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若集合M={x|x<2},N={x|log2(x﹣1)<1},则M∩N=( )
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高三下学期数学《》真题及答案
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已知集合M.={012}N.={x|x=2aa∈M.}则集合M.∩N.=___________.
已知集合M={x|-1
已知集合M={0x}N={12}若M∩N={1}则M.∪N=______.
设集合M={x│0≤x
{x│0≤x<1}
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设全集I.=R.已知集合M.={x|x+32≤0}N.={x|x2+x-6=0}.1求∁I.M.∩N
下列集合中表示同一集合的是
M.={(3,2)},N.={(2,3)}
M.={3,2},N.={2,3}
M.={(x,y)|x+y=1},N.={y|x+y=1}
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若集合M.={0l2}N.={xy|x-2y+1≥0且x-2y-1≤0xy∈M}则N.中元素的个数为
9
6
4
2
设集合M.={x|-1≤x
(-∞,2]
[-1,+∞)
(-1,+∞)
[-1,2]
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已知集合M.={x|x<2且x∈N}N.={x|-2<x<2且x∈Z}.1写出集合M.的子集;2写出
设集合M.={x|2x2-5x-3=0}N.={x|mx=1}若N.⊆M.则实数m的取值集合为___
若集合M={x|﹣2≤x<2}N={012}则M∩N=
{0}
{1}
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{0,1}
已知集合M={x|x>1}N={x|﹣3<x<2}则集合M∩N等于
{x|﹣3<x<2}
{x|﹣3<x<1}
{x|1<x<2}
{x|2<x<3}
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5分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∧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. ThedaybeforeyesterdayIwenttothebookstorewhereisnearourschooltobuyareferencebook.ItwasSaturdaysotherewasmanypeople.WiththehelpabouttheshopassistantsIquicklygotthebookIneeded.IwasabouttoleavewhenIfoundsomeonetryingtostealamanmoney.AlthoughIwasnervousbutItriedtothinkofawaytohelphim.Suddenlyagoodideacameme.Isteppedontheman'sfootonpurpose.AsIexpectedtheman'sscreamgivesthethiefafrightwhoquickwalkedoutoftheshop.Afterhearmyexplanationthemansmiledandshowedgreatgratitudetohim.
工业上可用食盐和石灰石为主要原料经不同的方法生产纯碱.请回答下列问题 1路布兰法是以食盐石灰石浓硫酸焦炭为原料在高温下进行煅烧再浸取结晶而制得纯碱. ①食盐和浓硫酸反应的化学方程式为 ②硫酸钠和焦炭石灰石反应的化学方程式为已知产物之一为CaS 2氨碱法的工艺如图1所示得到的碳酸氢钠经煅烧生成纯碱. ①图中的中间产物C是D是写化学式 ②装置乙中发生反应的化学方程式为 3联合制碱法是对氨碱法的改进其优点是 4有人认为碳酸氢钾与碳酸氢钠的化学性质相似故也可用氨碱法以氯化钾和石灰石等为原料制碳酸钾.请结合如图2的溶解度S随温度变化曲线分析说明是否可行.
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8分HalfayearbeforegraduationfromcollegemysonDavidbegantoseekajob.Duetothefinancialcrisisthecompetitionwasever﹣fierce.Mysontargetedacompanythatwaslocatedinacoastalcity.ItwasintendedtoemployonlyonepersonamongmorethantwentycandidatesIsaidtoDavidYoushouldnotharbortoomuchhopeforfearthatyouwouldfeelterriblydisappointedwhenyoufail.HesaidtomeIamnotafraidofdisappointment.AslongasItrytherewillalwaysbehope! Threeyoungmencouldenterthefinalroundwhichwouldlaterdecideonepersontobeemployed.EverythingseemedtogoquitewellandDavidenteredthefinalroundinaweek. Unexpectedlytheinterviewwasunbelievablysimpleduringwhichtheintervieweronlychattedwiththemforawhile.Theinterviewstrategiesmysonpreparedwerenotusefulatall.Theinterviewersaidthecompanywouldinformthemoftheresultin3days.OnthemorningofthethirddayDavidreceivedthetextfromthecompanythathewasnotemployed.Davidfeltdisappointed. InnightfallthatdayDavidsuddenlytoldmeexcitedlyonphonethathehadbeenemployed.GreatlysurprisedIaskedhimWhat'sthewholematter?Davidtoldmethathereceivedanothertextsayingthathewasemployed.Davidfeltveryconfusedaboutit.Laterhefoundoutthefirsttextsenttohimwasalsopartofthetestintheinterview.ThreemenreceivedthesametextthismorningandonlyDavid'sreplywassatisfyingtothecompany.IaskedmysonHowdidallofyourreply?MysonsaidOnedidnotreply.Theothersaid‘Goodbye'andIsaid‘Thankyou'. OnlythendidIknowthatmyson'shopecameinthatway.ThatiswhenyoufeeldisappointeddonotforgettosayThankyoutotheonewhodisappointsyou.ActuallyitisapieceofcaketosayThankyou.SayingThankyoushowsrespectforothers'workanddemonstratesyourgrandgenerosity.Thereforewhileunderthesameconditionyouwillgettheupperhandintermsofopportunitiescomparedwithothers! 28.WhatcanwelearnaboutDavidfromthepassage? A.BeingshortofmoneyDavidwaseagertofindajob. B.Hewantedtoworkforacompanyinthelocalcity. C.Hewasnothopefulofgettingthejob. D.Hetookapositiveattitudetowardsfailure. 29.WhichofthefollowingistrueaboutDavid'sfinalroundinterview? A.Davidwasnervousbecausethecompetitionwasreallyfierce. B.David'spreparationsfortheinterviewwerenotused. C.Thethreeyoungmenperformedequallywell. D.Theresultwasannouncedonthespot. 30.WhenDavidgotthejobofferhefeltatfirst. A.excitedB.puzzledC.nervousD.pleased 31.Whatcanbethebesttitleofthepassage? A.SunshineAlwaysAppearsAfterStorm B.NeverGiveUpHope C.TheMagicPowerofThankYou D.AYoungManAndHisHope.
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