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若代数式的值是常数2，则a的取值范围是（）。
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代数式x-1与x-2的值符号相同则x的取值范围________.
若代数式的值不大于代数式5k+1的值求k的取值范围．
代数式的值是常数2则a的取值范围是
a≥4
a≤2
2≤a≤4
a=2或a=4
若代数式有意义则实数x的取值范围是
若代数式在实数范围内有意义则x的取值范围是_______
若代数式的值是常数2则a的取值范围是．
若关于的代数式的取值范围是x≤2则这个代数式可以为写出一个即可
若代数式-3m+2的值是非负数则m的取值范围是．
若代数式的值与字母x的取值无关则m的值是
2
－2
－3
0
若代数式的值为常数2则a的范围为【】
a≥4
a≤2
2≤a≤4
a=2或a=4
若代数式的值不大于代数式5k﹣1的值则k的取值范围是．
若a-b=1则代数式a-b-2的值是____;若a+b=1则代数式5-a-b的值是____.
若代数式的值不小于-3则t的取值范围是.
写出一个只含字母x的代数式要求1要使此代数式有意义2字母x的取值范围为全体实数3此代数式的值恒为正数
若代数式的值为常数2则a的范围为
a≥4
a≤2
2≤a≤4
a＝2或a＝4
若代数式的值不小于代数式的值则x的取值范围是__________.
代数式1-k的值大于-1且不大于3则k的取值范围是________.
若代数式4x+13的值不小于代数式2x﹣1的值则x的取值范围是．
若代数式x﹣y的值为5则代数式2x﹣3﹣2y的值是__________.
若代数式的值小于2则的取值范围是________________
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余忆童稚时能张目对日明察秋毫见藐小之物必细察其纹理故时有物外之趣夏蚊成雷私拟作群鹤舞于空中心之所向则或千或百果然鹤也昂首观之项为之强又留蚊于素帐中徐啧以烟使之冲烟而飞呜作青云白鹤观果如鹤唳云端为之怡然称快余常于土墙凹凸处花台小草丛杂处蹲其身使与台齐定神细视以丛草为林以虫蚁为兽以土砾凸者为丘凹者为壑神游其中怡然自得一日见二虫斗草间观之兴正浓忽有庞然大物拔山倒树而来盖一癞虾蟆舌一吐而二虫尽为所吞余年幼方出神不觉呀然一惊神定捉虾蟆鞭数十驱之别院下列对本文语言的分析不正确的一项是
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Thesedayscarsaredesignedusingcomputers.Let’slookathowanewcariscreated.Firstseveral1talkaboutthenewearandanygoodideasthattheyhave.Thentheysitdownattheircomputersand2manysketches.Thebesttwoorthreedrawingsarechosenandthenmoredetaileddrawingsof3aredevelopedonthecomputer.Youcanchangethesizeshapeorcolourofanypartonthecomputertosee4thecarwouldlookandthenyoucanchoosethebestdesign.Boththeinsideandtheoutsideofthecarhavetobedesigned.Partoftheinsideofthecaris5sothatthedesignerscansitinit.Theycanfeelifthereisenough6insideandiftheycanreach7.Thensomecarsarebuilt—therearemorethan15000partsofacarto8.Wheneverythingisknowntobe9thecarsaremadeinthefactory.Againcomputersareusedtomakesurethatallthepartsare10astheyareneeded.Thefactoryusuallystaysopenallthroughthenightsothatthecarproductionneverstops. 第8空应选择
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Thesedayscarsaredesignedusingcomputers.Let’slookathowanewcariscreated.Firstseveral1talkaboutthenewearandanygoodideasthattheyhave.Thentheysitdownattheircomputersand2manysketches.Thebesttwoorthreedrawingsarechosenandthenmoredetaileddrawingsof3aredevelopedonthecomputer.Youcanchangethesizeshapeorcolourofanypartonthecomputertosee4thecarwouldlookandthenyoucanchoosethebestdesign.Boththeinsideandtheoutsideofthecarhavetobedesigned.Partoftheinsideofthecaris5sothatthedesignerscansitinit.Theycanfeelifthereisenough6insideandiftheycanreach7.Thensomecarsarebuilt—therearemorethan15000partsofacarto8.Wheneverythingisknowntobe9thecarsaremadeinthefactory.Againcomputersareusedtomakesurethatallthepartsare10astheyareneeded.Thefactoryusuallystaysopenallthroughthenightsothatthecarproductionneverstops. 第4空应选择
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B LikemanypeopleIhavenoclearideaaboutheroes.Atsomepointweallwonderifweneedaheroandwhataheroreallyis. Althoughtherearealotofdifferencesinculturesheroesaroundtheworldgenerallyshareanumberofcharacteristics特点whichgiveuscourageandmakeuswanttolearnfromthem. Aherodoessomethingworthtalkingabout.Aherohasaspecialstorytotellandpeoplethinkhighlyofit.Butaheroisnotjustthepersonwithgreatfame声誉. Aherohaspowers力量largerthanhimself.Somepeoplewanttolivelikeaheroandtheyhavetoexperiencelifewithnewandfurthermeaning.Asuretestforwould-beheroesiswhatorwhomtheyserve.WhatdotheywanttoliveanddieforIftheanswersuggeststheyserveonlytheirownfametheymaybefamouspersonsbutnotheroes. Aherohasavisionformthemountaintop.Hehasthepowertomovepeople.Hecreatesnewpossibilities.WithoutGandhiIndiamightstillbepartofBritain.WithoutMartinLutherKingJr.Americansmighttakedifferentbuseseatindifferentrestaurantsgoforwalksindifferentparksandshopindifferentstoresbecauseofthedifferentcoloursoftheirskin. Theremightbechangesinsocietywithoutaherobutthespeedofchangewouldberatherslow.Thankstoheroesinhistorytheymakethesocietydevelopsorapidly. Theunderlinedwordvisioninthepassagemeans.
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二一个女孩毫无道理地被老板炒了鱿鱼中午她坐在单位喷泉旁边的一条长椅上黯然伤神她感到她的生活失去了颜色变得黯淡无光这时她发现不远处一个小男孩站在她的身后咯咯地笑她好奇地问小男孩你笑什么这条长椅的椅背是早晨刚刚漆过的我想看看你站起来时背是什么样子小男孩说话时一脸得意的神情女孩一怔猛地想道昔日那些刻薄的同事不正和这小家伙一样躲在我的身后想窥探我的失败和落魄吗我绝不能让他们的用心得逞我绝不能丢掉我的志气和尊严女孩想了想指着前面对那个小男孩说你看那里那里很多人在放风筝呢等小男孩发觉自己受骗而恼怒地转过脸时女孩已经把外套脱掉拿在手里她身上穿的鹅黄色的毛线衣让她看起来青春且漂亮小男孩甩甩手嘟着嘴失望地走了生活中的失意随处可见真的就如那些油漆未干的椅背在不经意间让你苦恼不已但是如果已经坐上了也别沮丧以一种猝然临之而不惊无故加之而不怒的心态面对脱掉你脆弱的外套你会发现新的生活才刚刚开始!我们每个人生活都不可能一帆风顺读了这篇文章请结合自己的实际谈谈如何面对失意
BLikemanypeopleIhavenoclearideaaboutheroes.Atsomepointweallwonderifweneedaheroandwhataheroreallyis.Althoughtherearealotofdifferencesinculturesheroesaroundtheworldgenerallyshareanumberofcharacteristics特点whichgiveuscourageandmakeuswanttolearnfromthem.Aherodoessomethingworthtalkingabout.Aherohasaspecialstorytotellandpeoplethinkhighlyofit.Butaheroisnotjustthepersonwithgreatfame声誉.Aherohaspowers力量largerthanhimself.Somepeoplewanttolivelikeaheroandtheyhavetoexperiencelifewithnewandfurthermeaning.Asuretestforwould-beheroesiswhatorwhomtheyserve.WhatdotheywanttoliveanddieforIftheanswersuggeststheyserveonlytheirownfametheymaybefamouspersonsbutnotheroes.Aherohasavisionformthemountaintop.Hehasthepowertomovepeople.Hecreatesnewpossibilities.WithoutGandhiIndiamightstillbepartofBritain.WithoutMartinLutherKingJr.Americansmighttakedifferentbuseseatindifferentrestaurantsgoforwalksindifferentparksandshopindifferentstoresbecauseofthedifferentcoloursoftheirskin.Theremightbechangesinsocietywithoutaherobutthespeedofchangewouldberatherslow.Thankstoheroesinhistorytheymakethesocietydevelopsorapidly.Whatcanwelearnfromthepassage
A Thewatertapwasleaking漏水againandthenoisewasdrivingCassiecrazy. Cassielookedatherwatch.Itwasnearlynineo’clock.Sheclimbedoutofbedandstoodonachairbytheshelf.Hermother’sMr.Fix-Itwasonthetopshelf.Cassiesteppeddownquietly.Shereadthebookquicklyuntilshefoundthepageshewaslookingforandthenbegantoreadcarefully. NextCassieopenedaboxinthekitchenandpickedoutthetoolssheneeded—ahammerawrenchandseveralsmallthings.Itwasnoeasyjobforhertodotherepairandshetriedseveraltimes.Finallythewatertapwasinpieces.Onebyoneshecarefullylaidthemoutonthetable.Thatwayshewouldknowhowtheywentback.Whilethiswasgoingonhercatwalkedovertowatchwhatshewasdoing. Cassieworkedlateintothenight.Atonepointshethoughtshewasdone.Oops!Asmallpiecethatshehadforgottenstilllayonthetable.SlowlyCassietookthewatertapapart分开onemoretime.Thistimeshemadesureeverythingwasinplace.Sheturnedthewatertaponandthenoff.One...two...three...Shewaitedafullminute.Therewasnoleak!Cassiesmiledandputthetoolsbackintothebox.Thenshewentbackintobed. ThenextmorningDadwasinthekitchenwhenCassiegotup. "NoticeanythingDad"sheasked. Helookedaroundandlistened."Hmmsomething’smissing...Ican’tfindoutwhatitis...Waitit’stooquietinhere!" "That’sright"Cassiesaid."Somethingismissing.Ifixedthewatertap.Itdoesn’tleakanymore." "That’smygirl"Dadsaid."It’sagoodthingyouarereallylikeyourmother. Cassietookthewatertapapartagainbecause.
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Thesedayscarsaredesignedusingcomputers.Let’slookathowanewcariscreated.Firstseveral1talkaboutthenewearandanygoodideasthattheyhave.Thentheysitdownattheircomputersand2manysketches.Thebesttwoorthreedrawingsarechosenandthenmoredetaileddrawingsof3aredevelopedonthecomputer.Youcanchangethesizeshapeorcolourofanypartonthecomputertosee4thecarwouldlookandthenyoucanchoosethebestdesign.Boththeinsideandtheoutsideofthecarhavetobedesigned.Partoftheinsideofthecaris5sothatthedesignerscansitinit.Theycanfeelifthereisenough6insideandiftheycanreach7.Thensomecarsarebuilt—therearemorethan15000partsofacarto8.Wheneverythingisknowntobe9thecarsaremadeinthefactory.Againcomputersareusedtomakesurethatallthepartsare10astheyareneeded.Thefactoryusuallystaysopenallthroughthenightsothatthecarproductionneverstops. 第10空应选择
Thesedayscarsaredesignedusingcomputers.Let’slookathowanewcariscreated.Firstseveral1talkaboutthenewearandanygoodideasthattheyhave.Thentheysitdownattheircomputersand2manysketches.Thebesttwoorthreedrawingsarechosenandthenmoredetaileddrawingsof3aredevelopedonthecomputer.Youcanchangethesizeshapeorcolourofanypartonthecomputertosee4thecarwouldlookandthenyoucanchoosethebestdesign.Boththeinsideandtheoutsideofthecarhavetobedesigned.Partoftheinsideofthecaris5sothatthedesignerscansitinit.Theycanfeelifthereisenough6insideandiftheycanreach7.Thensomecarsarebuilt—therearemorethan15000partsofacarto8.Wheneverythingisknowntobe9thecarsaremadeinthefactory.Againcomputersareusedtomakesurethatallthepartsare10astheyareneeded.Thefactoryusuallystaysopenallthroughthenightsothatthecarproductionneverstops. 第2空应选择
D Koreanculture韩国文化isreallyexcitingrightnow.TheKoreanWaveissweepingAsiancountriesincludingChina.Youngpeoplearegoingcrazy疯狂的aboutKoreanTVplaysKoreanpopsongstaekwondoandtheKoreanlanguage. TheKoreanWavestartedafewyearsagowiththeTVseriesWinterSonata.Thislovestoryisstillpopular.Peopleespeciallygirlslikethebeautifulstoryandgood-lookingactors演员likeBaeYongJun. InthemusicworldKoreangirlsaremakingthemselvesheardinChina.YoucanoftenfindbigKoreannameslikeBabyVoxS.E.SandFinkleatthetopoftheChinesemusiccharts排行榜. TheKoreanWavehasalsomakeyoungpeoplewanttotrytheclothesandhairstylesofpopstarstoo.Notonlythat.NowsomegirlsinChinaarehavingplasticsurgery整容tochangethewaytheylook.PeoplesaysomebeautifulKoreanstarshavehadplasticsurgery.Thesestarsdon’tmakeplasticsurgerylookshameful丢面子的. AreallthefacesofbeautifulKoreangirlsnotrealFindoutforyourselfwhenyounextvisitSouthKorea. TheKoreanWaverefersto指
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余忆童稚时能张目对日明察秋毫见藐小之物必细察其纹理故时有物外之趣夏蚊成雷私拟作群鹤舞于空中心之所向则或千或百果然鹤也昂首观之项为之强又留蚊于素帐中徐啧以烟使之冲烟而飞呜作青云白鹤观果如鹤唳云端为之怡然称快余常于土墙凹凸处花台小草丛杂处蹲其身使与台齐定神细视以丛草为林以虫蚁为兽以土砾凸者为丘凹者为壑神游其中怡然自得一日见二虫斗草间观之兴正浓忽有庞然大物拔山倒树而来盖一癞虾蟆舌一吐而二虫尽为所吞余年幼方出神不觉呀然一惊神定捉虾蟆鞭数十驱之别院将文中的成语摘录在横线上
Thesedayscarsaredesignedusingcomputers.Let’slookathowanewcariscreated.Firstseveral1talkaboutthenewearandanygoodideasthattheyhave.Thentheysitdownattheircomputersand2manysketches.Thebesttwoorthreedrawingsarechosenandthenmoredetaileddrawingsof3aredevelopedonthecomputer.Youcanchangethesizeshapeorcolourofanypartonthecomputertosee4thecarwouldlookandthenyoucanchoosethebestdesign.Boththeinsideandtheoutsideofthecarhavetobedesigned.Partoftheinsideofthecaris5sothatthedesignerscansitinit.Theycanfeelifthereisenough6insideandiftheycanreach7.Thensomecarsarebuilt—therearemorethan15000partsofacarto8.Wheneverythingisknowntobe9thecarsaremadeinthefactory.Againcomputersareusedtomakesurethatallthepartsare10astheyareneeded.Thefactoryusuallystaysopenallthroughthenightsothatthecarproductionneverstops. 第6空应选择
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在生活中有许多美是潜藏着的需要我们用细心和创新去发现请以品味生活隐藏的美为话题写一篇600字以上的文章
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B LikemanypeopleIhavenoclearideaaboutheroes.Atsomepointweallwonderifweneedaheroandwhataheroreallyis. Althoughtherearealotofdifferencesinculturesheroesaroundtheworldgenerallyshareanumberofcharacteristics特点whichgiveuscourageandmakeuswanttolearnfromthem. Aherodoessomethingworthtalkingabout.Aherohasaspecialstorytotellandpeoplethinkhighlyofit.Butaheroisnotjustthepersonwithgreatfame声誉. Aherohaspowers力量largerthanhimself.Somepeoplewanttolivelikeaheroandtheyhavetoexperiencelifewithnewandfurthermeaning.Asuretestforwould-beheroesiswhatorwhomtheyserve.WhatdotheywanttoliveanddieforIftheanswersuggeststheyserveonlytheirownfametheymaybefamouspersonsbutnotheroes. Aherohasavisionformthemountaintop.Hehasthepowertomovepeople.Hecreatesnewpossibilities.WithoutGandhiIndiamightstillbepartofBritain.WithoutMartinLutherKingJr.Americansmighttakedifferentbuseseatindifferentrestaurantsgoforwalksindifferentparksandshopindifferentstoresbecauseofthedifferentcoloursoftheirskin. Theremightbechangesinsocietywithoutaherobutthespeedofchangewouldberatherslow.Thankstoheroesinhistorytheymakethesocietydevelopsorapidly. Accordingtothispassageaheroisapersonwhoalways.
A Thewatertapwasleaking漏水againandthenoisewasdrivingCassiecrazy. Cassielookedatherwatch.Itwasnearlynineo’clock.Sheclimbedoutofbedandstoodonachairbytheshelf.Hermother’sMr.Fix-Itwasonthetopshelf.Cassiesteppeddownquietly.Shereadthebookquicklyuntilshefoundthepageshewaslookingforandthenbegantoreadcarefully. NextCassieopenedaboxinthekitchenandpickedoutthetoolssheneeded—ahammerawrenchandseveralsmallthings.Itwasnoeasyjobforhertodotherepairandshetriedseveraltimes.Finallythewatertapwasinpieces.Onebyoneshecarefullylaidthemoutonthetable.Thatwayshewouldknowhowtheywentback.Whilethiswasgoingonhercatwalkedovertowatchwhatshewasdoing. Cassieworkedlateintothenight.Atonepointshethoughtshewasdone.Oops!Asmallpiecethatshehadforgottenstilllayonthetable.SlowlyCassietookthewatertapapart分开onemoretime.Thistimeshemadesureeverythingwasinplace.Sheturnedthewatertaponandthenoff.One...two...three...Shewaitedafullminute.Therewasnoleak!Cassiesmiledandputthetoolsbackintothebox.Thenshewentbackintobed. ThenextmorningDadwasinthekitchenwhenCassiegotup. "NoticeanythingDad"sheasked. Helookedaroundandlistened."Hmmsomething’smissing...Ican’tfindoutwhatitis...Waitit’stooquietinhere!" "That’sright"Cassiesaid."Somethingismissing.Ifixedthewatertap.Itdoesn’tleakanymore." "That’smygirl"Dadsaid."It’sagoodthingyouarereallylikeyourmother. Wecanlearnfromthelastsentenceofthepassagethat.
启发式教学是一种具体的教学方法
三蚁族蚁族指的是那些聚居于城中村收入不高工作不稳定的高校毕业生低收入聚居群体据统计仅北京一地就有至少10万蚁族而在全国这一群体拥有上百万规模和数量在这群怀揣理想面对现实的蚂蚁面前讲励志故事谈成功之道没有多少意义因为没有人比他们更加理解这些词汇的涵义在他们面前剖析高等教育弊端指责房价飙升感慨工作难找也特别不合时宜他们正是这一切的目击者和受害者生长环境教育背景及个人禀赋理想追求人生际遇在很大程度上决定了一个人所走的道路从这角度看蚁族并非一个彷徨无助盲目漂泊的群体他们只是在各种现实考量与利益权衡中作出相对来讲最不坏的选择据调查这群人绝大多数来自经济欠发达地区大部分人是从外地高校毕业后到大城市找工作在城市化进程中为了登上时代的列车这就是他们所必须跨出的艰难一步虽然目前他们工作不稳定生活几近无着但未来却还有着很多可能但如果返回农村或小城也许他们这辈子就只能成为时代的旁观者这是商业社会的一个赤裸裸硬邦邦的生存逻辑正因如此许多蚂蚁从来就没有想过放弃家乡太小放不下我的理想这句话想必道出了大部分蚂蚁的心声在经济快速发展和社会转型大背景下产生的蚁族现象关涉地区差异高等教育大学生就业房地产价格等诸多社会问题而一个城市怎样对待外来人员既能够体现这个城市的襟怀与底蕴同时也是城市发展的重要课题城市管理者首先应设法让这些群体获得相对低廉卫生的居住环境条件允许的话还应当建造若干廉价公寓使之成为蚁族居住和工作的中转站更为重要的是政府有责任为这个群体创造一个机会均等的就业环境这是蚁族一切努力与奋斗的力量来源生活条件差一些工资收入低一些这些困难都不足以让蚂蚁们退缩但是倘若一个城市存在严重的就业歧视动辄对外来人员刻意抬高就业门槛这将轻易地击败他们的信心底线使他们不得不黯然面对灰色的人生调查显示29.27%的受访者把平等的工作机会列为希望政府提供帮助的首选在现实世界中固然不可能存在理想的完全平等的就业环境然而取消户籍学历性别等多方面人为限制却是具有现代眼光的城市管理者所必须做的功课蚁族现象的产生关涉地区差异高等教育大学生就业房地产价格等诸多社会问题下列不属于文中所提的解决诸多社会问题建议的一项是
余忆童稚时能张目对日明察秋毫见藐小之物必细察其纹理故时有物外之趣 夏蚊成雷私拟作群鹤舞于空中心之所向则或千或百果然鹤也昂首观之项为之强又留蚊于素帐中徐啧以烟使之冲烟而飞呜作青云白鹤观果如鹤唳云端为之怡然称快 余常于土墙凹凸处花台小草丛杂处蹲其身使与台齐定神细视以丛草为林以虫蚁为兽以土砾凸者为丘凹者为壑神游其中怡然自得 一日见二虫斗草间观之兴正浓忽有庞然大物拔山倒树而来盖一癞虾蟆舌一吐而二虫尽为所吞余年幼方出神不觉呀然一惊神定捉虾蟆鞭数十驱之别院 解释下列各句中加点的字 1项为之强2果如鹤唳云端 3徐喷以烟4盖一癞虾蟆 5昂首观之6驱之别院
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