在窗体上画一个命令按钮和一个文本框,其名称分别为Command1和Text1,再编写如下程序: Dim ss As String Private Sub Text1_KeyPress(KeyAscii As Integer) If Chr(KeyAscii)<>""Then ss=ss+Chr(KeyAscii) End Sub Private Sub Command1_Click() Dim m As String,i As Integer For i=Len(ss) To 1 Step-1 m=m+Mid(ss,i,1) Next Text1.Text=UCase(m) End Sub 运行程序后,在文本框中输入"Visual Basic 2011",并单击命令按钮,则文本框中显示的是______。
A) VISUAL BASIC B) ISUAL BASIC 2011 C) CISAB LAUSIV 2011 D) 1102 CISAB LAUSIV