若m2﹣n2=6,且m﹣n=2,则m+n=( ) 发布时间:2017-05-14 00:18 │ 来源:www.tikuol.com 题型:填空题 问题: 若m2﹣n2=6,且m﹣n=2,则m+n=( )
题型:填空题 — What's the matter with Michael? — Well, his parents wouldn't allow him to go to the concert, but he still ______.A. hopes not B. hopes so C. hopes to D. hopes for 查看答案