管卫东真题第一册(第一到第八套).doc

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1、 第一套AARead the statement and the instructions that follow it,and then make any notes that will help you plan your response.Begin typing your response in the box at the bottom of the screen.The following appeared in a newspaper editorial.As violence in movies increases, so do crime rates in our citie

2、s. To combat this problem we must establish a board to censor certain movies, or we must limit admission to persons over 21 years of age. Apparently our legislators are not concerned about this issue since a bill calling for such actions recently failed to receive a majority vote.Discuss how well re

3、asoned,.etc.AIRead the statement and the instructions that follow it, and then make any notes that will help you plan your response. Begin typing your response in the box at the bottom of the screen.Since science and technology are becoming more aid more essential to modern society, schools should d

4、evote more tine to teaching science ; and technology and less to teaching the arts and humanities.Discuss the extent to which you agree or disagree with the opinion stated above. Support your views with reasons and/or examples from your own experience, observations, or reading.Math Section-Q1:A fami

5、ly-size box of cereal contains more cereal and costs more than the regular-size box of cereal. What is the cost per ounce of the family-size box of cereal?(1)The family-size box of cereal contains 10 ounces more than the regular-size box of cereal.(2) The family-size box of cereal costs $5.40.A. Sta

6、tement (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

7、(2) TOGETHER are NOT sufficient.Answer: -Q2: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 passenge

8、r will ride in each of the 3 cars?A. 0B. 1/9C. 2/9D. 1/3E. 1Answer: -Q3:If x and y are positive, is 4x 3y?(1) x y - x(2) x/y k?(1) 2x 2k = 4(2) 9x 3k = 81A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.B. Statement (2) ALONE is sufficient, but statement (1) alone is n

9、ot 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.Answer: -Q6:If x and y are positive, what is the value of x y?(1) (x2 y2) / (x + y) = 4(2) x + y = 7A. State

10、ment (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

11、) TOGETHER are NOT sufficient.Answer: -Q7:A circular mat with diameter 20 inches is placed on a square tabletop, each of whose sides is 24 inches long. Which of the following is closest to the fraction of the tabletop covered by the mat?A. 5/12B. 2/5C. 1/2D. 3/4E. 5/6Answer: -Q8:In 1997 there were 3

12、00 female employees at Company C. If the number of female employees at Company C increased by 60 percent from 1977 to 1987, by what percent did the number of female employees at Company C increase from 1987 to 1997?(1)From 1977 to 1997 the number of female employees increased by 200 percent at Compa

13、ny C.(2) In 1977 there were 100 female employees at Company C.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 suf

14、ficient.D. EACH statement ALONE is sufficient.E. Statements (1) and (2) TOGETHER are NOT sufficient.Answer: -Q9: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 probabi

15、lity that the 2 rosebushes in the middle of the row will be the red rosebushes?A. 1/12B. 1/6C. 1/5D. 1/3E. 1/2Answer: -Q10:A set of numbers has the property that for any number t in the set, t + 2 is in the set. If 1 is in the set, which of the following must also be in the set? I. -3II. 1III. 5A.I

16、onlyB.II onlyC.I and II onlyD.II and III onlyE.I, II, and IIIAnswer: -Q11:In a corporation, 50 percent of the male employees and 40 percent of the female employees are at least 35 years old. If 42 percent of all the employees are at least 35 years old, what fraction of the employees in the corporati

17、on are females?A. 3/5B. 2/3C. 3/4D. 4/5E. 5/6Answer: -Q12:If n is an integer and 2 n 7y?(1) x y + 4(2) -5x 0, then 1/(2x)+x =A. 1/(3x)B. 1/2(2x)C. 1/(x2)D. (2-1)/xE. (1+2)/xAnswer: -Q21:When Leo imported a certain item, he made a 7 percent import tax on the portion of the total value of the item in

18、excess of $1,000. If the amount of the import tax that Leo paid was $87.50, what was the total value of the item?A. $1,600B. $1,850C. $2,250D. $2,400E. $2,750Answer: -Q22:In the sequence 1, 2, 4, 8, 16, 32, , each term after the first is twice the previous term. What is the sum of the 16th, 17th, an

19、d 18th terms in the sequence?A. 218B. 3(217)C. 7(216)D. 3(216)E. 7(215)Answer: -Q23:In the xy-plane, point (r, s) lies on a circle with center at the origin. What is the value of r2 + s2?(1) The circle has radius 2.(2) The point (2, -2) lies on the circle.A. Statement (1) ALONE is sufficient, but st

20、atement (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.Answer

21、: -Q24:If w and c are integers, is w 0?(1) w + c 50(2) c 48A. 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 suffic

22、ient.D. EACH statement ALONE is sufficient.E. Statements (1) and (2) TOGETHER are NOT sufficient.Answer: -Q25: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 se

23、cond 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. 5B. 6C. 9D. 24E. 36Answer: -Q26:Running at their respecti

24、ve constant rates, machine X takes 2 days longer to produce w widgets than machine Y. At these rates, if the two machines together produce 5/4 w widgets in 3 days, how many days would it take machine X alone to produce 2w widgets?A. 4B. 6C. 8D. 10E. 12Answer: -Q27:If n = 811 8, what is the units digit of n?A. 0B. 1C. 4D. 6E. 8Answer: -Q28:For any positive integer n, the sum of the first n positive integers equals n(n+1)/2. What is the sum of all the even intege