
【知识点归类点拔】(1)在应用条件A ∪B =B⇔A ∩B =A⇔AB时,要树立起分类讨论的数学思想,将集合A是空集Φ的情况优先进行讨论.(2)在解答集合问题时,要注意集合的性质“确定性、无序性、互异性”特别是互异性对集合元素的限制。
有时需要进行检验求解的结果是满足集合中元素的这个性质,此外,解题过程中要注意集合语言(数学语言)和自然语言之间的转化如:(){}22,|4A x y x y =+=,()()(){}222,|34B x y x y r =-+-=,其中0r >,若A B φ=求r 的取值范围。
高中化学高考学生易错易混错题集(含答案)

实蹲市安分阳光实验学校高中化学高考学生易错、易混错题集(含答案)1.为防止有机物挥发,可加一层水保存,即水封,即能用水封法保存的,又能发生水解和消去反的是A溴乙烷B乙醇C乙酸乙酯D四氯化碳2.各写出一例能实现原子利用率为100%这一原子最经济原则的反方程式:1。
加成反:____________-;2.氧化反:____________3.分子式为C3H6O2三种常见的化合物:(1)若都只含一种官能团它们共有的性质最可能的是与_____发生反(填物质化学式)其中能发生反的最简单同系物能否发生银镜反_____(2)若含两种官能团,则可发生银镜反的同分异构体有_种;满足分子式C7H8O的芳香族化合物的同分异构体中不与氯化铁溶液混合后显紫色和显紫色的种类分别是_________种4.工业上合成丙烯酸有如下三途径:1乙烯与A物质在一条件下脱氢得到2乙炔与A物质在一条件下发生_____反得到3先得到氯乙烯,再与A物质发生____反得到。
A物质的最简式为________,原子利用率最高的为途径____5.关于甲醛的说法不正确的是A常温常压下,为无色液体B发生氧化和还原反所得到的产物均可能发生银镜反C含碳的质量分数为40%D1mol可与足量的银氨溶液产生4mol的银E甲酸某酯、甲酸能发生氧化反。
6.下列反能得到不止一种有机物的是A邻羟基苯甲酸(水杨酸)和碳酸氢钠B 丙烯和溴化氢C3-溴戊烷和氢氧化钠的醇溶液共热D乙醇和浓硫酸加热发生消去反7.制酒精的方法有三种:1.乙烯与水在催化剂条件下2.溴乙烷发生_______反3淀粉水解的产物葡萄糖在酒曲作用下分解。
为了缓解短缺,选方法_______,为了原子利用率最高,选方法_______;乙醇汽油是将乙醇与汽油按一体积比混合而成,若含氧的质量分数为7%,则乙醇的质量分数(取整数)约为_____%8.有机物甲乙丙所含的元素为C、H、F中的两种或三种,所含的电子数均为26,它们都为饱和化合物,甲完全燃烧得到二氧化碳和水,则甲的分子式为_________;它的二氯代物有_种;乙无同分异构体可以证明甲烷的结构为正四面体,则乙的结构简式_________;1mol乙最多能与________molF2发生取代反(2)将甲、乙按物质的量混合,所得混合物的平均摩尔质量于丙的摩尔质量,但丙无同分异构体,则丙的分子式为________9.已知化合物A中各元素的质量分数分别为C37.5%,H4.2%,O58.3%,A的最简式为___________; 0.01molA完全燃烧需要消耗氧气1.01L(标况),则A的分子式为________;表明1不发生银镜反2.1 molA与足量的碳酸氢钠溶液反可放出3molCO23.在浓硫酸催化下,A可与乙酸发生反。
江苏省连云港市高考物理易错易混100题精粹word含答案

江苏省连云港市高考物理易错易混100题精粹word含答案一、解答题1.如图,轨道的水平部分粗糙,竖直的半圆部分光滑,半径R=0.32m。
Q为轨道上最高点、P为最低点、T点与圆心等高。
质量m=2kg的小滑块从水平轨道A点(图中未画出,且AP距离可调节)以v0=6m/s的初速度向右滑行。
己知滑块与水平轨道间的动摩擦因数μ=0.2,g取10m/s2。
(1)求滑块能够通过Q点的最小速度V Q;(2)若滑块恰好能滑到Q点,求滑块从A运动到P的时间t;(3)若滑块在半圆轨道间不脱离轨道,求AP距离的取值范围。
2.如图所示,开口向上竖直放置的内壁光滑绝热气缸,气缸下面有加热装置。
开始时整个装置处于平衡状态,缸内理想气体Ⅰ、Ⅱ两部分高度均为,温度比为。
已知话塞A导热、B绝热,A、B质量均为m、横截面积为S,外界大气强为保持不变,环境温度保持不变。
现对气体Ⅱ缓慢加热,当A上开h时停止加热,求:①此时气体的温度;②若在活塞A上逐渐添加铁砂,当铁砂质量等于m时,气体Ⅰ的高度。
3.如图所示,某种材料制成的扇形透明砖放置在水平桌面上,光源S发出一束平行于桌面的光线从OA 的中点垂直射入透明砖,恰好经过两次全反射后,垂直OB射出,并再次经过光源S,已知光在真空中传播的速率为c,求(1)材料的折射率n;(2)该过程中,光在空气中传播的时间与光在材料中传播的时间之比。
4.某学校召开运动会,买了部分透明材料奖杯,其横截面是以顶点为圆心、圆心角为120° 扇形,如图所示,该校研究性小组的同学想用激光束测量这种奖杯材料的折射率,他们将激光束平行纸面且垂直面射入该材料,入射点为,该激光束恰未从圆弧面射出。
已知,光在真空中传播的速度为。
①求该材料的折射率和光在该材料中的传播速度;②画出该激光束的光路图。
5.如图所示实线是一列简谐横波在t1=0时刻的波形,虚线是这列波在t2=0.5 s时刻的波形,这列波的周期T符合:3T<t2-t1<4T,求:①若波速向右,则波速大小为多少?②若波速大小为74 m/s,波速方向如何?6.如图所示,左端开口右端封闭的U形玻璃管两边粗细不同,粗玻璃管半径为细玻璃管半径的2倍,两管中装入高度差为5cm的水银,左侧封闭气体长9cm,右侧水银面距管口4cm,现将右管口用一与细管接触良好的活塞封闭(图中未画出)并使活塞缓慢推入管中,直到两管水银面等高。
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高考易混易错对比选择题100例分类整理易混句型①The writer and scientist _______present at the meeting.②The writer and the scientist ________ present at the meeting.A. wereB. wasC. hasD. had1.①He has two watches, but ______of them works well.②He has two watches, and _____of them work well.A. bothB. noneC. neitherD. either2.①Jenny ______ have kept her word. I wonder why she changed her mind.②Jenny ______ have kept her word, I wonde r why she didn’t change her mind.A. mustB. shouldC. needD. would3.①______many times, so he could understand it.②_____ many times, he couldn’t understand it.③______many times, he still couldn’t u nderstand it.A.Having been toldB. Having toldC. He had been toldD. Though he had been told57.①The question______ at the meeting yesterday is very important.②The question______now at the meeting is very important.③The question_____ tomorrow is very important.A. discussingB. discussedC. being discussedD. to be discussed58.①I can’t help _____ the work for her because she’s too young to do it.②I can’t help but _____ the work for her because she’s too young to do it.A. doB. didC. doingD. to doing59.①_____ many times, but she still didn’t know how to do it.②_____ many times, she still didn’t know how to do it.A. She was taughtB. Having taughtC. Having been taughtD. She has taught60.①The old man entered the room, ______ by his son.②The old man entered the room, ______ his son.A. followB. to followC. followedD. following57.①Is this bike _____ she lost the day before yesterday?②Is this the bike _____ she lost the day before yesterday?A. thatB. whatC. the oneD. it58.①Is this park_____he visited the other day?②Is this the park _____ he visited the other day?A. in whichB. the oneC. 不填D. where59.①There ______ no buses, we had to walk home.②There _____ no buses, so we had to walk home.A. isB. wereC. areD. beingI. 冠词4.①Three years later he turned _______doctor.②Three years later he became______doctor.A. anB. aC. 不填D. the5.①My brother often plays _____football after school.②My brother often plays ______ piano after school.A. 不填B. aC. theD. anII. 名词及主谓一致6.①Many students find ______ difficult to learn.②Many students find ______ language difficult to learn.A. EnglishB. an EnglishC. the EnglishD. England7.①The writer and scientist _______present at the meeting.②The writer and the scientist ________ present at the meeting.A. wereB. wasC. hasD. had8.①He as well as his brother _____ football now.②He and his brother ______ football now.A. is playingB. is playedC. are playingD. are played9.①All of the apples ______rotten.②All of the apple ______ rotten.A. areB. isC. have beenD. has been10.①More than 70 percent of the population of this country _______ peasants.②The population of this country ________ about 13,000,000.A. hasB. haveC. isD. are11.①Mary used to have______ with her husband before they aparted.②Mary is asking for you. Maybe she will have _____ with you.A. some wordsB. wordsC. the wordD. a word12.①Mr Brown with his friends _____ of collecting stamps.②Mr Brown and his friends ____ of collecting stamps.A. is fondB. are fondC. fondD. fondsIII. 代词13.①New York is much larger than _______in America.②New York is much larger than _______ in India.A. other cityB. any cityC. all citiesD. any other city14.①He has two watches, but ______of them works well.②He has two watches, and _____of them work well.A. bothB. noneC. neitherD. either15.①—Who did you see in the room? —_______ .②— How many people did you see in the room? —_____ .A. No oneB. NoneC. AnyoneD. Any one16.①—Do you need a pen?—Yes, I need _____.②I bought a pen yesterday. I like _____ very muck.A. thisB. itC. thatD. oneIV. 动词及时态、语态17.①The workers ______a new hospital since the end of last year.②The workers ______ a new hospital by the end of last year.A. have builtB. have been buildingC. had builtD. were building18.①I _____10 dollars on the dictionary.②I _____10 dollars for the dictionary.③The dictionary _____ me 10 dollars.A. tookB. costC. paidD. spent19.①“You _______ be a bit tired. Why not stop to rest? ”②“You _____ be so tired.You just started half an hour ago.”A. shouldB. can’tC. mustD. mustn’t20.①Jenny ______ have kept her word. I wonder why she changed her mind.②Jenny ______ have kept her word, I wonder why she didn’t change her mind.A. mustB. shouldC. needD. would21.①She ____ early before she came here.②She ____early since she came here.A. used to get upB. has used to get upC. has been used to getting upD. used to getting up.22.①We had thought what we did ______him.②We had thought that we did_____him.A. satisfyingB. satisfactionC. satisfiedD. satisfy23.①Mary will _____sure to go there tomorrow.②Mary _____ sure to go there tomorrow.A. areB. beC. isD. does24.①You _____wait until your father ______ back.②You _____leave until you father____back.A. should…comesB. shouldn’t…will comeC. shouldn’t…comesD. should…will come25.①______ come if you have time.②He _____ do it the other day.A. DoB. DoesC. didD. HaveV. 非谓语动词类26.①The little girl had no choice but _______ at home.②The little girl could do nothing but ______ at home.A. to stayB. to stayingC. stayedD. stay27.①The book is worth_____, I think.②The book is worthy of _____, I think.③The book is worthy_______, I think.A. to be readB. being readC. readingD. read28.①Our teacher entered the classroom, ______ .②Our teacher entered the classroom, with _____ .A. a book in handB. book in handC. a book in his handD. book in his hand29.①______many times, so he could understand it.②_____ many times, he couldn’t understand it.③______many times, he still couldn’t understand it.B.Having been told B. Having toldC. He had been toldD. Though he had been told57.①______ from the top of a twenty-storied building, Wuhan looks very beautiful.②______ these pictures, he couldn’t help thinking of those days when he was in Wuhan.A. SeeingB. To seeC. SeenD. Saw58.①The question______ at the meeting yesterday is very important.②The question______now at the meeting is very important.③The question_____ tomorrow is very important.A. discussingB. discussedC. being discussedD. to be discussed59.①Our teacher tried to speak louder in order to made us _____ him.②Our teacher tried to speak louder in order to made herself _____.A. to hearB. hearingC. heardD. hear60.①Time ______, he shall go outing.②If time _____, he shall go outing.A. permittedB. permitsC. permittingD. would permit61.①_____ many times, he has already known how to do it.②_____ many times, but he still didn’t know how to do it.A. Having been toldB. He had been toldC. Though he had been toldD. Having told62.①_____this road and you’ll get to the cinema.②_____this road, you’ll get to the cinema.A. To followB. FollowC. If followingD. Following after63.①I can’t help _____ the work for her because she’s too young to do it.②I can’t help but _____ the work for her because she’s too young to do it.A. doB. didC. doingD. to doing64.①I forgot_____ her the book. I’ll go back to take it.②I forgot _____ her the book, so I went back to take it again.A. to returnB. returningC. to return backD. return65.①He had the sick girl_____ to the hospital.②He had the sick girl _____ medicine to the hospital.A. carryB. to carryC. carryingD. carried66.①_____ many times, but she still didn’t know how to do it.②_____ many times, she still didn’t know how to do it.A. She was taughtB. Having taughtC. Having been taughtD. She has taught67.①She is considered ____ the dance hall.②She has considered _____the dance hall so far.A. how to buyingB. to buyC. to have boughtD. buying68.①_____ in the magazine, I made a decision to read it again.②_____by the magazine, I made a decision to read it.A. InterestB. InterestedC. To interestD. Being interested69.①What_____me most was that nobody was on duty.②What was most ____ to me was that nobody was on duty.A. to surpriseB. surprisingC. surprisedD. in surprise70.①Would you like _____to the film this evening?②Do you feel like _____to the film this evening?A. goingB. to goC. goD. gone71.①There were 12 persons in the bus, _____a baby .②There were 12 persons in the bus, a baby _____ .A. to includeB. includingC. includedD. to contain72.①He was too busy _____his friend.②He was very busy _____ his friend.A. in acceptingB. withC. to receiveD. receiving73.①The old man entered the room, ______ by his son.②The old man entered the room, ______ his son.A. followB. to followC. followedD. following74.①The little boy would like _____ her to the cinema.②The little boy would like ______ to the cinema.A. to takeB. takingC. to be takenD. being taken75.①My mother went home, and _____ the door open.。