random thoughts those days ,i have been thinking about a question that why so many of our students restudy again and again in our senior year in high school? just because we want to go to a key university? maybe sometimes we would prised these students that they were ambitious and have a big dream. however ,i don't think that's the true judgement, in my opinion ,we shoudn't spent our lifetime on doing such work, four years or five years and even more time wasted on this ,we missed so much voluable time doing the intereting work.in a word, chasing our dream has not only way.