[求助] what is the difference between OG 10th and 11th?

celine2007

I am gonna prepare GMAT in Aug. for about 1 1/2 month. I only have a copy of OG 10th on hand. Since I don't have much of study time, is it necessary to go over OG 11th ( OG, verbal review, quantitative review) as well? Could experienced friends tell me what is the difference between them? Thanks in advance!! Look forward to hearing you soon.

celine2007

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lukeleng

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og10的讨论贴更成熟些，不过现在又对照表，也不难查。
CR看OG11更好些，SC方面OG11的解释更有条理。
总之，OG11更好些，如果时间充裕，都看看也无妨。
加油！

wenyuanalive

？？怎么看不到回复