单项选择题
A.要将formboderstyle属性设置为noneB.要将opacity属性设置为小于100%C.要将locked 属性设置为trueD.要将enabled属性设置为true
A.8，oday，MondayB.7，day，MondayC.7，day，day is MondayD.8，oday，day is Monday
A.properties.csB.form.csC.form.designer.csD.program.cs