有没有办法在linq中做到这一点？

var numbers = new List<int> { 5, 10, 15, 20 };
var query = from num in numbers
            where num > 10
            select num;

var strings = new string[] { "Apple", "Banana", "Apricot", "Orange" };
var query = strings.Where(s => s.StartsWith("A"));

var numbers = new List<int> { 5, 10, 15, 20 };
var query = numbers.OrderBy(num => num);

var numbers = new List<int> { 5, 10, 15, 20 };
var sum = numbers.Sum();

var fruits1 = new string[] { "Apple", "Banana", "Orange" };
var fruits2 = new string[] { "Orange", "Grape", "Kiwi" };
var query = fruits1.Intersect(fruits2);

var numbers = new List<int> { 1, 2, 3, 4, 5, 6 };
var query = from num in numbers
            group num by num % 2 == 0 into g
            select new { IsEven = g.Key, Numbers = g.ToList() };