[解析]
(1)B.细节理解题.根据第一段最后一 句Researchers from Brigham Young University discovered that fathers are in a unique position to help their adolescent children learn persistence. (杨百翰大学的研究人员发现,父亲在帮助青春期的孩子学习毅力方面具有独特的地位)可知,杨百翰大学研究的特别之处在于,它关注的是父亲在养育子女中的角色.故选B.
(2)C.推理判断题.根据第四段中Rather ,an authoritative parenting style indudes some of the following characteristics:children feel warmth and love from their father;responsibility and the reasons behind rules are stressed children are given an appropriate level of autonomy. (相反,权威的养育方式包括以下一些特征:孩子们感受到来自父亲的温暖和爱;强调责任和规则背后的原因;孩子们被给予适当的自主权)可知,一个有权威的父亲在抚养孩子时会向他们解释规则.故选C.
(3)B.细节理解题.根据最后一段最后一 句Yet the researchers suggest that single parents still may play a role in teaching the benefts of persistence ,which is an avenue of future research. (然而,研究人员认为,单亲父母仍然可能在教授坚持不懈的好处方面发挥作用,这是未来研究的一个方向)可知,根据研究人员的说法,单亲父母是未来研究的重点.故选B.
(4)D.标题判断题.根据文章倒数第二段中A key finding is that over time ,children raised by an authoritative father were significantly more likely to develop persistence ,which leads to better outcomes in school. (一项重要的发现是 ,随着时间的推移,由权威父亲抚养长大的孩子更有可能培养出坚持不懈的精神,从而在学校取得更好的成绩)和文章主要内容为说明父亲在养育子女中的角色,故选D选项"孩子们倾向于向父亲学习坚持不懈的精神"最符合文章标题.故选D.