阅读理解
Peoplebornintheautumnlivelongerthanthoseborninthespring.Theyarelesslikelytofallchronic(长期的)illwhentheyareolderaccordingtoanAustrianscientist.Usingcensus(人口普查)dataformorethanonemillionpeopleinAustriaDenmarkandAustraliascientistsattheMaxPlanckInstituteforDemographicResearchinthenorthernGermantownofRostockfoundthemonthofBirthwasrelatedtolifeexpectancy(估计寿命)overtheageof50.Seasonaldifferencesinwhatmothersateduringpregnancyandinfectionsoccurringatdifferenttimesoftheyearcouldbothhaveanimpactonthehealthofanew-bornbabyandcouldinfluenceitslifeexpectancyinolderage.“Amothergivingbirthinspringspendsthelastphaseofherpregnancyinwinterwhenshewilleatlessvitaminsthaninsummer”saidGabrieleDoblhammeroneofateamofscientistswhocarriedouttheresearch.“Whenshestopsbreast-feedingandstartsgivingherbabynormalfoodit’sinthehotweeksofsummerwhenbabiesareprone(容易的)toinfectionsofthedigestivesystem.”InAustriaadultsborninautumnlivesaboutsevenmonthslongerthanthoseborninspringandinDenmarkadultswithbirthdaysinautumnoutlivedthoseborninspringbyaboutfourmonths.Inthesouthernhemispherethepicturewassimilar.AdultsbornintheAustralianautumnlivedaboutfourmonthslongerthanthosebornintheAustralianspring.Thestudyfocusedonpeoplebornatthebeginningofthe20thcenturyusingdeathcertificatesandcensusdata.
(1)
Whichofthefollowingistrue?
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A.
AustriaandDenmarkarebothinthenorthernhemisphere.
B.
Peopleborninautumnlivelongerthanthoseborninsummer.
C.
BothAustriaadultsandAustralianadultswithbirthdaysinautumnliveaboutfourmonthslongerthanthoseborninspring.
D.
Thestudyiscarriedoutmainlyamongpeoplebornattheendofthe20thcentury.
(2)
Whichisnotthefactorthatcausesthelifeexpectancydifferencesbetweenpeoplebornindifferentseasons?
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A.
Whatmothereatduringpregnanc