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  3. Americans have longer, but not necessarily healthier lives due to high rates of preventable chronic disease, according to an ann

Americans have longer, but not necessarily healthier lives due to high rates of preventable chronic disease, according to an ann

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问题     Americans have longer, but not necessarily healthier lives due to high rates of preventable chronic disease, according to an annual report on the nation’s health released on Tuesday.
    Gains in life expectancy【C1】______with Americans’ unhealthy behaviors,【C2】______have led to a 28 percent adult obesity rate, a diabetes rate of【C3】______10 percent and a high blood pressure rate of more than 30 percent,【C4】______to United Health Foundation’s 2012 America’s Health Rankings. All three conditions are【C5】______risk factors for cardiovascular disease.
    Since 1990, premature deaths have【C6】______by 18 percent, cardiovascular deaths have fallen 35 percent, and cancer deaths have slipped by 8 percent, the report said. Americans’ life expectancy was 78. 5 years in 2009, 1.7 years【C7】______the level in 2000, the report said. "As a【C8】______, we’ve made extraordinary gains in longevity over the【C9】______decades, but as individuals we are regressing in our health," said Dr. Reed Tuckson, a【C10】______adviser at the United Health Foundation and chief of medical【C11】______at the United Health Group.
    Among the 24 different metrics involved in【C12】______the nation’s health are a variety of【C13】______such as smoking, violent crime and a lack of health insurance.
    The report, now in its 23rd year,【C14】______data from the Centers for Disease Control and the US Census Bureau as【C15】______as the FBI, among other sources. Vermont was【C16】______to be the healthiest US state thanks in part to a low incidence of【C17】______diseases, a low violent crime rate and a high rate of health insurance【C18】______its residents. Mississippi and Louisiana were the unhealthiest states because of a high【C19】______of obesity, diabetes and a low birth weight among【C20】______, among other factors.
【C18】
选项 A、at
B、under
C、about
D、among
答案D
解析 介词辨析题。此处的意思是“居民的犯罪率低，健康保险投保率高”，四个选项中，只有among说得通，其意思为“在……之中”，故答案为D)。
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