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2012年11月27 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.
In a community of 
people, each person owns a dog or a cat or both. If there are 
dog owners and 
cat owners, how many of the dog owners own no cat?
A. 
B. 
C. 
D. 
E. 
adj. 许多，多种多样的
n. 倍数，并联
