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The WHO says that 80% of the world’s teens don’t get enough exercise to live healthy lives. The report was based on research done with students aged 11 to 17 in 146 different countries. 1. It’s a pity that not much has changed since then, as the WHO reports.

Doctors say 60 minutes of exercise daily is needed for teens to build up their bone and muscle strength. It’s also hugely important for the health of the heart and lungs. 2. Besides, more and more research is showing that exercise doesn’t just help the body, but also the brain, improving thinking, test scores, and school grades.

3. They were also very different between boys and girls. In the US, for example, 64% of boys were not active enough, compared to 80% of girls. South Korea was the country with the lowest activity levels — 91% of the boys and 97% of the girls didn’t get enough exercise.

One big reason for the lack of activity in today’s teens is technology, such as smartphones, computers and TVs. Many teens find it hard to pull themselves away from them. 4.

So the WHO warns that teens need to do less playing in the digital world, and more playing in the real world. Teens should take part in sports, whether on official teams or just playing around on the playground. 5. For many people, walking or biking to school is one way to make that happen. It’s very important for young people to build these habits now, because the positive effects of those habits can carry through into adult life.

A.Exercise benefits you academically.

B.Activity levels vary from country to country.

C.The WHO has spared no effort in the research.

D.Such inactivity can severely affect their growth.

E.Exercise can also be built into a normal day’s activities.

F.Regular activity can help them control their weight, too.

G.The WHO has been studying teen activity levels since 2001.

高二英语七选五中等难度题

少年,再来一题如何?
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