专题限时检测(十九)阅读理解主旨大意类之标题归纳题(加★的为标题归纳题，本卷限时23分钟)A(2017·江苏省重点中学高三联考)InthewesternPacificOceanliesthedeepestplaceontheplanet—theMarianaTrench,whichrunsasdeepasabout7milesbelowtheocean'ssurface.That'sgreaterthantheheightofMountEverestmeasuringabout5andahalfmilesabovesealevel.TheMarianaTrenchishometoavarietyofsealife.Coralreefsandunderwatervolcanoesareallfoundthere.Butbecausefewhumanshavebeenabletogofarintothetrench,scientistsknowlittleaboutit.Nowtheyareworkingtochangethat.Recently,theOkeanosExplorerhasbeenonanexplorationthere.Remotelyoperatedvehiclessentoutfromitaretakingvideosoflifeinitsdeepest,darkestareas.Scientistsaroundtheworld,alongwiththegeneralpublic,canwatchthevideosinrealtime.Thesevideosareshowingthemostmysteriouspartsoftheocean.MuchoftheareathattheOkeanosExplorerisexploringhasbeenprotectedsince2009aspartoftheMarianasTrenchMarineNationalMonument.Coveringmorethan95,000squaremiles,itisoneoftheworld'slargestmarineprotectedareas.It'sverydark,sotheanimalsmustusemanyothersensesotherthansighttounderstandtheirsurroundings,findfoodandescapefromenemies.Thewaterisalsoverycold—slightlyabovefreezing—anditspressureisextremelyhigh.Thatmeansonlycertainanimalscanlivethere,likeshrimp,crabs,andstarfish.Sofar,theexpedition'scamerashavefilmedavarietyofrarelyseendeep-seacreatures,includingghostsharks,hugelobsters,andseapigs.Perhapsthemostamazingsightisbeautifulredjellyfishthatscientistshaveneverseenbefore.ScientistshopethisexpeditionwillhelpthemunlockthemysteriesoftheMarianaTrench.They'lllearnaboutthedeepseaanimalsandplantsfoundthere.They'llalsostudyitsuniquefeatures,includingunderwatermountains,mudvolcanoes,andhotspringsproducedbythevolcanoes.Theysaythatthisknowledgewillalsohelpscientistsbetterunderstandhowthedeepestpartoftheoceanaffectstherestoftheworld.“Theoceanplaysaroleintheairwebreathe,thefoodweeat,andthetransportationofthegoodswebuy—nottomentiontheweatherandclimatechange，”ascientistsaid.“Thedeepseamayalsoholdcuresforsomediseases.Howwillweknowwhatisoutthereifwearen'tlookingintoit？”语篇解读：本文是一篇新闻报道。最近，科学家们对世界上最深的地方——马里亚纳海沟进行了一次探测。通过探测，他们对世界上最深的地方的生态有了初步的了解。1．WhatdoweknowabouttheMarianaTrenchfromthetext?A．Sealifecanhardlybefoundthere.B．Ithasneverbeenexploredbyhumans.C．It'stheworld'slargestmarineprotectedarea.D．It'slivelyevenasthedeepestplaceintheworld.解析：选D细节理解题。根据第一段的内容和第二段的“TheMarianaTrenchishometoavarietyofsealife.Coralreefsandunderwatervolcanoesareallfoundthere.”可知，尽管马里亚纳海沟是世界上最深的地方，但是海沟里依旧生机勃勃。故答案选D项。2．WhatdoestheauthorwanttosayinParagraph4?A．Livingconditionsaretoughthere.B．Thesurroundingsmakeanimalsmuchstronger.C．Animalsthereareslowinreactingtopotentialthreats.D．Animals'sightisseverelydamagedbyhighwaterpressure.解析：选A推理判断题。根据第四段的内容，尤其是“It'sverydark，so...Thewaterisalsoverycold—slightlyabovefreezing—anditspressureisextremelyhigh”“onlycertainanimalscanlivethere”等信息可知，马里亚纳海沟的生存条件是很恶劣的。故答案选A项。3．Whatisimpliedinthescientist'swordsinthelastparagraph?A．Hefeelsproudofwhattheyhavedoneforhumans.B．It'sworthwhiletotakeefforttoexploretheMarianaTrench.C．Scientistsshouldspendmoretimestudyingtheoceanicclimate.D．There'remanychallenge...
