单项选择题
A.ControlsB.ControllerC.ContainsD.Control
A.HTML.ActionLink（“txt”）B.HTML.TextBox（“txt”）C.HTML.TextArea（“txt”）D.HTML.ListBox（“txt”）
A.ExecuteNonQueryB.ExecuteReaderC.ExecuteScalarD.CaExecuteXmlReaderche