自我介绍的英语演讲稿

　　i started my journey in california with a uc berkley 30-year

　　longitudinal study that examined the photos of students in an old yearbook and tried to measure their success and well-being throughout their life. by measuring their student smiles, researchers were able to predict how fulfilling and long-lasting a subjects marriage will be, how well she would score on standardized tests of well-being and how inspiring she would be to others. in another yearbook, i stumbledupon barry obamas picture. when i first saw his picture, i thought that these superpowers came from his super collar. but now i know it was all in his smile. nother aha! moment came from a 20xx wayne state university research project that looked into pre-1950s baseball cards of major league players. the researchers found that the span of a players smile could actually predict the span of his life. players who didnt smile in their pictures lived an average of only years, where players with beaming smiles lived an average of almost 80 years.