在 Excel 工作簿中,执行下列代码后, sheet1 工作表 B8 单元格的值是 ___________ 。 Sub 分段 () For i = 1 To 10 Sheet1.Cells(i, 1) = 8 * i If Sheet1.Cells(i, 1) < 30 Then Sheet1.Cells(i, 2) = Sheet1.Cells(i, 1) + 10 ElseIf Sheet1.Cells(i, 1) < 70 Then Sheet1.Cells(i, 2) = Sheet1.Cells(i, 1) + 20 Else Sheet1.Cells(i, 2) = Sheet1.Cells(i, 1) - 10 End If Next i End Sub