各位大虾帮个忙：急需一篇有关“change”的英语演讲稿,篇幅大概4到5分钟的演讲词,谈论范围不要太广,语言风格最好要有英美语言习惯change作变化理解若作品合意可以加分

　　Change The Ingredients Of Your Life　　This is a glass of water,tasteless,right?However if you add sugar,it will taste sweet,but if you add vinegar,it will become bitter.The same is true with our ...