题目

People who are confident really seem to be naturally outstanding and just seem to do everything with more styles than others.   16  It is a habit that everyone can develop in life. Try these simple tips to drill and build up your confidence: 1. Admit your shortcomings calmly. Do not try to escape from them or cover them. Face them bravely.   17  Fight against them every day until the day when you could break away and conquer them. 2. Dress for self-confidence.     18  And therefore pay attention to your dress, display your unique physical advantages and exhibit your bes果园里有桃树和苹果树共477棵，已知苹果树的棵数比桃树少20%，果园里桃树、苹果树各有多少棵？（用方程解）