Finally， I want to discuss the shortage of this thesis In the process of the writing and modification of thesis， I more and more know I's knowledge and empirical of Although， I collect material possibly， sparing no effort can make use of the knowledge that oneself learns to carry on a thesis writing，the thesis still keeps existing the place of much shortage and needs an Please more criticize to correct， let me arrive in aftertime's study high school more， thank teacher
Finally， I want to talk about the shortcomings of this In the process about paper writing and revision， I am becoming to realized that knowledge and lack of experience I have tried my best to collect materials， and to thesis writing by learned knowledge， but mistakes still be over there， I want the teacher criticized me， so that I can learn more in the ， thank the teacher a lot
