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阅读理解英文带解析 英语真题阅读理解试题及名师解析(29)

2017年09月01日 来源:阅读理解英文带解析 大字体小字体

  [D]peopleshouldadjustthefishingbaselinetothechangingsituation.

  大型海洋动物今天面临相同的威胁。

  从迈尔斯博士和沃尔姆博士的论文中我们可以推断出

考研英语阅读理解真题『考研英语阅读理解真题

  34.Dr.Myersandotherresearchersholdthat

  Dr.MyersandDr.Wormarguethattheirworkgivesacorrectbaseline,whichfuturemanagementeffortsmusttakeintoaccount.Theybelievethedatasupportanideacurrentamongmarinebiologists,thatofthe“shiftingbaseline”.Thenotionisthatpeoplehavefailedtodetectthemassivechangeswhichhavehappenedintheoceanbecausetheyhavebeenlookingbackonlyarelativelyshorttimeintothepast.Thatmattersbecausetheorysuggeststhatthemaximumsustainableyieldthatcanbecroppedfromafisherycomeswhenthebiomassofatargetspeciesisabout50%ofitsoriginallevels.Mostfisheriesarewellbelowthat,whichisabadwaytodobusiness.

  [C]themarinebiomasshassufferedagreaterloss.

  [C]largeseaanimalsmayfacethesamethreattoday.

考研英语阅读理解真题『考研英语阅读理解真题

  [C]thecatchsizesinnewfisheriesareonly20%oftheoriginalamount.

  【答案与解析】本文向我们介绍了有关彗星方面的知识。与地球一样,彗星也是绕太阳旋转的,它本身不发光,靠反射太阳的光而发亮。短文中还介绍了彗星的成因,它拖着的长尾巴是如何形成的以及著名的哈雷彗星名字的由来。

2017考研英语历年真题全解析:07年真题阅读理

2013年12月英语四级阅读理解真题试卷 大学英

  [B]smallspeciessurvivedaslargeanimalsdisappeared.

  [D]thenumberoflargerpredatorsdroppedfasterinnewfisheriesthanintheold.

  [B]biomasslevel.

  Thattheseasarebeingoverfishedhasbeenknownforyears.WhatresearcherssuchasRansomMyersandBorisWormhaveshownisjusthowfastthingsarechanging.Theyhavelookedathalfacenturyofdatafromfisheriesaroundtheworld.Theirmethodsdonotattempttoestimatetheactualbiomass(theamountoflivingbiologicalmatter)offishspeciesinparticularpartsoftheocean,butratherchangesinthatbiomassovertime.AccordingtotheirlatestpaperpublishedinNature,thebiomassoflargepredators(animalsthatkillandeatotheranimals)inanewfisheryisreducedonaverageby80%within15yearsofthestartofexploitation.Insomelong-fishedareas,ithashalvedagainsincethen.

  31.Theextinctionoflargeprehistoricanimalsisnotedtosuggestthat

  【分析】通过题干关键词“大型史前动物的灭绝”可以定位到第一段。作者提到它们的灭绝是由于人类的捕杀,作者在第一段最后一句提到,“如今类似的事情可能会发生在海洋中”。因此可以得出结论,即,作者是为了引用大型史前动物的灭绝来引出海洋物种同样面临着由于人类过度捕捞而灭绝的这个话题,故正确答案是[C]。[A]、[B]、[D]选项都没有能够表达出作者的这个意图,而只是很浅层去分析表象。

考研真题 英语六级阅读理解4大难点分析

  一些老渔场里大型捕食类鱼种的贮存量已经减少了90%。

  现在渔场的数量只有15年前数量的一半。

  【答案】C

  大型动物容易受到环境变化的影响。

  名师解析

  32.WecaninferfromDr.MyersandDr.Worm’spaperthat

  成长缓慢的鱼要比成长快速的鱼活得长。

  当大型动物消失的时候小型物种存活了下来。

  [A]managementefficiency.

  [A]peopleshouldlookforabaselinethatcanworkforalongertime.

  [C]catch-sizelimits.

  [D]technologicalapplication.

  [A]fishingtechnologyhasimprovedrapidly.

  【考点】推断题。

  [A]largeanimalswerevulnerabletothechangingenvironment.

  [A]thestockoflargepredatorsinsomeoldfisherieshasreducedby90%.

  [B]fisheriesshouldkeeptheyieldsbelow50%ofthebiomass.

  Whenprehistoricmanarrivedinnewpartsoftheworld,somethingstrangehappenedtothelargeanimals:theysuddenlybecameextinct.Smallerspeciessurvived.Thelarge,slow-growinganimalswereeasygame,andwerequicklyhuntedtoextinction.Nowsomethingsimilarcouldbehappeningintheoceans.

  33.Bysaying“thesefiguresareconservative”(Line1,Paragraph3),Dr.Wormmeansthat

  [B]thereareonlyhalfasmanyfisheriesastherewere15yearsago.

  [B]thecatch-sizesareactuallysmallerthenrecorded.

  [D]slow-growingfishoutlivefast-growingones.

  35.Theauthorseemstobemainlyconcernedwithmostfisheries’

  提及大型史前动物的灭绝是为了说明

  [C]theoceanbiomassshouldberestoredtoitsoriginallevel.

  [D]thedatacollectedsofarareoutofdate..

  Dr.Wormacknowledgesthatthesefiguresareconservative.Onereasonforthisisthatfishingtechnologyhasimproved.Today’svesselscanfindtheirpreyusingsatellitesandsonar,whichwerenotavailable50yearsago.Thatmeansahigherproportionofwhatisintheseaisbeingcaught,sotherealdifferencebetweenpresentandpastislikelytobeworsethantheonerecordedbychangesincatchsizes.Intheearlydays,too,longlineswouldhavebeenmoresaturatedwithfish.Someindividualswouldthereforenothavebeencaught,sincenobaitedhookswouldhavebeenavailabletotrapthem,leadingtoanunderestimateoffishstocksinthepast.Furthermore,intheearlydaysoflonglinefishing,alotoffishwerelosttosharksaftertheyhadbeenhooked.Thatisnolongeraproblem,becausetherearefewersharksaroundnow.

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