【题目】The number of stay-at-home fathers reached a record high last year, new figures show, _______ families saw a rise in female breadwinners.
A.if
B.as
C.because
D.though

【答案】B
【解析】考查连词辨析。句意：最新数据显示，随着养家的女性增多，去年居家父亲的数量又创新高。此处是as引导时间状语从句，表伴随，故选B。