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2012年12月17 SAT官方每日一题
考试类型: Mathematics > Standard Multiple Choice
Read the following SAT test question and then click on a button to select your answer.
A geologist has 
rocks of equal weight. If 
rocks and a -ounce weight balance on a scale with 
rocks and a 
-ounce weight, what is the weight, in ounces, of one of these rocks?
A.
B. 
C.
D. 
E. 
