雅思考试阅读模拟试题.doc

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1、雅思考试阅读模拟试题更多雅思报名官网的最新消息，最专业的雅思备考资料，无忧考网将为大家发布。★newweapontofightcancer1.Britishscientistsarepreparingtolaunchtrialsofaradicalnewwaytofightcancer，whichkillstumoursbyinfectingthemwithviruseslikethecommoncold.2.Ifsuccessful，virustherapycouldeventuallyformathirdpillar

2、alongsideradiotherapyandchemotherapyinthestandardarsenalagainstcancer，whileavoidingsomeofthedebilitatingside-effects.3.LeonardSeymour，aprofessorofgenetherapyatOxfordUniversity，whohasbeenworkingonthevirustherapywithcolleaguesinLondonandtheUS，willleadthetrialslater

3、thisyear.CancerResearchUKsaidyesterdaythatitwas11excitedbythepotentialofProfSeymour'spioneeringtechniques.4.Oneofthecountry'sleadinggeneticists，ProfSeymourhasbeenworkingwithvirusesthatkillcancercellsdirectly，whileavoidingharmtohealthytissue."Inprinciple，you'vegot

4、somethingwhichcouldbemanytimesmoreeffectivethanregularchemotherapy，"hesaid.5.Cancer-killingvirusesexploitthefactthatcancercellssuppressthebody'slocalimmunesystem."Ifacancerdoesn'tdothat，theimmunesystemwipesitout.Ifyoucangetavirusintoatumour，virusesfindthemaverygo

5、odplacetobebecausethere'snoimmunesystemtostopthemreplicating.Youcanregarditasthecancer'sAchilles'heel."6.Onlyasmallamountofthevirusneedstogettothecancer."Theyreplicate，yougetamillioncopiesineachcellandthecellburstsandthey11infectthetumourcellsadjacentandrepeatthe

6、process，"saidProfSeymour.7.Preliminaryresearchonmiceshowsthatthevirusesworkwellontumoursresistanttostandardcancerdrugs."It'saninterestingpossibilitythattheymayhaveanadvantageinkillingdrug-resistanttumours，whichcouldbequitedifferenttoanythingwe'vehadbefore."8.Rese

7、archershaveknownforsometimethatvirusescankilltumourcellsandsomeaspectsoftheworkhavealreadybeenpublishedinscientificjournals.Americanscientistshavepreviouslyinjectedvirusesdirectlyintotumoursbutthistechniquewillnotworkifthecancerisinaccessibleorhasspreadthroughout

8、thebody.9.ProfSeymour'sinnovativesolutionistomaskthevirusfromthebody'simmunesystem，effectivelyallowingthevirusestodowhatchemotherapydrugsdo11-spreadthroughtheb