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  3. Most Adults in U. S. Have Low Risk of Heart Disease More than 80 percent of U. S. adults have a less than 10-percent risk of

Most Adults in U. S. Have Low Risk of Heart Disease More than 80 percent of U. S. adults have a less than 10-percent risk of

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问题                 Most Adults in U. S. Have Low Risk of Heart Disease
    More than 80 percent of U. S. adults have a less than 10-percent risk of developing heart disease in the next 10 years, according to a report in the Journal of the American College of Cardiology(心脏病学). Just 3 percent have a risk that exceeds 20 percent.
    " I hope that these numbers will give physicians, researchers, health policy analysts, and others a better idea of how coronary(心脏冠状动脉的)heart disease is distributed in the U. S. population," lead(带头的)author Dr. Earl S. Ford, from the Centers for Disease Control and Prevention in Atlanta, said in a statement.
    The findings are based on analysis of data from 13 ,769 subjects, between 20 and 79 years of age, who participated in the Third National Health and Nutrition(营养的供给)Examination Survey from 1988 to 1994.
    Overall, 82 percent of adults had a risk of less than 10 percent, 15 percent had a risk that fell between 10 to 20 percent and 3 percent had a risk above 20 percent.
    The proportion of subjects in the highest risk group increased with advancing age, and men were more likely than women to be in this group. By contrast, race or ethnicity(种族划分)had little effect on risk distributions.
    Although the report suggests that most adults have a low 10 -year risk of heart disease, a large proportion have a high or immediate risk, Dr. Daniel S. Berman, from Cedars-Sinai Medical Center in Los Angeles, and Dr. Nathan D. Wong, from the University of California at Irvine, note in a related editorial.
    Aggressive treatment measures and public health strategies are needed to shift the overall population risk downward, they add.
According to the Journal of the American College of Cardiology, ______of the U. S. adults had a risk of developing heart disease above 20 percent in the next 10 years.
选项 A、three percent
B、ten percent
C、twenty percent
D、eighty-two percent
答案A
解析 由第四段“Overall，82 percent of adults had a risk of less than 10 percent，15 percenthad a risk that fell between 10 to 20 percent and 3 percent had a risk above 20 percent．”可知，美国80％以上的成年人未来十年内患心脏病的风险低于10％，15％的成年人未来患心脏病的风险介于10％～20％，3％的成年人患心脏病的风险在20％以上.故选A。
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