如何从linq query获取正确的值？

using System;
using System.Linq;
using System.Collections.Generic;

class Program
{
    static void Main()
    {
        // 创建学生集合
        List<Student> students = new List<Student>()
        {
            new Student { Name = "John", Grade = 90 },
            new Student { Name = "Alice", Grade = 85 },
            new Student { Name = "Bob", Grade = 75 },
        };

        // 查询成绩大于80的学生
        var query = from student in students
                    where student.Grade > 80
                    select student;

        // 遍历并打印查询结果
        foreach (var student in query)
        {
            Console.WriteLine($"Name: {student.Name}, Grade: {student.Grade}");
        }
    }
}

class Student
{
    public string Name { get; set; }
    public int Grade { get; set; }
}