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  3. Running may be the single most effective exercise to increase life expectancy, according to a new review and analysis of past re

Running may be the single most effective exercise to increase life expectancy, according to a new review and analysis of past re

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问题     Running may be the single most effective exercise to increase life expectancy, according to a new review and analysis of past research about exercise and premature death. The new study found that, compared to non-runners, runners tended to live about three additional years, even if they run slowly or sporadically and smoke, drink or are overweight. No other form of exercise that researchers looked at showed comparable impacts on life span.
    The findings come as a follow-up to a study done three years ago, in which a group of distinguished exercise scientists scrutinized data from a large trove of medical and fitness tests conducted at the Cooper Institute in Dallas. That analysis found that as little as five minutes of daily running was associated with prolonged life spans.
    After that study was released, the researchers were inundated with queries from fellow scientists and the general public, says Duck-chul Lee, a professor of kinesiology at Iowa State University and co-author of the study. Some people asked if other activities, such as walking, were likely to be as beneficial as running for reducing mortality risks.
    High-mileage runners wondered if they could be doing too much, and if at some undefined number of miles or hours, running might become counterproductive and even contribute to premature mortality.
    And a few people questioned whether running really added materially to people’ s life spans. Could it be, they asked rather peevishly, that if in order to reduce your risk of dying by a year, you had to spend the equivalent of a year’s worth of time on the trails or track, producing no discernible net gain?
    So for the new study, which was published in March in Progress in Cardiovascular Disease, Lee and his colleagues set out to address those and related issues by reanalyzing data from the Cooper Institute and also examining results from a number of other large-scale recent studies looking into the associations between exercise and mortality.
    Over all, this new review reinforced the findings of the earlier research, the scientists determined. Cumulatively, the data indicated that running, whatever someone’s pace or mileage, dropped a person’s risk of premature death by almost 40%, a benefit that held true even when the researchers controlled for smoking, drinking and a history of health problems such as hypertension or obesity.
According to the passage, the new review indicated that________.
选项 A、findings of the earlier research were wrong
B、running could not necessarily lower a person’ s risk of premature death
C、running was beneficial to people’ s health
D、people with smoking, drinking and other health problems are not mentioned
答案C
解析 细节题。根据题干关键词定位到文章最后一段。分析该段可知，科学证实先前对于每天跑步的研究发现是正确的，跑步可以降低人们过早死亡的风险，剔除吸烟、饮酒以及其他健康问题，每天跑步是有益处的。因此，A、B、D三项均错误。而且，文章最后一段是在说明跑步的好处。故本题选C。
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