60. Studies show that young people with higher-than-average blood pressure and their families have a history of high blood pressure are more likely than others to develop a severe form of the condition. ???
(A) and their families have a history of high blood pressure (B) whose families have a history of high blood pressure (C) and a history of high blood pressure runs in the family (D) whose families have a history of high blood pressure running in them (E) with a history of high blood pressure running in their family 答案为B,我选A 觉得两个修饰成分用and连接更为合理