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)（B）
(E) with a history of high blood pressure running in their family
为什么E不好？
怎么能连用2个with 介词短语来修饰people呢？其间既没有 "，" 也没有and.
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