OG与LSAT

请教NN心得：

1.仔细研读OG（CR）是不是远比做LSAT重要的多？

Yes.

2.OG（CR部分）对于CR的指导性是不是没有OG（SC部分）对于SC的指导性大？OG关于SC的解释使人有顿开茅塞的感觉，而CR的解释有好多不如自己的解题思路有效呢？

i think it is hard to tell. when i read both of them for first time, i think the key explanation part of SC is better than that of CR, but when i read OG CR  for the fourth time, i changed my original opinion.  Both of them are directive, but they are of different style. Or i'd like to say our chinese cannot easily follow ETS's thread of reasoning at the beginning.

谢谢。