$学而思(XRS)$北京奥数政策的影响将在下一个季度开始体现，下调了2013财年全年的营收预期。上个季度季报对2013财年的营收预期：US$230.8 million to US$239.7 million, representing an increase of 30% to 35% year-over-year；这个季度的预期是US$227.2 million to US$232.6 million, 增速 28% t...