2015年6月6日逐日一題
標題範例:Mathematics > Standard Multiple Choice
Read the following SAT test question and then click on a button to select your answer.
Milk costs X cents per half-gallon and Y cents per gallon. If a gallon of milk costs Z cents less than 2 half-gallons, which of the following equations must be true?
(A) X-2Y+Z=0
(B) 2X-Y+Z=0
(C) X-Y-Z=0
(D) 2X-Y-Z=0
(E) X+2Y-Z=0
謎底:D
【剖析】
>>點擊檢察往期