题目解析:
题干提问“印刷品爆发式增长之后,以下哪个是不符合阅读发生的变化”。
定位第2段倒数第1句,reading became an increasingly common form of diversion as well as devotion对应选项A,正确;
倒数第2句reading became more varied对应选项C,正确;
倒数第2句they soon passed on or discarded对应选项D,正确;
倒数第3句readers scanned newspapers, magazines, and cheap books对应选项B,原文是scan浏览,即并非仔细阅读,与选项B提及more carefully不符,错误。
故选B