升学考试与生成器模式

凭印象，可能概念不对？ 等我晚上回去看看书，也欢迎大家帮我：）

using System;
using System.Collections.Generic;
using System.Text;

namespace 生成器模式
{
    class Program
    {
        static void Main(string[] args)
        {
            try
            {
                //要想升学一定要学习
                升学 小朋友Ａ = new 学习();
                //当然要经过考试
                new 考试(小朋友Ａ);

                小朋友Ａ.升学成功();
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message);
            }

            Console.Read();
        }
    }

    interface 升学
    {
        double 语文成绩
        { get;set;}
        double 数学成绩
        { get;set;}
        double 外语成绩
        { get;set;}

        void 升学成功();
    }

    class 学习 : 升学
    {
        double 语文 = 0;
        double 数学 = 0;
        double 外语 = 0;

        public double 语文成绩
        {
            get
            {
                return 语文;
            }
            set
            {
                语文 = value;
            }
        }

        public double 数学成绩
        {
            get
            {
                return 数学;
            }
            set
            {
                数学 = value;
            }
        }

        public double 外语成绩
        {
            get
            {
                return 外语;
            }
            set
            {
                外语 = value;
            }
        }

        public void 升学成功()
        {
            if (语文 < 60)
            {
                throw new Exception("语文不及格，别想升学");
            }

            if (数学 < 60)
            {
                throw new Exception("数学不及格，别想升学");
            }

            if (外语 < 60)
            {
                throw new Exception("外语不及格，别想升学");
            }

            Console.WriteLine("我终于升学成功了");
        }
    }

    class 考试
    {
        升学 天天学习;

        private 考试()
        { }

        public 考试(升学 天天学习)
        {
            this.天天学习 = 天天学习;
            最终考试();
        }

        void 最终考试()
        {
            Random rd = new Random();
            天天学习.数学成绩 = (double)rd.Next(1, 100);
            天天学习.外语成绩 = (double)rd.Next(1, 100);
            天天学习.语文成绩 = (double)rd.Next(1, 100);
        }
    }
}