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按照如图所示的方法排列黑色小正方形地砖，则第14个图案中黑色小正方形地砖的块数是 ．
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按照如图所示的方法排列黑色小正方形地砖则第14个图案中黑色小正方形地砖的块数是．
按照如图所示的方法排列黑色小正方形地砖则第14个图案中黑色小正方形地砖的块数是.
如图某广场地面的图案是用大小相同的黑白正方形地砖镶嵌而成图中第1个黑色L形由3个正方形组成第2个黑
n
2
+1
n
2
+2
4n+1
4n﹣1
当白色小正方形个数等于123时由白色小正方形和和黑色小正方形组成的图形分别如图所示.则第个图形中白色
按照如图所示的方法排列黑色小正方形地砖则第14个图案中黑色小正方形地砖的块数是．
当n等于123时由白色小正方形和黑色小正方形组成的图形分别如图所示则第n个图形中白色小正方形和黑色小
如图所示在3×3正方形网格中已有三个小正方形被涂黑将剩余的白色小正方形再任意涂黑一个则所得黑色图案是
6种
5种
4种
2种
如图所示是由若干个白色小正方形和黑色小正方形组成的图案其中每一个白色小正方形和黑色小正方形的边长都
白色小正方形：10个；黑色小正方形：40个
白色小正方形：10个；黑色小正方形：80个
白色小正方形：100个；黑色小正方形：40个
白色小正方形：100个；黑色小正方形：80个
如图某广场地面的图案是用大小相同的黑白正方形地砖镶嵌而成图中第1个黑色L.形由3个正方形组成第2个黑
n
2
＋1
n
2
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4n＋1
4n－1
按照如图所示的方法排列黑色小正方形地砖则第14个图案中黑色小正方形地砖的块数是．
按照如图所示的方法排列黑色小正方形地砖则第14个图案中黑色小正方形地砖的块数是．
如图所示在3×3正方形网格中已有三个小正方形被涂黑将剩余的白色小正方形再任意涂黑一个则所得黑色图案是
6种
5种
4种
2种
将16个相同的小正方形拼成正方形网格并将其中的两个小正方形涂成黑色如图所示请你用三种不同的方法分别
按照如图所示的方法排列黑色小正方形地砖则第13个图案中黑色小正方形地砖的块数是
253
273
293
313
如图是同样规格的黑白两色正方形瓷砖铺设的若干图案则按此规律第23个图案中需用黑色瓷砖________
如图房间地面的图案是用大小相同的黑白正方形镶嵌而成.图中第1个黑色形由3个正方形组成第2个黑色形由7
22
23
24
25
如图是同样规格的黑白两色正方形瓷砖铺设的若干图案则按此规律第23个图案中需用黑色瓷砖________
当n等于123时由白色小正方形和黑色小正方形组成的图形分别如图所示则第n个图形中白色小正方形和黑色小
如图房间地面的图案是用大小相同的黑白正方形镶嵌而成图中第1个黑色L形由3个正方形组成第2个黑色L形
如图所示用大小相等的小正方形拼大正方形拼第一个正方形需要4个小正方形拼第二个正方形需要9个小正方形
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MysistercalledtheotherdayandtoldmehowsadshewasfeelingaboutMother'sDaythisyear.1IwastakenbysurprisebecauseMayfeelssofaraway.Ifeltinstantly2becauseIhadn'tthoughtaboutmymotherinawhileAndthat's3whenitoccurredtomethatour4doesn'talwaysfollowacalendar. AfterourmotherdiedIspentagooddealoftime5herinfrontofherphoto.Itenabledmeto6conversationswithherthatwere7tome.Irememberdesiringtobepickupthephoneonmanyoccasionsto8somegoodnewsorgetheradviceonlytobe9.NowIsimplytalktoherinmyhead.Herphotohasbecomea10ofherspiritandI'mgladshe'sthere. MysisterEllensaidthatthisisa11difficultyearforherandsheistryingto12whyShesoundedimpatientwithherself1313yearsshouldbeenoughtimetogetpastbeingsadonMothersDay. Thetruthisthatformeeveryyearis14.AttimeswhentheTVcommercials.advertisementsandlocalstoresabsolutelybombuswithfairytalesofflowersandchocolateandjewelryIgetangry:15thesesameremindersleavemefeeling16formywonderfulmomrecalling回忆hergenerosityandseriousstyle.Shewasalwaysatrooper.AndsometimesIdon't17anyofitatall. AsEllenandItalkedsheseemedtocometoacertain18.ShewasgoingtobeoutofthecountryonbusinessonMothersDaywithoutherhusbandoranyfamilyaroundWithoutthepresenceofthis19sheworriedaboutbeing20.ButshedecidedthatitwouldbeOK.DeepinourheartMumhasalwaysbeenwithus. 1A.Atlength B.Atintervals C.Atrandom D.Atfirst 2A.disturbed B.depressed C.guilty D.annoyed 3A.exactly B.merely C.eventually D.initially 4A.sorrow B.hesitation C.curiosity D.enthusiasm 5A.staringat B.debatingwith C.talkingto D.relyingon 6A.switchon B.carryon C.spyon D.decideon 7A.secure B.ordinary C.meaningful D.skillful 8A.request B.admit C.obtain D.share 9A.astonished B.disappointed C.embarrassed D.motivated 10A.symbol B.signal C.sign D.mark 11A.normally B.basically Cparticularly D.generally 12Asqueezeout B.sortout C.ruleout D.figureout 13A.evenif B.asif C.incase D.nowthat 14A.brilliant B.fortunate C.apparent D.different 15A.Occasionally B.Frequently C.Naturally D.Actually 16Aconcerned B.grateful C.eager D.anxious 17Aputupwith B.tryoutfor C.takechargeof D.payattentionto 18A.selection B.decision C.compromise D.conclusion 19A.support B.sympathy C.appreciation D.Courage 20Ashocked B.scared C.lonely D.nervous
下列说法中正确的是
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下列各组离子在溶液中能大量共存的是
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如图为钠原子的原子结构示意图及钠原子在元素周期表中的相关信息下列有关钠元素的说法错误的是
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It'softensaidthatyourparents'jobistomakesurethatonedayyounolongerneedthem.Andthat'scertainlythecasebythetimeyouhavekidsofyourown.Howeverthisispreciselythetimewhenyourparentsstarttoneedyou.Howdoyoutalktoyouragingparentsabouttheirhealth1butthesetipsmakeiteasier. Beforeaconversationyouhadbetterestablishyourselfasafriendnotanenemy.AlwaysstartwithanIstatementnotayoushouldstatement.2. Scientistsrecommendbeginningaconversationaboutsomethingyou'redoing﹣takingupyogatostayslimforinstance.3.Andyoucanevenhavehercommittodoingitwithyou.Whenyou'reafriendday﹣to﹣dayyourparentswilltrustyouandbeabletodependonyouduringahealthcrisis. 4.Startbyequippingthemwithasmartphonethat'sdesignedforseniors.Stayinginclosephonecontactwillkeepyouinformedofanyarisinghealthissues.Itwillhelpyoupickuponfaultsintheirmemorytoo. Yourparentsareyourparentsuntilthey'regone.Donottreatthemlikechildren.Evenifyoufindthatthere'sanemergencygoingonyoucanmakesuggestionsbuttheyhavetherighttomakedecisionsespeciallyifthere'snocognitive认知的disorder.5helpingyourparentsintheirlateryearsistheleastyoucando.Withthepropermeasuresandtechnologyitcangeteasierandfeelevenmorerewarding. A.Justastheyhavebeenthereforyou B.Itmaynotbeasimpleconversationtohave C.Itcanmeanchangesinyourparents'schedule D.Scientistsalsosuggestsphoningyourparentsregularly E.Thatcanleadtoaskingyourmomwhatshe'sdoingtokeepfit F.Talkaboutaffairsaboutyourselffirstthenextendthemtoyourparents G.Scientistsrecommendopeningthedoortodialogueinsteadofcallingthem
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下列客观事实解释正确的是
ThereisanoldsayinginChinathatgoesThedaysoftheSanjuperiodarethecoldestdays.SanjiuperiodwhichisinMinorColdreferstothethirdnine﹣dayperiodthe19thtothe27thdayafterthedayoftheWinterSolstice.TherearemanydifferentcustomsrelatedtoMinorColdinChina. Eatinghotpot DuringMinorColdpeopleshouldeatsomehotfoodtobenefitthebodyanddefendagainstthecoldweather.Winteristhebesttimetohavehotpotandbraisedmutton炖肉withsaysauce.Butitisimportanttonoticethattoomuchspicyfoodmaycausehealthproblems. Eatinghuangyacai InTianjinthereisacustomtohavehuangyacaiakindofChinesecabbageduringMinorCold.TherearehargeamountsofvitaminsAandBinhuangyacai.Ashuangyacaiisfreshandtenderitisfitforfryingroastingandbraising. Eatingglutinousrice AccordingtotraditiontheCantoneseeatglutinousriceinthemorningduringMinorColdpeopleaddsomefriedpreservedporksausageandpeanutsandmixthemintotherice. Eatingvegetablerice InancienttimespeopleinNanjingtookMinorColdquiteseriouslybutastimewentbythecelebrationofMinoroldgraduallydisappeared.Howeverthecustomofeatingvegetablericeisstillfollowedtoday.Thericeissteamedandisunspeakablydelicious.AmongtheingredientsaijiaohuangakindofgreenvegetablesausageandsaltedduckarethespecialtiesinNanjing. 1WhatdoweknowaboutMinorCold A.Itlaststwenty﹣sevendays B.Itmarksthefirstdayofwinter. C.ItreferstotheWinterSolstice. D.TheSanjiuperiodisinMinorCold 2WhatisaspecialcustominTianjininMinorCold A.Eatinghotpot B.Buyingcabbage C.HavingHuangyacal D.HavingvitaminAandBpills. 3HowdotheCantoneseeatglutinousrice A.Theyfryandtoastit B.Theyeatitfordinner C.Theysteamitwithsoysauce D.Theymixitwithmanyotherthings
Chinesedoubleamputee截肢climberXiaBoyureceivedthemostvotes1globaltobecomethe2019LaureusSportingMomentoftheYearwinneronMonday. Xiacameoutfromaninitiallistof10nomineesbeforethreefinalistsweremade2knowtothepublicearlierthismonth. Xiahadlostbothhislegsin1975duringhisfirstattempttoreach3world'shighestpeakofQomolangmaduetofrostbite.Hechallengedthesummitin20142015and20164 wellbuthisdreams5breakowingtoavalancheearthquakeandbadweatherrespectively. Xiafinallymade6inhisfifthattemptonMay142018becomingthefirstChinesedoubleamputeeclimber7reachthesummitofQomolangma. ClimbingtothesummitofQomolangmaisalwaysadreamandgoalforme.I8fightforitoverthepastdecades.DespitebadknocksseveraltimesInevergaveup.Ithinkthedeterminationmademylifesocolorfuland9meaningXiatoldChinesemedia. Xiaaddedthathisnextgoalwillbe7+2namelythehighestsummitsofseven10continentplustheSouthPoleandNorthpole.
假定英语课上老师要求同桌之间交换修改作文请你修改你同桌写的以下作文.文中共有10处语言错误每句中最多有两处.每处错误仅涉及一个单词的增加删除或修改 增加:在缺词处加一个漏字符号Ʌ并在其下面写出该加的词. 删除:把多余的词用斜线\划掉 修改:在错的词下画一横线并在该词下面写出修改后的词 注意:1.每处错误及其修改均仅限一词; 2.只允许修改10处多者从第11处起不计分 DearJoes Iammorethandelightedtosincereinviteyoutobeajudgeforaspeechcontest.Ihopeyoucanagreetocome.ForyourreferenceIwillsharewithyouthedetailsasfollow Firstofall.thiscontestfocusesonManandNaturethatisscheduledtostartat2p.mandendsat4p.m.nextweekinClassroom301.TenplayerswillattendthecontestgivetheirpreparedspeechesInmyopinionnotonlycanyouprovideuswithourprofessionaljudgmentbutalsoyoucanenjoysceneryaroundourschool.Youwillsurelyhaveagoodtimeinthisbeautifulspringday. I'llbeverymuchgratefulifyoucanacceptmyinvitations.Iamlookingforwardtoyouarrival. Yours Jenny
假定英语课上老师要求同桌之间交换修改作文请你修改你同桌写的以下作文.文中共有10处语言错误每句中最多有两处.每处错误仅涉及一个单词的增加除或修改. 增加:在缺词处加一个漏字符号/\并在其下面写出该加的词. 删除:把多余的词用斜线\划掉. 修改:在错的词下划一横线并在该词下面写出修改后的词 注意:1.每处错误及其修改均仅限一词; 2.只允许修改10处多者从第11处起不计分. LastsummervacationIworkedasavolunteerintheWolongChinaGiantPandaGardeninSichuanwhereIstayfortwoweeks.ThatIneededtodowastocleanthepandas'housesfeedthepandasormakefoodforthem.OnemalepandaItookcarewasnamedJingjing.ShewasoneofthemostinterestedpandasintheGarden.NormallythepandaisashycreaturenotusedtobeincontactwithotheranimalsparticularlyhumansbutJingjingseemedverydifferently.Heoftenreachedoutoneofhisfoottogreetmeandsmiledatme.Sometimeshetriedtomakemetolaugh.
AdanceteamfromAtlantaUSusedthebeautifulJiangsufolksongJasmineFlowerintheirperformanceontheTVshowAmazingChinese.Thesong1composeduringtheQingDynastyAd1616﹣1912wasoneofthefirstChinesesongstobecomepopularabroad. Thetrueoriginofthesong2hasmanyregionalvariationswasn'tdiscovered3twoscholarspublishedanarticleshowingthehistorybetweenthefolksongandYangzhouDitty小调anold﹣fashionedtypeoffolkmusic. Thepopularityofthesongmakesit4symboltopresentChinesecultureontheworldstage.Aworld﹣famousItaliancomposeraddedthesong5hisoperaTurandot6appearintheopera'sfirstpublicperformancein1926helpedimproveits7globefame. Intheclosingceremonyofthe2004AthensOlympicsaChinesegirlinstantlyimpressedaudience8herwonderfulsingingofthesong.It9chooseasmusicplayedattheawardceremonyinthe2008BeijingOlympicsbringingusbothnationalprideandgreatartistic10enjoy.
假定你是红星中学的李华你的英国朋友Peter热爱体育运动他将作为交换生到你校学习一年.请你给他写封邮件主要内容包括: 1.介绍你校体育课程及活动; 2.推荐一项中国传统体育项目. 注意:1.词数100左右; 2.可以适当增加细节以使行文连贯.
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