单项选择题
A.MODIFY FORM B.EDIT FORM C.OPEN FORM D.READ FORM
A.Count B.Page C.Num D.PageCount
A.ALTER TABLE student ADD平均分数F(6,2) B.ALTER DBF student ADD平均分数F6,2 C.CHANGE TABLE student ADD平均分数F(6,2) D.CHANGE TABLE student INSERT平均分数6,2