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GRE數學考試考點回顧

來源:      瀏覽:      發布日期:2021-06-02 13:39

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2021年從1月到5月,GRE大陸地區一共進行了15場左右考試(不算在家考)。從各路GRE回憶渠道來看。無論verbal reasoning還是quantitative reasoning都覆蓋了很多機經原題,這說明考生刷機經題目是很有必要的。

GRE數學考試考點回顧.jpeg

就數學單科而言,很多考生反饋考試的難度有所上升。我為此去看了一下從1月到5月的回憶考題,得出的結論是:考試的內容沒有大變化,但是題目長度在增加。比如下面的這類題目:

1.During archery practice, Kyle made 50 attempts to hit a target. After each attempt, his success rate was calculated as the number of successful attempts to hit the target as a percent of the number of attempts up to that time. After the 20th attempt, his success rate was45 percent. After the4 40th attempt,his success rate was 55 percent. Which of the following statements must be true? Indicate all such statements.

A. Kyle's success rate was less than 45 percent at least once during the practice.

B. Kyle's success rate was between 48 percent and 52 percent at least once during the practice.

C. Kyle's success rate was greater than 55 percent at least once during the practice.

2. The 1, 200 seniors at a certain college, one-quarter live on campus and the rest live off campus. Three-quarters of the seniors at college own car. Which of the following statements must be true?

A. No seniors live on campus and own a car.

B. At least 300 seniors live on campus and own a car.

C. At most 600 seniors live off campus and own a car.

D. At least 600 seniors live off campus and own a car.

E. At least 300 seniors live off campus and do not own a car.

針對這種題目很長的數學考題,一方面建議考生在平時的練習中就要多刷一些長題目,可以做翻譯練習(英語題目翻譯成中文,再翻譯回中文)。此外,在讀題的時候需要在草稿紙

上寫下相應的條件,有助于厘清思路。比如:

Step 1: the sum of the lengths of the diagonals of X is equal to the sum of the lengths of the diagonals of Y: a+b=c+d

GRE數學考試考點回顧2.png

Step 2: in X, the length of the longer diagonal is 20 more than the length of the shorter diagonal: b=a+20

Step 3: in Y, the length of the longer diagonal is 8 more than the length of the shorter diagonal: d=c+8

Step 4: what is the area of Y minus the area of X: cd/2-ab/2

就考試的重點而言,涉及整數相關考點的題目最多,占了超過1/4,其中考生需要將整數的整除、奇偶性以及冪運算公式記牢。涉及幾何類的題目占了約20%,其中最多的是正方

形、圓以及坐標系相關的幾何問題,其中有一道題考到了正切,因此考生在幾何上除了記憶相關圖形的周長、面積以及體積公式之外,還需要將三角函數的基本概念復習一下。此外,

涉及到倍數分數以及差值對比的題目也不少,因此考生需要在平時做題的時候就熟悉一下倍數、分數和差值表達的句型。

總結:GRE數學題目考點范圍不變,但是題目長度有所增加或者長題目有所增加。考試重點依然是整數和幾何相關的知識點,記得背誦公式!最后,沖擊滿分的考生可以多練習概率、統計和排列組合的題目,這些題目往往考查了包括整數、幾何的基礎知識點以及概率、統計和排列組合本身相關的知識點,綜合性很高。

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