语法与词汇 More families consist of one parent households or two working parents; _____, children are likely tohave less supervision at home than was common in the traditional family structure. This lack of parentalsupervision is thought to be an influence on juvenile crime rates.无
【正确答案】 B
【答案解析】空前“更多的家庭是单亲家庭或双工家庭” 与空后“孩子在家很少受到监管” 之间是因果关系, 因此B项正确。simultaneously同时地。