Dim a(1 To 15) As Integer

Private Sub Form_Load()

  Dim i As Integer, t As Integer

  Dim s1 As String, s2 As String

  Randomize

  s1 = ""

  For i = 1 To 15

    a(i) =  ①    

    s1 = s1 + Str(a(i))

  Next i

  Text1.Text = s1

End Sub

Private Sub Com1_Click()

  s2 = ""

  For i = 1 To 15

    s2 =  ②    

  Next i

  Text2.Text = s2

End Sub

Private Sub Command1_Click()

    Dim As Single, b As Single, c As Single, p As Single, s As Single

    a≡Val(Text1. Text)

    b=Val(Text2. Text)

    c=Val(Text3. Text)

    p=(a+b+c)/2

    If a＜=p Or b＞=p Or c＞=p Then

        Label1. Caption="不能构成三角形"

    Else

        s=Sqr(p*(p-a)*(p-b)*(p-c))*p

        Label1. Caption="面积为"& s

    End If

End Sub

Dim a(1To 5)As Integer

i=1:n=5

Randomize

For i=1 To n

    x=Int(Rnd*10)*2+1

    If(x Mod 10+x\10)Mod 2=0 Then

        a(i)=x

    Else

        a(n-i+1)=x

    End If

Next i

数组元素的初值均为0，执行该程序段后，a（1）至a（5）的值可能的是（    ）