阅读理解。阅读下列短文, 从给的四个选项 (A、B、C和D) 中, 选出最佳选项。
Life is not a beauty contest.We all focus on our imperfections(瑕疵)．In fact，you should see yourself in a proper way.It's necessary for you to know that self knowledge(自知之明)is the most important beauty secret.
