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小学三年级英语阅读理解专项训练1-40

小学三年级英语阅读理解专项训练1-40

小学三年级英语阅读理解专项训练1-40 Mikeiagoodtudent.Hegetupati某thirtyeveryday.Heliketowearhiblueweater.Hegoetochoolatevenfiftee n.HehaEnglihclaateighto’clock.HelikeEnglihverymuch.Hehalunchath ome.Intheafternoon,healwayplayfootballonthechoolplayground.Hedoe homeworkafterdinner.Hegoetobedatnineo’clock.判断正(T)误(F)()(1)Mikegetupat6:20everyday.()(2)Mikehaablueweater.()(3)Mik ehalunchatchool.()(4)Mikeliketoplayfootball.()(5)Mikedoehomeworkafterchool.(3)TomandJohnaregoodfriend.Tomi12.Johni13.Theyaregoodtudent.The ylikehamburger.MiWhiteitheirEnglihteacher.判断正(T)误(F)()1.TomandJohnaregoodfriend.()2.Tomi12.()3.Johni12.()4.Theyl ikeegg.(4)Hi,mynameiTom.I’m9.IlikeEnglihverymuch.MyiteriAmy.She’5.My fatheri39.Mymotheri37.Theyloveme.Ilovemyfamily.阅读理解并选择合适的选项()1.Mynamei_______.A.AmyB.Tom()2.Myiteri______.A.9B.5()3.Mymothe ri_______.A.39B.37()4.Ilike_______.A.EnglihB.Chinee(5) Ihaveafriend,Kate.She’agirl.She’American.(美国人)Herfatheriateacher.Hermotherianure.(护士)阅读理解并选择合适的选项()1.Kateia_______.A.boyB.girl()2.She’_______.A.AmericanB.China( )3.Herfatheria_______.A.teacherB.nure()4.Hermotheria_______.A.teacherB.nure(6)Hello.I’mTom.I’matthezoo(动物园).Lookatthetiger.Thiiamalltiger.Ithaalongnoe.Who’ingingOh,it’thebirdinthetree.阅读短文,判断正(T)误(F)()1.I’matthezoo.()2.Thiiabigtiger.()3.Ithaalongnoe.()4.Thebirdinthekyiinging.(7)Ihaveapencilbo某.It’blue.Therearelotofthinginit.Ihaveapen.It’redandlong.Ilik eit.Ihavethreepencil.Theyarehort.Ihavearuler.It’big.Ihaveanerae r.It’mall.阅读理解并选择合适的选项()1.Thepencilbo某i_____.A.blueB.red()2.Thepeni______.A.yellowB.red()3.Ihave______ pencil.A.3B.2()4.Thepencilare_______.A.hortB.long()5.Theeraeri_______.A.bigB.mall(8)Ihaveacat.Itialovely(可爱的)cat.HernameiDongdong.Herfur(毛)iblackandwhite.Sheimybetfriend.Ilikeherverymuch.Ioftentelltorie (故事)toher.根据短文内容判断正(T),误(F)()1.Ihaveadog.()2.HernameiTom.()3.Sheimybet friend.()4.Idon’tlik eher.()5.Ioftentelltorietoher.(9)1.Igetupat______everyday.2.Idomyhomeworkat______.3.IwatchTVat______.4.Igohoppingat______.5.Igotobedat_______.(10)I'mDaming.IliveinChina.Ilikewimming,readingbook,cooking(烹饪),watchingTV,liteningtomuicandridingbike(骑车).Tellmeomethingaboutyou:what'yourhobby(爱好)判断正误,正(T),误(F)()1.I’mLingling.()2.IliveinAmerica.()3.Ilikewimming.()4.Idon’tlikewatchingTV.(11)判断正误,正(√),误(某)()1.Idonotlikeanimal.()2.WehaveadognamedMili.()3.Mymotherlikecat.()4.Ilikecat,too.()5.IdonotlikeMili.(12)Tom:Look.I’mhortandfat.Jerry:Ha,ha!I’mhortandfat,too.Tom:H owoldareyou?Jerry:I’mnine.HowaboutyouTom:I’meight.判断对错,正(√),误(某)()1.Tomihortandfat.()2.Jerryithin.()3.Tomieight.()4..Jerryinine.(13)GaoWei:Hello!Kate:1GaoWei:Myname’GaoWei.Kate:2GaoWei:3Kate:Gladtomeetyou,too.选词填空,把对话补充完整()1.A.Hi!B.Goodmorning!()2..A.Myname’Kate.B.I’mGaoWei.()3.A.HowareyouB.Gladtomeetyou.(14)LiYan:Hello,Peter.Ithi1pencilPeter:2,itin’t.Maybe(可能)it’Tom’.LiYan:Hello,Tom.IthiyourpencilTom:Ye.Thank3.LiYan:T hat’4.选词填空(请注意在横线上填A或B序号)1.A.youB.your2.A.Ye.B.No.3.A.youB.your4.A.OKB.ok(15)Hi,myfriend!Thiimyroom.It’verymall.Thewall(墙)areyellow.Thedooripink.Thewindowiorange.Thedekipurple.Thereiapic tureonthewall.Ilikeitverymuch.根据你所看到的短文内容填写单词1.Thewindow_______green.2.Thewallare_________.3.Thiimy_________.(16)根据短文判断对(T)错(F)()1.Hehamalleye.Amy:Sam,Let’gotochool.Sam:OK.Let’go.Butwhere’mypencil-bo某Amy:Whatcolouriyourpencil-bo某Sam:Blueandwhite.Amy:Look!It’overthere,onthedek.Sam:Thankyou.根据短文判断对(T)错(F)()1.SamandTomgotochool.()2.Samhaablueandwhitepencil-bo某.()3.Thepencil-bo某ionthedek.(18)Sam:Thiimybrother.Amy:What’hinameSam:HinameiBob.Amy:Hi,Bob. Nicetomeetyou.Bob:Nicetomeetyou,too.Amy:Howoldareyou?Bob:I’mfive.阅读理解并选择合适的选项1.BobiSam’_________.A.iterB.brother2.Bobia__________A.boyB.girl3.Bobi______yearold.A.threeB.five.(19)Myfavouriteport(运动)ibaketball.Ilikebaketball.Somyfriendliketoplaybaketballwithme .Soweareveryhappy.Doyouliketoplaybaketball阅读短文,判断下列句子正(T)误(F)()1.Myfavouriteportifootball.()2.Iplaybaketballverywell.()3.M yfrienddon’tliketoplaywithme.(20)Lucy:Hi,Andy.Ihaveatoy(玩具)car.Andy:ReallyWhatcolouriitLucy:White.Andy:Good.Ihaveatoybu.It’yellow.Lucy:Let’playtogether.OKAn dy:Goodidea.判断下列句子正(√)误(某)()1.Andyhaatoycar.()2.Andy’toybuiyellow.()3.Lucyhaatoycar.( )4.Lucy’toycariwhite.(21)Lookatthephoto.Themaninitimyuncle.HeiMrLi.Heworkinourchool.H eteache(教)uEnglih.Thewomanihiwife(妻子).She’adoctor.根据短文填空1.The_____initimyuncle.2.HeiMr____.3.Heworkinour____.4.Hetea cheu_____.5.Thewomanihi_____.(22)Ihavemanytoy.Myfavourite(最喜欢的)toyiadoll.Itiverynice.Itharedhair.Ithabigeyeandamallmouth.Itw ear(穿)agreendre.Igotoleep(睡觉)withiteverynight.Ilikeitverymuch.判断下列句子正(√)误(某)()1.Ihaveatoy.()2.Myfavouritetoyiadoll.()3.Ithayellowhair.()4.Itwearagreen dre.()5.Idon’tlikeit.(23)Hi,I’mPeter.I’mapupil.I’mtenyearold.Ioftengowimmingatthew eekend(周末).IhaveChineeandMathatchooltoday.Ihaveabrother,Ben.H e’eight.Heoftengoewimmingattheweekend.He haPE,MuicandChineetoday.Wearehappyatchool.判断下列句子正(T)误(F)()1.Peterii某yearold.()2.Peteroftengoewimmingattheweekend.()3.PeterhaMath,Muicand Chineetoday.()4.Benoftengoewimmingattheweekend.()5.Thereiawindow nearthepiano.(24)TomandJohnaregoodfriend.Tomitwelve(12)yearold.Johnithirteen(13)yearold.Theyaregoodtudent(学生).Theyliketoeathamburger.MiWhiteitheir(他们的)Englihteacher.Shelikethemverymuch.判断下列句子正(T)误(F)()1.TomandJohnaregoodfriend.()2.Tomitwelveyearold.()3.Johnit welveyearold.()4.Tomliketoeathamburger.()5.MiWhitethink(认为)theyaregoodtudent.MynameiSuan.Todayimybirthday(生日).Myfriendgive(给)meatoyplane,atoytrainandatoyhip.Mymumgiveme abigyellowball,mydadgivemeateddybear(玩具熊)andamalldoll.Wedanceanding(又唱又跳).Whatahappyday!判断下列句子正(T)误(F)()1.TodayiSuan'birthday.()2.Suan'mumgiveherabigcake.()3.Suan'friendgiveherabigdoll.()4.Suan'dadgiveherateddybearandamalldoll.()5.Theydanceanding.(26)TodayiSunday(星期天).OnSunday,Iuually(通常)playthepiano.Mymotheruuallycleanthehoue(房子).Myfatheruuallyreadthenewpaper(报纸).Myiteruuallyreadtory-book(故事书).根据文章内容判断对(T)错(F)()1.Iuuallyreadthenewpaper.()2.Myiteruuallyreadtory-book.()3.Mymotheruuallyplaythepiano.(27)It’aunny(晴朗的)day.LiYanandIgotothezoo.Weeemanyanimal(动物).WhatiitOh,atiger.Look,thelionareunderthetree.Thebirdareinth enet(窝).Thezooiveryclean(干净的).Wecannoteemoquitoe(蚊子).根据短文判断对(T)错(F)()1.LiYanandIgotothezoo.()2.Themonkeyareunderthetree.()3.Wecanee moquitoeatthezoo.(28)Thiiaphotoofmyfamily.Look,theboyime.Myiterine某tto(在…旁边)me.Theoldmanimygrandpa,theoldwomanimygrandma.Myfatheriadoctor.MymotherianEnglihteacher,helovehertudent.阅读理解并选择合适的选项()1.Whoine某tto(在…旁边)meA.Mymother.B.Myiter.()2.Myfatheria_______.A.teacher.B.doctor()3.Mymotheria_______.A.teacher.B.doctor(29)cloud(云)arewhite.Thetreearegreen.Theflower(花)areyellow.Thebiglake(湖)iblue.Thereiapurplebikeunderatree.Somechildren arerowingaboat(划船)onthelake.根据短文填词1.Theuni________.2.Thetreeare________.3.The_______iblue.4.Thereiapurple________underatree.5.Somechildrenare______abo atonthelake.(30)Ihaveahappyfamily(家庭).Myfatheriapoliceman(警察).Heitall.Heliketoplaybaketball(篮球).Mymotheriateacher.SheliketowatchTVandreadbook.Iamatudent.Ia maboy.Iamhort.Weliketoeatnoodle(面条).Weareahappyfamily.阅读理解,判断对(T)错(F)()1.Myfatheriateacher.()2.Mymotheriapoliceman.()3.Myfatheritall.()4.Myfatherliketoplayfootball.()5.Iamatudent.Iamagirl.()6.I amhort.(31)()1.Dalianiamallcity.()2.Theroadarewide(宽的).()3.Itineartheea.()4.Theeaiblue.()5.Manypeoplelikewimmingintheea.(32)Hello!MynameiSunWei.HereianAmericanboy.HinameiDavidSmith.Hei twelve.AndIamtwelve,too.DavidiinClaThree,GradeOne.IaminClaThree, GradeOne,too.HeiNumberEight,RowFive.IamNumberFive,RowFour.()1.Da vidian()boy.A.EnglihB.AmericanC.Chinee()2.Hei()A.tenB.elevenC.twelve()3.SunWeii()ClaThree,GradeOne.A.inB.on C.of()4.DavidiinRow().A.FourB.FiveC.One()5.SunWeiiNumber().A.Fou rB.FiveC.Eight(33)MynameiJimGreen.Iamtwelve.Thatimymother.Sheiateacher.Thatimyfather.HinameiJeffGreen.Heiateacher,too.HeianEnglihte acher.Thatimyiter,Kate.Sheieight.ThiiPolly.Itiabird.Itiaparrot.()1.JimGreenieleven.()2.Himotheriteacher.()3.HifatheriaChineeteacher.()4.Hiiteritwelve.()5.Hehaabird.(34)VanandTedaretwinbrother.Theylooktheame.TheyareEnglih.Theyare eleven.TheyareinNo.15MiddleSchool.TheyarenewtudentinClaOne,Grade One.VanitinRowOne.TeditinRowThree.()1.VanandTedareA.twinbrotherB.twinbrotherC.twinbrother()2.Theyare().A.EnglihB.AmericanC.Chinee()3.Theyare.A.tenB.elevenC.twelve()4.Theyare()tudent.A.newB.oldC.good()5.TeditinRow().A.threeB.fourC.Five(35)MynameiMary.Iameleven.Tedimybrother.Heithirteen.Weareintheam echool.Mymotheriateacher.Sheiateacherinourchool.Myfatheriateache r,too.HeiaChineeteacherinacollege.Ihaveacat.ItnameiMiaomiao.Itiw hite.Itianicecat.Wearegoodfriend.()1.Iamtwelve.()2.TediMary’brother.()3.TedandIareintheamecla.()4.Myparentareteacher.()5.Ihaveacat.(36)ThiiaChineegird.HernameiWuYan.Sheianewtudent.SheiinYuyingMid dleSchool.SheiinClaOne,GradeTwo.BillianAmericanboy.Heieleven.Hei YuyingMiddleSchool,iitheirPEteacher.Sheiagoodteacher.()1. WuYani().A.aChineegirlB.anAmericangirlC.anEnglihgirl()2.Sheia()tudent.A.goodB.newC.old()3.Billi().A.aChineegirlB.anAmericanboyC.agoodboy()4.TheirPE()iMiLi.A.friendB.teacherC.tudent()iiagood().A.teacherB.tudentC.boy(37)Thiimyfriend,Jim.HeianEnglihboy.Heitwelve.HeiinClaThree,Grad eOne.HeiNumberTwoinRowFive.MynameiDongCheng.IamaChineeboy.Iamtwe lve,too.IaminClaOne.IamNumberOneinRowOne.(T/F):()1.JimianAmericanboy.()2.DongChengianEnglihboy.()3.JimiinCl aThree,GradeOne.()4.DongChengiNumberOneinRowOne.()5.DongChengand Jimarebrother.(38)MynameiGaoPing.MyEnglihteacheriJulia.SheifromEngland.Shehatw ochildren,aonandadaughter.HerdaughteriBetty.HeroniDick.Juliaandh erdaughterareinChina,butherhubandPaulSmithiinEngland.HeroniinAme rica.Pauliapoliceman.Dickiacollegetudent.BettyandIareintheamecho ol.Weareclamate,andwearegoodfriend.IteachherChineeandheteachemeE nglih.()1.JuliaandPaulareBetty’().A.teacherB.tudentC.parent()2.Dick’()imygoodfriend.A.fatherB.motherC.iter()3.DickandBettyare().A.iterandbrotherB.iterandbrotherC.iterandbrother()4.Betty’fatheria()inEngland.A.teacherB.policemanC.worker( )5.Paul’wifeia()inChina.A.teacherB.workerC.houewife(39) Betty:(Knockingatthedoor)MrHan:WhoiitGoandee,Meimei.HanMei:Oh,it’you,Betty.Gladtoeey ou.()1.Bettyiknockingatthedoor.()2.MrHanopenthedoor.()3.ThiiMei mei’home.()4.Everyonein’tin.()5.Theirfrien dareatHanMei’home.(40)JaneWhiteianAmericangirl.Sheififteen.Sheiamiddlechooltudent. HefatheriBillWhiteandhermotheriJoanWhite.Hebrother,Bob,iatudent, too.HeiinablackcoatandJaneiinaredweater.1.JaneWhitei_______Ameri cangirl.2.Shei_______yearold.3.Hebrotheria_______.4.Jane’weater i_______.5.Bob’coati_______.。

部编版2020年中考语文必读名著突破 专题04 七下名著阅读《海底两万里》(解析版)

部编版2020年中考语文必读名著突破 专题04 七下名著阅读《海底两万里》(解析版)

专题04 七下名著阅读《海底两万里》(解析版)专项训练卷·一计划用时:18分钟题量:3题满分:13分实际用时:测试人:得分:1、名著阅读。

本学期大家阅读了《海底两万里》这部名著,请你用心完成下列问题:(1)《海底两万里》的作者是___ _国的____ __,他被誉为___ ___之父。

(3分)(2)《海底两万里》中的潜艇叫__ ____。

(1分)(3)尼摩船长说了一句话来形容人类的进步:“______ ____”。

(1分)【答案】(1)法儒勒·凡尔纳现代科学幻想小说(2)鹦鹉螺号(3)人类进步得实在是太慢了【解析】此题对名著《海底两万里》阅读的考查。

在阅读名著时要重点掌握以下内容:①作者:姓名、国籍(朝代)、主要作品、成就等。

②作品内容:主要内容、主要人物、故事情节等。

③作品主题及现实意义。

本题解答依据自己对《海底两万里》这部作品的了解和识记的常识知识作答即可。

儒勒•凡尔纳是19世纪法国著名的科幻小说和冒险小说作家,被誉为“现代科学幻想小说之父”和“科学时代的预言家”。

曾写过《海底两万里》《地心游记》等著名科幻小说。

《海底两万里》的故事并不复杂,主要讲述“鹦鹉螺号”(诺第留斯号)的故事。

1866年,有人以为在海上见到了一条独角鲸,出于对航海安全的考虑,也是在公众的呼吁下,由美国派遣了亚伯拉罕•林肯号对“海怪”进行追逐。

法国生物学家彼埃尔•阿龙纳斯教授受邀参加了这次追逐行动。

结果,追逐怪物的战舰反被怪物追逐,并遭到“海怪”的凶猛袭击。

阿龙纳斯教授和他的仆人康塞尔,以及一名捕鲸手尼德•兰落水,被“海怪”所救,此后便被尼摩船长囚禁在这艘神秘的潜艇中,之后便开始了海底两万里的环球旅行,并发现这是一艘名为“鹦鹉螺号”的潜艇。

最后,他们设法逃走,重回陆地。

2、根据对名著《海底两万里》的阅读回答下面的问题。

(1)右图为《海底两万里》的插图,图画表现的是哪个情节? (1分)【答案】海底漫步(海底打猎)(2)图中的四个人是谁? (2分)【答案】尼摩船长、阿龙纳斯教授、康赛尔、尼摩船长的一个同伴。

2021年三年级上册数学 解决问题专项训练(一)

2021年三年级上册数学 解决问题专项训练(一)

一、时间的计算1、一集动画片从8时20分开始播出,8时45分结束。

一共播出了多长时间?2、联欢晚会7:20分开始,演出2小时30分结束,结束时间是几时几分?3、光明小学下午3时30分放学,小明3时45分到家,小刚3时50分到家。

他们谁先到家,早到多长时间?4、从南京到上海的火车15:30到达,可是晚点了15分钟,火车什么时候能到?5、刘老师买了早上9:00出发回家的票,可是从家到学校要走35分钟,刘老师至少要几点从家里出发?6、兰兰做一道应用题需要3分钟,她从下午5:00开始做,一共要做8道题,那么她什么时候能做完?7、爷爷今天下午6:10出去散步,比昨天提前了20分钟,爷爷昨天什么时候去散步的?8、一辆客车平均每小时行驶50千米,小红早上8:00乘坐这辆客车去外婆家,中午11:00到,小红家到奶奶家有多少千米?9、小明每两分钟可以做1朵花,他从上午9:15做到9:31,一共可以做几朵花?10、同学们去博物馆参观,要坐45分钟的车,他们8:30分准时到达,请问他们是什么时候出发的?二、万以内数加减法1、小马虎在计算加法的时候不小心把其中一个加数56看做65计算,得到的结果为254。

如果他没看错,正确结果应该是多少?2、北京到沈阳飞机票700元,动车票218元,从北京到沈阳,坐动车比坐飞机大约便宜多少钱?3、电风扇245元,电饭煲187元,妈妈有400元,买这两件商品够吗?(用估算方法)4、上半场比赛结束28比43,一队28分,2队43分, 2队领先多少分?5、全场比赛结束45比67.,2队67分,1队45分,下半场2队得了多少分?6、中央广播电视塔高405米,东方明珠广播电视塔高468米,广州塔高600米,广州塔比中央广播电视塔大约高几百米?你能提出其他数学问题并解答吗?7、小明家、小芳家和学校在同一条街上,小芳到学校245米,小明离学校390米,小明家和小芳家相距多少米?8、一根绳子长680米,先用去180米,又用去200米,这根绳子比原来短了多少米?9、小花有一本书,第一天看了176页,第二天看了183页,剩下的第三天看完。

专题3两三位数除以一位数-2023-2024学年三年级上册数学计算大通关专项训练(答案解析)

专题3两三位数除以一位数-2023-2024学年三年级上册数学计算大通关专项训练(答案解析)

专题3 两、三位数除以一位数20232024学年三年级上册数学计算大通关配套专项训练答案解析 1.744;1040;2700;26;128……1;75【分析】两、三位数乘一位数的竖式计算:从个位起,用一位数依次乘两、三位数每一位上的数,与哪一位上的数相乘,乘得的结果就和那一位对齐,当乘数末尾有0时,可先不让0参与计算,最后将0的个数补在积的末尾处即可;除数是一位数的除法法则:从被除数的高位除起,每次用除数先试除被除数的前一位,如果它比除数小,再试除前两位数;除到被除数的哪一位,就把商写在那一位上面;每求出一位商,余下的数必须比除数小。

【详解】938⨯=744 2085⨯=1040 4506⨯=2700783÷=26 5134÷=128……1 6759÷=752.1092;2030;280873;121;102 (4)【分析】三位数乘一位数的竖式计算:从个位起,用一位数依次乘三位数每一位上的数,与哪一位上的数相乘,乘得的结果就和那一位对齐,当乘数末尾有0时,可先不让0参与计算,最后将0的个数补在积的末尾处即可。

三位数除以一位数的竖式计算:三位数除以一位数时,应先从最高位除起,最高位不够除时,就用前两位数除,除到哪一位,商就写到哪一位,余下的数必须比除数小;没有余数除法的验算方法是:被除数=商×除数,有余数除法的验算方法是:被除数=商×除数+余数。

【详解】156×7=1092 406×5=2030 4×702=2802 438÷6=73*605÷5=121 *820÷8=102 (4)验算:验算:3.632;128;2061456;1710;70 (6)【分析】两、三位数乘一位数,从个位起,用一位数依次乘两、三位数的每一位数,哪一位上乘得的积满几十就向前一位进几,当乘数末尾有零时,先算零前面的数,再在积的末尾添加对应个数的零。

部编版八年级上册英语Unit3 单项选择专项训练 试题试卷含答案解析(1)

部编版八年级上册英语Unit3 单项选择专项训练 试题试卷含答案解析(1)

Unit3单项选择专项训练()31.His parents flew to Hong Kong____a sunny Sunday.A.inB.onC.atD.to()32.Jim is tall,but his sisters,Mary and Kathy,______short.A.are bothB.all areC.are allD.both are()33.I am______taller than my brotherA.veryB.tooC.moreD.a little()34.–Do you enjoy_____in this city?---Yes,I do.A.to liveB.livingC.livedD.to living()35._______you free tomorrow afternoon?A.DoB.AmC.IsD.Are()36.The teacher asked______students to answer the question.A two moreB more twoC two anotherD more some ()37.I like to stay with children______are active.A whichB whoseC whatD who()38._______the books in the bookcase,Jerry.A.PuttingB.To putC.PutD.Puts()39.There_______lots of popcorn in the kitchen last night.A.wereB.hadC.areD.was()40.Do you have________to say about this?A.something elseB.anything elseC.else somethingD.else anything()41.He had to help his parents__________on the farm on weekends.A.workB.workingC.worksD.worked()42.What_________the matter with your little dog yesterday evening?A.isB.wasC.areD.were()43.The woman wants to find a job________a babysitter.A.likeB.forC.asD.in()44.That book is not so______as this one.A.interestingB.more interestingC.most interestingD.the most interesting()45.She has a pen in one of her hands,but what's that in her______hand?A.oneB.anotherC.the otherD.other()46.Would you like____cup of tea?A.otherB.the otherC.anotherD.the one()47.My shoes are cheaper than_____.A.youB.yourC.yoursD.your one()48.I don’t like green apples.I like red______.A.thisB.thatC.oneD.ones()49.This classroom is__________than that one.A.many bigB.much bigC.many biggerD.much bigger()50.Do you look_______Tom?A.the same asB.same asC.the sameD.the same so()51.—What is Anna like?—She is________outgoing girl and she likes talking with others.A.a B.an C.the D./()52.______me,a good friend likes to do the same things __________me.A.For,of B.For,as C.As,to D.As,for()53.Dona is________to her mother in many ways.For example,they are both tall and thin.A.different B.kind C.friendly D.similar()54.—How about these two sweaters?—I like them.________of them look good on me.A.All B.Any C.Both D.Each()55.—What about this music?—________it is not very popular,I enjoy it.A.If B.When C.Because D.Though()56.—There is only one bedroom.I think you two have to________.—We don't care about it.A.get B.arrive C.share D.try()57.—________is bigger,the white one or the black one?—The black one,I think.A.Which B.What C.Where D.How()58.Our English teacher is very funny.He often makes us ______________in his class.A.watch B.laugh C.laughing D.cry()59.—Why are you so happy,Mona?—Our class________the volleyball match just now.A.agreed B.won C.lost D.joined()60.We should________our classmates because they are our friends.A.care about B.laugh at C.look like D.shout at()61.—What do you think of Tara?—She is________than Isabel.A.much outgoing B.outgoingC.much more outgoing D.more much outgoing()62.Tom is13years old.Julie is13years old,too.So Julie is________Tom.A.older than B.younger thanC.so old D.as old as()63.—________should get the job,Tom or Jim?—I think Tom should get the job.A.Do you think whose B.Do you think whichC.Who do you think D.Do you think who()64.My pictures are more beautiful than________.A.she B.she's C.her D.hers()65.The two girls________like children.They are good________ children.A.both,with B.all,to C.some,for D.any,at参考答案31-35BADBA36-40ADCDB41-45ABCAD46-50CCDDA51-55BBDCD56-60 CABBA61-65CDCDA。

统编版小学语文三升四暑假衔接阅读专项训练一课外阅读一 有答案

统编版小学语文三升四暑假衔接阅读专项训练一课外阅读一 有答案

统编版小学语文三升四暑假衔接阅读专项训练一课外阅读一一、阅读雪地上的脚印①6岁那年,他被诊断为重症肌无力。

从此,他的生活变得不同于正常人。

②9岁那年冬天的一个下午,天气骤变,下起了大雪。

到了放学时,路上已是厚厚的一层雪,很多家长已赶到学校来接孩子。

③他想,自己腿脚不方便,雪又这么大,爸爸妈妈一定会来接他的。

④但是等了好久,他都没见到自己的爸爸妈妈。

他的焦急变成了伤心。

他的眼泪从面颊(jiá)流了下来。

终于,他吸了一口气,咬了咬牙,迎着暮色,踏上了回家的路。

这一段路走得实在艰难,不知摔了多少次跟头,也不知走了多长时间,委屈、恐慌和愤怒交织在一起。

此时,他对自己的爸爸妈妈失望极了。

⑤终于,他到了家门口,让他没想到的是,眼含热泪的爸爸急忙跑过来为他开了门。

随后,他那掩面痛哭的妈妈一下子扑上来,紧紧地抱住了他。

一家三口哭成一团。

⑥许久,哭红眼睛的妈妈无比爱怜地摸着他的头,对他说:“孩子,你回头看一看,那路上的每一个脚印都是你自己走的。

爸爸妈妈真为你骄傲!在你以后的生活中,肯定会遇到许多困难。

如果都能像今天这样顽强地走过来,那你将永远是爸爸妈妈心中最有出息的孩子,最棒的男子汉!”⑦父母的爱,有时像一杯茶,初品时,是苦的,但回味却是甜的。

1.第④自然段中画横线的句子属于__________(动作、神态、心理)描写。

联系上下文想一想,从这些句子中你体会到了什么。

___________________________________________________________________ _____________________2.从文中找出表现文章中心的一句话,用波浪线画出。

3.“每一个脚印都是你自己走的。

”对这句话理解正确的一项是()A.因为没有人陪伴,所以每个人都要自己走。

B.要敢于独自面对每一个困难,努力去战胜它。

C.面对人生,我们要走出与众不同的道路。

4.第⑤自然段中,妈妈“掩面痛哭”表现了她怎样的内心情感?()A.为儿子迈出独自面对困难的第一步而欣慰。

人教版四年级数学下册第三单元 简便运算 专项训练【含答案】

人教版四年级数学下册第三单元  简便运算 专项训练【含答案】

人教版四年级数学下册第三单元简便运算专项训练一、计算题(共33题;共395分)1.直接写出得数。

34+27+16= 18+55+45= 25×13×4=(8+4)×5= 19×6+11×6= 36×64+36×36=2.脱式计算,标*的题要用运算律简算.(1)[192÷(96-72)]×28 (2)*257+396+43(3)*136×25×4 (4)*78×102-78×23.用简便方法计算。

(1)347-(247+75)(2)48-25-75+152 (3)57+138+434.脱式计算,能简算的要简算。

①36×64+36×36 ②125×4×8×25③(927-583)÷43×75④12×999⑤88×125⑥15×[(825-153)÷21]5.计算下面各题,能简算的要简算。

(1)230×[84÷(240-228)] (2)340-240÷20×5 (3)32×17×25×125 (4)136×68-68×366.下面各题怎样简便就怎样算。

(1)307-98 (2)145+39+161+55(3)540÷30×140 (4)275-400÷167.用自己喜欢的方法计算。

(1)102×36 (2)383+468+17+132(3)165÷[3×(47-42)] (4)98+360÷(30-26)8.简便计算。

(1)8×(125×23)(2)143×52-52×43 (3)202×369.用递等式计算,能简算的就简算。

三年级数学应用题专项训练(1)-精品.doc

三年级数学应用题专项训练(1)-精品.doc

三年级数学上册应用题专题训练(1)1.一个果园里栽了125棵苹果树,梨树的棵数比苹果树的4倍少20棵。这个果园一共栽了多少棵树?2.一段路长324米,已经修了240米,剩下的计划4小时修完。平均每小时修多少米?3. 红光印刷厂装订一批日记本,前三天共装订了960本,后16天平均每天装订420本。这批日记本共有多少本?4.一个打字员4分钟输入200个汉字。照这样计算,输入3000个汉字需要多少分钟?5. 3袋面粉共重75千克,8袋面粉重多少千克?6.一个钢铁厂,炼750千克钢需要用5吨水。照这样计算,钢铁厂一天节约55吨生活用水,可以炼钢多少千克?7.5箱蜜蜂一年可以酿375千克蜂蜜。照这样计算,19箱蜜蜂一年可以酿多少千克蜂蜜?一年要酿1725千克蜂蜜需要养多少箱蜜蜂?8.两个年级的同学去买书,三年级有48人,每人买2本,四年级每人买3本,四年级买的总本数和三年级一样多。四年级一共有多少人买书?9.工人们修马路,原计划用40个工人,实际用了45个工人。计划要修路90天,实际修了多少天?10.小华从学校步行回家要20分,骑自行车回家要10分。小华步行每分走45米,他骑自行车每分行多少米?11.学校买15盒彩色粉笔,每盒50枝,用去10盒。还剩多少枝没有用?12.海天机械厂第一,二,三车间各生产了6箱零件,每箱120个,一共生产零件多少个?13.一台织布机一小时织布21米,5小时4台同样的织布机共织布多少米?14.汽车从南京开往上海,每小时行60千米,3小时行了全程的一半。因车上一人生病,剩下的路程要2小时行完。平均每小时要行多少千米?15.刘师傅23天共加工4255个零件,王师傅平均每天比刘师傅多加工18个。王师傅每天加工零件多少个?16.李伯伯家的一头牛,10天吃草50千克。照这样计算,有155千克草够这头牛吃多少天?17.湖滨公园有18条游船,每天收入1008元。照这样计算,现在有26条游船,每天增加收入多少元?18.工厂要加工360个零件,小王5天可做完,用这样的速度,做8天能加工多少个零件?19.明明看一本故事书,每天看20页,5天看了这本书的一半。这本书一共有多少页?20.老师买6枝钢笔,钢笔的价钱是圆珠笔的3倍,一枝圆珠笔的价钱是2元。老师买钢笔用了多少元?21.农机厂一车间分3个组加工3420个零件,每组12个工人。平均每个工人加工多少个零件?(用两种方法解)22.工厂租用10辆汽车运480吨货,每辆汽车都运了12次。平均每辆车每次运货多少吨?23.啄木鸟一天能吃645只害虫,青蛙8天能吃608只害虫。啄木鸟每天比青蛙多吃害虫多少只?24.一堆煤160吨,4辆卡车3次运96吨。照这样计算,4辆卡车几次才能运完这堆煤?25.工程队铺一条路,计划每天铺90米,20天可以铺完。实际只用了18天,平均每天铺多少米?26.强强8岁时,他父亲32岁。当父亲的年龄是强强的2倍时,父亲多少岁?27.某校三年级有4个班,共为残疾人捐款576元,平均每人捐3元,平均每班有多少人?28.修一段长324米的路,前8小时共修了240米,剩下的每小时修21米,还要几小时才能修完?29.订一份电视节目报半年需要15元,张叔叔想订阅三个季度的电视节目报,需要多少钱?有线电视收视维护每月16元,全年要多少钱?30.一堆煤,计划每天烧45千克,可以烧32天,由于节省用煤,实际烧了36天,实际每天烧煤多少千克?31.学校买5盒羽毛球,每盒12只。用去20只,还剩下多少只?32.学校买3个篮球,共花了96元;又买一个足球,花了40元。买一个篮球和一个足球需要多少元?两种球的单价相差多少元?33.王霞买一本140页的故事书,已经看了86页。剩下的计划6天看完,每天要看多少页?34.一把椅子的价钱是25元,一张桌子的价钱是一把椅子的3倍。买一把椅子和一张桌子共用多少元?35.班里图书角有58本故事书、34本科普读物。要放在一个4层的书架上,平均每层要放多少本书?36.李丽和王敏同时做纸鹤,李丽每小时做12只,王敏每小时做14只,做了3小时,两个人一共做了多少只纸鹤?37.同学们参加爬山比赛,女同学分成了4组,每组有15人。参赛的男同学有76名,一共有多少名同学参加爬山比赛?38.王大伯进县城卖了9只兔子,每只22元。还卖1只羊,得160元。(1)王大伯的兔子和羊一共卖了多少钱?(2)王大伯用卖兔子和羊的钱买了4瓶农药,每瓶13元。王大伯还剩多少钱?39.一桶3g的油42元,一桶5g的油65元,哪种瓶装的油便宜?40.一件上衣65元,一条裤子28元。(1)买4件上衣比4条裤子多花多少钱?(2)用150元钱买2套衣服,够吗?41.有两根铁丝,第一根长35米,第二根的长度比第一根的4倍多2米。第二根长多少米?42.修路队修一条长1500米的公路,已经修好了300米,剩下的要在6天修完,平均每天要修多少米?43.运动场跑道一圈是400米,王叔叔每天坚持跑2圈半。他每天跑多少米?44.小丽走一步长约5分米,她从家到学校一共走了540步,算一算,她家到学校大约有多少米?45.兰兰身高134厘米,东东比兰兰高5厘米。东东身高是多少厘米?46.红领巾小学三年级有男生257人,女生235人,已经体检身体的有387人,没有体检的有多少人?47.图书室借出456本图书,还剩207本,现在又还回285本,图书室里现在有多少本?48.红领巾小学买皮球380个,足球70个,课外活动时借出去423个,现在学校还剩多少个球?49.三(2)班捐赠图书400本后还剩273本,现在又买125本,现在三(2)班有图书多少本?50.冬冬想买一辆310元的滑板车,已经攒了200元。如果他每月攒30元,再攒几个月就够了?51.东方红小学的学生为希望工程共捐赠900本书,其中故事书326本,科技书475本,其余的是连环画。连环画有多少本?52.一个正方形的边长是8厘米,如果把它的边长增加10厘米,那么它的周长增加多少厘米?53.一个长方形的操场周长是400米,长是宽的3倍,这个操场的长和宽各是多少米?54.有两个同样的长方形,长是8分米,宽是4分米。如果把它们拼成一个长方形,这个长方形的周长是多少分米?如果拼成一个正方形,这个正方形的周长是多少分米?55.冬冬借了一本科技书有40页,一周后归还,他每天准备看6页,能按时归还吗?56.三(2)班有44人,老师准备分成8个小组讨论,每组可分几人,还剩几人?57.用一段长4米的布料可以裁5件同样大小的背心。做一件背心要用多少布?58.一头小象重4吨,用一辆载重10吨的大货车运,一次最多能运几头小象?59.红旗连锁店原有瓶干632袋,卖出385袋,又运200袋,这时店里有多少袋瓶干?60.学校买810本练习册,一年级领走168本,二年级领走165本,还剩多少本?61.一列火车的第10号车厢原有116人,到某站后,有58人下车,有45人上本。再开车时,这节车厢有多少人?62.一台VCD要238元,一台扫描仪要458元,爸爸带了800元钱。够不够?63.张大爷打了700斤鱼,上午卖出523斤,下午比上午少卖出394斤。(1)下午卖了多少斤?(2)这一天一共卖了多少斤?(3)还剩多少斤?64.小明和姐姐一道去书店,姐姐买一本《英语辞典》用去87元,小明买一本科技类的书用去24元。姐姐付给收银员150元,应找回多少元?65.要给一幅长30厘米,宽26厘米的画做画框。画框的周长至少是多少厘米?66.用两个长4厘米,宽3厘米的长方形拼成一个大长方形。大长方形的周长可能是多少?67.向阳小学的操场是一个长方形,长100米、宽65米。小强围着操场跑了2圈,小强一共跑了多少米?68.有学生31人,老师2人。每船限乘4人,至少要租多少条小船?69.一副中国象棋16元,一副跳棋12元,一副围棋是一副中国象棋与一副跳棋价钱和的3倍。小明带80元,买一副围棋够吗?70.同学们倡议捐400本图书给“手拉手”学校。一至六年级各捐了58本,还要捐多少本就达到了400本?71.春季植树。五年级植树12棵,六年级植树16棵,全校植树的棵数是五、六年级植树棵数的3倍,全校共植树多少棵?72.原有30个同学,又走15个。这些同学5人排一行,可以排几行?73.用一根36厘米的铁丝正好围成一个正方形。这个正方形的边长是多少厘米?74.一根绳子长25米,先剪下10米,剩下的每两米做一根短跳绳。可以做多少根短跳绳,还剩多少米?75.把一张长36厘米,宽18厘米的长方形纸片,剪成两个最大的正方形,其中一个正方形的周长是多少厘米?76.一根绳子的5倍是45米,一根铁丝是这根绳子的7倍。这根铁丝长多少米?77.修一条945米的路,第一个月修了354米,第二个月修了276米,第三个月还要修多少米才能修完?78.超市上午卖出大米153千克,下午比上午多卖出56袋,这一天工卖出大米多少袋?79.水果店运回54筐水果,其中48筐是苹果,其余是梨,问苹果的筐数是梨的多少倍?80.一辆汽车每小时行55千米,照这样计算,4小时可以行多少恰千米?81.饲养小组养32只白兔,26只黑兔,养的灰兔比白兔的总数少18只,养会灰兔多少只?82.修路队修一条路,已经修了550米,剩下的是已经修的4倍,剩下多少米?这条路全长多少米?83.明明有42张油票,芳芳的邮票比明明多14张。他们一共有多少张邮票?84.校园里有水杉树24棵,松树的棵数是水杉数的3倍。水杉和松树一共有多少棵?水杉树比松数少多少棵?85.黑天鹅有35只,白天鹅的只数比黑天鹅的3倍还多8只。白天鹅有多少只?86.王阿姨去买3个足球,每个足球28元,付给营业员100元,找回多少元?87.一个长方形操场,长55米,宽35米,小华沿操场的边跑了两全圈,跑了多少米?88.三(1)班借29本,三(2)班借了38本,三(3)班借的书比一班和二班借的总数少34本,三(3)班借书多少本?89.水果店运850千克苹果,上午卖286千克,下午卖354千克,还剩多少千克?90.一根绳子长25米,先剪下10米,剩下的每两米做一根短跳绳。可以做多少根短跳绳,还剩多少米?91.小红、小英、小兰、小平四人进行一次乒乓球比赛。每两人打一次,一共要打多少场?请把他们写出。92.水果店运回650千克苹果,卖出了385千克,有运回270千克。水果店现在有苹果多少千克?93.红星小学三年级的同学乘四辆汽车去春游,前3辆车各坐68个同学,第4辆车坐74人,这次春游一共去了多少人?94.一篇文章600字,小芳的爸爸平均每分钟能打67个,9分钟能打完吗?95.操场上有26人在条高,跑步的人数比跳高的3被多10人,跑不的有多少人?96.超市上午卖出大米176袋,下午比上午多卖出43袋,这一天共卖出多少袋?97.一段铁丝长84厘米,做了一个边长是16厘米的正方形框架后,还剩多少厘米?98.少年宫的舞蹈队有48人,乐器队有27人,合唱队的人数是舞蹈队和乐器队的总数2倍。合唱队有多少人?99.有38个糖果,平均分给7个小朋友,每人分几个?还剩几个?100.一根藏19米的绳子,先剪下8米,剩下的每两米做一根短跳绳。可以做多少根段跳绳,还剩多少米?101.一部电视机荧光屏是个长方形,它的宽是34厘米,比长短10厘米,它的周长是多少? 102.一块长方形菜地的长是75米,是宽是3倍,这块菜地的周长和占地面积各是多少? 103.一块正方形菜园,它的四周用长24米的篱笆围了起,求这块菜园的面积?104.一个长方形的人造滑冰场,宽是25米,长是宽的2倍少2米,求这个滑冰场的周长和面积各是多少?105.一个篮球场的长是26米,是宽的2倍,这个篮球场的周长是多少米?占地多少平方米?106.朱伟绕正方形操场跑了3圈共计1200米,求这个操场的每边长多少米?107.一个长方形长8厘米,宽3厘米,使这个长方形变成正方形,宽必须增加多少厘米?正方形的面积比这个长方形多多少平方厘米?108.有一个长方形草地,长14米,宽9米,现在要扩大草地,长增加7米,宽增加3米,现在的面积是原的多少倍?原草地一周的长比现在少多少米?109.动物园里有250只猴子,其中公猴子是母猴子的9倍,问动物园里有多少只公猴子?110.一个年级的小朋友排队,如果排成活9人一排,那么可以排38排,还剩下8人,如果排成8个人,能排几排,剩下多少人?111.三班小朋友做玩具,一共做了48个,送给幼儿园15个,其余的平均分给一年级3个班,每班可以分得几个?112.运动会上,小明3分钟跳绳297个,小红2分钟跳绳170个,平均一分钟内谁跳得快,快几个?113.一本《故事大王》共265页,小明打算4天看完,小花打算6天看完,小明平均每天至少要看多少页?小花呢?114.李大伯家养了200只鸡,第一天先卖128只,平均每只鸡可卖9元,李大伯这天能卖多少元?剩下的鸡第二天卖,每8只装一笼,能装多少笼?115.水果店运一筐西瓜,一共920个,每筐可以装8个,现在有120个筐,够装吗?116.小明打字3分钟可以打279个,小华432个字4分钟打完,估计一下,谁打的快?如果小明打一篇文章,用了5分钟,这篇文章有多少字?117.鲜花店运百合、玫瑰、菊花各600朵,每3朵百合、4朵玫瑰,5朵菊花可以扎成一束,问这些花最多可以扎成几束?118.4棵杨树苗48元,3棵松树苗63元,哪种树苗每棵的价钱贵一些?119.张教师带100元去商场买3个小足球,找回了7元,你能知道每个小足球多少元吗? 120.李大伯家养了82只公鸡,母鸡558只,养的鸡是鸭的5倍,问养鸡、鸭共几只?121.一条公路长450米,在公路一边栽树,每隔5米栽一棵,工人要栽多少棵?(两头都要栽) 122.服装厂的一个车间,从早上8时到15时一共做了285件衣服,他们平均每小时做多少件衣服?123.姓赵的小马虎计算一位除法时,把除数7看成了9,结果商成了14,请你告诉他正确答案是多少?124.王老师买语文、数学和英语三种书一共用了703元,语文书每本9元,数学书每本6元,总共买了111本书,如果三种书买的数量一样多,问英语书多少钱?125.小学的开学时间是9月1日,放假时间是1月20日,问整个学期有多少天?126.小明吃水果,每天吃水果篮里的一半水果,吃到第四天时发现吃完后只剩下一个水果,问开始篮子里有多少水果?127.小明看到一个式子,如下7□4÷8 问□里面写数字多少,则商为两位数?128.在运动室里放篮球,一排放5个,一个架子上可以放6排,每三个架子占用一间运动室,问200个篮球需要放几间运动室?129.小朋友们摘苹果,5人摘了7天,一共摘了735千克苹果,问平均每人每天摘多少千克? 130.小朋友们排队坐车,小赵排在每54位,小刘排在138位,每个车有6个座位,他们分别在第几辆车?131.一件衣服158元,一条裤子165元,所有的衣服都半价销售,问妈妈有900元,最多可以买几身衣服(注衣服和裤子加起是一身)?132.养牛场有5个牛棚,每个牛棚里有6头牛,每头牛平均一天吃草18千克,这些牛一天吃多少草?133.三年四班用200元班费买以下物品,跳绳4元,足球9元,跳棋6元,请问正好将钱用完,你的方案是什么?134.上题中每样东西都要买,而且要买的东西数量尽可能的多,请列出你的方案?。

安全教育考试三级试题含答案专项训练题(5篇)

安全教育考试三级试题含答案专项训练题(5篇)

三级安全教育答案一.填空题:1.安全生产方针是:安全第一、预防为主。

2.建筑业频发“五大伤害’是高处坠落、物体打击、机械伤害、触电、坍塌事故。

其中高处坠落占40%-50%。

3.伤亡事故发生的主要原因是“三违’造成的,即违章指挥、违章作业、违反劳动纪律。

4.预防伤亡事故发生三不伤害是:不伤害自己、不伤害他人、不被他人伤害、不让他人被伤害。

5.坑(槽)沟边1米以内不准堆土堆料,不准停放机械。

6.开关箱周围不准堆放杂物,与被控制的固定电气设备距离不超过3米,以便发生故障及时切断电源。

7.中华人民共和国国家标准《高处作业分级》中规定:高处作业,凡在坠落高度基准面2米以上有可能坠落的高处进行得分作业,均称为高处作业。

8.常见安全标志可分为:指示、提示标志、禁止、警告标志四类。

9.正确使用安全带,是要求不准将安全带打结使用,要把安全带挂在牢靠处和应高挂抵用。

二、选择题1.C;2.B;3.C;4.A;5.B;6.A;7.C;8.A9.B;10.B;11.B;12.A;13.C;三、简答题1.进入施工现场为什么要戴好合格的安全帽?答:在施工现场工作,防止碰伤或坠落物砸伤头部,因此必须佩带合格的、无损坏的安全帽,并扣好下颚带。

2.为什么不允许穿拖鞋或光着脚进入施工现场?答:为防止刺伤、烫伤、扎伤脚,所以禁止穿拖鞋或光脚进入施工现场。

员工三级安全教育考试试题姓名:年月日得分:一、单项选择题:(共30题,每题2分。

每题的备选项中,只有一个最符合题意)1.《安全生产法》适用于在中华人民共和国领域内从事( A )活动的单位。

A.生产经营 B.经营 C.生产2.依照《安全生产法》的规定,生产经营单位必须依法参加工伤社会保险。

工伤保险费应由( B )缴纳。

A.从业人员 B.生产经营单位 C.单位和个人共同3.依照《安全生产法》和有关法律、法规的规定,国家实行生产安全事故( B )制度,追究生产安全事故责任人员的法律责任。

A.追究责任 B.责任追究 C.责任4.国家对在改善安全生产条件、防止生产安全事故、参加抢险救护等方面取得( C )成绩的单位和个人,给予奖励。

【应用题专项】 北师大版三年级数学上册 第1单元 《混合运算》(知识梳理+典例精讲+专项训练) (含

【应用题专项】 北师大版三年级数学上册 第1单元 《混合运算》(知识梳理+典例精讲+专项训练) (含

第一单元混合运算(讲义)三年级数学上册专项训练(知识梳理+典例精讲+专项训练)1.乘加、乘减混合运算的运算顺序。

先算乘法,后算加、减法。

2.除加、除减混合运算的运算顺序。

先算除法,后算加、减法。

3.有小括号的四则混合运算顺序。

在一个混合算式中,如果有小括号,要先算小括号里面的,再算小括号外面的,由此可以看出小括号有改变运算顺序的作用。

【典例一】商店运进白粉笔和彩粉笔共6箱,每箱8盒,其中白粉笔有32盒,彩粉笔有多少盒?【分析】6乘8算出两种粉笔的总盒数,再用总盒数减去白粉笔的盒数即可求得彩粉笔的盒数。

【详解】6×8-32=48-32=16(盒)答:彩粉笔有16盒。

【典例二】(1)兴华小学三(1)班46名同学前往食堂就餐,每张桌子坐8人。

如果有4张这样的桌子,那么还有多少人没有座位?(2)结合上题中所给条件,写出算式”8×7-46”所表示的意思,并计算。

【分析】(1)每张桌子坐8人,先用乘法求出4张桌子可以坐多少人;再用总人数减去已经有座位的人数,剩下的就是没有座位的人数。

(2)8表示每张桌子坐8人,8×7表示7张这样的桌子可以坐多少人,再减去三(1)班的总人数46,还剩下多少座位;据此解答。

【详解】(1)46-8×4=46-32=14(人)答:那么还有14人没有座位。

(2)表示的意思是:如果有7张这样的桌子,还剩下多少个空座位?8×7-46=56-46=10(个)答:还剩下10个空座位。

【典例三】整箱买平均每瓶果汁的价格比单买一瓶果汁的价格便宜多少元?【分析】根据题意可知:单买一瓶果汁的价格-整箱买平均每瓶果汁的价格=整箱买平均每瓶果汁便宜的价格,整箱买平均每瓶果汁的价格÷整箱果汁的价钱除以整箱果汁的瓶数=整箱买平均每瓶果汁的价格,依此列式并计算即可。

【详解】根据分析可列式为:8-48÷8=8-6=2(元)答:整箱买平均每瓶果汁的价格比单买一瓶果汁的价格便宜2元。

三年级数学思维专项训练1--简单的整数加减乘除运算(原卷+解析版)

三年级数学思维专项训练1--简单的整数加减乘除运算(原卷+解析版)
7.计算:2999+999×999=
8.计算:13×25×125×4×8=
9.计算:197×198-196×199=
10.计算:113×5-37×5=
11.算式37×99+111×6 7的计算结果是
12.计算:666×111+222×667=
13.计算251×4+(753-251) ×2=
14.计算:11÷17+17÷19+20÷17+40÷19+37÷17=
2.答案:111095
分析:原式=10-3+100-3+1000-3+10000-3+100000-3
=10+100+1000+10000+100000-15
=111095
3.答案:20
分析:原式=45000÷25÷90
=45000÷90÷25
=500÷25
=20
4.答案:1000
分析:原式=5×(5+1)×100+3×7-[4×(4+1)×100+3×7]
15.计算:80×37+47×63=
16.计算:37×37+2×63×37+63×63=
17.计算:4999×5001=
18.计算:(1+2+3+4+…+99+100)-(2+4+6+8+…+96+98)=
三年级思维训练1--简单的整数加减乘除运算
参考答案
1.答案:493
分析:原式=(63+17)+(52+38)+(49+ 81)+24+74+95=493

语文三年级上册期末课外阅读专项训练(一)

语文三年级上册期末课外阅读专项训练(一)

语文三年级上册期末课外阅读专项训练(一)姓名:________ 班级:________ 成绩:________同学们,经过一段时间的学习,你一定长进不少,让我们好好检验一下自己吧!一、现代文阅读阅读课内片段,完成练习。

英子犹豫了一会儿,慢吞吞地站了起来,眼圈红红的。

在全班同学的(注视凝视)下,她终于一摇一晃地走上了讲台。

就在英子刚刚站定的那一刻,教室里(竟然骤然)间响起了掌声,那掌声热烈而持久。

在掌声里,我们看到,英子的泪水流了下来。

掌声渐渐平息,英子也镇定了情绪,开始讲述自己的一个小故事。

她的普通话说得很好,声音也十分动听。

故事讲完了,教室里又响起了热烈的掌声。

英子向大家深深地鞠了一躬,然后,在掌声里一摇一晃地走下了讲台。

1 . 在括号里选择恰当的词语,打“√”。

2 . 英子为什么“犹豫了一会儿”?_____________________________3 . 英子“犹豫了一会儿”才走上了讲台,说明英子其实也是个_____的孩子。

4 . 从两次掌声里,你体会到了什么?______________________________5 . 阅读乐园。

脚印列宁和哥哥去采蘑菇,为了抄近路,他们需要穿过一片森林。

森林里没有路。

他们发现了一个行人的足迹,便按着这勉强看得出来的脚印走。

有些地方,那个人踩倒的草又长起来,把脚印填平了,他们只好根据那个人留下的一些标记猜测那些“路”了。

看,在清凉的泉水边,有一个白桦木的小勺子,可以用它喝干净的水;看,在泥泞的小河沟上,搭了两块木板,踩着它过河沟可以不弄湿脚;看,那边搬开了拦住去路的大橡树……路,很不好走;天,又闷热得厉害。

哥哥看看列宁,担心弟弟太累了。

列宁已经浑身是汗,却兴高采烈、喜笑颜开!哥哥问列宁:“你为什么这样高兴呢?”“因为我发现,”列宁眯着眼睛,一边思考,一边回答,“在我们前面,走过去了一个高尚的人——他在自己走过的路上,做了多少好事啊!”哥哥兴奋得一下子把他抱起来,说:“对,生命就应当这样度过:做很多好事,来留下自己的脚印。

【修改病句专项训练.1】三上语文

【修改病句专项训练.1】三上语文

用词不当1、沿街摆满了莴笋、韭菜、鸡鸭和农副产品。

把“和”改成“等”,沿街摆满了莴笋、韭菜、鸡鸭等农副产品2、今天是第一天开学,他穿戴的都是新衣服。

去掉“戴”,今天是第一天开学,他穿的都是新衣服。

3、老师用和蔼的语气和慈祥的目光注视着我们。

去掉“和蔼的语气和”,老师用慈祥的目光注视着我们4、这个问题引起大家的沉醉。

“沉醉”改成“沉思”,这个问题引起大家的沉思5、听了这个故事,我不约而同地笑了。

去掉“不约而同地”,听了这个故事,我笑了。

三年级语文上册修改病句专项训练(day2)用词不当1、故事读完后,大家热闹地鼓掌。

“热闹”改成“热烈”,故事读完后,大家热烈地鼓掌。

2、我们的生活水平在不断改善。

“改善”改成“提高”,我们的生活水平在不断提高。

3、我们要注意发挥优点,改正缺点。

“发挥”改成“发扬”,我们要注意发扬优点,改正缺点。

4、秋天的九寨沟风景区,是一个美丽的季节。

“季节”改成“地方”,秋天的九寨沟风景区,是一个美丽的地方。

6、他很早就养成了早锻炼的好习气。

“习气”改成“习惯”,他很早就养成了早锻炼的好习惯用词不当1、冬天,寒风呼啸着拂面而来,吹得人瑟瑟发抖。

“拂面”改成“铺面”,冬天,寒风呼啸着拂面而来,吹得人瑟瑟发抖。

2、坚持写日记,写作能力就会迅速提高和扩大。

去掉“和扩大”,坚持写日记,写作能力就会迅速提高和扩大。

3、我们要认真纠正自己的缺点和错误。

“纠正”改成“改正”,我们要认真改正自己的缺点和错误。

4、长城像条巨龙,在崇山峻岭之间弯曲盘旋。

“弯曲”改成“蜿蜒”,长城像条巨龙,在崇山峻岭之间蜿蜒盘旋。

5、少先队员要发挥革命传统。

“发挥”改成“发扬”,少先队员要发扬革命传统。

三年级语文上册修改病句专项训练(day4)用词不当1、不要哭,就算你在牛肚子里做了一次旅行吧!“做”改成“作”,不要哭,就算你在牛肚子里作了一次旅行吧!2、夏明同学陆续三年被评为“三好学生”。

“陆续”改成“连续”,夏明同学连续三年被评为“三好学生”。

三年级下册语文试题-小学三年级课外阅读专项训练一(含答案)部编版

三年级下册语文试题-小学三年级课外阅读专项训练一(含答案)部编版

课外阅读专项训练一(一)燕子筑巢阳春三月,柳树吐出了新芽,桃树开出了花,可爱的燕子从南方回来了。

我7 岁的时候,也是这样一个美丽的春天,曾燕子在舅舅家房檐下筑巢。

那天,我在舅舅家玩,看见两只燕子在屋前转了几圈,叽叽喳喳地叫着,然后落在一棵柳树上,东张西望的。

它们穿着黑外衣,露出白衬衫,小眼睛黑亮黑亮的,真惹人喜爱。

过了一阵子,它们飞走了。

可不一会儿,又地衔着泥回来了。

我,因为我知道它们要筑巢了。

只见一只燕子把嘴里的泥团按在屋檐下,另一只却飞出去了。

一会儿,那只又衔着泥飞回来了,这只又飞出去⋯⋯不知过了多久,它们终于筑成一个半圆,然后在原有的半圆上加了一圈又一圈⋯⋯几天以后,巢了。

它们又衔来许多稻草、羽毛,把巢铺好。

过了几天,我看见两只燕子把头从巢里伸出来,愉快而兴奋地叫着。

我真为它们的成功感到开心。

燕子的巢虽然不是世界上最美丽、最温暖的,却是它们心血的结晶,是它们坚持不懈的结果。

我爱燕子,爱它那活泼可爱的样子,更爱它那持之以恒的精神。

我想,燕子告诉我们一个道理:成功是靠辛勤劳动获得的。

1. 选择合适的词语填在文中横线上。

(填序号)① 大功告成② 喜出望外③ 亲眼见过④ 出人意料2. 照样子,写词语。

(1)例:叽叽喳喳(AABB 式写声音)(2)例:黑亮黑亮(ABAB式写颜色)3. 燕子筑巢是它们的结晶,是它们的结果,是靠它们获得的。

4. 短文第3 自然段运用的修辞手法,描写了,表达了作者之情。

5. 用“ ”画出文中描写燕子筑巢经过的句子,并说说你从中体会到了什么。

(二)丑菊我去年种了盆丑菊,天天盼着它快开花,因为我倒要看看享有此恶名的花儿究竟怎样。

可是(心想事成事与愿违),它偏偏跟我过不去,懒洋洋的地睡大觉,连花的影子都没有。

我气得真想把它拔了,但没舍得。

今年“五一” ,沉睡了一年的花儿忽然打了苞,我高兴极了,真(庆幸后悔)没把它拔掉。

起初,底狭头宽的绿叶芯中夹了一个绿色的小球,仿佛夹了颗小绿豆。

2018年中考英语真题分类汇编题型3阅读理解专项训练一人物故事含解析

2018年中考英语真题分类汇编题型3阅读理解专项训练一人物故事含解析

2018年中考英语真题分类汇编题型3阅读理解专项训练一人物故事含解析题型三阅读理解专项训练一人物故事时间:8~10分钟/篇分值:2分/小题Passage 1(2018黄冈)One day, Mr. Li was reading a book in his office after school. To his surprise, a ball flew in suddenly and hurt him on the head. He took the ball to the window, but he only saw a group of boy students running away quickly and disappearing in a minute. He sat down again and continued his reading. As it got dark, it was time for him to leave for home. Looking at the ball, he wondered what to do with it. He knew the owner of the ball must be nearby and wished to get it back. He went downstairs and walked to the playground. It was at the center of the playground that he placed the ball with a piece of paper, on which he wrote “Be careful next time!”. Then he walked away.The next morning, as Mr. Li opened the office door, he found the same piece of paper on the floor. Some words were added after his words: “Thank you for your kindness. Anyway, you are a clever fellow.”( )1. What happened while Mr. Li was reading in his office?A. The window was broken by a ball.B. A ball hurt him on the head.C. A ball hit the window.D. The door was broken by a ball.( )2. Why did the owner of the ball run away quickly?A. He was afraid of Mr. Li.B. He wanted to get the ball back.C. He wanted to go home.D. He went to look for the ball.( )3. How did Mr. Li deal with the ball?A. He took it home.B. He put it in his office.C. He put it back on the playground.D. He had no idea about it.( )4. According to the passage, we can know that ________.A. Mr. Li is interested in readingB. Mr. Li is too hard on his studentsC. Mr. Li is good at playing sportsD. Mr. Li is a clever teacher with kindnessPassage 2(2018安徽)While many young people were enjoying the summer vacation, Zach Bonner was working his hardest. Zach started walking from Valrico, Florida, his hometown, on Christmas, 2009. He reached Los Angeles nine months later in September, 2010. He covered a total of 2,478 miles and raised $120,000 for kids in need. Along the way, Zach attended school online. His mother, brother and sister took turns to walk or drive together with him.Although he is very young, Zach has a long history of helping others. Whena terrible storm hit town in 2004, Zach, when six, pulled a wagonHe has raised $400,000 for his Little Red Wagon Foundation since then. It gives money to projects which help homeless children. In 2007, Zach began walking to support a children's charity(慈善组织)in Tampa, Florida. He finished his journey 23 days later, 280 miles away in Tallahassee. Then in the summer of 2009, he trekked about 670 miles from Atlanta to Washington, D.C., in just two months.“As long as there are homeless kids, I will never stop walking for them.”Zach says.( )1. What did Zach do during the summer vacation in 2010?A. He stayed at home to look after his family.B. He travelled to his hometown with his family.C. He joined in a school activity with other kids.D. He walked to collect money for kids in need.( )2. We can learn from Paragraph 2 that Zach________.A. began to help people at a very early ageB. made money to pay for his educationD. worked very hard for his family( )3. At what age did Zach start walking to support a Tampa children's charity?A. At six.B. At nine.C. At eleven.D. At twelve.()4. The underlined word “trekked”in Paragraph 3 probably means “________”.A. 延伸B. 挖掘C. 跋涉D. 飞行( )5. Which of the following best describes Zach?A. Friendly and shy.B. Silly but lovely.C. Kind and helpful.D. Clever but lazy.Passage 3(2018 )From Nobody to SomebodyWhen he heard about the talent show to be held at his school, Brian decided to take part in. He had never acted on stage(舞台)before, and he was very excited. But some students laughed at him. “You are not funny but silly,”Ken, one of his classmates, said to his face. “No one will like what you do,” another boy also said to him, loudly.Brian couldn't understand why they were so unkind to him. For a moment, he thought about giving up the show. But he remembered how much his friends liked his jokes, and also his teachers said he was very funny. So he decided to prepare for the show.Brian did a great job at the talent show. Everyone loved his performance, and he won the first prize! His teachers and friends were proud of him. Even so,Ken told Brian that he was not funny, and that he would never be successful. Brian didn't understand why Ken said so, but he realized that it had nothing to do with him. He confidently continued to work towards his goal.As the years went on, Brian met more people like Ken. “You'll do a terrible job,” they said to him. Luckily, most people encNow Brian is a and he laughs all day long!( )1. What did Brian love best when he was a student?A. Going to school.B. Helping classmates.D. Meeting new friends.( )2. Brian decided to prepare for the show because ________.A. his friends liked his jokesB. he was invited by a TV stationC. he wasn't busy acting in moviesD. Ken was expecting his performance( )3. After winning the first prize, Brian ________.A. began to understand KenB. became a teacher of actingC. encouraged others to join himD. continued to work towards his goal.A. successB. happinessC. luckD. pridePassage 4(2018东营)We have heard about people who have special memories. Recently there has been a report about a woman from Australia who can remember almost every detail(细节) of all the events in her daily life.Rebecca Sharrock, 25, is one of just 80 people worldwide who have been indentified(确定) as having Highly Superior Autobiographical Memory (HSAM,超级自传体记忆症). It means she can remember every small event—which most people would forget within(在……以内) days—as if it had happened just minutes ago.“I remember my mum putting me in the driver's seat of a car and taking a picture of me when I was 12 days old,”she said. “That's my earliest memory.I remember every day since then. I can't tell all the dates exactly because I was too young to understand calendars, but I remember what I did that very day, what the weather was like and so on.”Rebecca can also re­experience taste. If she's eating something that she doesn't like, she thinks about Black Forest cake, her favorite food, and the memory will be so strong that she can nearly “taste” it.However, sometimes her memories prove(证明) to be painful. Because they're not just events that she remembers. “When I relive(再体验) memories, the feelings return, too,” Rebecca said.“For example, I remember falling over when I was three at my grandparents' house and hurting my left knee. Talking about it now, I feel painful in my left knee.”“At night, I have to sleep with the radio/recorder and a soft light on,”she added. “If it's too dark or quiet, my mind would be filled with all these memories and I can't sleep.”( )1. Which is NOT TRUE about Rebecca?A. She has special memories.B. She is from Australia.C. She is 25 years old.D. She can remember every detail of all the events.( )2. What happened to Rebecca on the day when she was 3 years old?A. She was identified as having HSAM.B. Her mother put her in a car and took a picture of her.C. She started to understand calendars.D. She hurt her left knee at her grandparents'.( )3. Whenever she is reliving her memories, ________.A. she is happyB. she experiences the feelings againC. she feels pain in her kneesD. she can taste her favorite food( )4. What is the result of having HSAM?A. She can remember every event in her daily life.B. She can re­experience taste.C. She can relive feelings.D. All the above.( )5. From the passage, we can infer(推断)that________.A. HSAM can do her good, but it also brings her painB. she feels painful if she recalls her experiencesC. she can fall asleep while she is re­experiencing memoriesD. HSAM can greatly improve her living conditionsPassage 5(2018江西)Carlton Joseph is a fashion designer(服装设计师), but not just any fashion designer. He appears on television, he writes books, and he owns his own fashion house.Born in 1980, Carlton started designing clothes when he was eleven. His father owned a clothes store, and Carlton used to work there at the weekend. Then he did a design course at college.When he was 21, someone suggested doing a TV program. He made his first show “Ca rlton's Clothes”in 2004, and he wrote his first book in the same year. Since then he has written four more. Carlton got married to TV producer Susan Mills in 2005.“Design: Carlton”.At work Carlton always wears black trousers and a black coat, but at home, or when he goes out, he wears clothes with bright colors(red, blue and yellow). He is especially crazy about new glasses, he buys a new pair every few weeks. “I like to look different every day,” he says.Carlton started wearing glasses when he was twelve. He dyed(给……染色) his hair red when he was 18. It is still red, and this year, for the first time, he has grown a beard. “My wife likes it,_that's why” is his explanation. But hisbeard is black!( )1. How old was Carlton when he wrote his first book?A. 11.B. 21.C. 24.D. 25.( )2. What does the underlined word “it” refer to?A. Carlton's hair.B. Carlton's beard.( )3. What is the main idea of Paragraph 5?A. Carlton likes to look different.B. Carlton is a hardworking person.C. Carlton is crazy about new glasses.D. Carlton loves wearing colorful clothes.( )4. Which of the following is true according to the passage?C. Carlton made his first show after he got married to Susan.D. Carlton got some design experience before going to college.Passage 6(2018无锡)This year the US will honour(纪念) one of the country's most famous writers—Mark Twain(1835­1910). Most readers know that his real name was Samuel Longhorne Clemens, but how many know where the pen name “Mark Twain”came from?The answer shows Clemens' colourful early life before he became a writer. “Mark Twain” was the cry shouted on a ship when the ship entered a part of a river that was two fathoms(6 feet)deep. “Twain” is an old­fashioned way of saying “two”. Twain trained as a ship pilot on the Mississippi river for two years, a time that he wrote about in the humorous Life on the Mississippi(1883).an important theme in many of his works—who could forget the journey of Huck and Jim along it in his most famous book, The Adventures of Huckleberry Finn(1884)?With little education, he had to teach himself how to write stories. Whenever possible, he would go to public libraries. There he spent much time reading and thinking, which greatly helped him with his writing.On the other hand, his life experiences gave him wonderful material to write about and attract readers. Twain wrote in a style that has been called “local colour”because it shows great knowledge of local people and their customs.This gift is very clear in the two books for which Twain is still celebrated today:The Adventures of Tom Sawyer(1876) and its follow­up The Adventures of Huckleberry Finn, which many people call “The Great American Novel”.The most amazing invention in the book is the voice of Huck himself. Huck did not enjoy schooling. It shows in the way he uses language, in a spoken style. Only a master like Twain could copy the way a young southern boy talked so well.( )1. What does the underlined word “gift” mean in the passage?A. Twain's talent for self­teaching.B. Twain's “local colour” writing style.C. Twain's good sense of humour.D. Twain's experiences as a ship pilot.( )2. According to the passage, what is the best part of The Adventures of Huckleberry Finn?A. The deep social meaning.B. The exciting life experiences.C. The special way that Huck talks.D. The nice view of the Mississippi.( )3. Which is the most suitable place in the passage for the sentence, “”?A. At the beginning of Paragraph 2.B. At the beginning of Paragraph 3.C. At the beginning of Paragraph 4.D. At the beginning of Paragraph 5.( )4. What is the passage mainly about?A. Mark Twain's career as a great writer.B. Mark Twain's interest in describing local life.C. Mark Twain's achievements in American literature field.D. Mark Twain's life experiences which influenced his writing.Passage 7(2018南京)Rachel Carson(1907­1964) was a pioneer of the world's environmental movement through her writing about the protection of the natural world. Her 1962 book Silent Spring made her well known by many people. It describes the harmful changes in the environment of using toxic(有害的) chemicals on farmland.Carson's career started as a biologist in the US Bureau of Fisheries. ln 1951 she published her first book, The Sea Around Us, which became a bestseller. It made her rich enough to leave her job and devote her life to writing. She was a gifted writer. Her next two books were also about the oceans and both topped the book sales lists.Carson's book Silent Spring It painted a bleak(荒凉的) future for the whole natural world. It led to a nationwide ban(禁止) on the use of a deadly chemical called DDT, and other toxic pesticides(农药) that farmers used for their crops. Many people say the book led to the creation of America's Environmental Protection Agency.Since her death, Carson's name has continued to be connected with protecting the environment. There is now a yearly Rachel Carson Book Prize. Norway awards the Rachel Carson Prize to women who have made great contributions to the field of environmental protection. In 1980, 16 years after her death, she was awarded the Presidential Medal of Freedom, the highest civilian honour in America.( )1. What happened to Rachel Carson in 1962?A. She started to write books.B. She gave up working as a biologist.C. Her book The Sea Around Us sold well.D. Her book Silent Spring made her famous.( )2. What most probably made Rachel Carson leave her job?A. She got an award.B. She published Silent Spring.C. The Sea Around Us brought her enough money.D. The US government took notice of her researches.( )3. Why is the book Silent Spring important to America's environmental protection?A. It describes a silent spring.B. It topped the book sales lists.C. It changed how America thought about nature.D. It includes all Carson's research achievements.( )4. What does the underlined word “It” in Paragraph 3 mean?A. The book Silent Spring.B. The way America thought.C. The US Bureau of Fisheries.D. America's Environmental Protection Agency.( )5. Why was Rachel Carson awarded the Presidential Medal of Freedom?A. She published the book Silent Spring.B. She did a lot of researches for the US Bureau of Fisheries.C. She donated much money to the Rachel Carson Book Prize.D. She made great contributions to the environmental protection.。

小学三年级解决问题专项训练(一)

小学三年级解决问题专项训练(一)

小学三年级解决问题专项训练(一)1、动物园里有一只雄狮,体重是223千克。

一头牛的体重是一只雄狮的3倍。

一头大象的体重是一头牛的5倍。

一头大象的体重是多少千克?要想解决这个问题,我们首先要知道,再求。

请列成一个算式。

2、科技馆儿童票3元/张,成人票6元/张。

一家三口人(两个大人一个孩子)一共多少钱?要想解决这个问题,我们首先要知道,再求。

请列成一个算式。

3、一辆普通自行车是360元,一辆变速自行车的价钱是普通自行车的5倍。

买一辆普通自行车和一辆变速自行车一共多少钱?要想解决这个问题,我们首先要知道,再求。

请列成一个算式。

4、王晓丽每天骑自行车上学,平均每分钟骑192米,王晓丽家到学校有1600米,她骑车8分钟能到学校吗?要想解决这个问题,我们首先要知道,再求。

请列成一个算式。

5、一个室内体育场的看台分8个区,每个区有61个座位,500个人看一场比赛,座位够吗?要想解决这个问题,我们首先要知道,再求。

请列成一个算式。

6、《小学生课外读物》6元/本,一次性购买50本以上优惠价为4元/本,学校想买198本《小学生课外读物》能便宜多少钱?要想解决这个问题,我们首先要知道,再求。

请列成一个算式。

7、篮球96元/个,篮球的价钱是小皮球的4倍,买一个篮球和一个小皮球一共多少钱?要想解决这个问题,我们首先要知道,再求。

请列成一个算式。

8、书包43元一个,钢笔4元一个,有100元钱,买了一个书包后,剩下的钱还能买几只笔?要想解决这个问题,我们首先要知道,再求。

请列成一个算式。

9、亮亮的爸爸今年45岁,三年前爸爸的年龄是亮亮的6倍,亮亮今年多大了?要想解决这个问题,我们首先要知道,再求,最后求。

请列成一个算式。

10、一个小皮球8元,一个篮球的价钱是小皮球的10倍还多6元,一个篮球多少钱?要想解决这个问题,我们首先要知道,再求。

请列成一个算式。

11、电子城上半月卖出计算机850台,下半月卖出计算机是上半月的2倍,这个月一共卖出多少台计算机?要想解决这个问题,我们首先要知道,再求。

人教三年级数学解决问题解答应用题练习题50专项专题训练带答案解析(1)

人教三年级数学解决问题解答应用题练习题50专项专题训练带答案解析(1)

人教三年级数学解决问题解答应用题练习题50专项专题训练带答案解析(1)一、三年级数学上册应用题解答题1.一条毛毛虫由幼虫到成虫,每天长一倍,16天能长到16厘米,问它几天可以长到4厘米?解析:14天【分析】每天长一倍即扩大2倍的意思,也就是说明天的长度是今天的2倍,16天能长到16厘米,那么15天可以长到8厘米,14天可以长到4厘米,13天可以长到2厘米……依次往前倒推。

【详解】÷=1628÷=824两天前就长到了4厘米;-=(天)16214答:它14天可以长到4厘米。

【点睛】这里需要理解的是增加1倍的意思,增加1倍即扩大2倍的意思,同理,增加2倍是扩大3倍的意思,二者之间相差1倍,也就是其自身。

2.商场里的数学。

(1)书包的价格是墨水的几倍?(2)爸爸买了两件商品,付给收银员550元,找回来14元。

爸爸买了哪两件商品?解析:(1) 6倍(2)写字台和电饭煲。

【详解】(1)18÷3=6(2)550-14=536(元)328+208=536(元)爸爸买了写字台和电饭煲。

3.现有15吨花生,可用下面的两辆车来运。

车型载质量租金3吨200元/次6吨350元/次的方案列出来。

方案载质量为3吨的车载质量为6吨的车运花生总吨数①()次()次15吨②()次()次15吨③()次()次15吨解析:(1)见详解(2)方案③最省钱,要花900元【分析】(1)让花生的总重量15吨除以各车辆的载重吨数,求解运载次数,如果除不尽,观察计算余数是否能除以另外一辆车的载重能除尽,据此解答。

(2)根据分析比较看那辆车实惠,掌握那种车更实惠,选方案就尽量多用实惠的车。

【详解】(1)列表如下:方案载质量为3吨的车载质量为6吨的车运花生总吨数①5次0次15吨②3次1次15吨③1次2次15吨车型比较便宜实惠,所以尽量多用6吨的车型,据此挑选方案③,计算价格如下:350×2+200=700+200=900(元)答:方案③最省钱,要花900元【点睛】本题考查优化问题的实际应用,选择最便宜实惠的方式是解题的基础。

统编版三年级下册期中复习阅读专项训练—阅读理解(一)(含答案+详细解析)

统编版三年级下册期中复习阅读专项训练—阅读理解(一)(含答案+详细解析)

统编版三年级下册期中复习阅读专项训练—阅读理解(一)(含答案+详细解析)期中复习专项训练——阅读理解(一)班级:_________ 姓名:__________一、现代文阅读沙百灵的制胜之道①在撒哈拉沙漠,有一种特别的鸟儿叫沙百灵,它身体很小,只有麻雀那般大。

就是这种弱小的鸟儿,在与“沙漠之王”响尾蛇的较量中,竟然每战必胜。

②有探险家记录下了沙百灵与响尾蛇搏斗的精彩一幕:③当沙百灵扑扇着翅膀停在沙丘上,准备寻找食物的时候,在沙丘里等候多时的响尾蛇凶猛地张开大口蹿了出来。

眼看沙百灵就要成为响尾蛇的美餐时,不可思议的画面出现了:面对响尾蛇的扑击,身体灵活的沙百灵用自己并不有力的爪子狠狠地拍打着响尾蛇的头部,尽管力量有限,对响尾蛇似乎也构不成什么威胁,但沙百灵并没有因此而停止拍击。

沙百灵一边躲闪着响尾蛇的血盆大口,一边用爪子疾速地拍击着响尾蛇的头部,其准确程度分毫不差。

就在沙百灵拍击了一千多下之后,响尾蛇终于无力地瘫软在沙地上,再也爬不起来了。

蛇口脱险的沙百灵停在沙丘上,从容地吃了一些甲虫类的食物后,才扑扇着翅膀慢慢地飞走了。

④沙百灵和响尾蛇的力量对比是悬殊的,但为何获胜的总是弱小的沙百灵呢?生物学家对此的解释是:沙百灵在经过长期的经验积累后,掌握了一套对付响尾蛇的制胜之道,那就是瞄准一个点—响尾蛇的头部,一个很脆弱的部位,并持之以恒地用爪子拍击。

沙百灵就是用这种坚韧不拔的精神,在一次次敌强我弱的较量中赢得了最后胜利。

⑤成功的人生往往就是从瞄准一个目标并且坚持不懈开始的。

很多人之所以失败,就是因为缺少了沙百灵那种执着的精神。

1.联系短文,我知道了“敌强我弱”的意思:响尾蛇“____________地张开_____________蹿了出来”,多么强大啊!而沙百灵“身体____________只有__________那般大”,多么弱小啊!2.第①和第③自然段分别有一个词表示“完全没有想到”的意思,它们是___________和_____________。

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专项训练1
1.已知黑斑蛇与黄斑蛇杂交,子一代既有黑斑蛇,又有黄斑蛇;若再将F1黑斑蛇之间交配,F2中有黑斑蛇和黄斑蛇.下列结论中不正确的是()
A.所有黑斑蛇的亲代中至少有一方是黑斑蛇
B.蛇的黄斑为隐性性状
C.F1黑斑蛇的基因型与亲代黑斑蛇的基因型相同
D.F2黑斑蛇的基因型与F1黑斑蛇的基因型相同
2.豚鼠的黑毛对白毛是显性,如果一对杂合子的黑毛豚鼠交配,产生四仔,则它们的表现型是( ) A.全部黑毛B.三黑一白 C.一黑三白D.无法确定
3.若已知单眼皮对双眼皮为隐性性状,一对夫妇均为单眼皮,经美容手术均变为双眼皮,则他们所生孩子一定是( )
A.双眼皮 B.单眼皮 C.一单眼皮一双眼皮 D.单眼皮的几率为1/4
4.下列杂交属于测交的是( )
A.EeFfGg×EeFfGg B.EeFfGg×eeFfGg C.eeffGg×EeFfgg D.eeffgg×EeFfGg
5.将基因型为AaBbCc和AABbCc的向日葵杂交,按基因的自由组合定律,后代中基因型为AABBCC的个体比例应为( )
A.1/8 B.1/16 C.1/32 D.1/64
6.已知一玉米植株的基因型为AABB,周围虽生长有其他基因型的玉米植株,但其子代不可能出现的基因型是( )
A.AABB B.AABb C.aaBb D.AaBb
7.向日葵种子粒大(B)对粒小(b)是显性,含油少(S)对含油多(s)
是显性。

某人用粒大油少和粒大油多的向日葵进行杂交,结果如图
所示,则这些杂交后代的基因型有( )
A.4种B.6种 C.8种D.9种
8.假如水稻高秆(D)对矮秆(d)为显性,抗稻瘟病(R)对易感稻瘟病(r)为显性,两对性状独立遗传,用一个纯合易感病的矮秆品种(抗倒伏)与一个纯合抗病高秆品种(易倒伏)杂交,F2代中出现既抗病又抗倒伏类型的基因型及其比例为()
A.ddRR,1/8
B.ddRr,1/16
C.ddRR,1/16和ddRr,1/8
D.DDrr,1/16和DdRR,1/8
9.已知玉米某两对基因按照自由组合定律遗传,现有子代基因型及比例如下:
则双亲的基因型是 ( )
A .TTSS×TTSs
B .TtSs×TtSs
C .TtSs×TTSs
D .TtSS×TtSs
10.已知水稻高秆(T )对矮秆(t )为显性,抗病(R )对感病(r )为显性,这两对基因在非同源染色体上。

现将一株表现型为高秆、抗病的植株的花粉授给另一株表现型相同的植株,所得后代表现型是高秆∶矮秆=3∶1,抗病∶感病=3∶1。

根据以上实验结果,判断下列叙述错误的是( ) A.以上后代群体的表现型有4种 B.以上后代群体的基因型有9种
C.以上两株亲本可以分别通过不同杂交组合获得
D.以上两株表现型相同的亲本,基因型不相同
11.位于常染色体上的A 、B 、C 三个基因分别对a 、b 、c 完全显性。

用隐性性状个体与显性纯合个体杂交得F 1,F 1测交结果为aabbcc ∶AaBbCc ∶aaBbcc ∶AabbCc =1∶1∶1∶1,则下列正确表示F 1基因型的是(
)
12.下表是分析豌豆的两对基因遗传情况所得到的F 2基因型结果(非等位基因位于非同 源染色体上),表中列出部分基因型,有的以数字表示。

下列叙述不.
正确的是 ( ) A .表中Y 、y 和R 、r 基因的遗传信息不同
B .1
、2、3、4代表的基因型在F 2中出现的概率大小为3>2=4>1 C .F 2中出现表现型不同于亲本的重组类型的比例是 6/16 或10/16 D .表中Y 、y 、R 、r 基因的载体有染色体、叶绿体、线粒体
13.现有甲、乙、丙、丁、戊五株豌豆,如对其杂交,统计后代的数量如下(黄色、圆粒为显性):
A.甲、丙 B.甲、戊 C.乙、丙、丁 D.乙、丙、戊
14.牛的无角(A)对有角(a)为显性,一头无角公牛分别与三头母牛交配,其结果如下:
无角公牛×有角母牛①→无角小牛②无角公牛×有角母牛③→有角小牛④
无角公牛×无角母牛⑤→有角小牛⑥则无角公牛与其他个体的基因型分别是:
无角公牛、①、②、③、④、⑤、⑥。

15.下表是豌豆五种杂交组合的数据,请回答:
(1)上述两对相对性状中,显性性状为_____________。

(2)写出每一杂交组合中两个亲本植株的基因型,以A和a分别表示株高的显、隐性基因,B和b分别表示花色的显、隐性基因。

甲组合为_____________×_____________。

乙组合为_____________×_____________。

丙组合为_____________×_____________。

丁组合为_____________×_____________。

戊组合为_____________×_____________。

(3)为最容易获得双隐性个体,应采用的杂交组合是_____________。

16.已知柿子椒果实圆锥形(A)对灯笼形(a)为显性,红色(B)对黄色(b)为显性,辣味(C)对甜味(c)为显性,假定这三对基因自由组合,现有表中的4个纯合亲本:
(1)利用以上亲本进行杂交,F2
________________________________________________________________________。

(2)上述亲本组合中,F2出现灯笼形、黄色、甜味果实的植株比例最高的亲本组合是________,其基因
型为______________,这种亲本组合杂交F1的基因型和表现型分别是________和____________,其F2的全部表现型有____________________________________________,灯笼形、黄色、甜味果实的植株在该F2中出现的比例是________。

17.玉米果皮黄色(PP)对白色(pp)为显性,非甜味胚乳(SS)对甜味胚乳(ss)为显性,黄色胚乳(GG)对白色胚乳(gg)为显性,三对基因分别位于不同的同源染色体上。

现有甲、乙、丙、丁四个品系的纯种玉米,其基因型如下表所示。

(1)
合有______________________(填写品系类型)。

(2)甲和丁________(能/不能)作为亲本进行验证自由组合定律的实验,原因是
_____________________________________________________________________。

(3)丙和丁杂交获得F1,再自花受粉,后代中出现黄色果皮、甜味、白色胚乳的概率
是________,出现白色果皮、非甜味、白色胚乳的概率是________。

(4)若用杂交育种的方式培育出ppssgg新类型,至少应选用上述品系中的________
作为育种材料。

18.已知狗皮毛的颜色受两对同源染色体上的两对等位基因(A、a和B、b)控制,且位于常染色体上,表现型有三种,经观察后绘得系谱图如下,请分析回答:(1号、2号为纯合子)
(1)以上图示性状遗传遵循孟德尔的___________________________________定律。

(2)1号和2号的基因型分别是_____________________________________________。

(3)6号和7号后代出现三种表现型,产生该现象的根本原因是
________________________________________________________________________;
在理论上6号和7号的后代中出现三种表现型的比例为________________________。

(4)若已知8号不带有B基因,8号和9号交配,则15号的基因型为________。

若12
号与一白色雌狗交配,则生出沙色狗的几率为________。

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