2015年职称英语理工类直播1v1辅导1月31日级4749篇

2015 —阅读理解精讲（理工类 理工A级第47Listeningto 鸟鸣 vt.强调,突出,highlighttheimportancehighlighttheproblem反映问题pickoutsthasanimportantpart;throwattentiononto;payattentioncometo givethegreenlighttosb finchn.雀科鸣鸟chirpv.（鸟）鸣zebrafinch:斑胸草

perkv.使振作，使活跃 chirpaway叽喳而away有continuously和steadily的意思(chataway)perk 活跃起来，振作(cheerhigh-pitched声调高的，声 WhatdoesthefirstparagraphsayaboutzebraMalezebrafinchesliketosingtofemalezebraMalezebrafinchessinglouderthanfemalezebraMalezebrafincheschangetheirsongsinfemalezebraMalezebrafinchesliketolistentofemalezebrafinches Amalezebrafinchchirpsawaytohimself.Suddenlyhenoticesafemalebird,nearby:Herealizeshehasanaudienceandimmediaychangeshissong.Canthefemalelthedifferenceinhisperformance?Accordingtoanewstudy,thefemalezebrafinchknows.Andsheprefersthespecialtrillshecreateswhenhesingstoher.Amalezebrafinchchangeshissongwhensingingtoafemaleinwaysthatpeoplecanbarelydetect.Butthefemalefinchcanlthedifference. WhatdidtheresearchersfindintheirstudyoffemalezebraFemalefincheslikedsongsmalefinchessangforFemalefinchesonlylikedsongsmalefinchessangfortheirFemalefincheslikedtolistentosongsfrombothFemalefincheschosethebestmalesingersastheir 5.Femalebirdswereplacedbetweenthetwospeakers.Someofthebirdshadmates,othersdidn't.Thefemalesshiftedaroundabit,andthenmostofthemhoppedovertositbesidejustonespeaker.Allthebirdsthatmadeaclearchoicelikedsongsmeantforafemaleaudience,evenifthey'dnevermetthemale. ismeant by"concert inthe SongssungbyzebrafinchesataSongssungbymalefinchesforfemaleSongssungbyfemalefinchesformaleSongssungbymalefinchestomanyfemale Inthestudy,WoolleyandDoupesetupalongcagewithasoundspeakerateachend.Onebroadcastthesoundofamalezebrafinchsingingtohimself,likesomeonesingingintheshower.Theotherspeakerbroadcastamaleperformingforafemaleaudience,asifhewasgivingaconcert. Scientiststhenstudiedthebrainsofthefemales.Theyfoundcertainareasofthebrainperkedupwhenthebirdslistenedtotheconcertsongs.Thesebrainareasmaybeinvolvedinrecognizingandevaluatingthesongs,andstoringthememoriesofthem. WhatisNOTtrueofdirectedThesenderofamessagehasaspecificMalezebrafinchessingtofemaleMotherstalktotheirMalezebrafinchessingto Thisresearchdealswithwhat'scalleddirectedcommunication,whenthecommunicator,orsender,focusesthemessageforaspecificaudience.Oneexampleisthewaymomsspeaktotheirbabies.Mothersaroundtheworldusethesamesortofhigh-pitchedsing-songchatter,andthebabiesrespondbesttothosesounds.Songbirdsareoneoftheonlyotherspeciesknowntolearntheircommunication,inthiscasetheirsongs. ofthefollowingcanbestreflectthethemeofthe BirdsongsasZebrafinchesandtheirEnjoying Scientistshadnoticedslightvariationsinthesongsofmalezebrafinchesbasedonwhethertheyweresingingaloneorwhethertherewasafemaleandpotentialmate.nearby.Withanaudience,themalesspedupthepaceoftheirsongsandcontrolledthenotestheyused.vary-variety,variation-various/differentkinds ForthisStudy,researchersSarahC.WoolleyandAllisonDoupeattheUniversityofCalifornia,SanFranciscodecidedtofocusattentiononthelisteningfemales,whichhavenotbeenwellstudiedinthepast. Matedfemalesalsohadachancetolistentotwodifferentperformancesongs,onefromanunknownmale,andonefromtheirmate.Theyspentmoretimelistening,totheconcertversionoftheirmates'songs.Thissuggeststhatafterawhile,femaleslearntorecognize--andprefer—thesongsoftheirmates. 理工A级第49U.S.ScientistsConfirmWateron 科学家确认火星上有水 foilv.Scoopn.

conductivityn.传导性，导电性 v.融化溶解（melt) StereoImager立体图 n.地带,地域,地 WhatwasdiscoveredbyNASA'sPhoenixMarsLanderonFlowingWaterinasoilLiving NASAscientistssaidthatMarswascoveredoncebyvastlakes,flowingriversandavarietyofotherwetenvironmentsthathadthepotentialtosupportlife.(NASA:NationalAeronauticsandSpaceAdminstration（美 LaboratorytestsaboardNASA‘sPhoenixMarsLanderhaveidentifiedwaterinasoilsample.Thelander’sroboticarmdeliveredthesampleWednesdaytoaninstrumentthatidentifiesvaporsproducedbytheheatingofsamples.“Wehavewater,”saidWilliamBoyntonoftheUniversityofArizona,leadscientistfortheThermalandEvolved-Gasyzer,orTEGA.“ThisisthefirsttimeMartianwaterhasbeentouchedandtasted.” WhydidthefirsttwoattemptstodeliversamplesThesamplevaporizedFreshmaterialwasexposedtotheThesamplesgotstuckinsidetheTheroboticarmhitahard Thesoilsamplecamefromatrenchapproximay2inchesdeep.Whentheroboticarmfirstreachedthatdepth,ithitahardlayeroffrozensoil.Twoattempts(todeliversamplesoficysoilondays)(whenfreshmaterialwasexposed)werefoiledwhenthesamplesbecamestuckinsidethescoop.MostofthematerialinWednesday'ssamplehadbeenexposedtotheairfortwodays,lettingsomeofthewaterinthesamplevaporizeawayandmakingthesoileasiertohandle. WhichoneofthefollowingstatementsisNOTmeantbytheScientistshavebeentryingtobreaktheice-richlayersofsoilonScientistshavebeensurprisedbyhowthesoilonMarsbehaves.C.ScientistshavebeentryingtofindoutifthereislifesupportingmaterialonMars.D.Scientistshavebeentryingtoknowifwatericewill TheroboticarmisacriticalpartofthePhoenixMarsmission.ItisneededtotrenchintotheicylayersofnorthernpolarMarsanddeliversamplestoinstrumentsthatwillyzewhatMarsismadeof,whatitswaterislike,andwhetheritisorhaseverbeenapossiblehabitatforlife. "Marsisgivingussomesurprises,"saidPhoenixprincipalinvestigatorPeterSmithoftheUniversityofArizona."We'reexcitedbecausesurprisesarewherediscoveriescomefrom.Onesurpriseishowthesoilisbehaving.Theice-richlayerssticktothescoopwhenpoisedinthesunabovethedeck,differentfromwhatweexpected,fromalltheMarssimulationtestingwe'vedonesofar.“ SincelandingonMay25,Phoenixhasbeenstudyingsoilwithachemistrylab,TEGA,amicroscope,aconductivityprobeandcameras.Thescienceteamistryingtodeterminewhetherthewatericeeverthawsenoughtobeavailableforbiologyandifcarbon-containingchemicalsandotherrawmaterialsforlifearepresent. WherearethescientistsinvolvedintheresearchTheyarefromTheyarefromTheyarefrombothAmericaandTheyarefromneitherAmericanor NASAscientistssaidthatMarswascoveredoncebyvastlakes,flowingriversandavarietyofotherwetenvironmentsthathadthepotentialtosupportlife.(NASA:NationalAeronauticsandSpaceAdminstration（美 Themissionisexaminingtheskyaswellastheground.ACanadianinstrumentisusingalaserbeamtostudydustandclouds"It'sa30-wattlightbulbgivingusalasershowonMars,"saidVictoriaHipkinoftheCanadianSpaceAgency. WhichofthefollowingdoyouthinkisthebestdescriptionofPhoenix'sSurfaceS