每个数控加工程序的格式不可能相同，但一个完整的程序必须具备程序段和结束段。
参考答案：对
— When did you see Jane?
— Last Saturday. She ______ with her sister, Lily. [ ]
A. was doing window shopping
B. did some window shopping
C. is doing window shopping
D. had done window shopping
下列各项，不应计入交易性金融资产成本的有( )。
A．股票的买入价
B．支付的印花税
C．支付的手续费
D．已宣告但尚未领取的现金股利
