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如图，将正方形网格放置在平面直角坐标系中，其中每个小正方形的边长均为1，△ABC经过平移后得到△A1B1C1，若AC上一点P（1.2，1.4）平移后对应点为P1，点P1绕原点顺时针旋转180°，对应...
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将2×2的正方形网格如图所示的放置在平面直角坐标系中每个小正方形的顶点称为格点每个小正方形的边长都
3
2
1
在6×8的正方形网格中建立了如图所示的平面直角坐标系已知每个最小正方形边长为1将图中的OA绕O.点逆
如图平面直角坐标系的原点O.是正方形ABCD的中心顶点A.B.的坐标分别为11-11把正方形ABCD
在如图所示的正方形网格中每个小正方形的边长为1格点三角形顶点是网格线的交点的三角形ABC的顶点A.C
将2×2的正方形网格如图放置在平面直角坐标系中每个小正方形的顶点称为格点每个小正方形的边长都是1正
在如图所示的正方形网格中每个小正方形的边长为1格点三角形顶点是网格线的交点的三角形ABC的顶点A.C
如图把正方形铁片OABC置于平面直角坐标系中顶点A.的坐标为30点P.12在正方形铁片上将正方形铁片
如图建立平面直角坐标系正方形ABFG和正方形CDEF中使点B.C.的坐标分别为﹣40和001写出A.
在如图所示的正方形网格中每个小正方形的边长为1格点三角形顶点是网格线的交点的三角形ABC的顶点A.C
在如图所示的正方形网格中每个小正方形的边长为1格点三角形顶点是网格线的交点的三角形ABC的顶点A.C
在如图所示的正方形网格中每个小正方形的边长为1格点三角形顶点是网格线的交点的三角形ABC的顶点A.C
在如图所示的正方形网格中每个小正方形的边长为1格点三角形顶点是网格线的交点的三角形ABC的顶点A.C
平面直角坐标系中将正方形向上平移3个单位后得到的正方形各顶点与原正方形各顶点坐标相比
横坐标不变,纵坐标加3
纵坐标不变,横坐标加3
横坐标不变,纵坐标乘以3
纵坐标不变,横坐标乘以3
如图在正方形网格中每个小正方形的边长都为1点A.点B.在网格中的位置如图所示.1建立适当的平面直角坐
将2×2的正方形网格如图所示的放置在平面直角坐标系中每个小正方形的顶点称为格点每个小正方形的边长都
3
2
1
如图正方形网格中每一个小正方形的边长均为1每个小正方形的顶点称为格点如图所示建立平面直角坐标系ΔAB
将2×2的正方形网格如图所示的放置在平面直角坐标系中每个小正方形的顶点称为格点每个小正方形的边长都
3
2
1
在如图所示的正方形网格中每个小正方形的边长为1格点三角形顶点是网格线的交点的三角形ABC的顶点A.C
将2×2的正方形网格如图放置在平面直角坐标系中每个小正方形的顶点称为格点每个小正方形的边长都是1正方
k≤2
k≥
≤k≤2
＜k＜2
在如图所示的方格纸中每个小正方形的边长为1如果以MN所在的直线为y轴以小正方形的边长为单位长度建立平
点与
点关于原点对称，则这时
点的坐标可能是 （ ）
A.(1，3)B.(2，-1)C.(2，1)
(3，1)
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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:在错的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. TheoldsayingTheearlybirdcatchesthewormshowustheimportanceofplanningworkinghardandtryingconstant.Toachieveoutstandingresultsmostpeoplemustplanaheadandworkdiligentlytoovercomeallkindofdifficulties. Thathasbeenmyownexperienceeither.WhenIfirststartedhighschoolIseldompassedrayexamssoIneverpreparedwell.LatermyteacherMr.Blackadvisedmeplaneverythingintheadvance.Sheaskedmetostudyhardaswell.AfterayearofputtinghisadviceontopracticeIcannoweasilypassallmyexams.Therearenoshortcutstosucceed.
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.作文中共有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Λ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:在错的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. Thisismyfifthdayatthesummercamp.Lifeisn'texactwhatIexpected.WehavetogetupearlytomakeourbedsbeforeourteacherMissLicometoinspect.Afterbreakfastwehavesomeoffreetime.YesterdaymorningIwentfishingbuttheonlythingIcatchwasatreebranch.Intheafternoontherearedifferentactivitylikehorsebackridingandhiking.They'refunsonothingnewforme.Intheeveningeveryoneisassignedadifferenttasktogetdinnerready.YesterdayIwasinchargeofpreparethehotdogsbutIaccidentallydroppeditinthefire.Thebestpartofcampisatnightwherewesitaroundacampfireandtellstories.
下列变化属于化学变化的是
化学就在我们身边．现有①石墨②氯化钠③稀硫酸等几种物质．选择适当的物质填空填序号 1可用于金属表面除锈的是 2可用于配制生理盐水的是 3可作干电池电极的是．
Joyce:Whatdoyouthinkoftheleadteacher'sspeech? Caroline:Ithinkitwas1interest. Joyce:2doI.IhearMikeislikelytowinalltheprizesintheexamsthisyear. Caroline:Yeshisteachersaysso.He3workhardathislessonseveryeveningformonths.HewanttogotoOxfordUniversitynextyear. Joyce:Ihopehewillrealizehisgoal. Caroline:Ihopeso.4Ithinkheworkstoohard.Ihopehe'llgooutandenjoy5forachange.HowaboutyoursonCarl? Joyce:Don'tmentionhim.Carlneverstartsstudying. Caroline:You'rejoking.IheardthatCarl6winthecompositionprize. Joyce:Youhavemade7mistake.ThatisWhiteCarl.MysonisBrownCarl.Thewhitesliveinthesamecommunity8wedo.WhiteCarlhasalwaysbeensohardworking.Hewantstobea9write.Mysonlikesgoingtotheconcert.Heonlylikessinging. Caroline:10hepracticessinginghewillbecomeasingerinthefuture. Joyce:Notallpeoplecanbecomeasinger.Idon'tthinkhehasthetalent.
A﹣G是初中常见的物质其中E为黑色固体．如图为这些物质的转化关系其中部分生成物和反应条件已省略． 1写出下列物质的化学式C． 2B→D转化过程的基本反应类型是． 3写出E→G的化学方程式．
MoneyspentonadvertisingismoneyspentaswellasanyIknowof.Itservesdirectlytoassistarapiddistributionofgoodsatreasonablepricestherebyestablishingafirmhomemarketandsomakingitpossibletoprovideforexportatcompetitiveprices.Bydrawingattentiontonewideasithelpsenormouslytoraisestandardsofliving.Byhelpingtoincreasedemanditensuresanincreasedneedforlabourandisthereforeaneffectivewaytofightunemployment.Itlowersthecostsofmanyservices:withoutadvertisementsyourdailynewspaperwouldcostfourtimesasmuchthepriceofyourtelevisionlicensewouldneedtobedoubledandtravelbybusortubewouldcost20percentmore. Andperhapsmostimportantofalladvertisingprovidesaguaranteeofreasonablevalueintheproductsandservicesyoubuy.Apartfromthefactthattwenty﹣sevenActsofParliamentgovernthetermsofadvertisingnoregularadvertiserdarepromoteaproductthatfailstoliveuptothepromiseofhisadvertisements.Hemightfoolsomepeopleforalittlewhilethroughmisleadingadvertising.Hewillnotdosoforlongformercifullythepublichasthegoodsensenottobuytheinferiorarticlemorethanonce.IfyouseeanarticleconsistentlyadvertiseditisthesurestproofIknowthatthearticledoeswhatisclaimedforitandthatitrepresentsgoodvalue. AdvertisingdoesmoreforthematerialbenefitofthecommunitythananyotherforceIcanthinkof. ThereisonemorepointIfeelIoughttotouchon.RecentlyIheardawell﹣knowntelevisionpersonalitydeclarethathewasagainstadvertisingbecauseitpersuadesratherthaninforms.Hewasdrawingexcessivelyfinedistinctions.Ofcourseadvertisingseekstopersuade. Ifitsmessagewereconfinedmerelytoinformation﹣andthatinitselfwouldbedifficultifnotimpossibletoachieveforevenadetailsuchasthechoiceofthecolourofashirtissubtlypersuasive﹣advertisingwouldbesoboringthatnoonewouldpayanyattention.Butperhapsthatiswhatthewell﹣knowntelevisionpersonalitywants. 1Bythefirstsentenceofthetexttheauthormeansthat. A.heisfairlyfamiliarwiththecostofadvertising B.everybodyknowswellthatadvertisingismoneyconsuming C.advertisingcostsmoneylikeeverythingelse D.itisworthwhiletospendmoneyonadvertising 2InthetextwhichofthefollowingisNOTincludedintheadvantagesofadvertising? A.Securinggreaterfame. B.Providingmorejobs. C.Enhancinglivingstandards. D.Reducingnewspapercost. 3Theauthorthinksthatthewell﹣knownTVpersonalityis. A.verypreciseinpassinghisjudgementonadvertising B.interestedinnothingbutthebuyers'attention C.correctintellingthedifferencebetweenpersuasionandinformation D.obviouslypartialinhisviewsonadvertising 4Intheauthor'sopinion. A.advertisingcanseldombringmaterialbenefittomanbyprovidinginformation B.advertisinginformspeopleofnewideasratherthanwinsthemover C.thereisnothingwrongwithadvertisinginpersuadingthebuyer D.thebuyerisnotinterestedingettinginformationfromanadvertisement
I'velearnedseveralforeignlanguagesasanadultandwasabletolearnFrenchtofluentconversationin17days. In2005IstayedwithaFrenchfriendinaFrenchvillage.NooneinthevillagespokeEnglishandmyfriendrefusedtospeakEnglishaswell. IsetuparoutinewhereIdidthesamethingseveryday. InthemorningIpracticedwritingvocabularyfor2hours.Ibelievewritingthingsoutisthebestwaytomemorizethings. WhilewritingIwouldlistentoFrenchlearningMP3s.It'sreallyhelpfultohearotherstudentsmakemistakesthatyoucanlearnfromjustlikearegularclassroomenvironment. IhadlunchwithmyFrenchfriendseveryday.AstheyrefusedtoslowdownwhenspeakingtomeinFrenchitwastolearnortostarve! IntheafternoonIreadCharlieandtheChocolateFactoryinFrench.Readingthechildren'sbooksyoureadasachildisagreatwaytolearnnewlanguages.Firstlythelanguageusedissimpleandsecondlyknowingthestoryhelpsyoutoguessthemeaningofnewwordsandavoidusingadictionary. IspentanhourwritingbasicessaysaboutthingsthatalwaysgetaskedlikeWhereareyoufrom?Whatdoyoudo?whichIhadmyFrenchfriendcheckforerrors.Bylearningready﹣madeanswersyoupracticewhatyoulearnedandbuildupyourconfidence. Anothergoodtipistolearnthefillerwordswhichpeoplesaybetweensentencesbuthavenorealmeaningallowingyoutobuytimeinconversation. After17daysIwenttoPariswhereImetagirlinacoffeeshop.WhenItoldherIhadbeenlearningFrenchfor17dayssheinsistedthatIhadlivedinFranceforatleastayear. 1Thewritermaycomefrom. A.France B.Germany C.China D.theUSA 2WhichofthefollowingisNOTwhatthewriterdoesinlearningFrench? A.ShewrotenewFrenchwordsonebyoneagainandagaineverymorning. B.ShewouldlistentoaFrenchteachingclassbyMP3whileshewaswriting. C.Shehadsupperwithherfriendseverydaypracticetalkingwiththem. D.Shewroteanswerstosomeusualquestionstobuildupherconfidence. 3Whatisthepurposeofthewritertowritethisessay? A.Totellpeoplethatshewasaverygoodlanguagelearner. B.Tosharewithpeoplesomemethodsoflearningalanguage. C.Tokeeparecordofherexperienceoflearningalanguage. D.Totellpeoplethatitwasnoteasytolearnanewlanguage.
某同学为探究镁锌铜银的活动性顺序设计如下图所示试验依据实验流程设计下面对物质①②的选择合理的是
Itwasourschool'syearlydancingshow.I1beexcitedthatIwaschosenbytheteacherthistimealthoughIdidn'thaveanyexperienceofdancingforashow.Iwoulddanceinfrontofallthestudentsand2teacher.Itmademeveryproud. HoweverIwasabitsad3myfatherhadnotimetowatchmedance.He4invitetohaveabusinessmeeting.Iknewthatmyfatherwouldsurelycometomyshowifhecould.5luckymymotherandmyeldersisterwerestillcomingtowatchmyshow. 6thebeginningofthedayIwasverynervous.AfterchangingintothedressandgettingmymakeupdoneIfelt7relax.ThenIwentontothestagebravely.Iwasverygladtoseemymotherandsistersittingin8secondrow. JustbeforethelightsturneddarkIsawmyfatherrushintothehallandtaketheseatbesidemymother.9apleasantsurpriseitwas!Thesightofmyfathermade10Ismile.Ibegandancingconfidently.Soonaftertheshowmyfamilycamebackstagetocongratulateme.Iwassohappyandluckytohavemyfamily'ssupport.
生活中困难不可避免面对各种困难需要信心.假如你是李华尝试举例说明信心在学习考试生活等方面的作用并就面对困难的态度谈谈你的看法. 注意:1可适当增加细节以使行文连贯; 2词数100左右. .
某碳酸钠样品含有少量的氯化钠取12g该样品加入60g水中使其完全溶解再加入63.4g稀盐酸恰好完全反应共产生气体4.4g． 1样品中碳酸钠的质量分数计算结果精确到0.1% 2反应后所得溶液中溶质的质量分数是多少
Jealousofthekidsatschoolwhoaresmarterthanyouandseemtolearnmorequickly?Don'tworry.1 2HoweveraccordingtoarecentstudyIQcanrise﹣﹣notjustbyoneortwopointsbutbyasmanyas21points! ScientistshavefoundthatIQchangesarelinkedtochangesinpartofthebraincalledgraymatterwhichwasseentogrowandbecomedenserinthebrainsofpeoplewhoseIQsimprovedgreatly.3Oneistotrainyourshort﹣termmemory.Previousresearchhasproventhatshort﹣termmemoryisthebasisforintelligencesotryingtorecognizeorretellsomethingthatyouhaveseenorheardcanhelpraiseyouroverallbrainpower.4 Agoodnight'ssleepwillalsohelpimproveyourconcentration.5Ithelpsyoustayfocusedforlongerthenextday. Scientistshavealsofoundthatexercisehelps.Walking30minutesadayfivetimesaweekanddoingexercisewillhelpyoubecomemoreknowledgeableaswellashealthierandfitter. A.Thereareseveralwaysofincreasingyourbrain'sgraymatter. B.Yourbraindealsmoreefficientlywiththingsyoutrulylike. C.Withabitofbraintrainingthechancesarethatyoucanbeassmartastheyare. D.Somaybeit'sagoodideatogetyourbrainintrainingrightaway. E.Gettingenoughsleepislikepushingtheresetbuttoninyourbrain. F.Themoreyouworkonitthebetteryouwillbecome. G.Peopleusedtoassumethataperson'sIQwasunchangeable.
ThebiggestturningpointinmylifesofarwasthedayIlefthometogotocollege.BytheageofeighteenIhadneverbeenawayfrommyparentsformorethantwoweeks.1 WhenthedaytopackmythingscameIbegantowonderifIhadmadetherightdecision.ItriedtopersuademyselfwiththethoughtthatIwasmovingontoabetterlifebuttherewasstilladoubtinthebackofmymind.DeepinmythoughtswasthatIwasleavingallmyfriendsbehind.2 3IwassadlonelyandmoreterrifiedthanIhadeverbeeninmylife.HoweveronceIhadbeenshowntomyroomandhadmetsomeoftheotherstudentsIbegantofeelalotmorepositive.WithinafewdaysIwasmorecomfortableinmynewsurroundingsandallmydoubtsandfearsdisappeared.ThereweresomanynewthingstoexperienceandpeopletomeetthatIdidnothavetimetobeupset. Oneofthemainreasonswhythiswassuchanimportantchangeformewasthatmylifewastakingacompletelynewdirection.4HoweverIsoonrealizedthatIcouldmanagethemwell. 5Perhapsoneofthelessonsweshouldlearnishowtoturnthosethatarenewtoustoourbestadvantage. A.Peoplehavetomoveonandtherearealwayschangesinourlives. B.AnditwaswithsadnessthatImademywaytothetrainstation. C.SoIviewedmynewindependencewithamixtureofworryandexcitement. D.BythetimeIarrivedatmydestinationIbelievedIhadmadeaterriblemistake. E.IfeltincontrolforthefirsttimeandIwasdoingwhatIwanted. F.Thereweresomeproblemsoflookingaftermyselfsuchaswashingclothesbuyingfoodetc. G.I'dbeenonholidaywithsomefriendssoIcannotsayI'dhadthechancetogettooworriedaboutthemove.
下列对有关实验操作或现象的描述中错误的是
Whenadoglosesalegtheanimaleventuallyfiguresoutthebestwaytogetaroundonthreelegs.Inashorttimethedoglearnstodealwithitsphysicaldisability.Nowscientistshavedevelopedrobotsthatbehaveinmuchthesameway. Wecanfindrobotseverywhere.Robotsbuildcarsplaychessandcancleanyourhouse.Theymaysomedaydriveyourcartoo.TworobotsnamedSpiritandOpportunityweresenttoMarsonamissiontoexploretheredplanet.JeffCluneisacomputerscientistfromtheUniversityofWyoming.Hesaysrobotsalsohelppeopleinnaturaldisasters.Robotsareusedinsearchandrescueoperationsfollowinganearthquake.Theymaysomedayalsobeusedtoexaminethewreckage残骸ofanuclearaccidentliketheoneinFukushimaJapan.Mr.Clunesaysrobotscanbesenttoalotofplacessaidtobeunsafe.Theproblemisthatallofthosetypesofsituationsandenvironmentareextremelyunpredictable.Anditisverylikelythatrobotsandhumansinthosesituationsbecomedamaged.Heandotherscientistsaredevelopingtechnologysothatrobotswillcontinueoperatingafterthefirstsignofinjury.Theywantthemachinestohavetheabilitytomakechangesandcontinueperforminguntiltheycanberepaired. Mr.CluneandresearchersinFrancehaveaddedonemoreoperationtotheskillsetofrobotsworkingunderdifficultconditions.Theysaytheyprogrammedarobotonewithsixlegsandaroboticarmtolearnhowtodealwithinjury.TheirfindingswerereportedinthejournalNature.Mr.Clunesaidthatoncetherobotsbecomedamagedtheyusetheirintuition直觉andknowledgeofhowtheirbodyworkstofindawaytodealwiththedamage.Hesaystherobotsarealsoprogrammedwithchild﹣likecuriosity.Inotherwordstheyarealwaysaskingquestionsandlookingforanswers.Thewholeprocesstakesaboutaminutefortherobotstofindawaytoovercomedamage. 1Atthebeginningofthepassagethewritermentionsdogsto. A.introducethetopicinamoreattractiveway B.provideexamplesofhowanimalsdealwithunexpectedinjury C.provehowscientistsgetinspirationfromdogstodeveloptechnology D.showtherelationshipbetweendogsandrobots 2AccordingtothepassagenowadaysrobotsCANNOT. A.helppeopleinsearchandrescueoperationsfollowinganearthquake B.besentonamissiontoexploreontheMars C.examinethewreckageofanuclearaccident D.buildcarsorcleanthehouse 3WhyareMr.Cluneandotherscientistsdevotedtodevelopingthetechnology? A.Theyexpecttoenablerobotstocontinueworkingdespiteinjuryunderdifficultconditions. B.Theywanttosucceedinprogrammingrobotwithchildlikecuriosity. C.TheyaredeterminedtodesignamorepowerfulrobotforMarsexploration. D.Theyintendtomakerobotswhichcanbesenttoalotofplacessaidtobeunsafe. 4Nowscientistshavedevelopedrobotsthatoncedamagedcan. A.continueperforminginspiteofthedamage B.relyontheirfunctionstofigureoutawaytohandlethedamage C.spendaboutanhourfindingawaytoovercomedamage D.maintaintheirchildlikecuriosityandkeepaskingpeoplearoundforsolutions
Iloveagoodmurdermystery.Itisso1towatchorreadanexcitingandinterestingdetectivestoryandtrytosolvethe2yourself.AgathaChristieisundoubtedlyqueenofthedetectivestoryconsideringshe3overeightybooks.Manypeoplehavefalleninlovewithher4﹣﹣﹣﹣﹣HerculePoirotafamousBelgiandetectiveandMissMarpleanoldladywhoisalsoanamateur5. AsIamabig6ofAgathaChristieIwasexcitedto7herhouseinDevoncalledGreenway.Itravelledtoher8bysteamtrain.Wewentthroughadarktunnelandtherewaslotsofsmoke.Itwasa9settingforamurderlikeinherfamousnovelMurderontheOrientExpress.10allthepassengersarrivedsafely! AfterapleasantwalkthroughthewoodsI11thesplendidhouse.IdidatourandIlovedseeingwhereshewroteher12.Manyfirsteditionswereondisplayinarevolving旋转的bookcase.Howevermy13partoftheestate房产wastheboathouse.Therewasalovelyviewoftheriver14theboathousealsoservedamorespecialpurpose﹣﹣﹣inspirationforacrime15.InthePoirotnovelDeadMan'sFollyagirl'sbodyis16intheboathouse.Theyeven17theTVadaptationofthebookatGreenway. Ireally18myvisittoGreenway.Itwassucha19placeandIwasinterestedinseeingwhereAgathaChristiewas20towritesomanyexcitingstories. 1A.upset B.serious C.successful D.fun 2A.doubt B.problem C.murder D.method 3A.read B.wrote C.saw D.contributed 4A.creations B.inventions C.discussions D.reasons 5A.guard B.detective C.creator D.spy 6A.guide B.fellow C.fan D.gift 7A.watch B.rebuild C.explode D.visit 8A.house B.family C.hometown D.site 9A.perfect B.central C.colorful D.direct 10A.Sadly B.Fortunately C.Hopefully D.Surprisingly 11A.fetched B.got C.reached D.mentioned 12A.posts B.poems C.letters D.books 13A.personal B.useful C.rewarding D.favourite 14A.or B.and C.but D.for 15A.scenery B.sight C.view D.scene 16A.dissolved B.tended C.found D.buried 17A.developed B.filmed C.adapted D.affected 18A.enjoyed B.treasured C.exploited D.focused 19A.shocking B.beautiful C.skilful D.helpful 20A.inspired B.disappointed C.marked D.honored
1以下是四种常用的危险品标志油罐车上应贴的标志是填序号 2油罐车起火燃烧有三个必要条件其中汽油为可燃物还需要有氧气和． 3调查表明火灾伤人事故很多是由于缺乏自救常识造成的．当油罐车起火燃烧爆炸时下列自救措施不当的是填序号． A．迅速脱下衣物扑灭大火B．背对爆炸地点迅速卧倒C．用湿毛巾捂住口鼻选择合适通道迅速逃生．
假定你是李华你校英文报心理与健康栏目拟刊登一篇文章为高三备考的学生如何安排课余生活和释放心理压力提出建议.请你为此栏目写一篇英语短文要点如下: 1.高三学习的挑战和困难 2.如何安排课余生活 3.如何释放心理压力 注意:1.词数100左右; 2.可以适当增加细节以使行文连贯; 3.开头语已为你写好. LifeinSeniorThreeisnoteasy.
水是生命之源．下列有关水的说法正确的是
InthesmalltownsoftheUnitedStatesinthe1nineteencenturythegeneralstorewas2everyoneboughtthethingshecouldn'tmake3growathome.Whatthestoressold4tellagreatdealabout5lifeatthattime.Peopleboughttoolsthattheyneededforfarmwork;saltsugarand6foodsthatthefarmdidn'tproduce;articlesofclothingthattheycouldn'tmake7;shirtsforthemen;orclothesforthechildren.Lifewassimplethen.Onefeelsthatpeoplewere8thankforwhattheyhadandthattheylookedforwardwithcourageto9thefuturebrought.Itwouldbeinterestingtoknowhowtheywouldfeelaboutthelifetoday.Woulditseemtothemthatlifeistoocomplex?Wouldtheyenjoy10livealifeaswedonow?
MoviefansknowthattheiractionheroSupermandoesnotreallyfly.AndinthemovieSupermanReturnsanothervisualtrickisplayedonviewers.Themantheyseeflyingisnotreal.Heiswhatiscalledavirtualactor.Thefirststepincreatingthisdigitalactoristohavearealpersonstandinaroomcalledalightstage.Acomputerthencapturestheoutlinesandshapesofhisfaceandrecordshowtheythrowofflight.PaulDebeveciswiththeInstituteforCreativeTechnologiesattheUniversityofSouthernCalifornia. Wecanlightthemwithveryspeciallycomputer﹣controlledillumination照明andtakephotosofthemfromsevendifferentviewpointswithhighqualitydigitalstillcameras. Mr.Debevecispartofateamworkingtocreatecomputerizedimagesofpeopleobjectsandenvironmentsthatlookandactreal.ThelightstagepermitsactorstobeturnedintodigitalversionsofthemselvesmuchlikethebluecreaturesinthemovieAvatar.Therealworldcouldsoonbeusingasimilartechnology.ComputerexpertsattheInstitutearedevelopinga3﹣Dvideoteleconferencingsystem.Itwouldsendavideoimageofapersonintoameetingroom.Thatimagewouldbeabletoworkwiththepeopleintheroomwhowouldseeitin3﹣Dwithoutspecialeyeglasses.PaulDebevecsays: Thepersonwhoisbeingtransmittedtoaremotelocationcanactuallylookaroundatthepeopleintheroomandeverybodyinthatroomknowswhothey'relookingat.Andthat'ssuchafundamentalpartofhumancommunication. Hebelievesthebusinessworldwillbegintouse3﹣Dvideoteleconferencinginthenextfiveyears.It'salsoamediumwithwhichyoungpeopletodayareparticularlycomfortablehesaid.Ademonstrationofaninteractionbetweenanearthquakesurvivorandstudentsmaybepossibleinayear.In10yearswemaybeabletoplay3﹣Dvideogameswithoutspecialglasses. 1WhydoestheauthormentionthemoviesSupermanReturnsandAvatarinthepassage? A.Tocomparetheirdifferentstyles. B.Toexplain3﹣Dfilm﹣makingtechnology. C.Toattractmorereaderstowatch3﹣Dfilm. D.Todescribetheoriginof3﹣Dfilmindustry. 2Whichofthefollowingshowshowavirtualactorismade? a.arealactorstepsinsidealightstage. b.anactoriscreatedintodigitalversion. c.photosaretakenfromdifferentaspects. d.howtheactor'sfacereflectsthelightisrecorded. e.acomputermakessurehowtheactor'sfaceisfilmed. A.a→e→d→c→b B.a→c→e→d→b C.a→e→c→f→b D.e→d→c→a→b 3Whatistheauthor'sattitudetowards3Dtechnology? A.Cautious B.Positive C.Skeptical D.Critical 4What'sthemainideaofthetext? A.3﹣Dgoesfrommoviestorealworld. B.3﹣Dfilmbecomespopularworldwide. C.3﹣Dteleconferencingsystemcomesintobeing. D.3﹣Dgameswithoutspecialglassesbecomestrue.
Soyouwanttodrawmoneyfromabank?Doityourself.WanttofixtheInternetconnection?Doityourself.Needaboardingcardforyourflight?Doityourself.Intheorycompaniescansavemoneybyreplacinghumanworkerswithautomatedself﹣servicesystemswhilecustomersgainmorechoicesandgetquickerservice.Surelytheexpansionofself﹣serviceintomoreandmoreareasistobewelcomed? Notnecessarily.Whenitisdonewellself﹣servicecandogoodtobothcompaniesandcustomers.Butwhendonebadly﹣whohasnotfoundthemselvestrappedinaseriesofendlesstouch﹣tonemenus?Inareaswhereself﹣serviceisonlyjuststartedthisislessofaproblem:angrycustomerscanafterallalwaystaketheirbusinesselsewhere.Butifeverybankweretopreferself﹣servicesystemscustomerswouldnolongerbeabletoexpresstheirdiscountbyvotingwiththeirfeet.Asaresultsomebanksforexamplealreadypromisethattheirtelephone﹣bankingservicesalwaysofferthechoiceoftalkingtoahumanoperator.Butinreturnforhumanservicemanycompanieswillsimplychargemore. Anotherdisagreementtoself﹣serviceisthatwhileitsavescompaniesmoneyitdoesnotalwayssavetheircustomers'time.Inthebestcasesitdoesofcourse:checkingyourselfinattheairportcanbequickerthanqueuingormakingaphonecall.Butasmoreandmoretasksareontocustomerstheymaystarttohopeforthedaysofold﹣fashionedservice. Allofthissuggeststhattherearelimitstohowfarself﹣servicecanbetaken.Companiesthatgotoofardowntheself﹣servicerouteortodoitincorrectlyarelikelytofindthemselvesbeingpunished.Insteadabalancebetweenself﹣serviceandtraditionalformsofserviceisnecessary. 1Whatadvantagesdoestheself﹣servicetechnologycertainlybring? A.Cuttingthecostforthecompanies. B.Savingmoneyforcustomers. C.Offeringcustomersextramoney. D.Defeatingthetraditionalformsofservice. 2Whatdoesthewritermeanbysayingcustomerswouldnolongerbeabletoexpresstheirdiscountbyvotingwiththeirfeet? A.Customerswouldbesoangrythattheykickanddamagethemachineprovidingself﹣service. B.Customerswouldnotbeabletoexpresstheirangeratthebank'sservicebyleavingthere. C.Customerswouldtrytheirbesttopersuadethebanktostopself﹣service. D.Customerswouldelectsomeleaderstohaveatalkwiththebank. 3Fromthispassagewecanseethatthewritertheuseofself﹣service. A.dislikes B.supports C.thinkshighlyof D.makescarefuljudgmenton
ScientistsinArgentinahavecreatedtheworld'sfirstcowwithtwohumangenesthatwillenableittoproducehuman﹣likemilk. Geneticengineeringwasusedtointroducethemothers'milkgenesintotheanimalbeforebirthaccordingtotheNationalInstituteofAgribusinessTechnologyinBuenosAires. Asanadulttheclonedcowwillproducemilkthatissimilartohumansinwhatwillproveadevelopmentofgreatimportanceforthenutritionofinfantssaidtheinstitute.TheclonedcownamedRositaISAisthefirstintheworldthatincorporatestwohumangenesthatcontaintheproteinspresentinhumanmilksaidthestatement. TheArgentineteamsaidtheChineseonlyintroducedonehumangenewhiletheirresearchinvolvedtwomeaningthemilkwillmorecloselyresemblethatofhumans. Ourgoalwastoraisethenutritionvalueofcows'milkbyaddingtwohumangeneswhichdogoodtotheimmunesystemoftheinfants.saidAdrianMuttofromtheNationalUniversityofSanMartinwhichworkedwiththeinstitute. CristinaKirchnerPresidentofArgentinasaidthatthescientificinstitutemakesallArgentinesproud.Shealsorejectedthatshehadrejectedthehonourofhavingthecownamedafterher.TheycametotellmethatthenameisCristinabutwhatwomanwouldliketohaveacownamedafterher?ItappearedtometobemorepropertocallitRosita. 1WhydidthescientistsinArgentinaintroducetwohumangenesintotheclonedcow? A.BecausetheChineseengineersonlyintroducedonegeneintheirresearch. B.BecauseCristinaKirchnerPresidentofArgentinaexpectedthemtoincorporatetwogenes. C.Becausetwohumangenesenabledthecowtoproducemorenutritiousmilkfortheinfants. D.BecauseMuttofromtheNationalUniversityofSanMartinthoughttheycouldbethefirst toincorporatetwogenesinthecow. 2WhatcanbeinferredfromCristinaKirchner'sstatements? A.Shewasquitesatisfiedwiththeresearchdonebytheinstitute. B.Sheconsidereditanhonortonamethespecialcow. C.Shefeltitimpropertobenamedafterthecow. D.Sherefusedtogiveanametothecowoutofself﹣respect. 3WhichofthefollowingcanbestreplacetheunderlinedexpressioninParagraph4? A.havemorevarietiesthan B.bemoresimilarto C.havemorenutritionthan D.bemoredifferentfrom 4What'sthepassagemainlyabout? A.Theimportanceofgeneticengineering. B.Waystoimprovemother'smilk. C.Aclonedcowtoproducehuman﹣likemilk. D.AdvancedagriculturaltechnologyinArgentina.
下列实验操作中错误的是
TimeTravel Ifyoucouldtravelintimewherewouldyougo?PerhapsyouwouldwatchanoriginalperformanceofaShakespeare'splayinElizabethanEngland?WhatabouthangingoutwithLaoziintheSpringandAutumnPeriod?Ormaybeyou'dvoyagefaraheadofthepresentdaytoseewhatthefutureholds. Thepossibilityoftimetravelisindeedappealing.Storiesexploringthesubjecthavebeenaroundforhundredsofyears.PerhapsthebestknownexampleissciencefictionnovelTheTimeMachinewhichwaswrittenbyH.G.Wellsandpublishedin1895forthefirsttime.Itwasadaptedintoatleasttwofeaturefilmsofthesamenameaswellastwotelevisionversionsandalargenumberofcomicbookadaptations.Itisgenerallycreditedwiththepopularizationoftheconceptoftimetravelusingavehiclethatallowsanoperatortotravelpurposefullyandselectively.ThetermtimemachinecoinedbyWellsisnowuniversallyusedtorefertoavehicletransportingpeopleintothefarfuture. Butcouldtimetravelactuallybepossible?Somescientistssayyesintheory.Theyproposeusingcracksintimeandspacecalledwormholeswhichcouldbeusedasshortcutstootherperiods.Einstein'stheoryofrelativityallowstimetravelinextremecircumstances.AndBritishphysicistStephenHawkingsaysyoucouldtravelintothefuturewithareallyfastspaceship﹣goingatnearlythespeedoflight.Thoughbuildingsuchaspaceshipwouldofcoursebenosimpletask. Evenifyoucouldtravelintothepastthereissomethingcalledthegrandfatherparadox.Itaskswhatwouldhappenifatimetravelerweretogobackintimeandhavehisowngrandfatherkilledforsomereasonandthereforepreventhimselffrombeingborn.Ifthetimetravelerwasn'tbornhowwouldhetravelbackintime? Andwouldyoureallyliketovisitthefuture?InH.G.Wells'bookthemaincharactertravelsintodistanttimewherehearrivesatabeachandisattackedbygiantcrabs.Hethenvoyages30millionyearsintothefuturewheretheonlylivingthingisablackobjectwithtentacles触角.Ifthat'swhat'sinstoremaybewearebetterjustlivinginthepresentdayafterall. 1ThenovelTheTimeMachinementionedinParagraph2aimstoshow. A.thespecialfeatureofthebook B.People'sinterestintimetravel C.thelonghistoryoftimetravel D.thecontributionofH.G.Wells 2Einstein'sandHawking'stheories. A.suggestthepossibilitytoinventthetimemachine B.havesimilaritiesinmanyways C.haveprovedwrongbysometimetravelers D.pushtheinventionofthefirstspaceship 3InParagraph4grandfatherparadoxprobablyreferstotheideathat. A.thetravelerispreventedfrommeetinghisgrandfather B.thetravelergoesbackintimetoseekforhisgrandfather C.thegrandfather'sdeathmakesthetraveler'sbirthimpossible D.Thereunionofthetravelerandhisgrandfatherbringshappiness 4Accordingtothepassagewhatisprobablytheauthor'sattitudetowardstimetravel? A.Supportive. B.Unconcerned. C.Unclear. D.Skeptical.
我们学化学用化学爱化学让化学知识服务于人类．下列叙述正确的是
I'vereadlotsofstoriesaboutfamilymemories.Inthose1.I'vefoundvoiceofsadnessandlonging.It'struethatsomuchinourdailylivesmakesus2allthetime.Wefindourselveswithlessandtimetospendwithour3andfriends.I'vehadthesame4myself. Iusedtohave5timeswithmygrandfatherwhenwelivedtogether.WhenIwasveryyoungIoftenenjoyedspendingtimeinhis6watchingtheflowersandwateringthefruittrees.ButasIgrewupI7becameselfish. OncewhenIwas6wewentshoppingtogether.Aswetookthewrongbusandendedupgetting8unabletofindourwayback.Icouldn'tstay9andshoutedrudelyinhisface.Iwassostubborn固执的thatIwouldn'tstaysorry10returninghomethinkingIhaddonenothingwrong. NowI11howridiculous可笑的Iwasatthetime!AndIalsorealizehow12itwaswhenIfinallyadmittedIwas13!WhenItrulywantedtoexpressmy14mygrandfatherhadleftus15leavingmewithnomorechanceto16mymistake.Icouldn't17saytohimthethreewords﹣﹣﹣﹣Iamsorry. Wearespendingmoreandmoretimeoutsidewithlessandlesstimeto18withourfamiliesathome.So19themostofeverysecondyouhavewithyourlovedonesbecausetime20goingwaitingfornoone. 1A.books B.stories C.reports D.films 2A.crazy B.easy C.busy D.angry 3A.families B.classmates C.colleagues D.employers 4A.adventure B.research C.exploration D.experience 5A.good B.hard C.sad D.urgent 6A.kitchen B.garage C.house D.garden 7A.frequently B.rarely C.gradually D.finally 8A.bored B.lost C.hurt D.upset 9A.calm B.awake C.firm D.happy 10A.while B.unless C.until D.after 11A.learn B.imagine C.realize D.agree 12A.early B.late C.nice D.guilty 13A.serious B.nervous C.wrong D.painful 14A.concern B.worry C.opinion D.regret 15A.forever B.somehow C.alone D.instead 16A.careabout B.apologizefor C.thinkof D.referto 17A.again B.often C.even D.still 18A.spare B.save C.take D.kill 19A.follow B.receive C.divide D.make 20A.needs B.keeps C.misses D.stops
Alexis17satquietlyinthepassengerseatofherdad'scar.Shelethereyeslazilyscanthelandscapeforwildlife.Thenadeercameintoviewabout200yardsinfrontofthem.Dadthere'sadeerthere!Alexissaid.Itwasamaledeerwithsharpantlers角oneachsideofitshead. AsthecarmovedcloserAlexissawthatthedeer'sheadwasbenttowardtheground.Thensheheardascreamandsawanarmflyupnearthedeer'shead.Alexisrealizedthedeerwasattackingawoman.Suea44﹣year﹣oldmotherhadbeenoutforhermorningrun.Thedeerfollowedherandedgedcloser.IknewIwasintroubleSuesays.Shewenttopickupastickforself﹣defenseandthedeercharged.Itliftedherwithitsantlersandthrewherintotheair.Suecouldfeelbloodflewdownherleg.Withinsecondsthedeerhadpushedherofftheroad. WhenAlexisandherfatherpulledupthedeerwasthrowingSuelikeadoll.Alexislookedintothewoman'sterrifiedeyesandbeforeherfatherhadevenstoppedthecartheteenagerjumpedquicklyoutofthecarandrantowardthedeer.Iwaskickingittogetitsattentionshesays.Thenherfatherwhohadfollowedhisdaughterpushedthedeerawayfromthewomen. AlexishelpedSueintothecarandthenappliedapieceofclothtoSue'sinjuredleg.We'regoingtogetyoutoahospitalAlexissaid.Thensheheardherfathershoutloudly.Hehadbeenknockedtotheground.Alexistookholdofahammerfromthecarandrantowhereherfatherlayonhisback.Shebeatthedeer'sheadandneckbuttheblowsdidn'tscareitaway.Iwaslosingfaithshesays.AcouplemorestrikesAlexissaidherfather.Youcandoit.TurningthehammeraroundAlexisclosedhereyesandbeatthedeer'sneckwithallherstrength.Whensheopenedhereyesthedeerwasrunningaway.Alexisgotinthedriver'sseatandspedtowardthenearesthospital. AfterSuewastreatedshetearfullythankedherrescuers.Youexpectateenagegirltogetonthephoneandcallforhelpshesaysnottobeatupadeer. 1WhatwasSuedoingwhenshewasattackedbythedeer? A.Shewasdrivinghome. B.Shewasrestingontheroad. C.Shewastakingexercise. D.Shewasfeedingwildanimals. 2WhatdidAlexisdotosaveSue? A.Shepushedthedeeraway. B.Shehitthedeerwithherfeet C.Shedrovethecartohitthedeer. D.Shebeatthedeerwithahammer. 3WhichofthefollowingwordscanbestdescribeAlexis? A.Strong. B.Cruel. C.Energetic. D.Brave. 4Whatisthebesttitleforthepassage? A.AWomanWasSeriouslyInjured B.ADangerousDeerAttackedaWoman C.AGirlRescuedHerFatherSuccessfully D.ATeenagerSavedOthersfromaDeerAttack
在购买和使用化肥时要了解化肥的性质以便合理使用．为了给农民做技术指导大海同学利用自己掌握的知识对碳酸钾硫酸铵两种化肥的相关性质做了一下探究请将下列实验报告填写完整． 【实验记录与分析】 【结论与应用】碳酸钾和硫酸铵不能混合使用原因是碳酸钾溶液呈碱性与硫酸铵混合施用产生NH3降低肥效． 【知识拓展】鉴别失去标签的碳酸钾和硫酸铵固体请你用两种不同类别的试剂一次性鉴别它们．请写出所用的试剂．
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≤k≤2 ＜k＜2
A.(1，3)B.(2，-1)C.(2，1) (3，1)
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