1. (2020高二上·諸暨期末) 數(shù)組a為一組已按降序排序的正整數(shù)，依據(jù)對分查找思想：設(shè)計一個在數(shù)組a中查找數(shù)據(jù)Key的程序。實現(xiàn)該功能的VB程序段如下：

Dim a(1 To 6) As Integer

Const n = 6

a(1) = 98: a(2) = 96: a(3) = 95

a(4) = 90: a(5) = 87: a(6) = 81

i = 1: j = n

Key = Val(Text1.Text)

f = False

Do While  And f = False

    m = (i + j) \ 2

    If a(m) = Key Then

        Text1.Text = "已找到": f = True

    ElseIf a(m) > Key Then

       

    Else

       

    End If

Loop

上述程序中方框處語句依次為（    ）