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有如下VB程序段:
Dim i As Integer, c As String, s As String, t As String
s = "2012 Hero": t = ""
For i = 1 To Len(s)
c= Mid(s, i, 1)
If c >= "a" And c <= "z" Then t = t + c
Next i
Text1.Text = t
该程序段运行后,文本框Text1中显示的内容是()
A.2012B.HeroC.eroD.2012 H
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