1. You can answer by discussing the diversity of age groups living in the city. 2. You can mention factors that contribute to this diversity, such as educational institutions, job opportunities, or retirement communities.

1. 你可以通过讨论生活在城市中的不同年龄组的多样性来回答。 2. 你可以提到促成这种多样性的因素，例如教育机构、就业机会或退休社区。