A.12B.14C.21D.41的知识精选

若两个三角形的相似比为1:2，则它们的面积比为（）A．1:2B．1:4C．2:1D．4:1

2020-05-17 问题详情：若两个三角形的相似比为1:2，则它们的面积比为（）A．1:2B．1:4C．2:1D．4:1【回答】B知识点：相似三角形题型：选择题...

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...

AtanairportIoverheardafatheranddaughterduringtheir 41 ...

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

执行下面的程序框图，则输出的A. 17B. 19C. 21D. 23

2019-05-28 问题详情：执行下面的程序框图，则输出的A. 17B. 19C. 21D. 23【回答】C知识点：高考试题题型：选择题...

ItwasacoolOctoberevening.Excitementandfamilymembers 41...

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

下列计算正确的是( )A．(－0.875)×＝B．－×(－6)＝－3C．－7×(－3)＝21D．(－...

2019-07-07 问题详情：下列计算正确的是( )A．(－0.875)×＝B．－×(－6)＝－3C．－7×(－3)＝21D．(－4)×0＝－4【回答】C知识点：有理数的乘除法题型：选择题...

41.Stayingupforplayingcomputergamesis

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

14C是一种放**同位素，在一定条件下，14N可转变为14C，下列说法正确的是( )A．14C和14N互为...

2020-09-09 问题详情：14C是一种放**同位素，在一定条件下，14N可转变为14C，下列说法正确的是( )A．14C和14N互为同位素 B．14N和C60是同素异形体C．C核素中的中子数为8 D．14CO2的摩尔质...

41.MoststudentsinChinacan’tspeakEnglish

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

MybrotherandIslippedoutofthebed.Wegrabbedour 41 ...

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

下列叙述错误的是　　　　　　　　　　　　　　（　　）A．13C和14C属于同一种元素，它们互为同位素B．14C...

2021-05-19 问题详情：下列叙述错误的是（）A．13C和14C属于同一种元素，它们互为同位素B．14C和14N的质量数相等，它们的中子数不等C．6Li和7Li的电子数相等，中子数也相等D．1H和2H是不同的核素，它们的质子数相等【回答】C知识点：物质结构元素周期律...

“WASP-12b”可以造什么句，WASP-12b造句

2018-10-11 Theexoplanet,calledWASP-12b,isagasgiant,likeJupiter.WASP-12bisagaseousplanet,about1.5timesthemassofJupiter,andalmosttwicethesize.被叫作WASP-12b的行星是目前发现的最热的行星（约4，000华氏度，或约2，200摄氏度），相...

计算（﹣3）+（﹣9）的结果是（　　）　A．﹣12B．﹣6C．+6D．12

2021-12-29 问题详情：计算（﹣3）+（﹣9）的结果是（）A．﹣12B．﹣6C．+6D．12【回答】A知识点：各地中考题型：选择题...

已知*A＝{x|x2＋ax＋12b＝0}和B＝{x|x2－ax＋b＝0}，满足(∁RA)∩B＝{2}，A∩(...

2020-01-15 问题详情：已知*A＝{x|x2＋ax＋12b＝0}和B＝{x|x2－ax＋b＝0}，满足(∁RA)∩B＝{2}，A∩(∁RB)＝{4}，求实数a，b的值．【回答】解：由条件(∁RA)∩B＝{2}和A∩(∁RB)＝{4}，知2∈B，但2∉A；4∈A，但4∉B.将x＝2和x＝4分别代入B，A两*中的方程得即解得a＝，b＝－即为所求．知识点：*与...

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...

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...

Amanandhisgirlfriendweremarried.Itwasalarge 41 . A...

2021-04-01 问题详情： Amanandhisgirlfriendweremarried.Itwasalarge 41 . Alloftheirfriendsand42cametoseethelovelyceremonyandto43inthefestivitiesandcelebrations.Allhad awonderfultime.The bridewas ...

Onceuponatime,therewasapoorman.His 41 wasalsoverypoor—a...

2020-03-23 问题详情：Onceuponatime,therewasapoorman.His 41 wasalsoverypoor—asmallandemptyhouse,whichwas 42 withspiderwebs(蜘蛛网).Peopletriedto 43 comingintohishouseastheydidn’twanttocometosucha 44 place...

　A 41 thinghappened 42melastSunday．Itwassuchabeautifuld...

2020-08-03 问题详情：A 41 thinghappened 42melastSunday．Itwassuchabeautifulday 43 Idrovetogoforalookinthecountry.Onthewaybackhome,my 44 stopped．Itwasoutofgasona 45roadfarfromatown!IdecidedtowalkuntilIfounds...

“14c”可以造什么句，14c造句

2017-05-23 用14c示踪技术研究了金钗石斛光合产物运转与分配的变化。但是，对14c数据的系统校正，迄未得到应有的重视，致使在应用14c数据解释地层和地质现象的年代时，存在着一定程度的混乱。...

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...

Fastfoodisbecomingmoreand 41

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

Britishpeopleareworkingtoanolderage.41.

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

A 41 thinghappened 42 melastSunday.Itwassuchabeautif...

2020-02-13 问题详情：A 41 thinghappened 42 melastSunday.Itwassuchabeautifulday 43 Idrovetogoforalookinthecountry.Onthewaybackhome,my 44 stopped.Itwasoutofgasona 45 roadfarfromatown!Idecidedto...

热门标签