程序代码：

objThreadTwo.Priority = ThreadPriority.Highest;
这句咋没好用呢？  运行结果依然是 第一个线程先运行~
class Program
    {
        static void Main(string[] args)
        {
            Thread.CurrentThread.Name = "主线程";
            Thread objThreadOne = new Thread(new ThreadStart(TaskOne));
            objThreadOne.Name = "子线程1";
            Thread objThreadTwo = new Thread(new ThreadStart(TaskTwo));
            objThreadTwo.Name = "子线程2";
            objThreadOne.Start();
            objThreadTwo.Start();

            objThreadTwo.Priority = ThreadPriority.Highest;

            Console.ReadLine();
        }

        static void TaskOne()
        {
            for (int i = 0; i <= 5; i++)
            {
                Console.WriteLine(i*2);
            }
        }

        static void TaskTwo()
        {
            for (int index = 5000; index >= 4990;index-- )
            {
                Console.WriteLine(index);
            }
        }