大学英语演讲作业PPT健康茶饮

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！