41.k2的知识精选

已知＝(3,2)，＝(－1,2)，＝(4,1)．(1)求满足＝x＋y的实数x，y的值； (2)若(＋k)(2－...

2019-07-26 问题详情：已知＝(3,2)，＝(－1,2)，＝(4,1)．(1)求满足＝x＋y的实数x，y的值； (2)若(＋k)(2－)，求实数k的值．【回答】.解：(1)∵a＝xb＋yc，∴(3,2)＝x(－1,2)＋y(4,1)＝(－x＋4y,2x＋y)．∴解得(2)∵(a＋kc)(2b－a)，且a＋kc＝(3,2)＋k(4,1)＝(3＋4k,2＋k)，2b－a＝2(－1,2)－(3,2)＝(－5,2)，∴-5(3＋4k)+2(2...

I’vedreamedofbecomingawritersinceIwasateenager.But 41 ...

2021-11-10 问题详情：I’vedreamedofbecomingawritersinceIwasateenager.But 41 isn’teasytogetabookofminepublished. 42 I’vetriedhard,noneofmybookshavebeenpublished.Thisisreally 43 (upset).Thismorni...

MybrotherandIslippedoutofthebed.Wegrabbedour 41 ...

2020-04-28 问题详情： MybrotherandIslippedoutofthebed.Wegrabbedour 41 andputonourshoes.Withoutheatersinouroldhome,wearingcoatsinsidewasas 42 aswearingshirtsinsummer. Butthismorningwas...

ItwasacoolOctoberevening.Excitementandfamilymembers 41...

2021-04-01 问题详情：ItwasacoolOctoberevening.Excitementandfamilymembers 41 thehall.Iwasonlya7-year-oldgirl,butIwasthecenterof 42 .Finally,afterweeksofpreparation,Iwould 43 allmyhardworkinadanceper...

PersonallyIthinktrainsareexcitingandromantic.Imust 41 ...

2021-02-24 问题详情：PersonallyIthinktrainsareexcitingandromantic.Imust 41 thattrainsarenotimportantmeansoftransportationintheUS,butIdohavesome 42 withthem.WhenIwasachild,growingupinasmalltownwithveryl...

LongagotherewasapoorfarmerinRussia.Hehadbeenvery 41 ...

2021-05-03 问题详情： LongagotherewasapoorfarmerinRussia.Hehadbeenvery 41 witheverythinghehad.However,whenhefoundhiselderbrotherwas 42 thanhim,hefeltdisappointed.Sohe 43 hardabouthowhecouldalsobericher....

41.Stayingupforplayingcomputergamesis

2020-04-15 问题详情：41.Stayingupforplayingcomputergamesis_________(harm)tochildren’health. 42.TheUSisChina’sbiggestexportmarket,___________(account)formoreth...

Acceptlifeasitis.Ilearnedhowtodoitfrommyfather. 41

2019-11-28 问题详情：Acceptlifeasitis.Ilearnedhowtodoitfrommyfather. 41_,hedidnotteachmeacceptancewhenhewasstrongandhealthy,butratherwhenhewas 42 andill.Myfatherwas 43_astrongmanwholovedbeingactive,butaterri...

Britishpeopleareworkingtoanolderage.41.

2021-05-29 问题详情：Britishpeopleareworkingtoanolderage.41._____numberofworking70-74-year-oldshasdoubledinrecentyears.Around10%ofpeoplein42.______(they)early70snowwork.Thisisthe43.______(high)figureonrecord.Animp...

Computergamesarepopularallaroundtheworld.Manypeople 41...

2020-09-11 问题详情：Computergamesarepopularallaroundtheworld.Manypeople 41 thesegamesontheInternet.Gameslookmoreandmore 42 ascomputertechnologyimproves.Manypeopledescribeplayingcomputergamesas ...

41.Wecametoknoweachotheralongtime

2020-11-25 问题详情：41.Wecametoknoweachotheralongtime_________.42.Children__________6mustvisitthemuseumtogetherwiththeirparents.43.Hegavehersomerosesinreturn__________herkindness.44.Wehaven'tdiscussedthematter__...

Fastfoodisbecomingmoreand 41

2020-07-17 问题详情：Fastfoodisbecomingmoreand 41 _____ popularinChina,especiallyamongchildrenandteenagers.Thereareseveralexplanationsfor itspopularity.First,itisveryconvenientand42 a...

41.When

2021-02-01 问题详情：41.When___________(explore)thecave,theyfoundavaluablemineral.42.I’llgivetheticketsto________wantsit.43.eisthefirstperson_________(arrive)andhewillarriveatthreethisafternoon.44.Theoldcoupleoft...

41.Thustheprinceandtheprincesslived

2020-04-05 问题详情：theprinceandtheprincesslived______(和平地)together.42.Movingtoanewhouseisavery_________(紧张的）experience.43.Hec_____(抱怨)thatnothingcameoutthewayhehadexpected.44.Suddenlyhereceivedan_____(紧...

41.Toeveryone’ss

2021-07-15 问题详情：41.Toeveryone’ss____________,thegirlfinishedthejobquitewell.42.SinceIwasnotbusy—mypatientdidn’tturnupatthea__________hour,Iwouldexaminehiswound.employerwillc____________(*实)thatIwasthereon...

AtanairportIoverheardafatheranddaughterduringtheir 41 ...

2020-07-13 问题详情：AtanairportIoverheardafatheranddaughterduringtheir 41 momentstogether.Her 42 wasreadyforboarding.Theyhuggedandhesaid,“Iloveyou.Iwishyou 43 ”Sheinturnsaid，“Daddy,Iwishyouenoug...

“k2”可以造什么句，k2造句

2017-10-20 在世界第二峰k2山上被困了五天后，五个加拿大登山队员于昨天获救。在这里，你将感受古老的文化，新鲜的空气，伟大的山脉，当然还有世界上最伟大的积雪盖顶的山峰，k2、珠穆朗玛、甘城章嘉。...

41.TheforeignerscametoChinainordertolearnChinesea

2020-01-09 问题详情：41.TheforeignerscametoChinainordertolearnChinesea_________（农业的）skills.42.Mexicogaineditsi_________（*）fromSpainin1821.43.Thenewbuildingdestroytheb_________（美丽）ofthecountryside.studentsmusta_____...

41.MoststudentsinChinacan’tspeakEnglish

2021-11-08 问题详情：studentsinChinacan’tspeakEnglish_____________(fluent).42._____________(determine)tomakehisdreamcometrue,hewenttoBeijingforfurtherstudy.problemisfarfrom___________(settle),sowewillhavetodiscus...

Iwaslookingthroughsomeoldphotoalbumstheotherday.Ihad 41...

2020-08-26 问题详情：Iwaslookingthroughsomeoldphotoalbumstheotherday.Ihad 41 donethatmanytimesbeforebutIfeltasudden 42 toseethemagain.Ifoundmyself 43 somanybeautifulmemoriesfrommychildhood.Therewasmyde...

41.Ithinkheisnot

2020-03-06 问题详情：41.Ithinkheisnot______(self).Hehasbeenconcernedwith peoplearoundhim.42.Millionsoffansadmirehisathleticability,_________(motivate)andconfidence.43.___________wewillgocampingtomorrowornotdepend...

ChristopherReeve, 41

2020-12-23 问题详情：ChristopherReeve, 41__wasborninSeptember,1952,wasinhisfirstschoolplay 42__hewaseightandhestartedtoactinTVshowsandfilmswhilehewasstillincollege.Hemademany____43___(success)filmsandTVshowsbuth...

31×41－11×41×2－9.5×11.

2019-11-10 问题详情：31×41－11×41×2－9.5×11.【回答】31×41－11×41×2－9.5×11＝31×41－11×41－11×41－9.5×11＝41×(31－11)－11×(41＋9.5)＝(41＋)×20－(11＋)×51＝820＋10－561－17＝252.知识点：有理数的乘除法题型：计算题...

ItwasverylatewhenIgotoutofthecinema.Bythetimethe 41 ...

2019-08-06 问题详情：ItwasverylatewhenIgotoutofthecinema.Bythetimethe 41 ended,itwas1a.m.Iwalkedtomy car whichwas 42 acrossthestreet.WhenIarrived,Inoticedsomething 43 ──thedoorswere unlock...

NewYear’sDaywascoming.MymotherandIdecidedtovisitmy 41 ...

2019-12-22 问题详情：NewYear’sDaywascoming.MymotherandIdecidedtovisitmy 41 nWales.Whentravelingthroughahighway,wefelt 42 andwereeagertoeat.Wenoticedaroadsign 43 toatowncalledBend.Thinkingthatwemightbu...

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