使用BinaryWriter和BinaryReader读取二进制流文件时，描述错误的是（ ）class Program { static void Main(string[] args) { FileStream fsW = new FileStream(@"c:\1.bin", FileMode.Create, FileAccess.Write); BinaryWriter bwMyFile = new BinaryWriter(fsW); string s = "恭喜你学会了"; int grade = 100; bwMyFile.Write(s); bwMyFile.Write(grade); bwMyFile.Close(); fsW.Close(); FileStream fsR = new FileStream(@"c:\1.bin", FileMode.Open, FileAccess.Read); BinaryReader brMyFile = new BinaryReader(fsR); Console.WriteLine(brMyFile.ReadInt32()); Console.WriteLine(brMyFile.ReadString()); } }