第29题: [单项选择]The idea was just beginning to ______ in America and we knew that it was going to become the way that retailing companies were run. A. show up B. catch on C. open out D. get by 参考答案:B 答案解析:[解析] catch on的意思为“受欢迎,变得风行起来,开始为大家所接受”,在此,符合句意。再如:The idea of classes being a fashion item has been