void Main()
{
    int[] numbers = { 5, 4, 1, 3, 9, 8, 6, 7, 2, 0 }; 

    var skipQuery=numbers.Skip(3);  //跳过前三个元素，结果是 3, 9, 8, 6, 7, 2, 0
    var skipWhileQuery=numbers.SkipWhile(x=>x<6);  //从第一个元素开始,当x<6时就SKIP，所以结果是9, 8, 6, 7, 2, 0
    var query=numbers.Where(x=>x<6); //此时会找到数组内所有<6的元素:  5, 4, 1, 3, 2, 0 
    
    //明白了么
}