下列程序段执行后,Label1显示的是______。 Dim s As String = "你好,大美,我爱你!" Dim s1 As String Dim k, p As Integer k = InStr(s, "") p = Len(s) Do While k > 0 s1 = Microsoft.VisualBasic.Left(s, k - 1) s1 &= "HUST" s1 &= Microsoft.VisualBasic.Right(s, p - k + 1 - Len("")) s = s1 k = InStr(s, "") p = Len(s) Loop Label1.Text = s