大学英语六级(阅读)模拟试卷18(题后含答案及解析).pdfVIP

大学英语六级(阅读)模拟试卷18(题后含答案及解析)--第1页

(题后含答案及解析)

题型有：4.ReadingComprehension(ReadinginDepth)

PartIVReadingComprehension(ReadinginDepth)(25minutes)

SectionBDirections:Thereare2passagesinthissection.Eachpassageis

followedbysomequestionsorunfinishedstatements.Foreachofthemtherearefour

choicesmarkedA,B,CandD.Youshoulddecideonthebestchoice.

Thenewsabouttheworldsoceansin2003wasn’tthatthey’reintrouble

—thatmuchwasalreadyclear—butthatthescaleofdevastationisfargreaterthan

anyonehadrealized.Ashockingstudyrevealedthatafull90percentofthespecies

mostdesirabletofishmongers(鱼商)—tuna,halibut,sharks,swordfish,grouper—

hasbeenwipedoutinthepasthalfcentury.Buttherewashopefulnewsaswell.

Analternativetoconventionalfishingpractices,whilenotacure-all(万灵药),could

significantlyrestoreravagedfishpopulations.Thechillingcenterpieceoflast

year’smarineresearch:just50yearsofindustrialfishinghasdecimated(大批杀害)the

world’slargepredator(食肉动物)fishspecies,accordingtoareportpublishedin

NatureinMay.Irresponsiblefishingpracticeshaveresultedseverecasualties:Shrimp

trawling(拖网捕捞)intheGulfofMexico,forexample,arecklessprocessinwhich,

foreverytonofshrimpobtained,threetonsoffin-fish(长须鲸)aredestroyedand

discarded—hasshrunklargefishstocksathousandfold.Acrossthe“boardwe’ve

removedeverythingbiggerthanabicyclefromtheo-cean,”saysSte