单选题 As welfare reform has ______ millions of single mothers like Patino into the workforce since 1996, questions about its effects on families have loomed large.
A. nudged B. propelled C. divested D. bumped

【正确答案】 B

【答案解析】[解析] nudge“轻触，轻推”；propel“推进，驱使”；divest“剥夺”；bump“碰(伤)，撞(破)，颠簸”。