Khan Academy 的SAT辅导大家评价如何？
by victor19 US New York 发表日期： Tue 27 September 2016 4:29 pm
by victor19 US New York 评论日期： Tue 27 September 2016 10:09 pm " 便宜没好货？"
by cjj1998 US nj 评论日期： Tue 27 September 2016 10:55 pm " KA SAT prep is funded by Bill Gates. Bill Gates is pocketing mega-taxpayer dollars from his investments in the statewide Common Core testing industry and the Common Core computerization of schools. So in the end, KA is not free but funded by your tax dollars. "