数据定义语言包括（）种形式。
A、CREATE命令
B、ALTER命令
C、DROP命令
D、DELETE命令
参考答案：A, B, C
She has been skating for _____. [ ]
A. three and a half years
B. three and half a year
C. three and a half year
D. three years and half
股权分置改革过程中因非流通股股东向流通股股东支付对多时而发生的股权转让，应按规定缴纳印花税。（）
