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全国英语四级阅读模拟试题及详解全国英语四级阅读模拟试题及详解 xx年英语考试备考工作正在进行中,备考复习资料必不可少,下面是为大家搜索的英语四级辅导练习,希望能给大家带来帮助! Like aneedle climbingup abathroom scale,the numberkeeps rising.In1991,15%of Americanswere obese肥胖的;by1999,that proportionhad grownto27%.Youngsters,who shouldhave ageand activityon theirside,are growinglarger aswell:19%of Americansunder17are obese.Waistbands havebeen poppingin otherwestern countriestoo,as physicalactivity hasdeclined anddiets haveexpanded.By andlarge,people inthe richworld seemto havelost thefight againstflab松弛. Meanwhile,poorer nationshave enjoyedsome suessin theirbattles againstmalnutrition andfamine.But,aording toresearch presentedat theannual meetingof theAmerican Associationfor theAdvancement ofScience,it ismore acase ofbeing outof thefrying panand intothe fire.The moststriking exampleactually inthe poorworld esfrom thePacific islands,home ofthe world’s mostobese munities.In1966,...。