I will be grateful if somebody would check my errors and tell me his feeling. Words leaved by audiences are the motivation for any author, although I know that my English is poor. If you find errors and mistakes, no doubt that these sentences and words were written by myself, whereas if you find some classical sentences, sadly to say, these were cited from some English essays. Furthermore, I check my essay by using the checking function of Word, but this function cannot find improper using of English words, Chinese English, baby-words and most of grammatical mistakes. So I only can say I am deeply sorry.