A:@Chloe：非常破坏Chinese reputation
@Jack：理论上讲，EA录取了又放鸽子的，如果被学校知道了会被除名的; duke通知对方学校
https://www.usnews.com/education/best-colleges/articles/2016-10-24/what-happens-to-students-who-back-out-of-early-decision-offers
“If, for instance, they found out a student somehow had applied to two different places early decision, or even another early action and the student had broken the early decision agreement, Nesbitt says they’d call the other schools and the student would risk losing both acceptances.”