__4__.

　　“And the steps to take are simple: don't smoke, maintain a healthy weight, exercise, know your numbers and talk to your physician and control these risks，” she said.

　　African­Americans are at higher­than­average risk for heart disease and stroke; people don't even know they have it, which increases the risk. Medstar Washington Hospital Center is trying to reach this population. __5__. For example, helping the people monitor their blood pressure. If people realize they are at risk for heart disease, they'll make lifestyle changes: lose weight, exercise, eat the right foods and keep in touch with a doctor.

　　A．A healthy lifestyle can prevent heart disease

　　B．So we must cure heart disease

　　C．It is the leading cause of death for women

　　D．With the right training, they can play an important role in community health

　　E．And that changed her life

　　F．Lack of exercise causes heart attacks

　　G．Yet most heart disease is preventable

　　文章大意：医生说大多数心脏病是可以预防的。

　　答案：

　　1．G　根据前面所讲心脏病在全世界范围内越来越严重，最后用Yet most heart disease is preventable表示转折。故G项符合上下文。

　　2．E　根据其后面—句She now exercises daily, and monitors her heart health。故E项解释符合上下文。

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