GRE最新练习题10-99.4.doc

GRE 最新练习题十(99.4)191SECTION 1Time-30minutes38 Questions5y = 15x = 2y1. x 5O is the center of the circle and the perimeter of AOB is 6.2. The circumference of the 12 circleKen’s monthly take-home pay is w dollars. After he pays for food and rent, he has x dollars left3. x w – x4. 13487154)2(yx5. 824yx6. 5.130102The operation  is defined for all positive numbers r and t by rt= tr2)(7. 7137 37718. ABDBCD9. (250)(492) 40,9210. x y11. The number of prime The number of primenumbers between 70 numbers between 30and 76 and 366 < x < 7y = 812. 0.85yxKLNP is a square with perimeter 128.13. MQ 4214. 1+3x23xGRE 最新练习题十(99.4)192The median salary for professional group A is $40,610. The median salary for professional group B is $40,810.15. The median salary for $40,710groups A and Bcombined16. The water level in a tank is lowered by 6 inches, then raised by inches, and then lowered by 4 inches. 218If the water level was x inches before the changes in level, which of the following represents the water level, in inches, after the changes?(A) 21x(B) (C) 216x(D) (E) 218x17. In the figure above, M, N, and P are midpoints of the sides of an equilateral triangle whose perimeter is 18. What is the perimeter of the shaded region?(A) 2(B) 3(C) 214(D) 6(E) 918. Which of the following sets of number is has the greatest standard deviation?(A) 2, 3, 4(B) 2.5, 3, 3.5(C) 1, 1.25, 1.5(D) –2, 0, 2(E) 20, 21, 21.519. If x, y, and z represent consecutive integers, and x