第二组(建议用时:35分钟)Ⅰ.阅读理解A
(2015·济南3月模拟)If you think that running marathons will help you live a long and healthy life,
exercise at all.
Scientists in Denmark have been studying over 1,000 joggers and nonjoggers for 12 years.The death rates from the sample group indicate that people who jog at a moderate pace two or three times a week for less than two and a half hours in total are least likely to die.The best speed to jog at was found to be about 5 miles per hour.The research suggests that people who jog more than three times a week or at higher speeds of over 7 mph die at the same rate as nonjoggers.The scientists think that this is because strenuous exercise causes structural changes to the heart and arteries(动脉).Over time, this can cause serious injuries.
Peter Schnohr, a researcher in Copenhagen, said, “If your goal is to decrease risk of death and improve life
expectancy, jogging a few times a week at a moderate pace is a good strategy.Anything more is not just unnecessary, and it may be harmful.?The implications of this are that moderate forms of exercise
such as t抋i chi, yoga and brisk walkine g may be better for us than “iron man” events, triathlons and long璬istance running and cycling.According to Jacob
Louis
Marott,
another researcher involved in the study, 揧ou don抰 actually have to do that much to have a good impact on your health.And yogperhaps you shouldn’t actually do too much.”
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