2015 年上半年北京地区成人本科学士学位英语统一考试2015.05.09Part I Reading Comprehension (30%)Directions:Thereare three passages in this part. Eachpassage is followedbysome questionsor unfinishedstatements. Foreach ofthem there are fourchoices markedA,B,C and D,Youshoulddecide on the bestchoiceand blackenthe corresponding letteron the AnswerSheet.Passage 1Questions1 to 5 are basedon the followingpassage:Babieswhoare breast-fedmaybemore likelyto besuccessfulin life,a newstudypublishedTuesdaysuggests.Thestudyfollowedmore than 3,000babiesinto adulthoodin Brazil.Theresearchers foundthose whowerebreast-fedscored slightlyhigher in intelligencetests in their 30s,stayedin schoollongerand earned moremoneythan those whoweregivenformula（配方奶粉）.“Breast-feedingnot onlyhas short-termbenefits,butalsobreast-feedinghas long-termbenefits,"saysBernardoLessaHortaofthe FederalUniversityofPelotasin Brazil,wholedthe studybeingpublishedin TheLancetGlobalHealth.(76)Doctorshavelongknownthat breast-feedingcan begood fora baby'shealth.Thisis especiallytruein poor countries,wherewatercan be contaminated. Forinstance,a babygivenformulain developingcountriesis 14times more likelyto die in the firstsixmonths than one who'sbreast-fed.In the U.S.,some researchhas suggestedthat breast-feedingmayraise a baby'sIQ（智商）bya fewpoints. Buta recent studywithsiblings（兄弟姐妹）foundlittleadvantageto breast-feeding.Hortasaysthese previousstudiesdidn'tfollowchildreninto adulthoodto see ifbreast-feedinghadlong-termeffects.SoHortaanalyzeddata collectedfrom3,493volunteershe and his colleagueshavebeenfollowingsince birth.Theyare nowin their 30s. First,the researchers gavethe subjectsIQtests. Thosewhowerebreast-fedfor12 months or more had IQtest scores that were3.76points higher than those whowerebreast-fedforlessthan one month,the team found.WhenHortaand his colleagues...
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