题目

有位同学用如下图所示的装置来探究光的反射规律，竖直纸板可沿虚线折叠。    答案：等于  不能   左边  解析:略 —_______is it from your school to your home?— It's about_______ from our school to my home.A.How long; twenty minutes' walkB. How far; twenty minutes’ walkC. How far;twenty-minute-walk D. How long;twenty-minute-walk