大家好，我前两天问了GMAC的工作人员，他们给了我如下回复，请大家参考。
Dear Guang,
The 12th Edition should currently be available on amazon.com. It will be
available on our site within the next two weeks. As you will see below, the
new book has the same format as the 11th Edition. The format of the GMAT
exam has not changed, nor will it be in the near future.
All books available on mba.com contain questions that are actual retired
GMAT? exam questions. The new 12th Edition debuts 300 new questions with
answer explanations not seen in any of our other study materials.
There is no overlap between questions found in the Official Guide for
GMAT? Review 12th Edition, Official Guide for GMAT? Quantitative Review, and
Official Guide for GMAT? Verbal Review. There are questions in the 11th
edition that are also in the 12th Edition, but many of the questions that
overlap now have easier-to-understand answer explanations.
The same things that make the 11th Edition such a great study guide are
still included in the 12th Edition:
? 100 question diagnostic test with answers and thorough explanations
? More than 800 practice questions in order of difficulty
? Comprehensive math and grammar reviews
? Top ten myth busters about the GMAT exam
? Tips to prepare for the GMAT exam
To order the Official Guide for GMAT? Review 12th Edition, Official Guide
for GMAT? Verbal Review, or Official Guide for GMAT? Quantitative Review,
visit www.mba.com/mba/Store.
Look for new Verbal and Quantitative Review Guides in September 2009.
Thank you for your inquiry and interest in GMAT test prep products.
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