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解比例.8:30=24:x 6.5:x=3.25:417:2=34:x 27:9=24:x.
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高二下学期数学《》真题及答案
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下列说法中错误的是
不等式x<5的整数解有无数多个
不等式x>-5的负数解有无限个
不等式-2x<8的解集是x<-4
-40是不等式2x<-8的一个解
反比例函数y=﹣当y≤3时x的取值范围是.
x6=114求x的值叫做解比例. 判断对错
下列说法中错误的是
不等式X<5的整数解有无数多个
不等式X>-5的负整数解有有限个
不等式-2X<8的解集是X<-4
-40是不等式2X<-8的一个解
x=4是比例的解
2.6:x=1:8
3:6=x:8
2.5:x=0.4:0.2
已知点A﹣m是反比例函数y=图象上的一点则m的值为.
设fxy连续且其中D是由y=xy=0x=1所围区域则fxyxy=______.
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—Doyouknow? —Thisafternoon. A.whenwillthepolicemangiveusatalk B.wherewillthepolicemangiveusatalk C.whenthepolicemanwillgiveusatalk D.wherethepolicemanwillgiveusatalk
MarycalledmemanytimesyesterdaybutIdidn'tup.
It'sunbelievablethatcatscanreactmuchrapidthantigers.
Theycomplainedthatthecitywashotterandnoisy.
请结合下图回答问题 1写过氧化氢分解反应方程式 2用过氧化氢制氧气的发生装置与其他两种方法的装置相比具有的优点 3用过氧化氢制氧气的发生装置选择选择依据是 4若用E图装置收集一瓶氧气气体应从填a或b端进入集气瓶
直接写出得数.150÷5=800÷2=900÷3=600÷3=210÷7=630÷7=2400÷6=4000÷8=529÷6≈715÷8≈904÷9≈441÷5≈360÷5≈178÷6≈358÷9≈269÷3≈
把下面的假分数化成整数或带分数把小数化成分数2411= 5117= 0.35= 2.5= .
如图正六边形ABCDEF关于直线l的轴对称图形是六边形A′B′C′D′E′F′下列判断错误的是
808÷4的商是22. .判断对错
口算25+45=24×3=90÷30=120-90=12+28=150×6=180÷6=8×25=60÷15=75+25=28÷28÷4=35+27-12=24-9÷3=3×6+22=
You'llsurelyifyoudon'tgoalloutforyourdreamnowespeciallyinyourlastyearofjuniorhighschool.
一个分数化成小数后是0.45如果这个分数的分子缩小到原来的13分母扩大到原来的3倍再化成小数是多少
ThereisatempleatthefootofNanShanandanancientbanyanisinfrontofit.Onemorningayoungmonkgetsuptocleantheyardandseesthe1.leavesfromtheancientbanyanareeverywhere.hecan'thelp2.andlooksatthetreesighing.Herushestohismaster'sroomwhenthemasterseesthemonk's3.hethinkssomethingtakesplacesohehurriestoaskhimMydisciplewhatdoyouworryaboutsomuchintheearly4.?Theyoungmonkis5.ofdoubtandtellshimMasteryoutellustoworkhardtohaveourcharacterandgraspthetruthdayandnightbut6.Ilearnthemwellitis7.toavoiddying.Aren'twejustlikethefallenleavesinautumnorthedeadwoodinwinter?Andwillwebeburied8.soil?Afterhearingittheoldmonkpointsatthebanyanandsaystotheyoungmonk.youdon'tneedtoworryaboutthis.Infactthefallenleavesinautumnandthe9.inwinterwillcomebacktothetreesquietlyandbecometheflowersin10.andgrowupintotheleavesinsummer.Whydon'tIseeit?Itisthereasonthatthereisn'tany11.inyourheartsoyoucan'tseethebloom.Imagingthatthefallenleaveswillbebuditneedstohaveanimmortalofspringheartanoptimismof12..Therearealwayssome13.thingsyouwillmeetinyourwholelifeandbeatyouwhenyouareunpreparedbutyoudon'tneedtoworrydayafterdayforthearrivalofthisday.andfeelsorryfor14..Treatingthelifewiththeattitudeoftheoptimismitcannotonly15.thesadnessandmisfortunebutalsobringakindofpleasedmoodtoyoueverydayandyourlifebrighterandbrighter.Aslongastheviewisintheheartaren'ttheroadsfulloffragranceofflowerseverywhere? 1.A.beautiful B. broken C. fallen D.green 2.A.worrying B. crying C. laughing D.jumping 3.A.words B. look C. eyes D. sound 4.A.morning B. noon C. afternoon D. evening 5.A.proud B. filled C. full D empty 6.A.if B. because C. so D. eventhough 7.A.easy B. different C. important D. hard 8.A.by B. with C. in D.on 9.A.tree B. deadwood C. flowers D.fun 10.A.spring B. summer C. autumn D.winter 11.A.view B.imagination C.thinking D. fun 12.A.head B.eyes C.heart D. ears 13.A.good B.bad C.wonderful D. happy 14.A.us B.him C.ourselves D. yourself 15.A.end B.keep C.start D. begin
—Doyouyoursonafterschool? —No.Hecomesbackhomeontheschoolbus. A.pickup B.lookafter C.dropin D.sendfor
Youcanchattootherpeopleinsteadofhavingaface-to-faceconversation.
355除以6余数是
—Whyareyouallwet?—ItrainedandIdidn'ttakemyumbrella.A.completely B.suddenly C.comfortably D.differently
用 258000组成的六个数中一个零也不读的是 只读一个零的是 .三百零六万零二百写作 精确到万位是 .
列竖式计算.带※的要求验算69×87=57×69=75×80=※843÷6 332÷4=※906÷3=
点A和点B62在同一行与点C27在同一列则点A的位置是22 .判断对错
做一节长4分米宽3分米高5米的长方体通风管至少需要铁皮多少平方分米做12节这样的通风管呢
小红在洗苹果时逐渐向盆中加水看到如图所示的情景1比较AB两图可知图中苹果受到的浮力较大从B图可以判断苹果的密度填大于等于或小于水的密度.2分析BC两图可知浮力大小与容器中水的多少选填有关或无关.3小红又拿来一个装水的大量筒水的体积为V1借助这个量筒测出了苹果的密度①在C图中她轻轻取出苹果将量筒中的水倒入盆中当盆中的水被填满时量筒中剩余水的体积为V2.②小红用针把苹果完全压入盛满水的盆中水从盆中溢出后再取出苹果并继续将量筒中的水倒入盆中当盆中的水再次被填满时量筒中剩余水的体积为V3.③苹果密度的表达式ρ=.4如果把C图中的水换成盐水苹果静止时露出液面的体积将.
把假分数化成整数或带分数279 257 375.
Mr.Smithhadasmallsupermarketinasmalltown.Allthepeoplewholivednearby1togotohissupermarketandbuythingsthere.Butseveralyearsagoabigchainedstore2inthatareaanditsoldallkindsofthingsfromthetoothbrushtoTVandaboveallthepricewaspretty3.Soalotofsmallshops4exceptMr.Smith's.Themanagerofthechainedstorewantedtoexplore5washiddenbehindMr.Smith'ssuccesssohedecidedtodropintoMr.Smith'ssupermarketandhesawaladybuyingthingsthere.Hestoppedher6andasked'Madamwhydon'tyougotothebigchainedstore'Withasmiletheladytoldhimitwasbecauseofapairofshoes.Shetoldhimastory.Threeyearsago7herdivorce离婚sheworkedhardtoraiseherfamilyandonedaywhensheboughtthingsinasupermarketTomoneofherlittlechildren8thesupermarketandaskedhertobuyhimanewpairofshoes.Hecried'TodayIhadabasketballmatchbutallthepeople9mebecauseoftheshoes.'Shewantedtobuyhimapairofshoesbutthemoneyinherpocketwas10enoughforamilk.'IamsorrybutI11whenwehavemoney'themothersaid.SeeingthattherewasnohopeTomranaway.Thewomanstoodthereweeping哭泣.Latersherealizedthat12waspattingonherback.13shefounditwasMr.Smith.Hetookapairofshoesthatthesonwantedtobuy.'Takethem'hesaid.'ButIdon'thaveenoughmoney'thewomanshookherhead.'Takethemyoursoncan'twait.Youcanpaymelater'Mr.Smithtoldher.Nowthemanagerofthechainedstoreknewthe14forMr.Smith'ssuccess.HedecidedthathewouldfollowinMr.Smith'sfootstepsputtinghisheartintowhateverhedidwiththehopeofattractingmorecustomers.Andhedidsoaftertheyearsthatfollowedwhichalso15. 1.A.disliked B.liked C.refused D.decided 2.A.disappeared B.reached C.appeared D.entered 3.A.low B.wrong C.unfair D.high 4.A.turnedoff B.openedup C.showedup D.closeddown 5.A.who B.why C.how D.what 6.A.rudely B.politely C.loudly D.proudly 7.A.before B.after C.until D.since 8.A.calledin B.droppedby C.rushedinto D.passedby 9.A.laughedat B.quarreledwith C.believedin D.madefriendswith 10.A.normally B.mainly C.only D.surely 11.A.doubt B.expect C.imagine D.promise 12.A.anybody B.everybody C.somebody D.nobody 13.A.Lookingahead B.Turningaround C.Turningdown D.Comingback 14.A.rule B.answer C.meaning D.reason 15.A.made B.accepted C.worked D.suggested
空气是宝贵的自然资源下图是以空气等为原料合成尿素[CONH22]的流程.请按要求回答相关问1空气属于填纯净物或混合物X是2图中分离空气的过程属于变化填物理或化学.3天然气的主要成分是天然气属于再生资源填可或不可4完成天然气燃烧化学反应方程5尿素属于填氮肥磷肥或钾肥写出NH3合成尿素的化学反应方程式
TheWanderingEarthhasgainedagoodmovieandahighboxoffice票房.
依次填写下述仪器的名称
列式计算.1已知圆柱的底面直径是4分米高是直径的5倍求它的体积.2已知圆锥的底面周长是25.12厘米高是30厘米求它的体积.
Johnishonestboy.Everyonelikestobefriendswithhim.A.a B.an C.the D./
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