一个30°的角,用放大3倍的放大镜来看,这个角的度数是______. 发布时间:2017-04-15 15:17 │ 来源:www.tikuol.com 题型:填空题 问题: 一个30°的角,用放大3倍的放大镜来看,这个角的度数是______.
题型:填空题 My mother _________ a teacher for ten years. [ ]A. has has B. has been C. have had D. has had 查看答案