已知x=2007,y=2008,则x2+2xy+y25x2-4xy÷x+y5x- 发布时间:2017-04-24 12:45 │ 来源:www.tikuol.com 题型:填空题 问题: 已知x=2007,y=2008,则x2+2xy+y25x2-4xy÷x+y5x-4y+x2-yx=______.
题型:填空题 He was asked to speak louder()all the students in the classroom could hear him.A.asB.so as toC.so thatD.than 查看答案