GRE数学考试内容中,一般都假定以下信息为真:

1.All numbers used are real numbers;

2.All figures lie on a plane unless otherwise indicated;

3.All angle measures are positive;

4.All lines shown as straight are straight. On the computer-based test, lines that appear“jagged" can also be assumed to be straight (lines can look somewhat jagged on the computer screen):

5.Figures are intended to provide useful information for answering the questions. However,except where a figure is accompanied by a“Note" stating that the figure is drawn tO scale, solve the problem using your knowledge of mathematics, not by visual measurement or estimation.

细心的读者会发现,上述假设实际上就是ETS 出题原则,即:

1.所有的数都是实数;

2.除非题目中专门指出假设所有图形都在同一个平面内;

3.所有的角的测量值都是正数;

4.所有显示为直线的线均可当作直线来处理(在机试中,因为电脑显示器的原因,直线可能会看起来呈“锯齿状”);

5.伴随问题的图形将为解题提供有用的信息。但是,只有在问题中指出本图形是按比例画出(drawn to scale)时,才可以用目测或估计而得到的信息去解题。否则,只能运用你的数学知识去回答问题。这一解题原则可以简称为“只能读图,不能度量”的原则。

上述是对GRE数学出题规律的简单概述,希望考生们在复习新GRE数学考试的同时,掌握这些GRE数学出题原则,从根本上解决GRE数学难题的考察,再结合GRE考试题型进行联系,希望能够对同学们备考GRE起到帮助作用。

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