大学英语演讲作业PPT健康茶饮

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AnticancerHotDrinksforWinterDoyoulikehotdrinks?Doyouhavethehabit?NowIwillintroducesomedrinksthatpreservepeopleshealthinwinter.1.GreenteaGreentea,whichismadeofunfermented(未发酵的)tealeaves,ishealthybecauseitcontainshighamountsofantioxidants(抗氧化剂)thatarecalledpolyphones(多酚类),accordingtotheUniversityofMarylandMedicalCenter.Studieshaveshownthatdrinkingthreecupsofgreenteaadaycandecreaseheartattackrateby11percent,andthatitcanalsoraiselevelsof“good”HDLcholesterol(胆固醇).Otherresearchhaslinkeddrinkinggreenteawithlowerlevelsofbladder,breastandcolorectalcancer.2.BlackteaBlacktea--whichincludesearlgrey--alsohasantioxidantsthatcanprotectthebodyfromtheeffectsoffreeradicals,Beauvaissaid.Unlikegreentealeaves,blacktealeavesarefermentedorcrushed(发酵、碾压过的).Somepeoplemightthinkthatgreenteaisactuallyhealthierthanblacktea,butWebMDreportedthatbothactuallycontainthesameamountofantioxidantpolyphones(抗氧化剂茶多酚).BBCNewsalsoreportedin2006thatregularlydrinkingblackteacouldlowerlevelsofthestresshormonecortical(荷尔蒙皮质醇).Beauvaisaddedthatteaitselfhasnocalories,butwhenyoustartaddingsugar,cream,thatcaneasilyratchetupthecaloriecount.3.coffeeJustliketea,coffeealsocontainscell-protectiveantioxidantsCoffeehasbeenmostlyshowntodecreasetheriskofcertaincancers--drinkingsixcupsofcoffeeadayhasbeenshowntoslashprostate(前列腺)cancerriskanddrinkingfiveormorecupsofcoffeeadayhasbeenshowntoreducebreastcancerrisk.Butotherresearchsuggeststhatdrinkingatleasttwocupsofcoffeeadaycanincreaselungcancerrisk.HarvardUniversityreportedthatcaffeinatedcoffeealsohasprotectiveeffectsagainstdiabetesandgallstones(胆结石).Cider(苹果醋)ismadefromthewholefruitoftheapple,“BeauvaistoldHuffPost,so”there‘svitaminCintheapples,there’sevenalittlebitofiron,potassium,withoutputtinganythinginthere.4.ciderWeshouldputcidersomewhereonthesamelevelasfruitjuices….Wishyouahealthierlife!

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