如果某农产品需求完全无弹性,则其需求弹性值()A、等于0; B、等于1; C、无穷大;D 发布时间:2018-02-14 06:11 │ 来源:www.tikuol.com 题型:单项选择题 问题: 如果某农产品需求完全无弹性,则其需求弹性值()A、等于0;B、等于1;C、无穷大;D、介于0和1之间
题型:单项选择题 Recently, much more emphasis has been put _____ developing the students' creativity. [ ]A. onto B. in C. over D. on 查看答案