关于A.12B.14C.21D.41的文学精选
精彩的A.12B.14C.21D.41专题,是A.12B.14C.21D.41相关知识的精华点,学习中疑虑的A.12B.14C.21D.41方面内容,从A.12B.14C.21D.41专题开始,不再是难题,为网友们免费分享A.12B.14C.21D.41知识大全,A.12B.14C.21D.41知识精选,A.12B.14C.21D.41优质内容,没错,这里会有你需要A.12B.14C.21D.41知识内容的。
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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
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...
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下列计算正确的是( )A.(-0.875)×=B.-×(-6)=-3C.-7×(-3)=21D.(-...
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...
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14c造句
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。...
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41.Stayingupforplayingcomputergamesis
问题详情:41.Stayingupforplayingcomputergamesis_________(harm)tochildren’health. 42.TheUSisChina’sbiggestexportmarket,___________(account)formoreth...
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AtanairportIoverheardafatheranddaughterduringtheir 41 ...
问题详情:AtanairportIoverheardafatheranddaughterduringtheir 41 momentstogether.Her 42 wasreadyforboarding.Theyhuggedandhesaid,“Iloveyou.Iwishyou 43 ”Sheinturnsaid,“Daddy,Iwishyouenoug...
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Amanandhisgirlfriendweremarried.Itwasalarge 41 . A...
问题详情: Amanandhisgirlfriendweremarried.Itwasalarge 41 . Alloftheirfriendsand42cametoseethelovelyceremonyandto43inthefestivitiesandcelebrations.Allhad awonderfultime.The bridewas ...
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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...
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...
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MybrotherandIslippedoutofthebed.Wegrabbedour 41 ...
问题详情: MybrotherandIslippedoutofthebed.Wegrabbedour 41 andputonourshoes.Withoutheatersinouroldhome,wearingcoatsinsidewasas 42 aswearingshirtsinsummer. Butthismorningwas...
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41.Thustheprinceandtheprincesslived
问题详情:theprinceandtheprincesslived______(和平地)together.42.Movingtoanewhouseisavery_________(紧张的)experience.43.Hec_____(抱怨)thatnothingcameoutthewayhehadexpected.44.Suddenlyhereceivedan_____(紧...
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计算(﹣3)+(﹣9)的结果是( ) A.﹣12B.﹣6C.+6D.12
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...
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已知*A={x|x2+ax+12b=0}和B={x|x2-ax+b=0},满足(∁RA)∩B={2},A∩(...
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...
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A 41 thinghappened 42 melastSunday.Itwassuchabeautif...
问题详情:A 41 thinghappened 42 melastSunday.Itwassuchabeautifulday 43 Idrovetogoforalookinthecountry.Onthewaybackhome,my 44 stopped.Itwasoutofgasona 45 roadfarfromatown!Idecidedto...
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执行下面的程序框图,则输出的A. 17B. 19C. 21D. 23
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...
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41.MoststudentsinChinacan’tspeakEnglish
问题详情:studentsinChinacan’tspeakEnglish_____________(fluent).42._____________(determine)tomakehisdreamcometrue,hewenttoBeijingforfurtherstudy.problemisfarfrom___________(settle),sowewillhavetodiscus...
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ChristopherReeve, 41
问题详情:ChristopherReeve, 41__wasborninSeptember,1952,wasinhisfirstschoolplay 42__hewaseightandhestartedtoactinTVshowsandfilmswhilehewasstillincollege.Hemademany____43___(success)filmsandTVshowsbuth...
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Fastfoodisbecomingmoreand 41
问题详情:Fastfoodisbecomingmoreand 41 _____ popularinChina,especiallyamongchildrenandteenagers.Thereareseveralexplanationsfor itspopularity.First,itisveryconvenientand42 a...
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WASP-12b造句
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...
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Britishpeopleareworkingtoanolderage.41.
问题详情:Britishpeopleareworkingtoanolderage.41._____numberofworking70-74-year-oldshasdoubledinrecentyears.Around10%ofpeoplein42.______(they)early70snowwork.Thisisthe43.______(high)figureonrecord.Animp...
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31×41-11×41×2-9.5×11.
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...
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ItwasacoolOctoberevening.Excitementandfamilymembers 41...
问题详情:ItwasacoolOctoberevening.Excitementandfamilymembers 41 thehall.Iwasonlya7-year-oldgirl,butIwasthecenterof 42 .Finally,afterweeksofpreparation,Iwould 43 allmyhardworkinadanceper...
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I’vedreamedofbecomingawritersinceIwasateenager.But 41 ...
问题详情:I’vedreamedofbecomingawritersinceIwasateenager.But 41 isn’teasytogetabookofminepublished. 42 I’vetriedhard,noneofmybookshavebeenpublished.Thisisreally 43 (upset).Thismorni...
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A 41 thinghappened 42melastSunday.Itwassuchabeautifuld...
问题详情:A 41 thinghappened 42melastSunday.Itwassuchabeautifulday 43 Idrovetogoforalookinthecountry.Onthewaybackhome,my 44 stopped.Itwasoutofgasona 45roadfarfromatown!IdecidedtowalkuntilIfounds...
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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...
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...
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Onceuponatime,therewasapoorman.His 41 wasalsoverypoor—a...
问题详情:Onceuponatime,therewasapoorman.His 41 wasalsoverypoor—asmallandemptyhouse,whichwas 42 withspiderwebs(蜘蛛网).Peopletriedto 43 comingintohishouseastheydidn’twanttocometosucha 44 place...
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41.Ithinkheisnot
问题详情:41.Ithinkheisnot______(self).Hehasbeenconcernedwith peoplearoundhim.42.Millionsoffansadmirehisathleticability,_________(motivate)andconfidence.43.___________wewillgocampingtomorrowornotdepend...