24) 使用SQL语句将学生表S中年龄(AGE)大于30岁的记录删除，正确的命令是 (A) DELETE FOR AGE>30 (B) DELETE FROM S WHERE AGE>30 (C) DELETE S FOR AGE>30 (D) DELETE S WHERE AGE>30

28.使用SQL语句向学生表S(SNO,SN,AGE,SEX)中添加一条新记录，字段学号(SNO)、姓名(SN)、性别(SEX)、年龄(AGE)的值分别为0401、王芳、女、18，正确的命令是 (A)APPEND INTO S (SNO,SN,SXE,AGE) valueS (‘0401’,’王芳’,’女’,18) (B)APPEND S valueS (‘0401’,’王芳’,’女’,18) (C)INSERT INTO S (SNO,SN,SEX,AGE) valueS (‘0401’,’王芳’,’女’,18) (D)INSERT S valueS (‘0401’,’王芳’,18,’女’)