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此资料由网络收集而来，如有侵权请告知上传者立即删除。资料共分享，我们负责传递知识。大学生2分钟英语演讲稿精选范文篇一SoyfoodgoodforwomenWomenwhoatesoyregularlyaschildrenhavealowerriskofbreastcancer,Americanresearchersreport.Andmenwhoeatfishseveraltimesaweekhavealowerriskofcoloncancer,asecondteamofresearchershavetoldtheAmericanAssociationforCancerResearch.Thestudiesaddtoagrowingbodyofevidenceabouttheroleofdietincancer.Cancerexpertsnowbelievethatuptotwo-thirdsofallcancerscomefromlifestylefactorssuchassmoking,dietandlackofexercise.TheUSNationalCancerInstituteandresearchersattheUniversityofHawaiifoundthatwomenwhoatethemostsoy-basedfoods,suchastofuandmiso,whenaged5to11,reducedtheirriskofdevelopingbreastcancerby58percent.Itwasnotclearhowsoymightpreventcancer,thoughcompoundsinsoycalledisoflavoneshaveestrogen-likeeffects.Asecondstudyshowedthatmenwhoatefishatleastfivetimesaweekhada40percentlowerriskofdevelopingcolorectalcancercomparedwithmenwhoatefishlessthanonceaweek.Manykindsoffisharerichinomega-3fattyacids,whichinterferewiththecyclooxygenase-2orCOX-2enzyme.COX-2affectsinflammation,whichmayplayaroleintumourgrowth.据美国研究人员报告，儿童时期经常吃豆类食品的女性患乳腺癌的风险较小。另一组研究人员则向美国癌症研究协会提出，一周吃几次鱼的男性患结肠癌的几率较小。这两项研究进一步证明了饮食对于防癌的作用。癌症防治专家认为，在所有种此资料由网络收集而来，如有侵权请告知上传者立即删除。资料共分享，我们负责传递知识。类的癌症中，多达三分之二都是由吸烟、节食及缺乏锻炼等不健康的生活方式造成的。美国全国癌症研究所和夏威夷大学的研究人员发现，在5岁至11岁时经常吃豆腐、味噌等豆类食品的女性患乳腺癌的几率要低58%。至于豆类食品为什么可以防癌还不清楚，不过大豆中所含的名叫异黄酮的化合物具有雌性激素的作用。另一项研究表明，一周吃鱼至少五次的男性患结肠癌的风险要比那些一周都吃不到一次鱼的男性低40%。很多鱼类中所富含的Omega-3脂肪酸能够抑制环氧化酶2的活性。环氧化酶2会引起发炎，这可能会刺激肿瘤的生长。篇二LadiesandGentlemen,Goodafternoon!I’mverygladtostandhereandgiveyouashortspeech.Todaymytopicis“;youth”;.Ihopeyouwilllikeit,andfoundtheimportanceinyouryouthsothatmorecherishit.FirstIwanttoaskyousomequestions:1、Doyouknowwhatisyouth?2、Howdoyoumasteryouryouth?YouthYouthisnotatimeoflife,itisastateofmind;itisnotrosycheeks,redlipsandsuppleknees,itisamatteroftheemotions:itisthefreshness;itisthefreshnessofthedeepspringsoflife.Youthmeansatemperamentalpredominanceofcourageovertimidityoftheappetite,foradventureovertheloveofease.Thisoftenexistsinamanof60morethanaboyof20.Nobodygrowsoldmerelybyanumberofyears.Wegrowoldbydesertingourideals.Yearswrinkletheskin,buttogiveupenthusiasmwrinklesthesoul.Worry,fear,self–distrustbowstheheartandturnsthespiritbacktodust.Whether60of16,thereisineveryhumanbeing‘sheartthelureofwonders,theunfailingchildlikeappetiteofwhat’snext此资料由网络收集而来，如有侵权请告知上传者立即删除。资料共分享，我们负责传递知识。andthejoyofthegameofliving.Inthecenterofyourheartandmyheartthere’sawirelessstation:solongasitreceivesmessagesofbeauty,hope,cheer,courageandpowerfrommenandfromtheinfinite,solongasyouareyoung.Whentheaerialsaredown,andyourspiritiscoveredwithsnowsofcynicismandtheiceofpessimism,thenyouaregrownold,evenat20,butaslongasyouraerialsareup,tocatchwavesofoptimism,thereishopeyoumaydieyoungat80.Thankyou!青春青春不是指岁月，而是指心态。粉嫩的脸，红润的唇，矫健的膝并不是青春。青...