注：BMI指数的计算公式为：BMI=体重（千克）除以身高（米）的平方（kg/m2）。 BMI<18.5为偏瘦（表明营养不足）；BMI=18.5～24.9为体重正常；BMI=25～29.9为超重；BMI>30为肥胖。

该VB应用程序的代码如下：

Dim stuBMI(1 To 55) As Single

Dim stuName(1 To 55) As String

Private Sub Command1_Click()

    Dim k As Integer, i As Integer, j As Integer

    Dim t1 As Single, t2 As String

    Dim Results As String

    For i = 1 To 54        

        For j = i + 1 To 55

            If stuBMI(j) < stuBMI(k) then      ②    

        Next j

        If  k<>I  Then  

            t1 = stuBMI(i): stuBMI(i) = stuBMI(k): stuBMI(k) = t1

            t2 = stuName(i): stuName(i) = stuName(k): stuName(k) = t2

        End If

    Next i

List1.AddItem "姓名" + vbTab + "BMI指数" + vbTab + "结果"  

    For i = 1 To 55

        If stuBMI(i) < 18.5 Then

            Results = "偏瘦"

        ElseIf stuBMI(i) >= 18.5 And stuBMI(i) < 25 Then

            Results = "正常"

        ElseIf stuBMI(i) >= 25 And stuBMI(i) < 30 Then

            Results = "超重"

        Else

            Results = "肥胖"

        End If

        List1.AddItem stuName(i) + vbTab + str(stuBMI(i)) + vbTab + Results

    Next i

End Sub

Private Sub Form_load()

    Dim conn As New ADODB.Connection

    Dim rs As New ADODB.Recordset

    Dim strSQL As String

    Dim i As Integer

    conn.ConnectionString = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + App.Path + "\Student.accdb"

    conn.Open

    strSQL = "SELECT * FROM Student"

    Set rs.ActiveConnection = conn

    rs.Open strSQL

    i = 0

    Do While Not rs.EOF

        i = i + 1

        stuName(i) = rs.Fields("StuName")

        stuBMI(i) = Round(rs.Fields("Weight") / rs.Fields("height") ^ 2, 1)

        rs.MoveNext

    Loop

    rs.Close

    conn.Close

    Set rs = Nothing

    Set conn = Nothing

End Sub

实现上述功能的VB程序如下，但加框处代码有错，请改正。

Const n=8

Dim a(1 To n)  As Integer

Private Sub Command1_Click()

  Dim i As Integer，j As Integer，k As Integer，t As Integer

  Dim flag As Boolean

  ‘读取一组正整数，存储在数组a中。代码略

  For i=1 To n-1

               ‘(1)

If IsPrime(a(k))Then flag=True Else flag=False

      For j=i+1 To n

        If IsPrime(a(i))Then

          If  Then       ‘(2)

            k=j

            flag=True

           End If

       End If

    Next j

    If k<>i Then

      t=a(k)：a(k)=a(i)：a(i)=t

    End If

    If Not flag Then Exit For     ‘Exit For表示退出循环

  Next i

  ‘依次输出排序后的数据。代码略

End Sub

Function IsPrime(m As Integer)As Boolean

‘本函数判断m是否是素数：是素数返问值为True，不是素数返回值为False

    ‘代码略

End Function

实现上述功能的VB程序如下，但加框处代码有错，请改正。

Const n=10

Dim a(1 To n) As Integer

Private Sub Command1_Click()

Dim i As Integer,j As Integer

Dim temp As Integer,flag As Boolean

'读取一组正整数，存储在数组a中，代码略

i=1:j=n

temp=a(j):flag=True

Do While i<j

If flag Then

If a(i) Mod 2=0 Then

   a(j)=a(i)

   j=j-1

   flag=Not flag

Else

    '{#blank#}1{#/blank#}

End If

Else

If a(j) Mod 2=1 Then

   a(i)=a(j)

   flag=Not flag

Else

   j=j-1

End If

End If

Loop

 ' {#blank#}2{#/blank#}

'依次输出排序后的数据，代码略。

End Sub

p=l：q=10.

Do While p<q

  iMin=p：iMax=p

  For i=p+1 To q

    If a（i）< a（iMin）Then iMin =i

    If a（i）> a（iMax）Then iMax = i

  Next i

  t = a（iMin）：a（iMin）= a（p）：a（p）= t

  t = a（iMax）：a（iMax）= a（q）：a（q）= t

  p = p + 1

  q=q-1

Loop

要使程序实现上述算法思想,则方框中的语句是（  ）

a=[27,5,25,36,78]

f=[False]*5

i=0

while i<4 and not f[i]:

    for j in range(4, i, -1):

        if a[j]<a[j-1]:

            a[j], a[j-1]=a[j-1], a[j]

            f[i]=True

    i+=1

执行该程序段后，数组f中值为True的元素个数是（   ）