2022大学生2分钟英语演讲稿高校生2分钟英语演讲稿精选范文篇一SoyfoodgoodforwomenWomenwhoatesoyregularlyaschildrenhavealowerriskofbreastcancer,Americanresearchersreport.Andmenwhoeatfishseveraltimesaweekhavealowerriskofcoloncancer,asecondteamofresearchershavetoldtheAmerican第1页共15页AssociationforCancerResearch.Thestudiesaddtoagrowingbodyofevidenceabouttheroleofdietincancer.Cancerexpertsnowbelievethatuptotwo-thirdsofallcancerscomefromlifestylefactorssuchassmoking,dietandlackofexercise.TheUSNationalCancerInstituteandresearchersattheUniversityofHawaiifoundthatwomenwhoatethemostsoy-basedfoods,suchastofuandmiso,whenaged5to11,reducedtheirriskofdevelopingbreastcancerby58per第2页共15页cent.Itwasnotclearhowsoymightpreventcancer,thoughcompoundsinsoycalledisoflavoneshaveestrogen-likeeffects.Asecondstudyshowedthatmenwhoatefishatleastfivetimesaweekhada40percentlowerriskofdevelopingcolorectalcancercomparedwithmenwhoatefishlessthanonceaweek.Manykindsoffisharerichinomega-3fattyacids,whichinterferewiththecyclooxygenase-2orCOX-2enzyme.第3页共15页COX-2affectsinflammation,whichmayplayaroleintumourgrowth.据美国探讨人员报告，儿童时期常常吃豆类食品的女性患乳腺癌的风险较小。另一组探讨人员则向美国癌症探讨协会提出，一周吃几次鱼的男性患结肠癌的几率较小。这两项探讨进一步证明白饮食对于防癌的作用。癌症防治专家认为，在全部种类的癌症中，多达三分之二都是由吸烟、节食及缺乏熬炼等不健康的生活方式造成的。美国全国癌症探讨所和夏威夷高校的'探讨人员发觉，在5岁至第4页共15页11岁时常常吃豆腐、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晰，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。另一项探讨表明，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%。许多鱼类中所富含的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。篇二第5页共15页LadiesandGentlemen,Goodafternoon!I’mverygladtostandhereandgiveyouashortspeech.Todaymytopicis;youth;.Ihopeyouwilllikeit,andfoundtheimportanceinyouryouthsothatmorecherishit.FirstIwanttoaskyousomequestions:1、Doyouknowwhatisyouth?2、Howdoyoumasteryouryouth?Youth第6页共15页Youthisnotatimeoflife,itisastateofmind;itisnotrosycheeks,redlipsandsuppleknees,itisamatteroftheemotions:itisthefreshness;itisthefreshnessofthedeepspringsoflife.Youthmeansatemperamentalpredominanceofcourageovertimidityoftheappetite,foradventureovertheloveofease.Thisoftenexistsinamanof60morethanaboyof20.Nobodygrowsoldmerelybyanumberofyears.Wegrowoldbydesertingourideals.第7页共15页Yearswrinkletheskin,buttogiveupenthusiasmwrinklesthesoul.Worry,fear,self–distrustbowstheheartandturnsthespiritbacktodust.Whether60of16,thereisineveryhumanbeing‘sheartthelureofwonders,theunfailingchildlikeappetiteofwhat’snextandthejoyofthegameofliving.Inthecenterofyourheartandmyheartthere’sawirelessstation:solongasitreceivesmessagesofbeauty,hope,cheer,courageandpowerfrommenandfromthe第8页共15页infinite,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，矫捷的膝第9页共15页并不是青春。青春表现在意志的坚毅与软弱。想象的丰富与苍白、情感的充足与贫乏等方面。青春是生命深处清泉的喷涌。青春是追求。只有当志气盖过怯弱、...
