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（每日一读）高考英语考前突破 阅读理解能力 文化教育 水果蔬菜与人体健康素材 .doc

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水果蔬菜与人体健康Expertssayeatingarangeoffruitandvegisbestaspartofabalanceddiettoprotectagainstillness.专家表示吃各种水果蔬菜对身体最为有利可以均衡饮食预防疾病。Researchsuggestseatingatleastsevenportionsoffruitandvegetablesadayismoreeffectiveatpreventingdiseasethanthegovernment'scurrentfive-a-dayrecommendation.Isfiveadayenough?Yes-butpeopleshouldeatatleastfiveportionsoffruitandvegetablesadaythegovernmentsays.TheadviceisbasedonWorldHealthOrganizationguidelineswhichare25yearsold.Dieticianssayeatingfiveadayisenoughtogettheprotectivebenefitsoffruitandveg-althougheatingmoremaybeadditionallybeneficial.Whatcountsasaportion?FruitjuicecountstowardsoneportionoftherecommendedfiveportionsperdayForanadultaminimumof400goffruitandvegshouldbeeateneverydayorfiveportionsof80g.Theamountvariesforchildrenbasedonactivitylevelsandagebutaroughguideisthatoneportionshouldfitinthepalmoftheirhand.Fruitandvegetablesdonothavetobeeatenontheirownandcanbecookedindishessuchassoupsstewsorpastameals.Dotinnedfruitandfruitjuicecount?Yes.Butjuiceshouldbeunsweetenedandonlycountsasoneportionadayasitcontainslessfibrethanwholefruitsandvegetables.Fruitmustbetinnedinnaturaljuiceorwaterwithnoaddedsugarorsaltandnotinsyrupwhichlotsoffruitis.Beansandpulsesalsocountbutagainonlyasoneportionastheycontainfewernutrientsthanotherfruitsandvegetables.Smoothiesmaycounttowardsmorethanoneportioniftheycontainalltheediblepulpedfruitorveganddependingontheiringredients.Recommendationsincludefrozenfruitandvegetablesanddriedfruitsuchascurrantsdatessultanasandfigs.Thoseinready-mealsandshop-boughtpastasaucessoupsandpuddingsarealsoincludedbutadviceurges"onlytohavethemoccasionally"orinsmallamountsastheyareoftenhighinsaltsugarand