问答题 It is reported that Facebook could be a key in mapping which geographical areas have the most overweight and obese people. Researchers have found that the higher the percentage of people in a city or town with Facebook "interests" suggesting a healthy lifestyle, the lower that area’s obesity rate. At the same time, areas with a large percentage of Facebook users with television-related "interests" tend to have higher rates of obesity.

【正确答案】significant relationship

【答案解析】文章第一段指出，据报道，脸书可能是绘制哪些地区超重和肥胖人数最多的关键。研究人员发现，在一个城市或城镇中，对脸书“感兴趣”的人中表示对健康生活方式感兴趣的比例越高，该地区的肥胖率就越低。与此同时，那些对电视相关感兴趣的脸书用户比例较高的地区，肥胖率也更高。由此可知，超重和肥胖人数的官方数字与该地区脸书用户注册的休闲兴趣类型之间存在重大关系。故空格处应填significant relationship。