问题：
[答案][D] more Americans are willing to work in reti
答案：
[解析]本题为细节题。根据题干关键词The survey conducted by Harris Poll定位到第二段①句:One in three Americans who are at least 40 have or plan to have a job in retirement to prepare for a longer life。D项中的are willing to work in retirement(愿意在退休后工作)是对原文have or plan to have a job in retirement(已经或计划在退休后获得一份工作)的同义转述,所以本题选D。