Free Essay

Gmat

In:

Submitted By honeyzyw
Words 2902
Pages 12
GMAT数学电子讲义

主讲:王 燚

欢迎使用新东方在线电子教材
[pic]
GMAT数学备考关键词
一、知识点:准确掌握
二、词汇、表达法:读懂题目
三、熟练:平均两分钟一道题

考试相关问题
一、时间与题量
二、题型
三、机经与换题库
四、其它

If a and b are positive integers such that a – b and a/b are both even integers, which of the following must be an odd integer?
(A) a/2 (B) b/2 (C)(a+b)/2
(D) (a+2)/2 (E) (b+2)/2
If M is the least common multiple of 90, 196, and 300, which of the following is NOT a factor of M?
(A) 600 (B)700 (C) 900 (D) 2,100 (E) 4,900

复习注意事项
*战略上重视
*初等数学的思维
*解法力求稳妥清晰
*把握好DS题型
*熟练重于技巧
推荐复习步骤
*知识点查缺补漏
*背熟词汇
*复习课上所学
*OG,及其它相关资料
*机经:www.chasedream.com
第一章 算术

1. integer (whole number): 整数
* positive integer:正整数,从1开始,不包括0。
2. odd & even number 奇数与偶数
* 凡整数均具有奇偶性,如-1是奇数,0是偶数。
* 奇+奇=偶,奇+偶=奇… 若干个整数相乘,除非都是奇数,其乘积才会是奇数… 例: If a and b are positive integers such that a – b and [pic] are both even integers, which of the following must be an odd integer?
(A)[pic] (B)[pic] (C) [pic] (D) [pic] (E) [pic] 3. prime number & composite number 质数与合数
* A prime number is a positive integer that has exactly two different positive divisors,1 and itself.
* A composite number is a positive integer greater than 1 that has more than two divisors.
* The numbers 1 is neither prime nor composite, 2 is the only even prime number.
4. factor(divisor) & prime factor 因子和质因子
* 一个数能被哪些数整除,这些数就叫它的因子(因数、约数)。
* 因子里的质数叫质因子(数)。

例1: If n=4p, where p is a prime number greater than 2, how many different positive even divisors does n have, including n? (A) 2 (B) 3 (C) 4 (D) 6 (E) 8
例2: If the integer n has exactly three positive divisors, including 1 and n, how many positive divisors does n2 have? (A) 4 (B) 5 (C) 6 (D) 8 (E) 9
例3:1225有几个因子?
例:What is the greatest prime factor of 2100 - 296? (A) 2 (B) 3 (C) 5 (D) 7 (E) 11
例:A positive integer n is said to be “prime-saturated” if the product of all the different positive prime factors of n is less than the square root of n. What is the greatest two-digit prime-saturated integer?
(A) 99 (B) 98 (C) 97 (D) 96 (E) 95
5. the greatest common divisor (GCD)& the least common multiple(LCM) 最大公约数和最小公倍数

例:If M is the least common multiple of 90, 196, and 300, which of the following is NOT a factor of M?
(A) 600 (B)700 (C) 900 (D) 2,100 (E) 4,900
例:What is the lowest positive integer that is divisible by each of the integers 1 through 7,inclusive?
(A) 420 (B) 840 (C) 1,260 (D) 2,520 (E) 5,040
6. decimals & fractions 小数和分数
*相关词汇:reaccuring decimal ; terminating decimal ; numerator ; denominator ; improper fracion ; mixed number
*整数位与分位: 后面加s的是整数位(小数点前面的某位),加th或ths的是分位(小数点后面的某位),如tens是十位数,而tenth是十分位
*What is the fractional part of ….这样的表达法意为“谁的几分之几”
*小数和分数的互相转换:
例1: 0.373737…=? (将其转换成一个分数)
例2:Which of the following fractions has a decimal equivalent that is a terminating decimal? (A) 10/189 (B) 15/196 (C) 16/225 (D) 25/144 (E) 39/128
7. consecutive numbers 连续数
例1:In an increasing sequence of 10 consecutive integers, the sum of the first 5 integers is 560. What is the sum of the last 5 integers in the sequence?
(A) 585 (B) 580 (C )575 (D)570 (E) 565

例2:If n is an integer greater than 6, which of the following must be divisible by 3? (A) n(n+1)(n-4) (B) n(n+2)(n-1) (C) n(n+3)(n-5) (D) n(n+4)(n-2) (E) n(n+5)(n-6)
8. divisibility & remainder整除及余数问题
* 一个数是否能够被5整除,只要看它的最后一位(是0或5)。
* 一个数是否能够被4整除,只要看它的后两位(是否是4的倍数)。
* 一个数是否能够被8整除,只要看它的后三位(是否是8的倍数)。
* 一个数能否被3整除,取决于各位之和能否被3整除。
* 一个数能否被9整除,也取决于各位之和能否被9整除。
* 0能被所有数整除。
* 余数包括0,如24除以6,商为4余数为0。
例:1912 257的个位数字是几?
例:If s and t are positive integers such that [pic],which of the following could be the remainder when s is divided by t?
(A) 2 (B) 4 (C) 8 (D) 20 (E) 45
9. 数字问题
例:1001位数字组成的数,任意相邻的两位数字组成的数能被17或23整除,这个1001位的数字以6开头,则它的最后六位是( )
10. 算术部分的几种常用方法
*参数法
例:两个两位数个位与十位恰好颠倒,问下面哪个不能是两数之和?
A.181,B.121,C.77,D.132,E.154
解法:设两数分别为ab和ba,则(ab)+(ba)=(10a+b)+(10b+a)=11(a+b),即和必为11的 倍数,答案为A。
*代数法
*试错法
例:
□△ × △□
The product of the two-digit numbers above is the three-digit number □◇□, where □,△,and◇ are three different nonzero digits. If □×△<10, what is the two-digit number □△?
(A) 11 (B) 12 (C) 13 (D) 21 (E) 31

第二章 代数

1. Quadratic equations: 一元二次方程 ax2+bx+c=0 [pic]
但一般更常用的是因式分解法:
x2-2x-3=0 (x-3)(x+1)=0 x1=3, x2=-1
2. Simultaneous linear equations: 多元一次方程组
* 基本方法:消元法。
例1:3x+y=5 (1) 2x+y=4 (2) (1)-(2), 消去y, 得x=1,y=2
* 注意:并不是任何二元一次方程组都有唯一解。 例2: 3x+y=5 (1) 6x+2y=10 (2) 上述方程有无穷多组解。 因此,方程的数量须等于未知数的数量,此时多元一次方程有唯一的一组解。
3. Simultaneous quadratic equations: 二元二次方程组
一般只考如下形式:
a1x+b1y=c1 (1) a2x2+b2x+a3y2+b3y=c2 (2)
即其中一个方程为一次。这种形式等价于一元二次方程,把(1)代入(2)即可。
4. Inequalities: 不等式
*不等式部分不会像中国高考那样考推导、证明,注意两边乘以负数变号等最基本原则即可。
5. Arithmetic sequence: 等差数列 an=a1+(n-1)d sn=(a1+an)n/2 n=(an-a1)/d +1
6.Geometric sequence: 等比数列 an=a1qn-1 [pic]
当∣q∣0?
(1)x2>0
(2)x30?
(1)√x=5
(2)x3 more than < less than ≥ no less than ≤ no more than
加: + add, plus, more than; sum
减: - minus, subtract; less than; difference
乘: × multiply, times; product
除: ÷ divide; quotient
绝对值:∣…∣ absolute value
平方: X2 square
立方: X3 cube
开平方: [pic] square root
开立方: [pic] cube root
平行: ∥ parallel to
垂直: ⊥ perpendicular to

2. 数字前缀
1: uni,mono, 2: bi,di 3: tri,ter 4: tetra,quad 5: penta,quint 6: hex,sex 7: sept,hapta
8: oct 9: enn 10:dec,deka

3. 方程和函数 equation 方程 solution, root, zero 解 variable 变量 constant 常量(数) term 项 coefficient 系数

4. 数列和集合 arithmetic progression 等差数列 geometric progression 等比数列 set 集合 subset 子集 sequence 序列 term 序列中的项 inclusive 包含序列的首末项 exclusive 不包含序列的首末项

5. 排列组合与概率 permutation 排列 combination 组合 probability ,possibility 概率

6. 数论 common division 公约数 common factor 公因子 composite number 合数(质数和1 以外的自然数) consecutive integer 连续整数 digit 数字 divide 除以 divisor 因子,除数
(evenly)divisible by 可整除的 even number 偶数 factor 因子 integer 整数 irrational 无理数 least common multiple 最小公倍数 multiple 倍数,公倍数 natural number 自然数 negative number 负数 nonzero 非零 odd number 奇数 positive number 正数 prime factor 质因子 prime number 质数 quotient 商 rational 有理数 real number 实数 remainder 余数 whole number 整数 units'digit 个位数 tens'digit 十位数 hundreds'digit 百位数 two-digit number 两位数

7. 单利复利和价格 compound interest 复利 cost 成本 discount 折扣 down payment 预付款,现付款 interest rate 利率 list price 标价 margin 利润 mark up 涨价 mark down 降价 markup 毛利 profit 利润 simple interest 单利

8. 其它代数 addition 加 arithmetic mean 算术平均数 average 平均数 base 底数 closest approximation 近似 decimal 小数 base 10 notation; decimal notation 十进制 decimal point 小数点 decreased 下降后的 decrease … to… 从…下降到… decrease by … 下降了… define 定义 denominator 分母 denote 表示,代表 distinct 不同的 expression 表达式 fraction 分数 improper fraction 假分数 increased 增加后的 increase… to … 从…增加到… increase by… 增加了… in terms of 用…表达 least possible 最小值 maximum 最大值 minimum 最小值 multiply 乘 multiplier 乘数 numerator 分子 per capita 人均 power 指数 proportional to 正比于 proper faction 真分数 ratio 比率 reciprocal 倒数 reduced 降低后的 rounded to the nearest tenth 四舍五入到十分位 Successive; consecutive; in a row 连续的 tenth 十分位 tenths'digit 十分位 tie 平局 times 几倍 two digits 两个数字 twice as many A as B A是B的两倍 3/2 as many A as B A是B的3/2倍 A is 20% more than B A比B多20%,(A-B)/B=20%

9. 几何 abscissa 横坐标 acute angle 锐角 altitude 高 arc 弧 area 面积 angle bisector 角平分线 bisect 平分 center 中心 chord 弦 circle 圆 circumference 圆周长 circumscribe 外接,外切 clockwise 顺时针 concentric circle 同心圆 cone 圆锥 congruent 全等的 coordinate 坐标 counterclockwise 逆时针 cube 正方体 cylinder 圆柱 decagon 十边形 degree 角度 diameter 直径 diagonal 对角线 dimension 大小,维度 distance 距离 due north 正北方 equilateral triangle 等边三角形 face 面 height 高 hexagon 六边形 hypotenuse 斜边 isosceles triangle 等腰三角形 inscribe 内接,内切 intersect 相交 length 长度 median of a triangle 三角形的中线 mid point 中点 number lines 数轴 obtuse angle 钝角 octagon 八边形 ordinate 纵坐标 overlap 交叠 parallelogram 平行四边形 pentagon 五边形 perimeter 周长 parallel lines 平行线 perpendicular lines 垂直线 plane 平面 polygon 多边形 quadrant 象限 quadrilateral 四边形 radius 半径 radian 弧度(弧长/半径) regular polygon 正多边形 rectangular solid 长方体 rectangle 长方形 right angle 直角 right triangle 直角三角形 square 正方形 sphere 球 side 边 surface area 表面积 straight angle 平角 segment 线段 tangent 切线 triangle 三角形 vertex(vertices)angle 顶角

作业 If a and b are positive integers such that a – b and [pic] are both even integers, which of the following must be an odd integer?

[pic] (B)[pic] (C) [pic] (D) [pic] (E) [pic] If y≠3, and 3x/y is a prime integer greater than 2, which of the following must be true? Ⅰ. x=y Ⅱ. y=1 Ⅲ. x and y are prime integers

(A) None (B) Ⅰonly (C) Ⅱonly (D)Ⅲ only (E) Ⅰand Ⅲ What is the greatest prime factor of 2100 - 296?
(A) 2 (B) 3 (C) 5 (D) 7 (E) 11 A positive integer n is said to be “prime-saturated” if the product of all the different positive prime factors of n is less than the square root of n. What is the greatest two-digit prime-saturated integer?
(A) 99 (B) 98 (C) 97 (D) 96 (E) 95 If 1050 – 74 is written as an integer in base 10 notation, what is the sum of the digits in that integer?
(A)424 (B)433 (C)440 (D) 449 (E) 467 If P and Q are different points in a plane, the set of all points in this plane that are closer to P than to Q is
(A) the region of the plane on one side of a line
A) the interior of a square
B) a wedge-shaped region of the plane
C) the region of the plane bounded by a parabola
D) the interior of a circle A researcher computed the mean, the median, and the standard deviation for a set of performance scores. If 5 were to be added to each score, which of these three statistics would change? (A)Ⅰonly (B) Ⅱonly (C) Ⅰand Ⅱonly (D) Ⅱand Ⅲ only (E) Ⅰ,Ⅱ,and Ⅲ

|Test | Sonya's score |Mean score | Standard deviation |
|Biology physics | 90 | 84 | 2 |
| biology | 96 | 86 | 5 |
| history | 89 | 81 | 4 |
| chemistry | 88 | 85 | 3 |
| math | 80 | 88 | 4 |

The chart above shows data for five tests that Sonya took. On which of the five tests did she score highest relative to the rest of the test takers? math (B) biology (C) physics (D) history (E) chemistry Some people in New York express 2/8 as 8th Feb and others express 2/8 as 2nd Aug. This can be confusing as when we see 2/8, we don’t know whether it is 8th Feb or 2nd Aug. However, it is easy to understand 9/22 or 22/9 as 22nd Sept, because there are only 12 months in a year. How many dates in a year can cause this confusion?
(A)48 (B) 53 (C)120 (D)132 (E)144 Beginning in January of last year, Carl made deposits of $120 into his account on the 15th of each month for several consecutive months and then made withdrawals of $50 from the account on the 15th of each of the remaining months of 1ast year. There were no other transactions in the account last year. If the closing balance of Carl's account for May of last year was $2600, what was the range of the monthly closing balances of Carl's account last year?
Last year the closing balance of Carl's account for April was less than $2625.
Last year the closing balance of Carl's account for June was less than $2675.
A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
D. EACH statement ALONE is sufficient.
E. Statements (1) and (2) TOGETHER are NOT sufficient. At the beginning of a five-day trading week, the price of a certain stock was $10 per share. During the week, four of the five closing prices of the stock exceeded $10. Did the average closing price of the stock during the week exceed its price at the beginning of the week?
The stock's closing price on Tuesday was the same as its closing price on Thursday.
The sum of the stock's highest and lowest closing prices during the week was 20.
A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
D. EACH statement ALONE is sufficient.
E. Statements (1) and (2) TOGETHER are NOT sufficient. If n is a positive integer and r is the remainder when (n-1)(n+1) is divided by 24, what is the value of r?
(1) 2 is not a factor of n.
(2) 3 is not a factor of n.

A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
D. EACH statement ALONE is sufficient.
E. Statements (1) and (2) TOGETHER are NOT sufficient. 三人独立地去破译一个密码,他们能译出的概率分别为1/5,1/3,1/4, 求此密码被译出的概率。 某市共有10000辆自行车,其牌照号码从00001到10000,求偶然遇到的一辆自行车,其牌照号码中有数字8的概率。 用0,2,4,6,9这五个数字可以组成数字不重复的五位偶数共有多少个?
有5个队伍参加了足球联赛,任意两队之间都要进行主客场各一场比赛,问总共将有多少场比赛?
甲,乙,丙,丁,戊五人并排站成一排,如果乙必须站在甲的右边(甲乙可以不相邻),那么不同的排法共有多少种? 4本不同的书分给2人,每人2本,不同的分法有多少种? 两把keys,放到有5个keys的keychain中,相邻的概率为多少(分直线和环形)? 6张同排连号的电影票,分给3名男生和3名女生,如欲男女相间而坐,则 不同的分法数为多少? 有4对人,从中取3个人,不能从任意一对中取2个,问有多少种取法? 从6双不同的手套中任取4只,求其中恰有一双配对的概率。 3封不同的信,有4个信箱可供投递,共有多少种投信的方法? 3个打字员为4家公司服务,现在每家公司各有1份文件需要录入,问每个打字员都收到文件的概率? A发生的概率是0.6,B发生的概率是0.5,问A,B都不发生的最大概率? 袋中有a只白球,b只红球,依次将球一只只摸出,不放回。求第k次摸出的是个白球的概率(1≤k≤a+b)。 掷一枚均匀硬币2n次,求出现正面k次的概率。 有4组人,每组一男一女,从每组各取一人,问取出两男两女的概率? A certain roller coaster has 3 cars, and a passenger is equally likely to ride in any 1 of the 3 cars each time that passenger rides the roller coaster. If a certain passenger is to ride the roller coaster 3 times, what is the probability that the passenger will ride in each of the 3 cars?
(A)0 (B)1/9(C)2/9 (D)1/3(E)1
A gardener is going to plant 2 red rosebushes and 2 white rosebushes. If the gardener is to select each of the bushes at random, one at a time, and plant them in a row, what is the probability that the 2 rosebushes in the middle of the row will be the red rosebushes?
(A)1/12 (B)1/6 (C)1/5 (D)1/3 (E)1/2 If a committee of 3 people is to be selected from among 5 married couples so that the committee does not include two people who are married to each other, how many such committees are possible?
(A)20 (B)40 (C)50 (D)80 (E)120 How many seven-digit numbers contain the digit '7' at least once? In how many ways can seven students A, B, C, D, E, F and G line up in one row if students B and C are always next to each other?

There are 5 cars to be displayed in 5 parking spaces with all the cars facing the same direction. Of the 5 cars, 3 are red, 1 is blue, and 1 is yellow. If the cars are identical except for color, how many different display arrangements of the 5 cars are possible? (A)20 (B) 25 (C) 40 (D) 60 (E) 125 How many different 6-letter sequences are there that consist of 1 A, 2 B’s, and 3 C’s ?
(A)6 (B) 60 (C) 120 (D) 360 (E) 720 In how many distinguishable ways can the seven letters in the word MINIMUM be arranged, if all the letters are used each time?
(A) 7 (B) 42 (C) 420 (D) 840 (E)5040 A photographer will arrange 6 people of 6 different heights for photograph by placing them in two rows of three so that each person in the first row is standing in front of someone in the second row. The heights of the people within each row must increase from left to right, and each person in the second row must be taller than the person standing in front of him or her. How many such arrangements of the 6 people are possible?
(A)5 (B) 6 (C) 9 (D) 24 (E)36

1. D 2. A 3. C 4. D 5. C 6.C 7. D 8.B 9. D 10.C 11.B 12. C 13. 3/5
14. 0.3277 15. 78 16. 10 17. 54 18. 12 19. 0.2 20. 72 21. 8/33 22. 33 23. 52 24. 111 25. 0.2 26. ka-(1+2+3+...+k-1)/a+b-(k-1)
27. k/1+2+3+...2n) 28. 3/8 29. C 30.B 31. D 32. 1111111
33. 1440 34.A 35. 60 36.E 37. A

Similar Documents

Free Essay

Gmat

...GMAT GRADUATE MANAGEMENT ADMISSION TEST McGraw-Hill’s 2008 Edition James Hasik Stacey Rudnick Ryan Hackney New York | Chicago | San Francisco | Lisbon London | Madrid | Mexico City | Milan | New Delhi San Juan | Seoul | Singapore | Sydney | Toronto Copyright © 2007 by The McGraw-Hill Companies, Inc. All rights reserved. Manufactured in the United States of America. Except as permitted under the United States Copyright Act of 1976, no part of this publication may be reproduced or distributed in any form or by any means, or stored in a database or retrieval system, without the prior written permission of the publisher. 0-07-151120-2 The material in this eBook also appears in the print version of this title: 0-07-149340-9. All trademarks are trademarks of their respective owners. Rather than put a trademark symbol after every occurrence of a trademarked name, we use names in an editorial fashion only, and to the benefit of the trademark owner, with no intention of infringement of the trademark. Where such designations appear in this book, they have been printed with initial caps. McGraw-Hill eBooks are available at special quantity discounts to use as premiums and sales promotions, or for use in corporate training programs. For more information, please contact George Hoare, Special Sales, at george_hoare@mcgraw-hill.com or (212) 904-4069. TERMS OF USE This is a copyrighted work and The McGraw-Hill Companies, Inc. (“McGraw-Hill”) and its licensors reserve all rights...

Words: 234594 - Pages: 939

Premium Essay

Gmat

...Analysis of an Argument Questions for the GMAT® Exam This document contains all Analysis of an Argument questions used on the GMAT® exam. Each question is followed by this statement: Discuss how well reasoned you find this argument. In your discussion be sure to analyze the line of reasoning and the use of evidence in the argument. For example, you may need to consider what questionable assumptions underlie the thinking and what alternative explanations or counterexamples might weaken the conclusion. You can also discuss what sort of evidence would strengthen or refute the argument, what changes in the argument would make it more logically sound, and what, if anything, would help you better evaluate its conclusion. The following appeared as part of an annual report sent to stockholders by Olympic Foods, a processor of frozen foods: “Over time, the costs of processing go down because as organizations learn how to do things better, they become more efficient. In color film processing, for example, the cost of a 3-by-5-inch print fell from 50 cents for five-day service in 1970 to 20 cents for one-day service in 1984. The same principle applies to the processing of food. And since Olympic Foods will soon celebrate its 25th birthday, we can expect that our long experience will enable us to minimize costs and thus maximize profits.” Discuss how well reasoned . . . etc. The following appeared in a memorandum from the business department of the Apogee Company: “When...

Words: 15216 - Pages: 61

Premium Essay

Gmat

...Includes ~ ~ Online Access: 6 Computer Adaptive Practice Exams Number Properties See page 7 for details. Bonus Question Bank for 'Manhauan G MAT the new standard Learn using Superior Tools developed by Superior GMAT Instructors • Scored in 99th percentile on the GMAT • Selected by rigorous face-to-face audition •Trained 100+ hours before teaching • Paid up to 4x the industry standard The Manhattan GMAT Advantage: Sophisticated "If you're SERIOUSabout getting a GREATSCOREon the GMAT, you have to go with MANHATTAN GMAT." - Student at top 5 b-school Strategies For Top Scores produce GMAT and GMAC are registered trademarks of the Graduate Management Admission Council which neither sponsors nor endorses th"o :M.anhattanG MAT·Prep the new standard 1. DIVISIBIUTY & PRIMES In Action Problems Solutions 11 21 23 2. ODDS & EVENS In Action Problems Solutions 27. 33 35 3. POSITIVES & NEGATIVES In Action Problems Solutions 37 43 45 4. CONSECUTIVE INTEGERS InAction Problems Solutions 47 5S 57 5. EXPONENTS In Action Problems Solutions 61 71 73 PART I: GENERAL TABLE OF CONTENTS 6. ROOTS IrfActiort,;Problems So1utioQS 75 83 85 7. PEMDAS In Action Problems .Solutions 87 91 93 8. STRATEGIES FOR DATASUFFICIENCY Sample Data Sufficiency Rephrasing 95 103 9. OmCIAL GUIDE PROBLEMS: PART I Problem Solving List Data Sufficiency List 109 112 113 :M.anliattanG MAT'Prep the new standard ...

Words: 29135 - Pages: 117

Free Essay

Gmat

...GMAT 语法练习题精选 Part 1 The only way for growers to salvage frozen citrus is to have it quickly processed into juice concentrate before warmer weather returns and rots the fruit. ANS:the way is to do...; citrus是单数 Carbon-14 dating reveals that the megalithic monuments in Brittany are nearly 2,000 years older than any of their supposed Mediterranean predecessors. ANS: as old as < older than; 看指代their表示megalithic monuments 6. In virtually all types of tissue in every animal species, dioxin induces the production of enzymes that are the organism's attempt to metabolize, or render harmless, the chemical irritant. ANS: attempt to/try to do重复 Lacking information about energy use, people tend to overestimate the amount of energy used by visible equipment, such as lights, that must be turned on and off and underestimate that used by unobstrusive equipment, such as water heaters. ANS: Astronomers at the Palomar Observatory have discovered a distant supernova explosion, one they believe to be of a type previously unknown to science. ANS: 10. However much united States voters may agree that there is waste in government that the government as a whole spends beyond its means, it is difficult to find broad support for a movement toward a minimal state. ANS: there be 直接排除; 主句有may; 宾从agree后that. 11. Using accounts of various ancient writers, scholars have painted a sketchy picture of the activities of an all-female cult that, perhaps as early as the sixth century B.C., worshipped...

Words: 750 - Pages: 3

Premium Essay

Gmat

...Manhattan SIMPLE PRESENT general definitions SIMPLE PAST a specific, completed time period SIMPLE FUTURE Simple Tenses (In general, the GMAT prefers the simple tenses) express"eternal"states or frequent events future actions Progressive Tenses (ongoing,happening right now) Verbs that express general states do not normally take progressive forms Keep Verb Tenses Consistent, However, some sentences with more than one action do The Perfect Tenses: require you If an action began in the past and continues into to switch VERB verb tenses. the present (or its effect TENSE does ), use the Present (Meaning) Perfect tense. If one action in the past precedes another, and need to clarify or emphasize the time sequence, then use the Past Perfect tense. In a more subtle example, you can use the Past Progressive to describe a background event , while you use Simple Past to describe a more important event in the foreground .(语 义不在一个层级) PRESENT PROGRESSIVE PAST PROGRESSIVE FUTURE PROGRESSIVE Still In Effect… PRESENT PERFECT= HAVE/HAS + Past Participle the Present Perfect indicates either continued action or continued effect of a completed action. only to clarify or emphasize a sequence of past events. BUT if the sequence is already obvious, we often do not need Past Perfect. The Earlier A sequence of verbs with the same subject does not require Past Perfect. Rather, use Action(also indicate the Simple...

Words: 1425 - Pages: 6

Premium Essay

Gmat

...1. A “calendar stick” carved centuries ago by the Winnebago tribe may provide the first evidence that the North American Indians have developed advanced full-year calendars basing them on systematic astronomical observation. (A) that the North American Indians have developed advanced full-year calendars basing them (B) of the North American Indians who have developed advanced full-year calendars and based them (C) of the development of advanced full-year calendars by North American Indians, basing them (D) of the North American Indians and their development of advanced full-year calendars based (E) that the North American Indians developed advanced full-year calendars based 2. A 1972 agreement between Canada and the United States reduced the amount of phosphates that municipalities had been allowed to dump into the Great Lakes. (A) reduced the amount of phosphates that municipalities had been allowed to dump (B) reduced the phosphate amount that municipalities had been dumping (C) reduces the phosphate amount municipalities have been allowed to dump (D) reduced the amount of phosphates that municipalities are allowed to dump (E) reduces the amount of phosphates allowed for dumping by municipalities 3. A collection of 38 poems by Phillis Wheatley, a slave, was published in the 1770’s, the first book by a Black woman and it was only the second published by an American woman. (A) it was only the second published by an American woman (B) it was only the second that an...

Words: 587 - Pages: 3

Free Essay

Gmat

...GWD_TN_1 ------------------------------------------------------------------------------------------------------------ GWD1-Q1:D During her presidency of the short-lived Woman’s State Temperance Society (1852-1853), Elizabeth Cady Stanton, as she was a staunch advocate of liberalized divorce laws, scandalized many of her most ardent supporters in her suggestion that drunkenness should be made sufficient cause for divorce. A. as she was a staunch advocate of liberalized divorce laws, scandalized many of her most ardent supporters in her suggestion that drunkenness should be B. as she was a staunch advocate for liberalized divorce laws, scandalized many of her most ardent supporters by her suggestion of drunkenness being C. in being a staunch advocate for liberalized divorce laws, had scandalized many of her most ardent supporters with the suggestion of drunkenness being D. a staunch advocate of liberalized divorce laws, scandalized many of her most ardent supporters by suggesting that drunkenness be E. a staunch advocate of liberalized divorce laws, she scandalized many of her most ardent supporters in suggesting that drunkenness should be ------------------------------------------------------------------------------------------------------------ GWD1-Q2:B By merging its two publishing divisions, the company will increase their share of the country’s $21 billion book market from 6 percent to 10 percent, a market ranging from obscure...

Words: 7177 - Pages: 29

Free Essay

Gmat

...CR TOPIC-WISE EXERCISES (700-800 LEVEL) 1 The 700-800 Club Critical Reasoning Critical Reasoning Topic 1: CONCLUSION 1. • • • • • 2. In the United States, about $5,200 per person per year is spent on health care, while in Britain the amount is about half that. A recent study indicated that middle-aged white Americans have a significantly higher rate of diabetes and heart disease than do middle-aged white Britons. Even after eliminating from the study the lifestyle differences of diet, exercise, smoking, and drinking, the data showed that the Americans have poorer health than their British counterparts. The statements above, if true, best support which of the following assertions? Health care spending in the United States should be reduced by 50%. More expensive health care causes a higher incidence of certain diseases. The money spent on health care in the United States is not being used effectively. The average health care spending for middle-aged white Americans is probably less than the average health care spending for Americans in general. Something other than diet, exercise, smoking, and drinking must account for the difference in health for the two groups in the study. Spokesperson: In the 2006 election of the city mayor, 55% of the voters were female. All the voters were between ages 18 and 70 and 2/3 of them supported the incumbent mayor. The incumbent mayor won the election with a substantially greater number of votes than any other...

Words: 52762 - Pages: 212

Premium Essay

Gmat

...Article summary for Tom Kennedy and John Affleck-Graves on The Impact of Activity-Based Costing Techniques on Firms Performance Janetha Brown This article discusses how a management accounting system like activity-based costing (ABC) may or may not have a significant impact on a firm’s value. With the samples that are shown, it is proven that the companies that use an ABC technique outperform other companies that don’t use an ABC technique by 27% over a three year period. It also shows that using an ABC technique will add value to the firm through better cost control and asset utilization. Because it had never really been proven that an ABC process really does bring an increase in shareholder value through increased profits, it is being reviewed here. The primary purpose of this article is to see if the many documented successful case study implementations of ABC are, on average, translated into superior stuck performance. (Kennedy and Affleck-Graves, 2001, p. 20) A sample of firms that do adopt ABC and some that don’t is gathered to do a comparison of the two. Comparing the ABC adopted firms to its counterparts for three years, it is revealed they have a 61% return for the ABC adopting firms compared to 34% return for the non-adopting firms which is a 5% difference. Other factors could play a role in the superior performance but when comparing other factors between the companies, nothing significant is found to stand out. The next section discusses several difference cases...

Words: 678 - Pages: 3

Free Essay

Gmat

...      《新 GRE 核心词汇考法精析》 (再要你命 3000)  主编:陈琦 副主编:周书林 编委:陈琦,周书林,马驰,肖雪,颜余真   第 1 版 2011 年 6 月  关于本书的建议与交流,请将电子邮件发到以下信箱:gre3000words@gmail.com 高端申请咨询:premium.apply@gmail.com 本文档由陈琦和周书林 由 林共同制作完成 。未经作者授权,严禁将此文档用于商业 用途。 成 授 此 业 Made By Jason & Franklin. This Doc a cument Is Stric tly Prohibited For Commercial Purposes W ithout Authorization. c d c r 本文档由陈琦和周书林共同制作完成。未经作者授权,严禁将此文档用于商业用途。 序一 这一年,我们经历了很多变化。Chow 去香港读书了,陶睿毕业了,杨珺去美国留学了,王东东 创业了,我从新东方的北美部调岗至多语种部了。 面临新的事物,我们需要将对它本能的恐惧转化成进步的动力。在多语种部工作的这一年,自己 成长了很多。做老师只要能够管理好自己,自己多吃苦就好。做部门的工作,和大家一起做事,团队 的配合就要复杂的多,除了要多吃苦,还要敢于多承担。但是如果我们能够把每天的艰辛,痛苦,委 屈当作生活的常态时,我们的内心就会更加丰富。 感谢老 GRE,让我的青春那么美好。 新 GRE 来了,让我们洒脱的迎接它。欢迎我们“要你命 3000”团队的新成员马驰,肖雪,颜余 真。也希望我们为大家带来的《再要你命 3000》 能够为各位备考新 GRE 带来帮助。 琦叔 Jason Chen 2011-6-11 Made By Jason & Franklin. This Document Is Strictly Prohibited For Commercial Purposes Without Authorization. 序二 依稀记得当年上小学五年级的时候,学校第一次开了英语课。那时候有许多外资进入中国,大 家觉得学好英语以后可以去外企,工资也会比国企的要高。这就是当时我对为什么要学英语的全部理 解了。入了初中以后,为了面对三年后的中考,英语作为三门主课之一,贯穿了整个初中阶段。也是 在那个时候,新东方、李阳疯狂英语等培训班声名鹊起,并逐渐走入莘莘学子的学习生活中。那时的 我觉得学英文的目标就是为了应付这门课,这门考试,以期望考上一所好的高中。 后来入了高中才发现,原来高中本质上和初中没有什么两样,学习目的简单而纯粹——考出好 的分数,上一所好的大学——为此做很多的数学题,背很多自己都不甚了解的诗句,写一篇篇矫揉造 作的作文……当然, 还有背英文单词、 听英语听力、 以及练英语写作。 经历大学时代和工作的这些年, 当年死记硬背下来的内容大都已经忘得一干二净了,甚至于面对今年的高考卷,我都答不上来那些化 学生物题,唯有语文数学和英文如今还在使用。随着阅历的增长,我才逐渐发现了学习英文的意义。 英语作为国际社会的通用语, 是解读现代文明世界的密钥之一。 这句话毫不夸张地道出了现实: 中国总体情况的落后是大家深有体会的,而“西方国家”总体情况的先进也是不可否认的。每年有众 多的留学生选择去发达国家学习深造,以期能学到那些先进的思想文化与科学技术。自然而然,英语 成了每一位留学西方国家同学的必修课。这便是学习英文的基本意义——进入西方世界的通行证。...

Words: 5755 - Pages: 24

Free Essay

Gmat

...GMAT数学词汇精选 A.算术 1.整数 |integer |整数 | |even |偶数 | |odd |奇数 | |divisor |除数 | |real number |实数 | |positive whole number |正整数 | |negative whole number |负整数 | |consecutive integer |连续的整数 | |quotient |商 | |multiple |倍数 | |remainder |余数 | |prime number |质数,素数 | |prime factor |质因子,质因数 | |composite number |合数 |  2.分数 |common factor ...

Words: 702 - Pages: 3

Premium Essay

Gmat Syllabus

...Syllabus Manhattan GMAT Complete Course Contents Do a page a week → Page(s) Bird's Eye View......................................................................... 2 Do This Homework..................................................... 3 - 11 Try Easier Quant............................................ 12 - 20 Only do as needed or → wanted (and if you have time) Try Easier Verbal............................................ 21 - 29 Try Harder Quant............................................. 30 - 36 Try Harder Verbal............................................ 37 - 42 Try More IR.................................................... 43 Try More Essay............................................. 44 Page 1 of 44 Bird's Eye View of Class Attended In Class Quant Verbal Topics & Methods Sentence Correction Critical Reasoning Reading Comprehension Other IR / Essay Preparing for the GMAT Session 1 □ DS Methods & Computation Methods 2 □ FDPs 3 □ Algebra 1 4 □ Algebra 2 5 □ Word Probs 1 6 □ Word Probs 2 7 □ Geometry 8 □ Num Props 1 9 □ Num Props 2 Subj-Verb Parallelism Pronouns Arg. Structure Assumption Modifiers Verbs Evaluate Comparisons Str/Weaken Idioms etc. Evidence Short Long IR Basics Essay Review Assess Gameplan Build "Do This" Checklist At Home Quant FoM Odds After Session 1 2 3 4 5 6 x 7 x 8 x 9 x x x □ □ □ □ □ □ □ x x x x □ □ □ □ □ □ □ □ □ x x □ □ □ □ □ □ □ □ □ x x □ □...

Words: 10013 - Pages: 41

Free Essay

Gmat

...Breaking down a Long GMATPrep SC problem A student recently asked me what they should do when faced with Sentence Correction problems containing very long underlines and a “jumble” in the answer choices. Many sentence correction questions can easily be scanned vertically, in order to find differences among the answers. But in some problems, major parts of the sentence move around and the basic structure changes (for instance, an independent clause becomes dependent and vice versa). If you’re a Manhattan GMAT student, we would classify these kinds of questions as ones for which the “splits” are more challenging to identify. This week and next we’re going to analyze a couple of GMATPrep^ Sentence Correction questions that possess these characteristics. (Note: click here to read about the general process of attacking Sentence Correction questions; the techniques we discuss in this current article are to be used only when necessary.) Here’s today’s problem; set your timer for 1 minute and 15 seconds and go! More than 300 rivers drain into Siberia’s Lake Baikal, which holds 20 percent of the world’s fresh water, more than all the North American Great Lakes combined. (A) More than 300 rivers drain into Siberia’s Lake Baikal, which holds 20 percent of the world’s fresh water, more than all the North American Great Lakes combined. (B) With 20 percent of the world’s fresh water, that is more than all the North American Great Lakes combined, Siberia’s Lake Baikal has more than 300...

Words: 2072 - Pages: 9

Free Essay

Gmat

...700+ GMAT Problem Solving Probability and Combinations Questions With Explanations Collected by Bunuel Solutions by Bunuel gmatclub.com 1. Mary and Joe are to throw three dice each. The score is the sum of points on all three dice. If Mary scores 10 in her attempt what is the probability that Joe will outscore Mary in his? A. 24/64 B. 32/64 C. 36/64 D. 40/64 E. 42/64 Expected value of a roll of one dice is 1/6(1+2+3+4+5+6)=3.5. Expected value of three dices is 3*3.5=10.5. Mary scored 10 so the probability to have more then 10, or more then average is the same as to have less than average=1/2. P=1/2. Answer: B. Discussed at: http://gmatclub.com/forum/mother-mary-comes-to-me-86407.html 2. Denise is trying to open a safe whose combination she does not know. IF the safe has 4000 possible combinations, and she can try 75 different possibilities, what is the probability that she does not pick the one correct combination. A. 1 B. 159/160 C. 157/160 D. 3/160 E. 0 When trying the first time the probability Denise doesn't pick the correct combination=3999/4000 Second time, as the total number of possible combinations reduced by one, not picking the right one would be 3998/3999. Third time 3997/3998 ... And the same 75 times. So we get: [pic] every denominator but the first will cancel out and every nominator but the last will cancel out as well. We'll get 3925/4000=157/160. Answer: C. Discussed at: http://gmatclub.com/forum/4000-possible-combination-84435...

Words: 7620 - Pages: 31

Free Essay

Gmat

...Quant Mastery A Answers and Explanations Quant Mastery A Answers and Explanations ANSWERS ANd EXPLANATIONS 1. D 2. D 3. C 4. D 5. B 6. E 7. B 8. B 9. B 10. C 11. D 12. C 13. D 14. E 15. D 16. B 17. E 18. E 19. A 20. B 21. C 22. C 23. E 24. A 3 Quant Mastery A Answers and Explanations 1. (d) Nancy works 3 days per week at a rate of x dollars per day. If Nancy works more than 3 days per week, any extra days are paid at double her normal rate. Nancy worked 4 weeks with no overtime, and then worked 3 more weeks, each with y days of overtime. Which of the following represents Nancy’s total earnings over this period? ○○ ○○ ○○ ○○ ○○ 3y(7x 1 2xy) 3x 1 12y 3xy(7x 1 2) 3x(2y 1 7) 4x(y 1 8) Step 1: Analyze the Question We’ve got a wordy question stem and variables in the answer choices, so we can make this question more concrete and manageable through Picking Numbers. Step 2: State the Task We need to determine Nancy’s total earnings over a seven-week period, including four regular three-day weeks and three weeks during which she worked overtime days. Step 3: Approach Strategically We need two values, so let’s set x 5 5 and y 5 2. (Note that it’s a good idea to avoid 3 and 4 when Picking Numbers for this question, since those numbers appear in the question itself and may cause confusion later when we substitute the values into the answer choices.) There are two distinct parts of...

Words: 9319 - Pages: 38