1. (2019高三下·浙江月考) 有如下VB程序段：

i = 1: j = 8

key = Text1.Text: f = False

Do While i <= j And Not f

    m = Int((i + j) / 2)

    If a(m) = key Then

        f = True: List1.AddItem Str(m) + " is good luck!"

    ElseIf a(m) > key Then

        j = m - 1: List1.AddItem Str(m)

    Else

        i = m + 1: List1.AddItem Str(m)

    End If

Loop

If Not f Then List1.AddItem "sorry!"

a(1)到a(8)依次为"as"、"book"、"can"、"pig"、"see"、"you"、"we"、"zero"。当在文本框Text1中输入以下哪个内容时，列表框list1中显示的结果和别的三项不一样（    ）