GRE数学哪些细节容易造成意外扣分

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GRE数学哪些细节容易造成意外扣分

篇1:GRE数学哪些细节容易造成意外扣分

GRE数学哪些细节容易造成意外扣分?这10个易错考点要了解

注意迷惑性信息

GRE数学考试中,有些题目的计算难度并不大,但是往往会有迷惑性的信息出现,考生一定要看清楚问题再作答。考试中数字如果出现零,正负号一定不要漏掉。

看清题目要求

对于计算类的题目考生要看清楚要求是求比率还是求数值,求比率的话不要把前后对象弄错了。另外一类商品打折的题目,关于打折是已经折掉的部分还是折后的价格要仔细读题弄清楚。

不遗漏任何条件

GRE数学考试中有些题目会含有隐含条件,比如包括、不同等字眼,考生一定要仔细,不要漏掉题目中的任何一个信息。

结合生活常识

有些题目需要用到平时的常识,比如树的影子的题目就是用到相似三角形,实际问题中的人员分配、汽车数量都不会出现分数,所以要答出整数解。

注意正负数

GRE数学考试中有一些题目要求比取值范围的大小,在解答时一定要考虑-1、0、1分开的这些区间,不能只把0作为分界点来考虑,那样很不全面,因为很多都是分数的比较。

不要脑补条件

有些题目会涉及到关于整数条件的给出,对于这类题目,考生千万不要想当然得自己为题目添加条件。在解答题目时一定要仔细看清楚,题目中是否提到了整数,如果题目中没有提到整数,一定不要妄自断定这就是整数,即使给出的条件也是整数,一定要按照题目的要求进行作答。

注意度量单位

备考复习中,考生需要首先注意的是,有些题目中会出现度量单位不一样的情况,这样每个数字指代的对象就有差别。在考试中,通常英制的会给出换算,但公制的如厘米或者米就不会给出换算。

确认提交前再次审视

GRE数学考试中,在准备按确认键的时候一定要再审视一下自己刚才做过的题目,有时会发现一些明显的错误。

分析错题原因

对自己做过的题目要进行分析和准则,把握住自己的弱点,有针对性地进行复习。考生应当了解,对于哪些做错的题目,一定是由于自己没有考虑周到;读题时不可以忽略任何一个细节,那些看起来无关的条件和选项,其实有时很重要。

做完题要检查

每个题目做完之后都要进行一下检查,通过向自己提问的方式来看题目是否有把握正确。首先文自己是否看清看懂了题目中所问的问题,其次查看题目中单位有没有变化,再次查看有没有用到所有的原题文字了,然后问自己DS题中有没有单独考虑B,最后验算运算中有没有少掉细微的步骤。

GRE数学常用概念的总结

.个新GRE数学考试最常用的概念:

偶数(even number):能被2整除的整数;

奇数(odd number):不能被2整除的数;

质数(prime number):大于1的整数,除了1和它本身外,不能被其他正整数所整除的,称为质数。也叫素数;(学过数论的同学请注意,这里的质数概念不同于数论中的概念,GRE里的质数不包括负整数)

倒数(reciprocal):一个不为零的数为x,则它的倒数为1/x。

.重要的性质:

奇偶性:偶加偶为偶,偶减偶为偶,偶乘偶为偶;

奇加奇为偶,奇减奇为偶,奇乘奇为偶;

奇加偶为偶,奇减偶为偶,奇乘偶为偶。

等差数列

GRE数学备考资料中绝大部分是等差数列, ,形式主要为应用题。题目会说三年稳步增长第一年的产量是x,第三年的产量是y,问你的二年的产量。

数理统计

.数(mode)

一组数中出现频率最高的一个或几个数。

例:mode of 1,1,1,2,3,0,0,0,5 is 1 and 0。

.域(range)

一组数中最大和最小数之差。

例:range of 1,1,2,3,5 is 5-1=4

.均数(mean) 算术平均数(arithmetic mean)

.何平均数(geometric mean)

n个数之积的n次方根。

.数(median)

对一组数进行排序后,正中间的一个数(数字个数为奇数), 或者中间两个数的平均数(数字个数为偶数)。例: median of 1,7,4,9,2,5,8 is 5 median of 1,7,4,9,2,5 is (5+7)/2=6

ps:GRE考试中经常考察众数与数的个数的积和这组数的和的大小。

.准偏差(standard error)

一组数中,每个数与平均数的差的绝对值之和,再除以这组数的个数n

例:standard error of 0,2,5,7,6 is: (|0-4|+|2-4|+|5-4|+|7-4|+|6-4|)/5=2.4

.tandard variation

一组数中,每个数与平均数之差的平方和,再除以这组数的个数n

例: standard variation of 0,2,5,7,6 is: _ 2 2 2 2 2_

|_(0-4) +(2-4)+(5-4)+(7-4)+(6-4)_|/5=6.8

.准偏差(standard deviation)

standard deviation等于standard variation的平方根

GRE数学高分如何突破

事实上,回读和反复阅读的原因很简单,当一个新的GRE数学题目里面的信息过载,但相对复杂的话题,唯一的问题是不记笔记,读回的结果,忘记了以前的最后一个后读数条件是不完整的,所以他又回到了以前的条件,等了好几次才找到所有条件,问题开始。和很多的数字表示完全用英语授课,而不是阿拉伯数字,如“八百”,“四十”等,在这个时候,如果你不关闭的英文为阿拉伯数字,最后的问题后,即使重新读回来的标题数字,浪费时间。

然而,如果学生做GRE数学题,在阅读过程中,阅读每一个字就把这句话里面的信息点和数字只是写下英文成数学表达式,所以等到看完题目后,草稿纸上显示完整的全路范围内,主题和信息点,看笔记可以立即开始做的问题。信息点,因为每一个字都被转化成音符,整条道路将毫无疑问是必要的回读。的习惯,纠正他们的回读的学生可以拿一张小卡片,写下每一行,并读取信息点后,这条线覆盖,没有回读。随着时间的推移,一次的习惯,这将大大减少回读,反复读了一些问题,以提高阅读速度。

GRE考试中要养成记笔记的习惯,阅读的问题是可以解决的不仅是速度,而且还可以提高做题的准确性。因为“读”这个动作是小于的信息摄入量,“写”这个动作,读标题时,读起来很流畅了很多问题,信息点通过,但直到真正的一点要注意的信息,您将发现,当有些人读它很容易被忽略的细节,而这些细节往往决定对与错做最后的冠军。

GRE数学备考资料的重要性

GRE数学考试中熟悉的意义在于当考生在读新GRE数学题的时候就能把题干的语言在脑海中化成公式,从而加快解题速度,而不用再去想:题目这么说,到底是什么意思?达成这一能力的唯一途径也只能是多做题。即使觉得自己的数学基础不够,书本和教材里面的3000+题目也够提升这一能力了。

例如,我们来看一个新GRE数学题目:(数值比较题)The vertices of an equilateral triangle are on a circle.

The length of a side of the triangle The diameter of the circle.

在拿到题目的时候就应该在脑海中形成这样一个图像:一个等边三角形内接在一个圆里面。那么所有的数值都可以算出来,先不要看题目,我们心算出圆的半径和等边三角形的一个边的关系:1:√3,其他关系,比如三角形和圆面积的关系也可以都算出来,这时候再来看题目的两个题肢:三角形一个边的边长,和圆的直径(注意是直径不是半径),他们的比值就是√3:2,也就是1.732: 2 (这些基本的数值要知道)那么很显然就是选B。

总之,在读题干的时候,预读和预知题肢内容的这一个步骤是很重要的,可以大大加快解题速度。

另外一种情况是记得具体的数值,比如圆周率的数值3.14,就很重要,在很多圆的计算题中,圆的周长,面积的数值基本上都是314的倍数,比如 628,比如157,等等。还有特殊的直角三角形的边角关系,3、4、5;1、1、1.414;5、12、13;1、1.1732、2等,最好熟记,以利于减少计算时间。这样,做题的时间就会从1分钟左右变成30秒不到,那么整个笔试数学的部分就应该提前10-15分钟左右做完。

但是实际做题时间往往仅仅只是减少了5分钟左右,为什么实际和理论的时间预估不同?这个差别就在于很多题目不是只考查一个知识点,而是综合题目,更重要的是,5道图表题和其他应用题的读题时间远远超过了30秒钟的预算。

这就要求同学们做到两点:快速地从应用题冗长的题干里面浓缩出一个数学关系;做图表题中,第一次略读图表时要厘清数量关系而不是关注于具体的数值。

例如:mechanical toy cars A, B, and C, each traveling at its own uniform rate, started from the same point at the same time and raced a 400-meter course. When A crossed the finish line, B was 40 meters behind A, and C was 58 meters behind A. When B crossed the finish line, how many meters was C from the finish line.

整个题目最重要的是能立刻得出关系式:400/A=360/B=342/C.

忘掉不重要的单位,除非单位不同要换算(而这一点往往不会考到,就算考了单位换算也应该在读题的时候加以考虑)。那么ABC三者的速度关系显而易见,最后的答案也应该一清二楚。

GRE数学有哪些备考经验

1、有人总结了一些难题,有的是超难的题,有时间就看,没时间就不看,看了看不懂,不要慌,这种题出了根本就是小概率事件,不要钻进难题的牛角尖,没有太大的用处,弄不好可能得不偿失。

2、在平时的GRE考试备战过程中,要用摸考的规格来复习新GRE数学,不应当词汇题是用摸考的考法,到了数学就很无所谓的样子。在平时的复习过程中要多做GRE数学题,培养题感。尽管数学比较简单,但是它的要求有高。

3、应当把GRE数学词汇掌握住,否则做题没有用处。数学真正比较难的地方就是一些专业词汇。

4、不管是基于什么想法,在最后20天,应当开始复习新GRE数学了。万万不可轻视GRE考试的数学部分,否则拿满分还是比较难的事情。

5、注意总结,数学里边有很多小的陷阱。GRE考试在很多方面都是对智力和逻辑思维的考察。这样的地方不多,总结一下,刻意的避开。

6、要注意在做数学的时候,不要想错几个能得满分,要想怎么样才能全都做对,取法呼上仅得其中。数学是得分制不是失分制,能拿多少就尽量拿多少。

篇2:GRE数学5大容易引起扣分细节指点

GRE数学5大容易引起扣分细节指点 避开它们有效提分

GRE数学出题细节:所有的数都是实数

GRE数学题,如果不特别指出的话,所有数都是实数,考生不需要考虑虚数相关的解题思路。

GRE数学出题细节:图形同平面

除非题目中专门指出,否则默认所有图形都在同一个平面内,一般解题不需要考虑立体结构。

GRE数学出题细节:角为正数

所有涉及到几何中与角有关的题目,角的测量值都是正数,不存在负角度的概念。

GRE数学出题细节:线为直线

所有显示为直线的线均可当作直线来处理。有些考生会发现,可能在机试中,因为电脑显示器的原因,直线有时候会看起来呈“锯齿状”,请不要因此而被误导。

GRE数学出题细节:只能读图不能度量

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GRE数学知识去回答问题。

GRE数学文字归纳题的练习

1.一个红袋子放红球100个,一个绿袋子绿球100个,从红袋子里拿10个放到绿袋子里,再从绿袋子里拿10个放到红袋子里,那现在是红袋子里的红球多,还是绿袋子里的绿球多??

解:一样多

2. x1,x2,x3干活花n个小时,x2,x3干此活花m个小时,rate保持不变,问x1干此或要多少时间?m.n为具体数)

解:(x1+x2+x3)n=m(X2+X3)=?X1

->X2+X3=nX1/(m-n)(X2+X3)

->?=m(X2+X3)/X1=mn/(m-n) (sure)

3.某人车的240升油箱中月初为15/16的满,这人只在月中加了100升油,月末时油箱只有3/8满. 问这个月油耗量.

答:(简单) 240 15/16 + 100- 2403/8=235(升)

4.A 在B西30,北20这么个位置,C在B东10,AC与B正北方向的直线的交点距离B的距离。嗨,中英文都有点绕。题不难,千万看清了。

MY KEY:5 相似三角行解题:x:20=10:(10+30) 得出x=5

5.有一道图表题,给出了几个地方1987年的什么数字以及从86年到87年增长的比例。计算86年这几个地方的和。计算量较大,大家记住4,400,000就可以了

6.有一道图表题虽然不难,但算死你,好像说原来有$10,000,第一年获益率为2.4%,第二年-1.6%(可能是)问道第二年末是多少钱(这是精练,图表很长,找也要找一阵)好像选A(80%)或B还是这个图;问如果某年的开始是d元,有1/3的gain来自第一个季度,问后三个季度平均每个季度的gain.

解:0.5(sure)

7.列表显示1980-1989年间某收入的变化比例(percent of $10000)。(例如,19802.39, 1982 3.17, 1983 -2.55...... 数值自拟)。问题1,if in the begining of 1982 the income is d dollar,and 1/3 of the income of that year g at the first quarter, then what is the average income of the remained quarters.

A:0.5(sure)

图表: 10,000元投资的平均.X, 分两部分,一列是收益百分比,一列是实际.金额.

问1. 投资D元, 全年收益的1/3 在第一季度获得,求余下三个季度获利多少.

问2.算.X比例的差值

8.衣服店老板每件赚售价的13%,那天共赚24600大洋,问每件售价

解:选不知道。

9.一个班有720人,其中200人学A,350人学B,300人学C,恰好学其中两种的有120人,另外还有100人无所事事,什么都不学。问:学三种的有几人?

解: 720-100=(200+300+350)-120-2X 推出X=55

(有两种版本,还有一种是“学两种的人为150”,那答案就是40了。方法都一样)

10.一本书编页,用了152个(182个?不记得了)数字,有5页没编,问这本书多少页,该死的page,我当时没有反应过来,一页是正反面!看到选项数字那么小还很奇怪!!

解:152/2+5=81

11.一块砖放在盒子里,盒子60,砖和盒子每个面之间有0。5厚的填充物,问砖体积

解: (6-2.5)10-1)(4-1)=135

12.一个是图表题:一个表是各年有多少妇女,一个表是每一千个妇女生了多少的孩子。

有一问,突然出现问3/5的婴儿是女的,女生的增加和男同胞的增加的比,妇女生小孩的一题11.1%

13.还有一道图表题,讲对17890(乱编)个人进行汽车 保险 意向的调查,每个人都要对

7个ITEM中的任何一个做出YES, MAYBE 或NO 三种回答, 然后给一系列的数据。

不难, 但要对它要你求什么东西。好好理解,我开始就有一问没看懂。一个 yes 占 17% 另一个 30% 两个一起都答 yes的 12%。 问一个都不回答yes的x%?

答案 65%

14.几个国家比较在卫生保健上的投入,和国家的收入。画了个柱状图。然后要你先找国民收入的中数,你一定先排一下收入的dollar数,大致是瑞士〈瑞典〈。。。。加拿大〈。。。。〈美国。(最富的是美国,美国人考试的时候都不忘教育你,还叫你一个个的排!)中数是canada???。然后就好了,是比较谁在医疗上花的多,钱多多少。

大致如此,就是计算繁了

15.图表题:七个国家的每1000个人上网的人数, 分别是X年和Y年, Y=X+3, 一问如果Finland的从X年到Y年的人数每年递增33.3%,问X+2年的人数接近多少

二问Iceland 和Japan的人数在Y年的比

16.一表格,四种不同颜色blue,red,yellow,???的小船,分别有6,4,3,2个座位(顺序不一定),船承重能力各为多少多少的.一题是问有三条船,16个人刚好坐满,问red的船(有4个座位的)(要不就是red的船上的座位)的比例?

17.图表题:

美国1980年, 1985年, 1990 年, 三个年度人口最多的前8个洲, 按人口数排名列表.

问1. 只有一年排进前8名的有几个洲 (3个, SURE)

问2. 1985-1990年人口增加最多的是哪个周

18.有一个图表题,2问,关于圣露易斯的什么东东,两张表,反正下面一个没用,有用的数据都在上一个表中,一问是这个东东平均单价$500,total数量表上有,圣露易斯的销售收入占总收入的70%,求该地区的收入,选那个100(sure)~

19.有个图表题,(柱状图)是对200个司机师傅做调查,提供五个买车因素,每个司机对每个因素都要做出或somewhat important 或very important的回答.图是五个柱,每柱上面一段画回答 somewhat important的,下半段画回答very important的.有一题,问题长达三整行,其实就问这五个因素中,有至少60%的司机说somewhat important的有几个.注意回答somewaht important 的人数用200减交点数值???

GRE数学需要注意的难点

1、一些易混淆的术语:和sum 差difference 积product 商quotient

2、如果在题目中见到一些怪异的符号如@,不必理它,那只是的障眼法,不影响解题。

3、质数(prime num)及合数(composite) :除2外所有的质数都是奇数,1不是质数。质数都是正数。

4、等差数列(arithmetic sequence),等比数列(geometric sequence)等差数列和=(a1+a2)/2

5、值域(range)=最大值-最小值:重数(mode):集合中出现次数最多的数;标准方差(standard deviation)特性:一组数中所有数都同加或同减一个数,其标准方差不变。

6、线速度V,角速度A :A=V60/(2I)

7、摄氏(Celsius),华氏(Fahrenheit) :c=5f-32)/9 ,0C=32F,100C=212F,37C=98.7F

8、排列组合:P(n,m)=n!/(n-m)! P(n,n)=n!

GRE数学如何提高做题速度

熟悉知识点分成两个部分,首先第一个是熟悉公式,比如几何里面的图形面积公式,比如方程中根与系数关系公式,因式分解公式等等。

熟悉的意义在于当考生在读题的时候就能把题干的语言在脑海中化成公式,从而加快解题速度,而不用再去想:题目这么说,到底是什么意思呢?达成这一能力的唯一途径也只能是多做题。即使觉得自己的数学基础不够,书本和教材里面的3000+题目也够提升这一能力了。

总之,在读题干的时候,预读和预知题肢内容的这一个步骤是很重要的,可以大大加快解题速度。

另外一种情况是记得具体的数值,比如圆周率的数值3.14,就很重要,在很多圆的计算题中,圆的周长,面积的数值基本上都是314的倍数,比如 628,比如157,等等。还有特殊的直角三角形的边角关系,3、4、5;1、1、1.414;5、12、13;1、1.1732、2等等,最好熟记之,以利于减少计算时间。

这样,做题的时间就会从1分钟左右变成30秒不到,那么整个笔试数学的部分就应该提前10-15分钟左右做完。

但是实际做题时间往往仅仅只是减少了5分钟左右,为什么实际和理论的时间预估不同?这个差别就在于很多题目不是只考查一个知识点,而是综合题目,更重要的是,5道图表题和其他应用题的读题时间远远超过了30秒钟的预算。

这就要求同学们做到两点:快速地从应用题冗长的题干里面浓缩出一个数学关系;做图表题中,第一次略读图表时要厘清数量关系而不是关注于具体的数值。忘掉不重要的单位,除非单位不同要换算。

GRE数学分享有效的复习方法

1.数学满分=认真+不轻视。这是新GRE数学复习所应当遵循的头号准则,下面一切所说的,都是基于这个原则。

2.我想不管是基于什么想法,在最后20天,应当开始复习新GRE数学了。不轻视数学,否则拿满分还是比较难的事情。

3.应当把数学的基本词汇掌握住,否则做题没有用处。数学真正比较难的地方就是一些专业词汇。

4.要用摸考的规格来复习数学,不应当词汇题是用摸考的考法,到了数学就很无所谓的样子。记住,尽管数学比较简单,但是它的要求有高。

5.注意总结,数学里边有很多小的陷阱,我做题的时候有一个感觉,就是数学考试和我们平时的考试不一样,更像一个智力测验,有时候需要转弯,这样的地方不多,总结一下,刻意的避开。

6.要注意在做数学的时候,不要想错几个能得满分,要想怎么样才能全都做对,取法呼上仅得其中。

7.有人总结了一些难题,有的是超难的题,有时间就看,没时间就不看,看了看不懂,不要慌,这种题处了根本就是小概率时间。

篇3:GRE数学如何彻底避免意外扣分

GRE数学如何彻底避免意外扣分?这些答题细节要了解

注意度量单位

备考复习中,考生需要首先注意的是,有些题目中会出现度量单位不一样的情况,这样每个数字指代的对象就有差别。在考试中,通常英制的会给出换算,但公制的如厘米或者米就不会给出换算。

看清题目要求

对于计算类的题目考生要看清楚要求是求比率还是求数值,求比率的话不要把前后对象弄错了。另外一类商品打折的题目,关于打折是已经折掉的部分还是折后的价格要仔细读题弄清楚。

不遗漏任何条件

GRE数学考试中有些题目会含有隐含条件,比如包括、不同等字眼,考生一定要仔细,不要漏掉题目中的任何一个信息。

注意迷惑性信息

GRE数学考试中,有些题目的计算难度并不大,但是往往会有迷惑性的信息出现,考生一定要看清楚问题再作答。考试中数字如果出现零,正负号一定不要漏掉。

结合生活常识

有些题目需要用到平时的常识,比如树的影子的题目就是用到相似三角形,实际问题中的人员分配、汽车数量都不会出现分数,所以要答出整数解。

注意正负数

GRE数学考试中有一些题目要求比取值范围的大小,在解答时一定要考虑-1、0、1分开的这些区间,不能只把0作为分界点来考虑,那样很不全面,因为很多都是分数的比较。

不要脑补条件

有些题目会涉及到关于整数条件的给出,对于这类题目,考生千万不要想当然得自己为题目添加条件。在解答题目时一定要仔细看清楚,题目中是否提到了整数,如果题目中没有提到整数,一定不要妄自断定这就是整数,即使给出的条件也是整数,一定要按照题目的要求进行作答。

确认提交前再次审视

GRE数学考试中,在准备按确认键的时候一定要再审视一下自己刚才做过的题目,有时会发现一些明显的错误。

分析错题原因

对自己做过的题目要进行分析和准则,把握住自己的弱点,有针对性地进行复习。考生应当了解,对于哪些做错的题目,一定是由于自己没有考虑周到;读题时不可以忽略任何一个细节,那些看起来无关的条件和选项,其实有时很重要。

做完题要检查

每个题目做完之后都要进行一下检查,通过向自己提问的方式来看题目是否有把握正确。首先文自己是否看清看懂了题目中所问的问题,其次查看题目中单位有没有变化,再次查看有没有用到所有的原题文字了,然后问自己DS题中有没有单独考虑B,最后验算运算中有没有少掉细微的步骤。

GRE数学经典的文字题

1、一表格,四种不同颜色blue,red,yellow,???的小船,分别有6,4,3,2个座位(顺序不一定),船承重能力各为多少多少的、一题是问有三条船,16个人刚好坐满,问red的船(有4个座位的)(要不就是red的船上的座位)的比例?

2、图表题:

美国1980年, 1985年, 1990 年, 三个年度人口最多的前8个洲, 按人口数排名列表、

问1、 只有一年排进前8名的有几个洲 (3个, SURE)

问2、 1985-1990年人口增加最多的是哪个周

3、有一个图表题,2问,关于圣露易斯的什么东东,两张表,反正下面一个没用,有用的数据都在上一个表中,一问是这个东东平均单价$500,total数量表上有,圣露易斯的销售收入占总收入的70%,求该地区的收入,选那个100(sure)~

4、有个图表题,(柱状图)是对200个司机师傅做调查,提供五个买车因素,每个司机对每个因素都要做出或somewhat important 或very important的回答、图是五个柱,每柱上面一段画回答 somewhat important的,下半段画回答very important的、有一题,问题长达三整行,其实就问这五个因素中,有至少60%的司机说somewhat important的有几个、注意回答somewaht important 的人数用200减交点数值?

GRE数学词汇问题怎么解决

一、将遇到的不认识的GRE数学词汇总结出来,一并记忆。

如果说没有办法或者没有时间把所有的单词都从题目里面挖出来,那么有一个比较好的方法来认识数学生词,就是通过中文来找出英文相对应的翻译。

比如说画一个直角三角形,其中一个是30度的锐角,另外一个是60度的锐角。那么中文都能想明白,就开始想它们的英文对应:直角三角形怎么讲?锐角、直角、钝角分别怎么说?两个角互余怎么?如果是互补又该怎么说?直角边和斜边的名字分别是什么?

凡是遇到想不出来的就查字典找一找,字典上都有;凡是能想出来的就写一写,记一记,加深记忆,那么坚持了两个“凡是”,数学生词应该不在话下。

二、GRE数学中词汇都明白,但是整个题目还是不知道什么意思,那该如何是好呢?

举个例子:

Of the positive integers that are multiples of 30 and are less than or equal to 360, what fraction are multiples of 12?

其实呢,如果没有这个倒装,应该没有任何问题:What fraction of the positive intergers that are multiples of 30 and are less than or equal to 360 are multiples of 12?主要就是一个阅读的问题:A占B的几分之几用英文解释是:what fraction of B are A 。

因此,这个问题就归结于阅读问题,而这个阅读的问题不在于单词,而在于这么一点:不仅仅是单词,一些数学里面很“口语”化的内容用英文怎么表达?

提供一种解决的方法:在题目里面遇到了这样的说法,自己翻译出来,然后再用同样的语言来造句和自己出题给自己做。

比如,遇到了fraction这个结构以后,自己给自己出个题目:of the positive integers that are less than or equal to 100, what fraction are prime numbers? (自己数一下好了)

以下一些“口语化”的数学语言,希望同学们自己完成练习:

A和B成比例

A和B相似(几何)

A打了八折

A的5次方

A的倒数的完全平方的绝对值

三、还有一种情况也可以归为单词认识但是不会做的情况,这个情况可以认识是题目生造定义,必须慢慢熟悉他们的说法。

比如最经典的题型就是10里面有多少个1/4的题目,说白了是数数题,但也能让人为之一愣。

再比如:In country A , a person is born every 3 seconds and a person dies every 20 seconds. Therefore, the birth and death rates account for a population growth rate of one person every___ seconds.

这个题目就属于生造概念:一般来说出生率是以秒为单位,而这个题目以人为单位:每出生一个人需要多少秒。正常点都不会这么干,但是在英语里确实能遇到这样的问题:实际上也就是把分子分母颠倒了而已。

所以,针对这种情况,我们可以设想:凡是有多少多少单位每秒,每小时的,都可以倒过来练习一下,并且千万要坚信自己,这个题目一定没有想象中的难,只不过是颠倒了,或者绕了一下而已。

GRE数学典型题型的解析

具体题型主要有多选1;多选多;填答案;比大小。

Sample questions:

多选1

1. The figure above shows a circle with center C and radius 6. What is the sum of the areas of the two shaded regions?

7.5π

4.5π

Answer: D

2. The figure above shows the graph of a function f, defined by f(x)=|2x|+4 for all numbers x. For which of the following functions g defined for all numbers x does the graph of g intersect the graph of f ?

g(x)=x-2

g(x)=x+3

g(x)=2x-2

g(x)=2x+3

g(x)=3x-2

Answer: E

篇4:GRE数学如何彻底避免意外扣分

多选多:

1. Each employee of a certain company is in either Department X or Department Y, and there are more than twice as many employees in Department X as in Department Y. The average (arithmetic mean) salary is $25,000 for the employees in Department X and is $35,000 for the employees in Department Y. Which of the following amounts could be the average salary for all of the employees in the company?

Indicate all such amounts。

$26,000

$28,000

$29,000

$30,000

$31,000

$32,000

$34,000

Answer: A and B

2. If f, g, and h are positive integers, f is a factor of g, and g is a factor of h, which of the following statements must be true?

Indicate all such statements。

f is a factor of g2

f is a factor of gh。

f is a factor of h-g

Answer: A, B, and C

填答案

1.Answer: 101

2. A university admitted 100 students who transferred from other institutions. Of these students, 34 transferred from two-year community colleges, 25 transferred from private four-year institutions, and the rest transferred from public four-year institutions. If two different students are to be selected at random from the 100 students, what is the probability that both students selected will be students who transferred from two-year community colleges?

Give your answer as a fraction。

比大小:

A. Quantity A is greater。

B. Quantity B is greater。

C. The two quantities are equal。

D. The relationship cannot be determined from the information given。

A symbol that appears more than once in a question has the same meaning throughout the question。

1.

比大小图

Answer: A

对策:

扎实数学知识,计算时候不要出错。

GRE数学高分知识整理

一、高中知识

各种三角诱导公式,和,差,倍,半公式与和差化积,积化和差公式,平面解析几何。

说明:Cracking the GRE Math Test里面第一章就是复习高中知识,我看内容基本差不多了,大家也就不用另外找书复习了。

二、数学分析

极限,连续的概念,单变量微积分(求导法则,积分法则,微商),多边量微积分及其应用,曲线及曲面积分,场论初步。

参考书:张筑生先生的3册《数学分析新讲》,Walter Rudin的Principles of Mathematical Analysis

说明:Cracking the GRE Math Test用了两章来复习数学分析,基本够了。我只是另外看了一些场论的公式以及Fourier分析的一点内容。不过sub中有一些数学分析方面的题目很灵活,要你判断一个命题是否正确,对于错误选项如果想不出反例来就有些麻烦了,大家要注意。

三、微分方程

基本概念,各种方程的基本解法。

参考书:Wolfgang Walter, Ordinary Differential Equations

说明:以Cracking the GRE Math Test中的相关章节为主,一般不难。

四、线性代数

普通代数,艾森斯坦因法则,行列式,向量空间,多变量方程组解法,特征多项式及特征向量,线形变换及正交变换,度量空间。

参考书:镇系之宝,张贤科老师的《高等代数学》,Seymour Lipschutz的Theory and Problems of Linear Algebra

说明:Cracking the GRE Math Test这本书里面的东西也差不多够了,不过鉴于sub越来越难,大家还是回去翻翻张老师的书吧。

五、初等数论

欧几里得算法,同余式的相关公式,欧拉-费马定理。

参考书:冯老师的《整数与多项式》

说明:以Cracking the GRE Math Test相关章节为主。

六、抽象代数

群论及环域的基本概念及运算法则。

参考书:冯老师的《近世代数引论》

说明:抽象代数的内容最近几年越来越多,今年考试中考到了极大理想。还好我在做REA的题目的时候碰到了高斯整环的题目,所以回去好好翻了翻书。大家要认真准备这一部分的内容。

七、离散数学

命题逻辑,图论初步(基本概念,表示法,邻接and关联距阵,基本运算定理如V+F-E=2),集合论(注意了解一下偏序的概念)。

参考书:J. A. Bondy and U.S.R. Murty,Graph theory with applications

说明:逻辑的题目比较简单,也就是命题逻辑的基本运算,最多再加上真值表,随便找一本离散数学的书看看基本概念就行了。集合论的题目也比较简单。不过由于系里面没有开图论的课,所以大家还是好好看书,Bondy这本书看看第一章就行了。

八、数值分析

高斯迭代法,插值法等基本运算法则。

参考书:李庆扬等的《数值计算原理》

说明:内容很少,我考试的时候没见过。

九、实变函数

可数性概念,可测,可积的概念,度量空间,内积等概念。

说明:以Cracking the GRE Math Test相关章节为主。

十、拓扑学

邻域系,可数性公理,紧集的概念,基本拓扑性质。

参考书:J. R. Munkres, Topol。y

说明:重点,近几年的分量越来越大。以Cracking the GRE Math Test相关章节为主,不过据说考过foundamental group,大家还是好好看看书。

十一、复变函数

基本概念,解析性(共厄调和的概念),柯西积分定理,Taylor%26amp;Laurent展式(重点),保角变换(非重点),留数定理(重点)

参考书:方企勤先生的《复变函数教程》,Lars V. Ahlfors的Complex Analysis

说明:学过复变就行了,一定要记住基本公式。

十二、概率论与统计

古典概型,单变量概率分布模型,二项式分布的正态近似

参考书:李贤平的《概率论基础》

说明:以Cracking the GRE Math Test中相关章节为主,一般来说很简单。不过由于2字班没有学过古典概型(托文sir的福),所以我还是把李贤平的这本书好好看了看。统计方面不用担心,不会有难题,所以不用专门找书看。

篇5:GRE作文容易出现哪些扣分问题

GRE作文容易出现哪些扣分问题

词汇和句子问题

单词拼写

拼写错误是GRE写作中最不划算的扣除项目。虽然少量的拼写错误可能不会对总分产生很大影响,但如果拼写错误较多,就会影响感知。建议你在写完这篇文章后迅速复习,以检查是否有拼写错误。

词语重复

词汇量不足的考生写的一些文章中经常会出现单词重复的问题。重复使用同一个单词会使你的文章显得繁琐和冗长,间接暴露出你的英语背景不足以准备词汇的问题,这是写作中的一大禁忌。建议考生在写作时使用多种文字来显示自己的详细情况。

句型的使用

GRE写作不需要使用太复杂的句型。考生不应该为了好看的文章而使用他们不确定的复杂句型。如果他们所写的复杂句子中有各种语法错误,gre写作技巧,gre考试培训那就更糟了。记住一句话:用最精辟的语言表达最完整的信息。当然,如果一定要追求漂亮的句子,考生可以在作文中加入括号、状语等形式,这也可以使文章更加出色。

文章结构问题

逻辑结构

外国人非常重视英语写作的逻辑性,尤其是逻辑思维能力是GRE考试的重点之一。此外,GRE两篇作文的主题都是非常重视文章整体逻辑的议论文。所以在GRE作文中,一定要把文章的部分写清楚。全文逻辑结构最好在写作前做个提纲,这样考官一眼就能看清楚你的逻辑结构,体现出文章清晰的逻辑思维。

开始和结束

作文的开头和结尾很重要。好的开头可以直接表达观点,gre写作技巧,gre考试培训好的结尾可以概括全文,升华主题。因此,文章的开头和结尾都将起到非常重要的作用。我们不应该因为没有时间而忽视开始和结束。

其他扣分问题

文章长度

作文字数不够,文章篇幅短是GRE高分作文的一大禁忌。尽管GRE作文对字数没有要求,但无论如何,文章必须有一定的篇幅,这在一定程度上代表了考生的创新能力。篇幅过短的文章不能清楚地说明要表达的意思,容易使考生出现写作能力不足的现象。

GRE写作高分范文:下一代的教育

GRE写作题目:

How children are socialized today determines the destiny of society.Unfortunately, we have not yet learned how to raise children who can help bring about a better society.

现在孩子的社会化程度决定了社会的命运。可惜的是,我们还没有学会教孩子怎么样去建设一个更好的社会。

GRE写作范文:

People are never born into separated environment, while society will be their destiny to face and join no matter whether they are willed to do so. After being educated in greenhouses of campus,children will one day step into this destiny inevitably, therefore making socialization an indispensable progress of their growth. However, it seems to me that socialization is a method of acclimating to the surroundings and such abilities are inborn. So it may be too extreme and pessimistic to say we have not yet learned how to raise children who can help bring about a better society, especially when the education and other related fields are keeping a high-speed development.

Socialization, defined as converting and meeting the social needs, determines a society's future by making its members work as effective parts of it. Society is a huge constitution combined by different individuals and groups, who need cooperation with each other and gain the methods for living and developing. Modern development has made such cooperation spear into every corner of our daily life: industry, service, agriculture and academic fields provide the people living in a society what they need, and supported by each other's products.

Education, as a way for us to raise children, gives them knowledge to take parts in this society and realize their personal values. When entering schools, children are living with other contemporaries for years, learning how to communicate with each other, gaining senses of cooperation,competition and understanding. After that, they graduate and face the practical issues, such as manufacturing, researching, designing and so forth. All these issues ask for cooperation during modern time, because they are all highly complicated with different products provided by different fields. An architecture design project, for instance, contains parts of architecture design, structure design, air-conditioner system, water supply system and so forth. During its designing progress,architects and other experts need communicate with each other,

persuade or be persuaded to change their ideas and plans. If some one of them are not socialized and just keep on working individually, the outcomes will be not reasonable or even not feasible.

Moreover, socialization is an indispensable part of social living, even people do not take parts in producing. We are living in a connected world, facing other peoples for information, products and so forth. After graduating, children will leave their greenhouses which are supported by their parents, teachers and society. They have to work and live directly with other social members. If they are not socialized, and just continue their greenhouse life, they will find the world as a vacuum, bogging them with complex relation of people. In Japan, a group of people are called OTAKUs, who are trapped by their childhood interests, including animation, video game,internet, and the sense of security at home. Those people are a reverse example of those who are not well socialized. They have their own worlds, cut off with others, and they are afraid of communicating. As a result, certain social problems have long been reported among these OTAKUs, such as suicide, crime, psychic diseases and so forth. In this case we may know the importance of socialization.

GRE写作高分范文:想法付诸行动的困难

GRE写作题目:

Practicality is now our great idol, which all powers and talents must serve.Anything that is not obviously practical has little value in today's world.

GRE写作正文:

In today’s society idealism seems to become an ideology that is marginalized and practicality is our great idol, thus, the speaker asserts that anything that is not practical bears little value. I admit that being practical is the wide-accepted dogma in order to survive in this world, but by going too far to claim that anything that is not practical has little value is against the empirical observation as well as the general stimulus that push the human society forward.

Admittedly, practicality has become a cult in today’s society. Too often do we hear people talk about being practical whenever they come to make important decisions or choose between several alternatives. The deep-rooted cause underlying this phenomenon is that with the development of modern society, the emphasis is placed more on financial gaining, quick fame, sensible choice and so forth. Our society is rather stable compared with that of the last century when war, violence, human right movements has become the symbol of that period. People are enjoying this peaceful environment with less crucial missions rested upon them and as a result, they shift from idealism to struggle for the common well being of mankind to the practical concept of individual achievement.

This ideology has its merits since after all the disaster and upheaval that our human race has undergone, it is judicious to focus on the economic aspect of things in order to tackle the most important social problems such as poverty, hunger and environmental problems which all deserve us to sit down and work out practical solutions. On the personal level, being practical is how a person would possibly succeed in his career or personal life. One is likely to make sensible decisions for his education and job choice on the basis of practical consideration of his own strength and weakness and careful analysis of the prospect of research direction and job market. Even those in power and intellects need to consider practically since hasty decision built upon pure ideal meditation would hardly find its way in the modern society and is doom to failure.

Agreeing with the speaker that practicality has become the great idol in our society, I am strongly against his point that anything that is not practical has little value. Even in today’s society, idealism is by no means relegated to the place of total neglect and disregard. For one thing, in history, so much achievement is the outcome of several generations’ struggle such as fighting for equality for women, human rights movement,etc. In today’s society, practicality is the way we can obtain our goal but idealism offers the philosophical explanation of why we should set this as our goal and the clear the ultimate value of our pursuing. What is more, by totally fixed one's eyes upon the practical aspect of things, we face the danger of neglecting one important part of our pursuit, that is the mental enjoyment brought out by idealism. If we have a clear goal set in mind and put practical endeavor at the same time, the result would be more satisfactory and valuable.

To sum up, I agree with the speaker insofar as the wide acceptance of practicality is considered. Being practical is the tenet of modern society and it does shed light on the wise way of doing things and obtaining goals, no matter in the personal or social level.But the speaker goes too far by claiming that it is the only valuable ideology in society.I am strongly against this idea since in history or at present, we human beings still need the philosophical explanation to clear our goal and to provide motivation. In this aspect, idealism would never be replaced with pure practical consideration. Otherwise,human society will be replete with insensible people directed by economic profit and quick fame and recognition.

篇6:GRE阅读哪些原因容易导致扣分

GRE阅读提分难度高别埋头做题 从发现扣分原因开始提升

GRE阅读哪些原因容易导致扣分?

首先,考生需要明确的是GRE阅读的主要扣分原因有哪些。许多同学阅读出错只会根据错题本身进行分析,却忽视了从更高层面去分析错误的类型和具体原因。下面小编就为大家介绍3个最常见的GRE阅读扣分原因。

1. 定位技巧未掌握

GRE阅读文章篇幅不一,大致可分为短篇文章和长篇文章,其中大部分阅读包括逻辑阅读的文章都是短篇,一次GRE考试中长篇文章的数量一般只有1篇。但恰恰是这1篇的长篇阅读,才是最让考生头痛的内容。这是因为长篇文章往往涉及到一些比较专业晦涩的科技类社会类内容,文章中存在大量长难句式和冷僻生词,本身具备一定难度,通篇阅读往往需要大量时间。同时文章中往往会涉及到许多细节内容,题目中也会有涉及到这些细节的部分,定位就成为了大问题。想要看的细节找不到在哪里,只能重读一遍,大大浪费了考试时间。

应对长篇文章,最好的办法还是快速阅读+做笔记的方法。长篇文章不需要全部完整地详细阅读,在快速阅读过程中,大家应该以理解文章整体大意和各段落的重心思想为主。对于各类细节内容,只要在笔记上进行标记,知道其所处位置即可。等到解答相应的细节题时,再根据标记快速返回,就能准确定位到具体内容,提升解题效率。

2. 被文章细节带偏注意力

在GRE阅读题中,为了证明作者观点,文章中常会使用到一些具体的数字,有些数字十分复杂,涉及许多具体内容。而这些数字加入出现在题目当中,就会提升题目难度,特别是在一些Support或者Infer题目中,选项中的数字可以说是扣分的主要原因。

想要应对好复杂数字问题,考生首先需要培养阅读过程中对于数字的敏感性。只要在文章中看到,建议大家都第一时间做好标记,以便之后返回查找。同时,如果在题目选项中看到出现了数字问题,首先要区分是否是有关内容。很多选项提到了一堆数字,本身却和题目毫无关系,只是干扰项,大家一定要学会分辨并及时排除。同时,面对数字题时如果实在没有头绪,可以通过排除法来解题,重点还是在理解题目本身。

3. 解题效率低时间不够用

细节题是套路题型,但有时候也会出现变化。很多考生解答细节题时,往往会按照返回原文查找,然后根据原文内容进行解题。但很多时候,原文中会出现许多其实并没有作用的干扰性细节,大家不能简单地按照原文提到就是对,没提到就是错的思路来解题。正确做法是先看懂题目,然后把涉及到的细节进行分类排除,只保留真正有关的细节,如此一来就能顺利应对好细节题中的那些隐藏陷阱和扣分点。

GRE阅读:省略结构解析

在英语的行文中,大家常常被其中的词的省略造成的麻烦所困扰。其实这种困扰主要出自我们对其英文行文表达习惯和修辞手法的不了解。一般说来,英语文中的省略需遵守两个原则:一是这个词可有可无,或者是多余的,总之就是少了它之后不会改变原文的意思,二是省略的词义已经在上下文中得到了充分的体现。这里举个简单的例子让大家,先吃个开胃餐:

Someone traveling alone, if hungry, injured, or ill, often had nowhere to turn except to the nearest cabin or settlement.这句话的中文意思是独自旅行的人,要是饿了、受伤了或者生病了,除了最近的小木屋或居民点,常常无处求援。这个句子在if后面省略了he is,这是因为在时间,地点,条件,让步,方式状语从句中,如果从句的主语与主句的主语相同(或为it),而从句的谓语又含有be(包括联系动词be和助动词be),则可把“主语+be”省略掉。但要注意有一类句子和省略句有相似的地方,如:You must get out of the city, and that quickly.(你得出城,而且得快.)这样的句子并不是省略句,因为后一句中有that代表了要表示的意思。

He believes, although perhaps he does not know he believe it, that the more extensive verifications are, that the more frequently experiments have been made and results of the same kind arrived at, that the more varied the conditions under which the same results have been attained, the more certain is the ultimate conclusion, and he disputes the question no further.

句子解析:在这句子由and连接的两部分构成,第一部分中although引导的其让步作用的状语从句将believes与其宾语部分分割开来,believe后面的宾语部分包括三个that引导的从句,和后面and前的部分,需要注意的是这里用了the more…the more…的结构,其中第二个the more子句中,arrived at省略了have been,而第三个the more子句中包含了一个由which引导的定语从句。

GRE阅读:省略结构解析

句子翻译:他相信,尽管他或许不知道自己相信,验证范围越广泛,试验做得越多且得出的结果相同,而且得出同一结果的条件越是多样化,则最终的结论就越肯定无疑,他再也不对这个问题提出质疑了。

What is questioned is whether a country like Britain has a chance, assuming it has the will, to succeed where so many have failed, and even assuming that it has, should make the tremendous effort and take substantial financial risk of trying to leap-fr. into leadership in entirely new technol.y, or whether it should take the softer option of merely catching up with the rest of the industrialized world.

句子解析:这是一个主系表结构。What is questioned是主语从句。表语是两个以whether引导的从句。第一个whether从句的主干结构是a country has a chance to succeed and should make the tremendous effort and take substantial financial risk of trying to leap-fr. into leadership in entirely new technol.y,而两个assuming引导的从句用来表示假设,此外where引导的状语从句是为了做一对比,并且在第二个assuming从句的it has后面省略了the chance;第二个whether从句结构比较简单不再仔细讨论。

句子翻译:现在提出的问题是,像英国这样的国家,假如愿意的话,是否有可能在很多国家已经失败的方面获得成功。假如有这种可能,英国是否应尽最大的努力,冒最大的财政风险,一步进入全新技术的前列,或者应该采取比较稳妥地选择,只是赶上其他工业国的步伐。

篇7:GRE作文语法扣分细节提点

那么,GRE写作中有哪些大家常会犯错并可能引起扣分的语法错误呢?小编为大家总结了以下5种:

1. 基本词性的错误使用

“词性误用”常表现为:介词当动词用;形容词当副词用;名词当动词用等。

比如:None can negative the importance of money.

分析:negative系形容词,误作动词。

改为:None can deny the importance of money.

2. 多种常见不一致现象

所谓不一致不光指主谓不一致,还包括了单复数不一致、时态不一致以及代词不一致等。

比如:When one have money, he can do what he want to.

分析:one是第三人称单数,因此本句的have应改为has; want应改为wants, 本句是典型的主谓不一致。

改为:When one has money, he can do what he wants (to do).

3. 修饰语位置的错误摆放

英语与汉语不同,同一个修饰语置于句子不同的位置,句子的含义可能引起变化。对于这一点考生们往往没有引起足够的重视,因而造成了不必要的误解。

比如:I believe I can do it well and I will better know the world outside the campus.

分析:better位置不当,应置于句末。

4. 不完整句式问题

在口语中,交际双方可借助手势语气上下文等,不完整的句子完全可以被理解。可是书面语就不同了,句子结构不完整会令意思表达不清,这种情况常常在主句写完以后,作者又想加些补充说明时发生。

比如:There are many ways to know the society. For example by TV, radio, newspaper and so on.

分析:本句后半部分“For example by TV, radio, newspaper and so on.”不是一个完整的句子,仅为一些不连贯的词语,不能独立成句。

改为:There are many ways to know society, for example, by TV, radio, and newspaper.

5. 悬垂修饰语的逻辑关系混乱

所谓悬垂修饰语是指句首的短语与后面句子的逻辑关系混乱不清。

比如:At the age of ten, my grandfather died.

分析:句中”at the age of ten“只写出十岁时,但没有说明“谁”十岁时,按一般推理不可能是my grandfather, 如果我们把这个悬垂修饰语改得明确一点,读者或考官在读句子时就不会误解了。

改为:When I was ten, my grandfather died.

GRE作文语法扣分现象情况分析

GRE作文满分为6分,而其中涉及到语法拼写等文体问题的分值大致在1分左右。一般来说,数量较少的拼写错误可能会被考官直接忽略,但一些比较明显的语法错误往往会成为主要失分点。1分之差意味着作文评分掉了一个档次,原本还算是高分的4分作文直接变成了平均分水平的3分,这对于想要申请文科专业的考生来说还是比较严重的问题,这是因为许多文科院校专业对GRE作文都有较高标准,会把作文成绩作为一个重要的申请资格审核标准来看待。

GRE写作高分范文:现代摄像机和印刷术

“The video camera provides such an accurate and convincing record of contemporary life that it has become a more important form of documentation than written records.”

摄像机可以通过如此精确而有力的记录手段来再现当代生活,因此它已经代替书面记录成为了一种更重要的记录手段。

GRE写作范文:

“The video camera provides such an accurate and convincing record of contemporary life that it has become a more important form of documentation than written records.”There have been many methods of documenting in the history of human, from carved ancient pottery to sheepskin documents, of which the video camera may be the newest form with certain superiorities and inferiorities to written records. The advantages of video camera certainly make it an important form of documentation, but not to the extent of being more essential than written records due to its disadvantages.

To begin with, video can be interpreted as a series of pictures associated along the time, while written records can be considered as the descriptions of these pictures.Therefore, it is undoubtedly that video contains much more information than that of written records. From a video, we can clearly know what happened with subtle details.Merely with a television set, we can easily watch the happenings at home, such as the Olympic Games, comfortably sitting on the sofa, needless to be present on the spot.

And more excitedly, certain close-up enables us to scrutinize our favorable athletes. If there isn‘t video camera, we may be unable to enjoy such activities unless we can afford time and expense to be on the spot. While it is true that we can also be acquainted with the circumstances through newspaper or other media, however, the written record may be unable to present them as accurate as video. The imagination from the reports, however detailed, dooms to be imaginary, by all means different from the real circumstance, which video can represent. Moreover, the written records may contain some mistakes due to the carelessness or injustice of its reporters, while the video may be more accurate and convincing.

Another strongpoint of video is that it can be perceived simply by visual signals, from which people mainly get information in their daily lives, and therefore this method is more natural than written records. Everyone, ranging from a babbling child to an old grandpa, is able to get some information from the video just as they do during their daily lives, regardless of their literate ability. While the written record, no matter how easily it is represented, requires literacy of its readers, and a newspaper or book means nothing to an illiterate person. In addition, video is much easier to comprehend for people all over the world. For instance, an American can grasp nothing about a story written in Chinese unless s/he has learnt such a foreign language. However, s/he can absolutely understand something about a video recorded in China, although s/he may be confused with the language spoken in the video.

While video is certainly not superior to written recorders in all aspects, its limitations determine that the written record will not be replaced at least at present. The first disadvantage of video is that it is much more inconvenient and expensive. Video must be recorded on the spot, namely, when an event happens to you, you cannot record it unless you have a camera at hand. However, even though you haven’t paper and pencil either, you are still able to recall it to record based on your remembrance.

Therefore, for those who can’t afford a handy camera or who are unwilling to bring it anytime anywhere, the written records may be the easiest form available. Further, another weakness of video is that its cost is too high and its correspondingly high-quality record may be beyond people‘s requirement. The cost of making a written report is much less than that of manipulating a video. Also, every morning we may browse a newspaper to know what happened throughout the world, and the simple report, which may only consume us a few seconds, meets our needs of curiosity; we needn’t the accuracy and vividness of video, which may be more time-consuming.

GRE写作高分范文:技术与学习的矛盾

GRE写作题目:

Although innovations such as video,computers,and the Internet seem to offer schools improved methods for instructing students,these technologies all too often distract from real learning.

尽管诸如电视、电脑和互联网这样的发明似乎给学校教育提供了进步的手段,但是所有这些技术往往也是在偏离真正的学习。

GRE写作题库范文:

Nowadays there is a growing concern about the role that innovations have played in the field of learning. While most people think that innovations benefit learning process in various ways,different opinions arise that these technology advancements actually distract students from real learning. On balance,according to my personal observation,whether innovations can be beneficial or detrimental to real learning depends on the students and the teachers,not on these innovations themselves.

To begin with,technological innovations do help teaching and learning in various ways.With the aid of these technologies,the process of teaching and learning can be shorter and easier than before. For instance,if a student want certain published papers of an academic discipline,he/she may look through considerable catalogs to find the ones he/she needs. However,with the help of Internet innovation,at present most of these papers are published online. Consequently,to find certain paper the procedure is much easier and shorter,the students just type the key words and other information of the paper,and then the system will search the database,and the papers are there waiting for them. As this new approach can save a lot of time for the students,he/she could have more time reading the papers and absorbing the knowledge rather than checking and looking for the papers that could be a waste of his/her time. This example aptly illustrates how technology advancement benefited the students and their learning process.

Secondly,while innovations can help learning in various ways,it is more important that the central role of the pursuit for knowledge and wisdoms are maintained. What real matters is not the approach but the purpose of learning. In India,where modern technologies are less applied to the learning process than in the US and other developed countries,still a lot of distinguished students achieved their academic goal with their hard work and desires to knowledge. In the US,where the software engineering students are given the most advanced facilities and apparatus for their learning and research,however,it is wildly accepted that they are far less outstanding compared to the Indian students of software,who may share computers in groups. From this comparison we can see that the real and core push of learning is the desire for knowledge,not the help of innovations.

In addition,if not guided properly,the technology advancement might inhibit learning.In other words,innovation can distract the students from real learning than helping them. It is obvious that a computer can help students of science to calculate mathematical equations but can also be used for recreation such as net surfing or computer games. It is highly possible that these students can spend more time and energy on recreations rather than learning when using a computer. Thus,learning is inhibited. Under this circumstance,guidance and restrictions are needed to ensure the right use of innovations for learning,or the consequence may be on the contrary to the students and teachers' desire.

GRE作文

篇8:GRE写作哪些语法问题容易引发扣分

GRE写作哪些语法问题容易引发扣分?这6个语法细节不容忽视

GRE作文易错扣分语法点解读

那么,GRE写作中有哪些大家常会犯错并可能引起扣分的语法错误呢?小编为大家总结了以下5种:

GRE作文易错语法点:词性误用

“词性误用”常表现为:介词当动词用;形容词当副词用;名词当动词用等。

比如:None can negative the importance of money.

分析:negative系形容词,误作动词。

改为:None can deny the importance of money.

GRE作文易错语法点:不一致问题

所谓不一致不光指主谓不一致,还包括了单复数不一致、时态不一致以及代词不一致等。

比如:When one have money, he can do what he want to.

分析:one是第三人称单数,因此本句的have应改为has; want应改为wants, 本句是典型的主谓不一致。

改为:When one has money, he can do what he wants (to do).

GRE作文易错语法点:修饰语错位

英语与汉语不同,同一个修饰语置于句子不同的位置,句子的含义可能引起变化。对于这一点考生们往往没有引起足够的重视,因而造成了不必要的误解。

比如:I believe I can do it well and I will better know the world outside the campus.

分析:better位置不当,应置于句末。

GRE作文易错语法点:句子不完整

在口语中,交际双方可借助手势语气上下文等,不完整的句子完全可以被理解。可是书面语就不同了,句子结构不完整会令意思表达不清,这种情况常常在主句写完以后,作者又想加些补充说明时发生。

比如:There are many ways to know the society. For example by TV, radio, newspaper and so on.

分析:本句后半部分”For example by TV, radio, newspaper and so on.”不是一个完整的句子,仅为一些不连贯的词语,不能独立成句。

改为:There are many ways to know society, for example, by TV, radio, and newspaper.

GRE作文易错语法点:悬垂修饰语

所谓悬垂修饰语是指句首的短语与后面句子的逻辑关系混乱不清。

比如:At the age of ten, my grandfather died.

分析:句中“at the age of ten”只写出十岁时,但没有说明“谁”十岁时,按一般推理不可能是my grandfather, 如果我们把这个悬垂修饰语改得明确一点,读者或考官在读句子时就不会误解了。

改为:When I was ten, my grandfather died.

GRE作文语法出错回扣多少分?

GRE作文满分为6分,而其中涉及到语法拼写等文体问题的分值大致在1分左右。一般来说,数量较少的拼写错误可能会被考官直接忽略,但一些比较明显的语法错误往往会成为主要失分点。1分之差意味着作文评分掉了一个档次,原本还算是高分的4分作文直接变成了平均分水平的3分,这对于想要申请文科专业的考生来说还是比较严重的问题,这是因为许多文科院校专业对GRE作文都有较高标准,会把作文成绩作为一个重要的申请资格审核标准来看待。

语法直观反映考生的真实英语基础,这一点在GRE写作中尤为明显。小编希望上文内容能够帮助大家重视起语法问题,在写作中避免语法出错,让自己的作文得到更好的评价和得分。

GRE写作范文精选

Consciously Reconnecting

There may be times when we feel like our connection to the universe is closed. Maybe things don’t seem to be going well in our day, or our lives, or we may feel out of our element. The truth is, the universe is always there for us. We know that we create our experience with our thoughts, and this is another way we need to make a conscious decision about how we want to experience life. It is up to us to do the work of making the connection, because nobody can do it for us, though sometimes the universe may send us wake-up calls.

You can think of it as getting some fresh air. We are always breathing and the air is always around us, surrounding us, moving through us. But we may need to step outside of where we are in the moment—physically, mentally, or emotionally—and make the conscious choice to take a deep breath in order to feel the air coming in and going out. Whether this means stepping outside physically or merely shifting our thoughts, it is only our perception that changes; the air remains the same.

It is just as easy to reconnect with the universe. Using the same technique as a breath of fresh air, a deep breath can bring us back to our center. As we inhale, we fill our bodies with the oxygen needed to replenish our most basic physical needs, allowing the air to circulate within us. Exhaling, we release the stale, the used, the potentially toxic air, removing any blocks that may keep us from going deeper into the stillness that lies at our center where we connect to the universe. Feeling closed off does not need to be a negative experience. When we become conscious of it, we can think of the wholeness of a closed circuit, which allows electricity to connect and flow properly. Our bodies work the same way, and when we make that connection in our minds, it can help bring us back to the connection we seek.

GRE写作范文精选

“The video camera provides such an accurate and convincing record of contemporary life that it has become a more important form of documentation than written records.”

According to the speaker, the video recording is a more important means of document hag contemporary life than a written record because video recordings are more accurate and convincing. Although I agree that a video provides a more objective and accurate record of an event's spatial aspects, there is far more to document ha life than what we see and hear. Thus the speaker overstates the comparative significance of video as a documentary tool.

For the purpose of documenting temporal, spatial events and experiences, I agree that a video record is usually more accurate and more convincing than a written record. It is impossible for anyone, no matter how keen an observer and skilled a journalist, to recount ha complete and objective detail such events as the winning touchdown at the Super Bowl, a Ballanchine ballet, the Tournament of Roses Parade, or the scene at the intersection of Florence and Normandy streets during the 1992 Los Angeles riots. Yet these are important events in contemporary life the sort of events we might put ha a time capsule for the purpose of capturing our life and times at the turn of this millennium.

GRE写作范文精选

题目:

The function of science is to reassure; the purpose of art is to upset. Therein lies the value of each.

科学的作用是解惑;艺术的目的是创新。只有这样他们才各得其所。

正文:

Science and art are two of the most glorious fields in which numerous people have made their great contributions. As the society develops, people concern more about the function of science, of art and of other realms. Some may argue that the function of science is to reassure, and the purpose of art is to upset, however, as far as I am concerned, science and art have more significant values than just to reassure or to upset people.

The main function of science is to propel the development of human society and to provide people the power to understand the nature and ourselves. In the primordial days of the human history, when the conception of science first emerged, science was to answer people's questions and to satisfy people's curiosity towards myriad mysterious phenomenon. If we understand the science in such way, we can't see clear differences between the inchoate religion and the inchoate science, because, the functions of both of them are nearly the same, and both contain totally absurd theories if one studies them today. One may agree that in that period of time, science was largely to reassure people's fear towards the mysteries just as what religions try to do.

However, the development of science finally makes it an important tool for us to understand the nature and to change the nature in our favor. The understanding of electricity expels the old thought that the thunder is a sign indicating that the god is angry. The advancement achieved in medicine greatly elongate human's life, and nowadays people no longer depend on certain rituals to give them health. Discoveries and inventions alike have transformed our society into the nowadays form, and provide us great power to determine our future. If science is only to reassure us, how can we achieve the feats we have made through our history? As Francis Bacon once said, “Knowledge is power”, the true function of science is to give us the power to conquer the difficulties we confront.

篇9:GRE数学备考细节提点

GRE数学备考细节提点 少用计算器多心算有助提速提分

过度依赖计算器会降低解题速度

计算器虽然能够帮助考生提高计算的正确率,但却并不一定能提升解题速度。如果考生过度依赖计算器,无论多么简单的计算工作都使用计算器,那么不仅无法提升速度,反而会因此花费更多时间,降低解题速度。诸如14.这样简单的计算,心算一秒可得的答案用计算器反而更久。因此,心算能力是十分必要的,面对简单计算,考生还应以心算为主。

使用计算器容易出现输入错误

有些考生使用计算器更多的是为了避免心算过程中的错误。但殊不知使用计算器同样存在犯错的可能性,在巨大的考试时间的压力之下,考生很容易在使用计算器的时候因为输入了错误的数据而出错。特别是对于不习惯使用键盘,不熟悉数字按键的考生来说,因为输错数字而算错的情况时有发生。而心算,虽然也存在算错的可能性,但在面对巨大的考试压力时,还是更为可靠的计算方法。

粗略计算更省时

GRE数学中,并不是所有题目都需要仔细计算出数据才能解题,有些题目,求取的是数据的范围,往往只要做一些大致的粗略计算再加上一点预估能力,就能得到正确结果。面对这类题目,使用计算器的效果远不如心算。比如:50200的15%是多少?如果使用计算器,考生往往需要花费至少5-10秒的时间才能得出答案,而这个准确的数据也不是解题必须的要求。而通过粗略计算,50000.5%=7500,那么结果应该是稍多于7500一点,这样心算的过程,往往只需要不到5秒的时间,无形中就能节省许多时间。

备考GRE数学的基本考点

备考GRE数学一、高中知识

各种三角诱导公式,和,差,倍,半公式与和差化积,积化和差公式,平面解析几何。

备考GRE数学二、数学分析

极限,连续的概念,单变量微积分(求导法则,积分法则,微商),多边量微积分及其应用,曲线及曲面积分,场论初步。

备考GRE数学三、微分方程

基本概念,各种方程的基本解法。

备考GRE数学四、线性代数

普通代数,艾森斯坦因法则,行列式,向量空间,多变量方程组解法,特征多项式及特征向量,线形变换及正交变换,度量空间。

备考GRE数学五、初等数论

欧几里得算法,同余式的相关公式,欧拉-费马定理。

备考GRE数学六、抽象代数

群论及环域的基本概念及运算法则。

说明:抽象代数的内容最近几年越来越多,今年考试中考到了极大理想。还好我在做REA的题目的时候碰到了高斯整环的题目,所以回去好。大家要认真准备这一部分的内容。

备考GRE数学七、离散数学

命题逻辑,图论初步(基本概念,表示法,邻接and关联距阵,基本运算定理如V+F-E=2),集合论(注意了解一下偏序的概念)。

说明:逻辑的题目比较简单,也就是命题逻辑的基本运算,最多再加上真值表,随便找一本离散数学的书看看基本概念就行了。集合论的题目也比较简单。不过由于系里面没有开图论的课,所以大家还是好好看书。

备考GRE数学八、数值分析

高斯迭代法,插值法等基本运算法则。

说明:内容很少,我考试的时候没见过。

备考GRE数学九、实变函数

可数性概念,可测,可积的概念,度量空间,内积等概念。

备考GRE数学十、拓扑学

邻域系,可数性公理,紧集的概念,基本拓扑性质。

说明:重点,近几年的分量越来越大。不过据说考过foundamental group,大家还是好好看看书。

备考GRE数学十一、复变函数

基本概念,解析性(共厄调和的概念),柯西积分定理,Taylor&Laurent展式(重点),保角变换(非重点),留数定理(重点)。

说明:学过复变就行了,一定要记住基本公式。

备考GRE数学十二、概率论与统计

古典概型,单变量概率分布模型,二项式分布的正态近似。

说明:一般来说很简单。统计方面不用担心,不会有难题,所以不用专门找书看。

GRE数学怎么复习拿高分

首先,应当把数学的基本词汇掌握住,否则做题没有用处。数学真正比较难的地方就是一些专业词汇。

其次,要用摸考的规格来复习数学,不应当词汇题是用摸考的考法,到了数学就很无所谓的样子。记住,尽管数学比较简单,但是它的要求有高。

再者,注意总结,数学里边有很多小的陷阱,我做题的时候有一个感觉,就是数学考试和我们平时的考试不一样,更像一个智力测验,有时候需要转弯,这样的地方不多,总结一下,刻意的避开。

另外、要注意在做数学的时候,不要想错几个能得满分,要想怎么样才能全都做对,取法呼上仅得其中。

最后、有人总结了一些难题,有的是超难的题,有时间就看,没时间就不看,看了看不懂,不要慌,这种题处了根本就是小概率时间。

GRE数学详解单位转化问题

首先,如果考到不同度量衡之间的转换,题目往往会告诉我们转换的比例。比如说《GRE官方指南 – 第十二版》中第156页的第28题,题目中使用的单位是inches, 而在问题中使用的单位是kilometers,涉及到了不同度量衡之间的转换。

这道题目的末尾处就明确写出了 (1 kilometer is approximately 3.9×104 inches.) 所以对于这类转换大家无需担心,只需根据题目数据细心转换即可。

其次,要想GRE数量掌握单位转换相关题目,必须掌握的就是同一度量衡内单位的转换,比如说最常考到的就是hour – minute – second之间的转换,此时尤其要注意的就是1 hour = 60 minutes,而不是 = 100 minutes,经常有同学做题时一时大意就会转换错误。

另外一个常考的就是km – m – cm之间的转换,1km = 1,000m, 1m = 100cm,以及kg – g – mg之间的转换,1kg = 1,000g, 1g = 1,000mg。比如说2012年2月份就考到了kg与mg之间的转换,题目告诉了我们一种东西1kg的价钱,让我们求这种东西600mg的价钱是多少。

此时我们就需要知道1kg = 1,000g = 1,000,000mg。另外由于GRE是美国考试,所以题目中时常也会遇到美制度量衡的单位,比如说英尺 (feet)和英寸 (inch),1 feet = 12 inches,1 feet2 = 12×12 inch2 = 144 inch2,这些转换都是我们需要知道的。

GRE数学复习计划的制定方法

要说到GRE数学,说难不难,说简单也并不简单。虽然很多时候,已经掌握了一定的新GRE数学基础知识,但是在做题的时候,但是复习到什么程度却没有计划。

先是看了把相关书籍里介绍数学考试中用到的基本概念和术语,特别是术语的中英翻译部分弄清楚。其实中国考生在做数学时的很大障碍就是题目看不懂,术语不明白。比如,有一道题目提到了reciprocal(倒数),看不懂题就就是最大的问题。

有了基本概念和了解了一些难题以后,就可以开始做题目了。数学题目不用做很多,看个人情况,有的基础好的做一、二套题目后就找到感觉了,有的人稍微慢一点。笔者是在水平测试前大概做了5,6套数学题,然后从开始水平测试后,每套题目的数学都做了一下。

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