cnn新闻四六级听力材料

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1、听力课堂,开放式英语学习平台！www.TingClass.netCNN新闻听力材料20121018saQuick:nameafamousfemalescientist.Ifyousaid"MarieCurie,"you’renotalone.Infact,alotofpeoplecan’tthinkofasingleotherexample.Well,England'sRoyalSocietyisfixin’torectifythat.OnFriday,October19th,it’ssponsoringaWiki-editingmar

2、athonforarticlesaboutwomeninscience.Wikipediaisthego-tosourceforinformationonprettymucheverything.Butitscoverageisalittlelightwhenitcomestotheachievementsofwomeninscience,technology,engineeringandmath.SotheRoyalSocietyislookingforvolunteerswithwi-fiandabitofWikiknowhowto

3、createorenhanceentriesonfemalescientists.SuggestionsincludeLilianBland,thefirstwomantobuildandflyherownaircraft;MarthaLudwig,whohelpedsolvethefirstproteincrystalstructuredoneintheUS;andBarbaraCrawfordJohnson,theonlywomantoserveontheNASAteamthatengineeredthemoonlanding.Yo

4、ucantakepartintheeffortusingTwitter.Thehashtagis#WomenSciWP.That’swomen-S-C-I-W-P.SogiveMarieCurieawell-earnedrestandhelpotherwomeninsciencegetthewiki-recognitiontheydeserve.—KarenHopkin20121101saTuberculosiskilled1.4millionpeoplelastyear.OnereasonTBissodeadlyisthatTBbac

5、teriamutatequickly.ButsomescientistsarehopingtogetastepaheadofTB'schangesinthefuturebystudyingitspastevolution.RemnantsofTBgenescanremaininaninfectedperson'sbonesforcenturies.AteamofU.K.researchershasbeenabletoisolatesuchTBsequencesfromanoldskeletonusingnewrapidDNAsequen

6、cing.Theproof-of-conceptexercisewasperformedusingtheremainsofayoungwomanburiedinthe1800s.DNAsequencingshowedthatherstrainmatchedonethatcirculatedintheU.S.acenturyago.ThatmatchwasbasedontissuesamplescollectedfromaTBpatientinupstateNewYorkin1905.ThefindingsareintheProceedi

7、ngsoftheNationalAcademyofSciences.[AbigailBouwmanetal,GenotypeofahistoricstrainofMycobacteriumtuberculosis]Onceolderbonescanbestudiedforthesetelltalegenes,scientistsmightbeabletogetnewinsightsintoTB’sdeadlymoves.Andperhapsanticipateitsnextone.学英语，练听力，上听力课堂。【免费英语听力下载】www.

8、tingclass.net-23-听力课堂,开放式英语学习平台！www.TingClass.net—KatherineHarmon20121102saNastybacteriaclingtothesurfa