【科学60秒】关节炎——马拉松选手不能承受之痛_英语听力练习mp3下载-科学-沪江听力酷

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【科学60秒】关节炎——马拉松选手不能承受之痛

听力简介：

只有5个空，最后两个词是一样的，只听写一次即可。
For some reason, every year a few dozen runners ____1____ from southern Italy all the way to the North Cape of Norway, in what’s called the TransEurope-FootRace. It takes about two months to cover the almost 2,800 miles, about 45 miles a day.
In the 2009 ____2____, 44 of the 66 participants allowed themselves to be examined medically throughout. The findings were presented November 29th at ____3____ of the Radiological Society of North America in Chicago. And some of the discoveries may be of use to the less ambitious among us.
Muscle ____4____ of the legs actually went down 7 percent because of the incredible energy consumption of the daily distances. And some leg injuries were found to be safe to run through. It was okay to keep going with simple leg muscle ____5____, for example. But other overuse injuries, like joint ____5____, carried a greater risk of worsening. Runners lost 40 percent of their body fat in the first half of the race and 50 percent altogether. Beginning runners can likewise expect to see a rapid fat loss at first. And you get to stop before reaching Norway.
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