单选题Music critic: Fewer and fewer musicians are
单选题Which of the following numbers is NOT the sum of three consecutive odd integers?
单选题The top surface area of a square tabletop was changed so that one of the dimensions was reduced by 1 inch and the other dimension was increased by 2 inches. What was the surface area before these chan
单选题已知等差数列2，5，8，11，14，…，问47是其中的第几项?
单选题In an experiment, volunteers walked individually
单选题A company plans to develop a prototype weeding
单选题If m and n are positive integers, is n even?1 mm + 2 + 1 = mn2 mm + n is odd.
单选题Images from ground-based telescopes are
单选题Gortland has long been narrowly self-sufficient
单选题Which of the following most logically completes
单选题Studies of the political orientations of 1,055
单选题If x＜y＜z and y-x＞5．where x is an even integer and y and z are odd integers，what is the least possible value of z-x?
单选题The first four digits of the six-digit initial password for a shopper’s card at a certain grocery store is the customer’s birthday in day-month digit form. For example, 15 August corresponds to 1508 a
单选题If y = 2x+1, what is the value of y-x ?1 22x+2 = 642 y=22x-1
单选题What is the value of x?1 4x+1 + 4x = 3202 x2 = 9
单选题When a certain stretch of highway was rebuilt and straightened，the distance along the stretch was decreased by 20 percent and the speed limit was increased by 25 percent．By what percent was the drivin
单选题3+32+33+…+3k，k为多少时，和能够被6整除?
单选题How many positive integers n have the property that both 3n and n3 are 4-digit integers?