全书将内容分为五个部分： 1. GRE高频必考词 这部分词汇按照在历年GRE真题中出现的频率由高到低排序（出现次数相同的词汇排序不分先后）。 2. GRE 高频拓展词 在GRE真题中，出现了大量的形近词、派生词等拓展词，这些单词在书写形式上看起来有相似之处，但是在词义上却相差十万八千里，容易给考生造成混乱。因此，建议把这些单词放在一起记忆，效率可能更高。 3. GRE高频复合词 在GRE真题中，经常会出现由两个或两个以上的简单词组合而成的词，这些简单词大家或许都认识，但是一旦组合成一个复合词，词义就不同了。本书把这些 GRE高频复合词放到一起，目的就是让大家更科学地、更高效地记住这些单词。 4. GRE常考僻义的熟词 在GRE真题中，会经常考查一些“熟悉”词汇的“生僻”词义，这些词汇乍一看大家感觉都认识，但是事实上，它们所考查的词义

In this book， we list and introduce some interesting， important or useful mathematics books. Most selected books were published during the twentieth century. For the convenience of the reader， we have arranged books according to topics. Besides some introductions and comments， we also quote from informative reviews of these books from sources including MathSciNet， Zentralblatt Math and the Bulletin of the American Mathematica Society. A common way for people to pick out books to read is to follow recommendations of either book reviews or experts. The list of books is probably the most interesting part of this book， Once the titles or authors' names are known， it is relatively easy to find valuable information and reviews about the book from many different sources （but it might take some efforts to find good books on subjects outside one's expertise.） In spite of this， we hope that additional information provided here about these books might be helpful and convenient.