【正文】 grown old ,even at 20 , but as long as your aerials are up ,to catch waves of optimism , there is hope you may die young at 80.　　Thank you!【篇三】大學(xué)英語演講稿范文　　Soy food good for women　　Women who ate soy regularly as children have a lower risk of breast cancer, American researchers report. And men who eat fish several times a week have a lower risk of colon cancer, a second team of researchers have told the American Association for Cancer Research.　　The studies add to a growing body of evidence about the role of diet in cancer. Cancer experts now believe that up to twothirds of all cancers e from lifestyle factors such as smoking, diet and lack of exercise.　　The US National Cancer Institute and researchers at the University of Hawaii found that women who ate the most soybased foods, such as tofu and miso, when aged 5 to 11, reduced their risk of developing breast cancer by 58 per cent. It was not clear how soy might prevent cancer, though pounds in soy called isoflavones have estrogenlike effects.　　A second study showed that men