新视野大学英语4 Unit1-Unit5 Section A课后练习Unit 1crumble 崩溃，瓦解，消失discern 看出，觉察出，辨明Surpass 超过，胜过shrewd 精明的，机敏的，准确的conversion 转变，改造，转换distort 歪曲，曲解radiant 容光焕发的，喜悦的ingenious 有独创性的，别出心裁的stump 使困惑，难倒proposition 提议，建议，主张1. As the gender barriers (crumbled), the number of women working as lawyers, doctors, or bankers began to increase significantly from the mid-20th century. 2. With the data collected each year, the owner of the shop can (discern)
