今天数学课上，老师讲了单项式乘以多项式，放学后，小华回到家拿出课堂笔记，认真复习老师课上讲的内容，他突然发现一道题；﹣3xy•（4y﹣2x﹣1）=﹣12xy2+6x2y+__________，空格的地

题干

今天数学课上，老师讲了单项式乘以多项式，放学后，小华回到家拿出课堂笔记，认真复习老师课上讲的内容，他突然发现一道题；﹣3xy•（4y﹣2x﹣1）=﹣12xy²+6x²y+__________，空格的地方被钢笔水弄污了，你认为横线上应填写（）

A：3xy

B：﹣3xy

C：﹣1

D：1

上一题下一题 0.0难度选择题更新时间:2012-04-11 04:30:43

A

Volunteers Wanted
Organization	What volunteers call do	Time
Xinghua Primary	Sing songs to the students	On____
School	Help students____after school	On Mondays and Wednesdays
Sunshine Middle	Help read the newspaper or ____for the old people	On Sundays
School	Give out food and drink	On____
If you are interested in any of the jobs，you can call____．