题目

请写出一个只含有想x，y两个字母的三次四项式． 答案：【1】x3+xy+y+1（答案不唯一）7.  (2015 江办江阴阶段性考试，29) I don't know how long they.I remember he his wife on a sunny day.   A. married;got married to    B.  married; got married with   A. have been married;got married with    D. have been married;married