【英语阅读题会点英语的近来150分UlcersEventhoughulcersappeartoruninfamilies,lifestyleplaysmoreofrolethangeneticfactorsincausingtheillness,accordingtoareportintheApril13thJournalofInternalMedicine.Inparticul】
英语阅读题会点英语的近来150分
Ulcers
Eventhoughulcersappeartoruninfamilies,lifestyleplaysmoreofrolethangeneticfactorsincausingtheillness,accordingtoareportintheApril13thJournalofInternalMedicine.Inparticular,smokingandstressinmenandtheregularuseofpainreleasingmedicinesinwomenwerelinkedwithanincreasedriskofdevelopinganulcer.
Overall,61%ofulcerriskappearstobeduetoenvironmentalfactors,suchassmoking,andtheremaining39%isduetogenesaccordingtoDr.IsmoRaihaoftheUniversityofTurkyandcolleaguesattheUniversityofHelsinki,Finland.SomeresearchershadsuggestedthatfamiliesmayspreadHelicobacteriapylori,thebacteriathatcancauseulcers.However,thenewstudysuggeststhisisunlikely,accordingtothereport.
Raihaandcolleaguesstudieddatafrommorethan13,000pairsoftwins“toexaminetherolesofgeneticandenvironmentalfactorsintheoriginofpepticulcerdisease,”theyexplain.Bothtwinsweremorelikelytodevelopanulcerifthepairweregeneticallythesameascomparedwithapairoffraternaltwins,suggestingthattheremustbesomegeneticsusceptibilitytoulcerdevelopment.
However,theriskwasnogreaterintwinslivingtogethercomparedwithtwinslivingapart,suggestingthatsharedexposuretoH.pyloriwasnottoblame.“Environmentaleffectswerenotduetofactorssharedbyfamilymembers,andtheywererelatedtosmokingandstressinmenandtheuseofanalgesicsinwomen,”theauthorswrote.“Theminoreffectsofsharedenvironmenttodiseaseliabilitydonotsupporttheconceptthatthegroupingofriskfactors,suchasH.pyloriinfection,wouldexplainthegeneticfactorofpepticulcerdisease,”theyconcluded.
1.Accordingtothepassage,whichofthefollowingisaverylikelycauseofulcerinmen?
A.Smokingandstress.
B.Drinkingandsmoking.
C.Genesandchildren.
D.Useofacertainmedicine.
2.Whatfactorscontributetooverhalftheulcers?
A.Hereditaryfactors.
B.Economicfactors.
C.Environmentalfactors.
D.Geneticfactors.
3.Inrelationtoulcers,expertsstudytwinsinordertoexamine
A.therolesofgeneticfactors.