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1、2011年职称英语考试[综合类]阅读理解习题 Ulcers Eventhoughulcersappeartoruninfamilies,lifestyleplaysmoreofrolethangeneticfactorsincausingtheillness,accordingtoareportintheApril13thJournalofInternalMedicine.Inparticular,smokingandstressinmenandtheregularuseofpainreleasingme
2、dicinesinwomenwerelinkedwithanincreasedriskofdevelopinganulcer. Overall,61%ofulcerriskappearstobeduetoenvironmentalfactors,suchassmoking,andtheremaining39%isduetogenesaccordingtoDr.IsmoRaihaoftheUniversityofTurkyandcolleaguesattheUniversityofHelsinki,Finland
3、.SomeresearchershadsuggestedthatfamiliesmayspreadHelicobacteriapylori,thebacteriathatcancauseulcers.However,thenewstudysuggeststhisisunlikely,accordingtothereport. Raihaandcolleaguesstudieddatafrommorethan13,000pairsoftwins“toexaminetherolesofgeneticandenvir
4、onmentalfactorsintheoriginofpepticulcerdisease,”theyexplain.Bothtwinsweremorelikelytodevelopanulcerifthepairweregeneticallythesameascomparedwithapairoffraternaltwins,suggestingthattheremustbesomegeneticsusceptibilitytoulcerdevelopment. However,theriskwasnogr
5、eaterintwinslivingtogethercomparedwithtwinslivingapart,suggestingthatsharedexposuretoH.pyloriwasnottoblame.“Environmentaleffectswerenotduetofactorssharedbyfamilymembers,andtheywererelatedtosmokingandstressinmenandtheuseofanalgesicsinwomen,”theauthorswrote.“Th
6、eminoreffectsofsharedenvironmenttodiseaseliabilitydonotsupporttheconceptthatthegroupingofriskfactors,suchasH.pyloriinfection,wouldexplainthegeneticfactorofpepticulcerdisease,”theyconcluded. 1.Accordingtothepassage,whichofthefollowingisaverylikelycauseofulcer
7、inmen? A.Smokingandstress. B.Drinkingandsmoking. C.Genesandchildren. D.Useofacertainmedicine. 2.Whatfactorscontributetooverhalftheulcers? A.Hereditaryfactors. B.Economicfactors. C.Environmentalfactors. D.Geneticfactors. 3.Inrelationtoulcers,expertss
8、tudytwinsinordertoexamine A.therolesofgeneticfactors. B.therolesofenvironmentalfactors. C.therolesofbothgeneticandenvironmentalfactors. D.therolesofbrotherhood. 4.Whatdoes“environmen