单项选择题
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
A.MyForList B.MyForDisplay C.MyForShow D.MyForShowForm
A.DO PRG temprg B.DOtemprg C.DO CMD temprg D.DO FORM temprg