采矿方法就是研究矿块的开采方法,它包括()、()和()三项工作。 发布时间:2017-10-29 06:57 │ 来源:www.tikuol.com 题型:填空题 问题: 采矿方法就是研究矿块的开采方法,它包括()、()和()三项工作。
题型:填空题 Kitty ____ London and she is talking about her trip at home now.A. has been B. has gone C. has gone to D. has been to 查看答案