大学英语四级阅读选词填空模拟题及答案解析.doc

《大学英语四级阅读选词填空模拟题及答案解析.doc》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、第一篇Climatechangehasclaimeditslatestvictim：Limacinahelicina，aplanktonic，predatory(捕食的)seasnailthat’samemberofthetaxonomicgroupmore(36)__________knownasseabutterflies．(Thenameis(37)__________fromthewing-likelobes(叶瓣)thetinycreaturesusetogetaround．)Inastudy(38)___

2、_______publishedinjoumalProceedingsoftheRoyalSocietyB，agroupofscientistsfromtheNationalOceanicandAtmosphericAdministration(NOAA)andOregonStateUniversityhavefoundthatthePacificOcean’sdecreasingpH—itsacidifying(酸化)，inotherwords-isdissolvingL．helicina’sthinshells．

3、　　Theresearcherscollectedseabutterfly(39)__________from13sitesalongthePacificcoast(betweenWashingtonandsouthernCalifornia，goingovereachwithascanningelectronmicroscope．Morethanhalfoftheshells(53％)fromonshoreindividuals(40)__________signsof“severedissolutiondamag

4、e，”while24％of(41)__________individualssuffereddissolutiondamage．Thestudy’s(42)__________investigator,Dr.NinaBednarsekofNOAA，describedtheaffectedL．helicinashellsashavingatexturenotunlike“cauliflower”or“sandpaper．”　　Accordingtothepaper，therewasa“strongpositive(43

5、)__________”betweentheproportionofseabutterflieswithsevereshelldissolutiondamageand“thepercentageof　undersaturated(未达到饱和的)water”neartheocean’ssurface．Theresearchersconclude“shelldissolutionowingto(human．causedocean(44)_________hasdoubledinnearshorehabitatssince

6、pre．industrialconditionsacrossthisregionandisontracktotripleby2050，”atruly(45)__________prediction．Moreover,thebroaderimplicationsforecosystemareunclear,asdamagedshellsmakeitharderforL．helicinatofightinfections，staybuoyant，andprotectthemselvesfrompredators．A.sh

7、owedB.recentlyC.protectedD.commonlyE.derivedF.samplesG.offshoreH.principalI.noticedJ.correlationK.encouraging L.seawardM.acidificationN.grimO.pollution词性归类　　答案解析第二篇Thesocialnetworkwillletusers“mute”messagesfromotherusersontheirtimelineswithoutthemutedperson’skn

8、owledge，therebyavoidingthe(36)__________processofhavingtounfollow(取消关注)，orputupwith，your(37)__________talkativeIRLfriends．Twitterrolledoutnew(38)__________toletusersbetterma