市人民政府对旧街小巷进行了改造,使整个城市的面貌焕然一新,如图所示的是人行道上铺 发布时间:2017-07-20 01:06 │ 来源:www.tikuol.com 题型:填空题 问题: 市人民政府对旧街小巷进行了改造,使整个城市的面貌焕然一新,如图所示的是人行道上铺设的凹凸刻纹的防滑地板砖,这种地板砖是通过______来______摩擦力.
题型:填空题 He kept smiling secretly and we were all wondering that made him so happy.A.how it didB.what he didC.how it wasD.what it was 查看答案