A.SELECT*FROM职工; WHERE年龄>(SELECT年龄FROM职工; WHERE姓名=“刘勋”)
B.SELECT*FROM职工; WHERE姓名=“刘勋”
C.SELECT*FROM 职工; WHERE年龄>(SELECT年龄; WHERE姓名=“刘勋”)
D.SELECT*FROM职工; WHERE年龄>“刘勋”