题目

有如下 VB 程序段： Dim s As String, ch As String Dim i As Integer, t As Integer s = Text1.Text : t = 0 For i = 1 To Len(s)  ch = Mid(s, i, 1)  If ch <> "," Then t = t * 2 + Val(ch)  Text2.Text = Text2.Text + Str(t) Next i 执行该程序，当文本框Text1中输入了“11，10”时，文本框text2中输出的是（  ） A . 3 2 B . 1 3 7 14 C . 1 3 3 7 14 D . 1 3 3 7 14 14 答案：C

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