专题限时训练(三十) [科普知识型阅读理解(二)]
(限时：25分钟)
(一)
two new studies show that children who live close to parks and markets that sell fresh food are half as likely to be obese as children who live far from these places.obese people are extremely overweight, and those extra pounds are tied to an increase in a person's risk for many different diseases and serious medical conditions, including diabetes, heart disease and cancer.
the research reveals “the influence of environmental factors on people's health, in particular obesity，” laura kettel khan, a nutritionist at the centers for disease control and prevention in atlanta, told science news.
lawrence frank, an urban planner and public health researcher资源难易程度:★★★★★★★★★★★★★★★
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