- 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： According to the text, which of the following is NOT a use for a hydrophone?（） - A 、To listen to the sound of undersea fauna
- B 、To search for unknown species of fish and other creatures
- C 、To monitor the passing of surface vessels
- D 、To detect submerged submarines
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参考答案【正确答案：C】
第三段第三句提到，水听器（一种水下探测声音的仪器）可以用于探测潜艇，能听到鱼虾等发出的声音，第四段也提到水听器探测到石首鱼（croaker）发出的声音。因此，选择项A、B、D表达的内容都与文章内容相符。
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