1. (2017高二上·宁波期中) 某同学编写了如下VB程序段，运行后弹出下面的错误信息。则错误时所执行的语句是（  ）

Private Sub Command1_Click( )

Dim x As String, k As String, j As Integer

x = "XiaoWei"                    ①

k = "语文"                       ②

j = 90                           ③

Text1.Text = x + k +j               ④

End Sub