1. (2020·杭州模拟) 运行下列程序

Dim a(1 To 5) As Integer

  a(1) = 1

  For i = 2 To 5

    a(i) = Int(Rnd * 5) + 1

    If a(i) Mod 2 = 0 Then

      a(i) = a(i) + i

    Else

      a(i) = a(i) + a(i - 1)

    End If

 Next i

a(1)~a(5)的值不可能的是：（  ）