单选题 A new study found that inner-city kids living in neighborhoods with more green space gained about 13% less weight over a two-year period than kids living amid more concrete and fewer trees. Such【C1】______tell a powerful story. The obesity epidemic began in the 1980s, and many people【C2】______it to increased portion sizes and inactivity, but that can't be everything. Fast foods and TVs have been with us for a long time. "Most experts agree that the changes were【C3】______to something in the environment," says social epidemiologist Thomas Glass of The Johns Hopkins Bloomberg School of Public Health. That something could be a【C4】______of the green. The new research,【C5】______in the American Journal of Preventive Medicine, isn't the first to associate greenery with better health, but it does get us closer【C6】______identifying what works and why. At its most straightforward, a green neighborhood【C7】______means more places for kids to play—which is【C8】______since time spent outdoors is one of the strongest correlates of children's activity levels. But green space is good for the mind【C9】______: research by environmental psychologists has shown that it has cognitive【C10】______for children with attention-deficit disorder. In one study, just reading【C11】______in a green setting improved kids' symptoms. 【C12】______to grassy areas has also been linked to【C13】______stress and a lower body mass index among adults. And an【C14】______of 3,000 Tokyo residents associated walkable green spaces with greater long life among senior citizens. Glass cautions that most studies don't【C15】______prove a causal link between greenness and health, but they're nonetheless helping spur action. In September the U.S. House of Representatives【C16】______the delightfully named No Child Left Inside Act to encourage public initiatives【C17】______exposing kids to the outdoors. Finding green space is not【C18】______easy, and you may have to work a bit to get your family a little grass and trees. If you live in a suburb or a city with good parks,【C19】______what's there. Your children in particular will love it—and their bodies and minds will be【C20】______to you.

【正确答案】 A

【答案解析】解析：动词辨析题。此处填入的词与were构成that从句的谓语，说明changes与something in the environment之间的关系。文章首句便指出“比起那些生活在周围是钢筋混凝土、少有绿色环境的孩子，住在周围充满绿色植物的孩子在2年内体重会少增长13%”，由此可知，这些变化是与环境中的某些东西有关，A项related填入句中构成短语be related to“与……有关”，符合语境。