void Start()
{
//实例化一种修图软件
IChangepicture ICP = new AI();
//实例化风景照
Scenery scenery = new Scenery(ICP);
//调用风景照的change（）方法
scenery.Change();
People people = new People(ICP);
people.Change();
Food food = new Food(ICP);
food.Change();
}
