你会在隆重的婚礼上跳舞吗?我们中的大多数老年人不够健康,更不能在90岁后跳“摇摆舞”。因为他们是年老虚弱的、痴呆的,或者两者兼而有之。但是有些高龄老人不仅在跳舞,还在做饭、开车、做志愿者工作。对此,科学家着眼于人口老龄化课题的研究,正试图找出原因。一、全球老龄化问题科学家正在研究“超时代长寿人”——90岁的 Will you dance at a grand wedding? Most of us are not healthy enough to jump “swing” after 90. Because they are old and weak, dementia, or both. But some elderly people are not only dancing, they are still cooking, driving and doing volunteer work. In response, scientists focus on the issue of population aging research, is trying to find out why. First, the global aging problem Scientists are studying “age-long longevity ” - 90-year-old