MBA考试
报考指南考试报名准考证打印成绩查询考试题库

重置密码成功

请谨慎保管和记忆你的密码,以免泄露和丢失

注册成功

请谨慎保管和记忆你的密码,以免泄露和丢失

首页MBA考试题库正文
  • 阅读理解A
    题干:Intheirworldofdarkness,itwouldseemlikelythatsomeoftheanimalsmighthavebecomeblind,ashashappenedtosomecavefauna.So,indeed,manyofthemhave,compensatingforthelackofeyeswithmarvelouslydevelopedfeelersandlong,slenderfinsandprocesseswithwhichtheygropetheirway,likesomanyblindmenwithcanes,theirwholeknowledgeoffriends,enemies,orfoodcomingtothemthroughthesenseoftouch.Thelasttracesofplantlifeareleftbehindinthethinupperlayerofwater,fornoplantcanlivebelowabout600feeteveninveryclearwater,andfewfindenoughsunlightfortheirfood-manufacturingactivitiesbelow200feet.Sincenoanimalcanmakeitsownfood,thecreaturesofthedeeperwatersliveastrange,almostparasiticexistenceofutterdependenceontheupperlayers.Thesehungrycarnivorespreyfiercelyandrelentlesslyuponeachother,yetthewholecommunityisultimatelydependentupontheslowrainofdescendingfoodparticlesfromabove.Thecomponentsofthisnever-endingrainarethedeadanddyingplantsandanimalsfromthesurface,orfromoneoftheintermediatelayers.Foreachofthehorizontalzonesorcommunitiesoftheseathatliebetweenthesurfaceandtheseabottom,thefoodsupplyisdifferentandingeneralpoorerthanforthelayerabove.Pressure,darkness,andsilencearetheconditionsoflifeinthedeepsea.Butweknownowthattheconceptionoftheseaasasilentplaceiswhollyfalse.Wideexperiencewithhydrophonesandotherlisteningdevicesforthedetectionofsubmarineshasprovedthat,aroundtheshorelinesofmuchoftheworld,thereistheextraordinaryuproarproducedbyfishes,shrimps,porpoisesandprobablyotherformsnotyetidentified.Therehasbeenlittleinvestigationasyetofsoundinthedeep,offshoreareas,butwhenthecrewoftheAtlantisloweredahydrophoneintodeepwateroffBermuda,theyrecordedstrangemewingsounds,shrieks,andghostlymoans,thesourcesofwhichhavenotbeentraced.Butfishofshallowerzoneshavebeencapturedandconfinedinaquaria,wheretheirvoiceshavebeenrecordedforcomparisonwithsoundsheardatsea,andinmanycasessatisfactoryidentificationcanbemade.DuringtheSecondWorldWarthehydrophonenetworksetupbytheUnitedStatesNavytoprotecttheentrancetoChesapeakeBaywastemporarilymadeuselesswhen,inthespringof1942,thespeakersatthesurfacebegantogiveforth,everyevening,asounddescribedasbeinglike“apneumaticdrilltearinguppavement”.Theextraneousnoisesthatcameoverthehydrophonescompletelymaskedthesoundsofthepassageofships.Eventuallyitwasdiscoveredthatthesoundswerethevoicesoffishknownascroakers,whichinthespringmoveintoChesapeakeBayfromtheoffshorewinteringgrounds.Assoonasthenoisehadbeenidentifiedandanalyzed,itwaspossibletoscreenitoutwithanelectricfilter,sothatoncemoreonlythesoundsofshipscamethroughthespeakers.
    题目: Which of the following statements about the state of oceanographic research does the text most clearly support?()
  • A 、Undersea research is still incomplete
  • B 、Technology used in undersea studies is still in a very primitive stage of development
  • C 、More undersea research is conducted near shore than in mid ocean
  • D 、Military researchers have made several momentous discoveries about undersea life

扫码下载亿题库

精准题库快速提分

参考答案

【正确答案:C】

第三段第三句提到,用于探测潜艇的水听器和其他声音探测器的广泛使用证明:在世界各地的沿海水域,可以听到鱼、虾、海豚和其他尚未辨出的鱼类发出的丰富多样的声音。对于远离海岸的深水海域的声音的研究却还很少,可是,当“亚特兰第斯”号的船员将水听器放入百慕大深水海域时,他们记录下奇怪的喵喵叫声、尖叫声和鬼魂似的呻吟声,这些声音来自何处尚不清楚。可见,作者认为对深水鱼类的研究还很不够。D意为:军事研究者对深海生物有一些重大发现。然而,文章并没有提到那些探测潜艇的人对鱼类有何研究,只是提到他们在工作过程中听到了鱼类发出的声音。

您可能感兴趣的试题
热门试题换一换

亿题库—让考试变得更简单

已有600万用户下载