GRE-92及答案解析.doc

1、GRE-92及答案解析(总分：25.00，做题时间：90 分钟)一、SECTION 1(总题数：24，分数：25.00)（分数：2.00）(1).At the time during year X when the difference between the price of ABC common stock and the price of XYZ common stock was at its greatest, the price of XYZ common stock was approximately what percent of the price of XYZ common

2、stock and ABC common stock combined?A. 16% B. 30% C. 36%D. 42% E. 103%（分数：1.00）A.B.C.D.E.(2).At the time during year X when the aggregate price of ABC and XYZ stock was the greatest, the price of ABC stock was approximately what percent of the price of XYZ stock?A. 25 B. 60 C. 70D. 140 E. 170（分数：1.0

3、0）A.B.C.D.E.1.On the xy-coordinate plane appear four points-A, B, C and D-which have (x, y) coordinates of (-2, -1), (4, -1), (-2, 3), and (3, 4) respectively.（分数：1.00）A.B.C.D.2.For how many positive integers m100 is (m-5)(m-45) positive?A.45 B.50 C.58D.59 E.60（分数：1.00）A.B.C.D.E.3.A certain five-mem

4、ber committee must be assembled from a pool of five women - A. B, C, D and E, and three men- X, Y, and Z, what is the probability that the committee will incIude B, C, E, Y and Z?（分数：1.00）A.B.C.D.E.4.s1（分数：1.00）A.B.C.D.5. （分数：1.00）A.B.C.D.6. （分数：1.00）A.B.C.D.7.In the series N1 , N2, N3 , N1=-1, and

5、Nx+1=-1 Nx+x.（分数：1.00）A.B.C.D.8.If x+y=16, and if x2-y2=48, then x -y=A. 3 B. 4 C. 6D. 32 E. 36（分数：1.00）A.B.C.D.E.9.Two competitors battle each other in each match of a tournament with nine participants. What is the minimum number of matches that must occur for every competitor to battle every other

6、 competitor?A. 27 B. 36 C. 45D. 64 E. 81（分数：1.00）A.B.C.D.E.10.Mary read from the top of page 10 to the bottom of page 24 in 30 minutes, At this rate, how long, in minutes, will it take her to read from the top of page 25 to the bottom of page 50?（分数：1.00）填空项 1:_11. （分数：1.00）A.B.C.D.E.12.A number x i

7、s chosen at random from the set of positive integers less than 10. What is the probability that （分数：1.00）填空项 1:_13.Abuyer pays a $1.00 tax on an item that costs $10.00 after the tax is added.（分数：1.00）A.B.C.D.14.ab=(a+b)(a-b)（分数：1.00）A.B.C.D.15.p is a positive integer.（分数：1.00）A.B.C.D.16.At Florence

8、Pizza, the only slices of pizza available are plain and pepperoni, which cost $1.50 and $2. 00 respectively. Small, medium, and large cups of soda cost $1.00, $1. 50, and $1.75 respectively. Which of the following could be the total cost of two slices of pizza and two sodas? Indicate all such costs.

9、A. $ 5.00 B. $ 5.25C. $ 6.00 D. $ 6.25E. $ 7.00 F. $ 7.25（分数：1.00）17.If q workers can paint a house in d days, how many days will it take q+2 workers to paint the same house, assuming all workers paint at the same rate?（分数：1.00）A.B.C.D.E.18.Of 40 pairs of socks in a drawer, x pairs are solid white,

10、y pairs are solid gray, and more than 19 of the pairs are striped.（分数：1.00）A.B.C.D.19.（分数：1.00）A.B.C.D.20.As two wheels-A and B-roll across the ground, they both rotate at a rate of 60 revolutions per second. The radius of wheel A is 3. The radius of wheel B is 1.5.（分数：1.00）A.B.C.D.21.Dan drove home

11、 from college at an average rate of 60 miles per hour. On his trip back to college, his rate was 10 miles per hour slower and the trip took him one hour longer than the drive home. How far is Dans home from the college?A. 65 miles B. 100 milesC. 200 miles D. 280 milesE. 300 miles（分数：1.00）A.B.C.D.E.2

12、2.John bought a $100 DVD player on sale at 8% off. How much did he pay including 8% sales tax?A. $84.64B. $92.00 C. $96.48D. $99.36 E. $100.00（分数：1.00）A.B.C.D.E.23.If the circumference of the circle above is 16, and if the length of AC equals the length of BD, what is the length of AC?A. B.16 C. （分数

13、1.00）A.B.C.D.E.GRE-92答案解析(总分：25.00，做题时间：90 分钟)一、SECTION 1(总题数：24，分数：25.00)（分数：2.00）(1).At the time during year X when the difference between the price of ABC common stock and the price of XYZ common stock was at its greatest, the price of XYZ common stock was approximately what percent of the price

14、 of XYZ common stock and ABC common stock combined?A. 16% B. 30% C. 36%D. 42% E. 103%（分数：1.00）A.B. C.D.E.解析：(2).At the time during year X when the aggregate price of ABC and XYZ stock was the greatest, the price of ABC stock was approximately what percent of the price of XYZ stock?A. 25 B. 60 C. 70D

15、 140 E. 170（分数：1.00）A.B.C.D.E. 解析：1.On the xy-coordinate plane appear four points-A, B, C and D-which have (x, y) coordinates of (-2, -1), (4, -1), (-2, 3), and (3, 4) respectively.（分数：1.00）A. B.C.D.解析：2.For how many positive integers m100 is (m-5)(m-45) positive?A.45 B.50 C.58D.59 E.60（分数：1.00）A.B

16、C.D. E.解析：3.A certain five-member committee must be assembled from a pool of five women - A. B, C, D and E, and three men- X, Y, and Z, what is the probability that the committee will incIude B, C, E, Y and Z?（分数：1.00）A. B.C.D.E.解析：4.s1（分数：1.00）A. B.C.D.解析：5. （分数：1.00）A.B.C.D. 解析：6. （分数：1.00）A.B.C.

17、 D.解析：7.In the series N1 , N2, N3 , N1=-1, and Nx+1=-1 Nx+x.（分数：1.00）A.B.C. D.解析：8.If x+y=16, and if x2-y2=48, then x -y=A. 3 B. 4 C. 6D. 32 E. 36（分数：1.00）A. B.C.D.E.解析：9.Two competitors battle each other in each match of a tournament with nine participants. What is the minimum number of matches tha

18、t must occur for every competitor to battle every other competitor?A. 27 B. 36 C. 45D. 64 E. 81（分数：1.00）A.B. C.D.E.解析：10.Mary read from the top of page 10 to the bottom of page 24 in 30 minutes, At this rate, how long, in minutes, will it take her to read from the top of page 25 to the bottom of pag

19、e 50?（分数：1.00）填空项 1:_ （正确答案：52）解析：11. （分数：1.00）A.B. C.D.E.解析：12.A number x is chosen at random from the set of positive integers less than 10. What is the probability that （分数：1.00）填空项 1:_ （正确答案： ）解析：13.Abuyer pays a $1.00 tax on an item that costs $10.00 after the tax is added.（分数：1.00）A. B.C.D.解析：

20、14.ab=(a+b)(a-b)（分数：1.00）A.B.C. D.解析：15.p is a positive integer.（分数：1.00）A. B.C.D.解析：16.At Florence Pizza, the only slices of pizza available are plain and pepperoni, which cost $1.50 and $2. 00 respectively. Small, medium, and large cups of soda cost $1.00, $1. 50, and $1.75 respectively. Which of

21、the following could be the total cost of two slices of pizza and two sodas? Indicate all such costs.A. $ 5.00 B. $ 5.25C. $ 6.00 D. $ 6.25E. $ 7.00 F. $ 7.25（分数：1.00）解析：17.If q workers can paint a house in d days, how many days will it take q+2 workers to paint the same house, assuming all workers p

22、aint at the same rate?（分数：1.00）A.B.C.D.E. 解析：18.Of 40 pairs of socks in a drawer, x pairs are solid white, y pairs are solid gray, and more than 19 of the pairs are striped.（分数：1.00）A.B. C.D.解析：19.（分数：1.00）A.B.C.D. 解析：20.As two wheels-A and B-roll across the ground, they both rotate at a rate of 60

23、revolutions per second. The radius of wheel A is 3. The radius of wheel B is 1.5.（分数：1.00）A. B.C.D.解析：21.Dan drove home from college at an average rate of 60 miles per hour. On his trip back to college, his rate was 10 miles per hour slower and the trip took him one hour longer than the drive home.

24、How far is Dans home from the college?A. 65 miles B. 100 milesC. 200 miles D. 280 milesE. 300 miles（分数：1.00）A.B.C.D.E. 解析：22.John bought a $100 DVD player on sale at 8% off. How much did he pay including 8% sales tax?A. $84.64B. $92.00 C. $96.48D. $99.36 E. $100.00（分数：1.00）A.B.C.D. E.解析：23.If the circumference of the circle above is 16, and if the length of AC equals the length of BD, what is the length of AC?A. B.16 C. （分数：1.00）A.B.C. D.E.解析：