单项选择题

在窗体上画一个命令按钮Command1和两个文本框，名称分别为Text 1和 Text 2 Text 2。编写如下两个事件过程：
Dim str As String, strl As String
Private Sub form_load()
Text1. Text = " "
Text2. Text = " "
Text1. Enabled = False
Text2. Enabled = False
End Sub
Private Sub Form KeyPress(KeyAscii As Integer)
str= str&Chr(KeyAscii)
End Sub
Private Sub Form_KeyDown(KeyCode As Integer, Shift As Integer)
str1 = strl&Chr(KeyCode)
End Sub
Private Sub Command1_Click()
Text1. Text =str
Text2. Text = str1
str= " "
str1= " "
End Sub
当在设计阶段把窗体KeyPreview属性设置为True时，程序运行过程中，在键盘上输入小写字母abc，然后单击命令按钮，则文本框Text1中显示的内容为 ______ 。