Day60 1. [Assumption] C
only 5.5% of Ac grant the majority of their degrees in the liberal arts. ---> decline of academic rigor
C 建立 liberal arts和 academic rigor的联系 2. [Assumption] D
玩游戏的青少年-->病 ; prohibits the sale of video games to minors --> decrease wrist condition
D 取反,如果家长帮忙买,政策无效