[解析]
(1)推理判断题。根据Who Can Participate in the Elite Program部分的Harvard's Elite Program is designed for mature,academically motivated students who are interested in exploring a potential major or simply finding out what college is really like(哈佛大学的精英计划是为那些有兴趣探索潜在专业或只是了解大学真实情况的成熟、有学术动机的学生设计的),可知可以成为2024年精英计划的申请人是:杰瑞,16岁,预计2025年进入大学,故选B。
(2)细节理解题。根据Important Deadlines部分的Early Application and Priority Financial Aid Deadline﹣January 10,2024(提前申请和优先资助截止日期:2024年1月10日),可知在2024年1月9日可以申请优先资助,故选C。
(3)文章出处题。通读全文,特别是根据第一段的Harvard's Elite Program for high school students is an intensive two﹣week summer program designed to give you a glimpse of college life(哈佛大学针对高中生的精英计划是一项为期两周的强化暑期计划,旨在让你一窥大学生活)和最后一段See the Elite Program Calendar for all important dates and deadlines(有关所有重要日期和截止日期,请参阅精英计划日历),可知这段文字最有可能来自一个大学网站,故选D。