public abstract class HongShaoRou
{
    public void MakeHongShaoRou()
    {
      You();
      Rou();
      Others();
      TiaoLiao();
    }
    public void You()
    {
      Console.WriteLine("放入油");
    }
    public void Rou()
    {
      Console.WriteLine("放入肉");
    }
    public abstract void Others();
    public void TiaoLiao()
    {
      Console.WriteLine("放入调料");
    }
}

public class SiChuangHongShaoRou : HongShaoRou
{
    public override void Others()
    {
      Console.WriteLine("放入芝麻酱");
    }
}

class Program
{
    static void Main(string[] args)
    {
      HongShaoRou hongShaoRou = new SiChuangHongShaoRou();
      hongShaoRou.MakeHongShaoRou();
      Console.ReadKey();
    }
}