11.People who get a good workout almost daily can add nearly four years to their life spans,according to the first study to quantify the impact of physical activity this way.
The researchers looked at records of more than 5,000middle-aged and elderly Americans and found that those who had moderate to high levels of activity lived 1.3to 3.7years longer than those who got little exercise,with men and women benefiting about equally.
"This shows that physical activity really does make a difference--not only for how long you live but for how long you live a healthy life,"said Oscar H.Franco of the Erasmus M.C.University Medical Center in Rotterdam."Being more physically active can give you more time."
Previous studies have found that being physically active has a host of health benefits.It reduces the risk of being overweight and of developing many illnesses,improves overall quality of life,and lowers the mortality rate.But the new study is the first to directly calculate the effect on how long people live.
People who engaged in moderate activity--the equivalent of walking for 30minutes a day for five days a week--lived about 1.3to 1.5years longer than those who were less active.Those who took on more intense exercise--the equivalent of running half an hour a day five days every week--extended their lives by about 3.5to 3.7years,the researchers found.
The findings show that even for people who are already middle-aged,exercising more can add years to their lives,Franco said.
Other experts said the study was consistent with the growing evidence that exercising on a regular basis is one of the most important things people can do for their health.
"At the end of the day,this is more evidence that the sedentary lifestyle is the most devastating to health,longevity and chronic disease development,"said James O.Hill of the University of Colorado at Denver.
Hill and others said exercising regularly also enables people to live healthier lives,free from a host of chronic illnesses that can make it hard for people to enjoy their later years.
In addition,recent studies have also found that exercise has payoffs for the mind,too.It has been shown to improve overall well-being and reduce stress and depression.
"The benefits of physical activity extend well beyond the effects on longevity,"said Joann E.Manson of Harvard's Brigham and Women's Hospital in Boston.
67.What would be the best title for this text?A
A.A Daily Workout Add 4Years to Life.
B.How A Daily Workout Is Good to Health.
C.Men Benefit More from A Daily Workout.
D.Middle-aged People Benefit from Workout.
68.In what way is this research different from the previous onesC
A.It finds that men and women benefited about equally.
B.Being physically active has a host of health benefits.
C.It's the first to calculate the effect on how long people live.
D.Being more physically active can give you more time to live.
69.According to the research,we can learn thatB.
A.physical activity can extend the effects on longevity
B.moderate exercise can greatly improve overall health
C.the more physically active,the longer people will live
D.the inactive lifestyle is most devastating to longevity
70.The author tries to convince the readers byB.
A.describing successful cases
B.presenting findings of research
C.offering professional comments
D.explaining a certain phenomenon.
分析 本文属于说明文阅读,作者通过这篇文章向我们介绍了如果人们每天坚持锻炼,可以增加四年的寿命,研究人员通过研究发现适度运动可以提高人们的整体健康水平,因此作者建议我们每天要适度锻炼.
解答 67.A 主旨大意题,通读全文可知本文主要向我们讲述了如果人们每天坚持锻炼,可以增加四年的寿命,故选A.
68.C 推理判断题,根据第四段But the new study is the first to directly calculate the effect on how long people live.可知这项研究与以前的研究不同的是它是第一个之间计算锻炼时间对人类寿命影响的研究,故选C.
69.B 细节理解题,根据第六段The findings show that even for people who are already middle-aged,exercising more can add years to their lives,Franco said.可知适度的运动可以大大提高人们的整体健康,故选B.
70.B 推理判断题,通读全文可知作者在文章中向我们阐述了关于这个研究的结果,用这些研究结果说服读者,故选B.
点评 考查学生的细节理解和推理判断能力.做细节理解题时一定要找到文章中的原句,和题干进行比较,再做出正确选择.在做推理判断题时不要以个人的主观想象代替文章的事实,要根据文章事实进行合乎逻辑的推理判断.