9. 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（B）

(E) with a history of high blood pressure running in their family

对答案B我有两个疑问：

1，whose 前面不需要一个and 么？

2，with higher-than-average blood pressure 这个介词短语可以和whose families have a history of high blood pressure这个定语从句并列修饰young people 么？

盼指点，谢谢！

1. with ... blood pressure 是介词短语修饰people, 而 pressure 不能 whose, 所以 whose 直接修饰 people,

不需要 and 呀。

2. 可以的。

豁然开朗，谢谢

这里用whose很明显限定了修饰的对象是个人啊。

我也发现了，谢谢