单项选择题 Which of the following isn’t mentioned in the three advertisements?A.MarriagE.B.Male or femalE.C.EducationD.Working experiencE.

多项选择题 归一化的一阶差分链码具有 A. 平移不变性 B. 旋转不变性 C. 中心距不变性 D. 傅里叶描述子不变性

单项选择题 一Would you like to go to the cinema with us tonight? 一________，but I don’t think I can afford the timE.A.I'd like toB.I'd better goC.I didn’t want toD.I wouldn’t