【www.junered.com--缤纷英语】
If ever there was living proof that marathon running keeps you fit Jenny Wood Allen from Dundee is it. 31 She was 71 and she didn"t even have proper training shoes them At first she could only run to the end of her avenue, which is about three quarters ofa mile. Shehad problems getting back and had to either take a bus or ask somebody for a lift. Withina couple of months, however, she was managing two or three miles.32～When it comes to marathon running, however, the experts are divided. One of them,Professor Craig Sharp says that if you are reasonably fit you can probably run for two hours at a medium pace and feel OK. At this point your muscles run out of glycogen（糖原）---the best source of energy we have. This means you start using fat for energy, and your body has to work harder to tranorm fat into energy. This happens at a time when you are starting to feel exhausted. And it can hurt your heart in the long run. 33 Other specialists have a very different opinion. Dr. Percy Brown believes that if you train reasonably and prepare several months in advance, it could even help you live longer. He argues that
after 16-20 miles, you have to slow down and running gets really hard. 34 Atter a quick top up of water and a rest, most go home and make a full recovery. Only l in l,000 actually makes it to hospital.Another problem may be post-race exhaustion. Surveys show most runners are much more likely to catch colds or develop chest infections in the week afier runningarace.__35There"s no evidence of lasting disease or an increased risk of illness.
A. In spite of this, marathon running is bad for your health.
B. He believes that the only problem you may have when running a marathon is exhaustion or a small injury caused by falling or tripping over things.
C.Scientifically speaking, human beings are perfectly designed forjumping and running and walking long distances.
D. Nowadays marathon is an increasingly popular sport in the world.
E.But this weakening effect on the system is temporary.
F.She started by running to the shops, wearinga thickjacket,and carrying her shopping bag.
G All this is proof-he believes---that the body isn"t designed for long-distance running.
DCA
以上就是这篇文章If ever there was living proof that marathon running keeps阅读理解答案的全部内容。
查看更多缤纷英语相关内容,请点击缤纷英语