子过程Plus完成对当前库中"教师表"的年龄字段都加1的操作。 Sub Plus( ) Dim cn As New ADODB.Connection Dim rs As New ADODB.Recordset Dim fd As ADODB.Field Dim strConnect As String Dim strSQL As String Set cn=CurrentProject.Connection strSQL = "Select 年龄 from 教师表" rs.Open strSQL, cn, adOpenDynamic, adLockOptimistic, adCmdText Set fd = rs.Fields("年龄") Do While Not rs.EOF fd = fd +1 rs.Update 【 】 Loop rs.Close cn.Close Set rs = Nothing Set cn = Nothing End Sub 程序空白处应该填写的语句是( )。 A. rs.MoveNext B. rs.MovePrevious C. rs.MoveFirst D. rs.MoveLast