参考答案

【正确答案：B】

A. 给移民带来更大的负担； B. 展示出人类本性更多的邪恶面 ；C. 促进权利与自由的进步；D. 缓解种族与阶级之间的冲突
第三段“...economic stagnation or decline have almost always left society more mean-spirited and less inclusive, and have usually stopped or reversed the advance of rights and freedoms. Anti-immigrant sentiment typically increases, as does conflict between races and classes.（经济的衰退使社会变得更加狭隘，缺乏包容性，造成权利和自由的停滞不前甚至倒退。反移民运动也显著增加，种族和阶级见的斗争也增多了），这些都是人性的邪恶面，故答案选B。