阅读理解IntheUnitedStates．30percentoftheadultpopulationhasa“weightproblem”．Tomanypeoplethecauseisclear：Weeattoomuch．Butscientificevidence(科学证明)doeslittleto

　　阅读理解

　　IntheUnitedStates．30percentoftheadultpopulationhasa“weightproblem”．Tomanypeoplethecauseisclear：Weeattoomuch．Butscientificevidence(科学证明)doeslittletosupportthisidea．GoingbacktotheAmericaof1910wefindthatpeoplewerethinnerthantodayyettheyatemorefood．Inthosedayspeopleworkedharderphysically(体力地)walkedmoreusedmachinesmuchlessanddidn’twatchtelevision．

　　Severalmodernstudiesmoreover(此外)haveshownthatfatterpeopledon’teatmoreonaveragethanthinnerpeople．Infactsomeinvestigationssuchasa1970studyof3545Londonofficeworkersreportthatonbalancefatpeopleeatlessthanslimmer(苗条)people．

　　Studiesshowthatslimpeoplearemoreactivethanfatpeople．AstudybyaresearchgroupatStanfordUniversitySchoolofMedicinefoundthefollowinginterestingfacts．

　　Themorethemenranthegreaterlossofbodyfat．

　　Themoretheyranthegreatertheirincreaseinfoodintake(吸收)．

　　Thusthosewhoranthemostatethemostyetlostgreatestamountofbodyfat．

　　(1)

　　WhatkindofphysicalproblemdomanyadultAmericanshave?

　　[]A．

　　Theyaretooslim．

　　B．

　　Theyworktoohard．

　　C．

　　Theyaretoofat．

　　D．

　　Theylosetoomuchbodyfat．

　　(2)

　　Istherescientificevidencetosupporteatingtoomuchisthecauseofa“weightproblem”?

　　[]A．

　　Yesthereisplentyofevidence．

　　B．

　　Ofcoursethereissomeevidencetoshowthisistrue．

　　C．

　　Thereishardlyanyscientificevidencetosupportthis．

　　D．

　　Wedon’tknowbecausetheinformationisnotgive