2014-06-25 14:10:25 来源: Collegeboard 责编:楷维留学指南
Question of the Day. Can you answer today's question? 这就是SAT考试官网collegeboard的每日一题的训练。SAT考试不像托福、雅思或者GRE、GMAT考试,会有回忆机经,因此官网上的SAT真题就显得尤为重要。SAT考试官方每日一题可以让你熟悉SAT考试的出题方向及出题规律,有很大的参考价值,是每一位SAT考生都需要的备考资料。
楷维留学小编为大家整理SAT考试官方真题每日一题解析,此次整理2014年6月24日SAT考试官网每日一题。希望对大家备考SAT考试有所帮助。
2014年6月24日SAT真题
Mathematics > Standard Multiple Choice 数学选择
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)![]()
2014年6月24日SAT考试官方每日一题答案:C
解析:To solve this problem, you must realize that some of the
dog owners also own cats and some of the
cat owners also own dogs. This has to be true because
is more than
, The question asks how many of the dog owners do not own cats. To solve the problem, first find the number of people who own both a dog and a cat. To do this, let
equal the number who own both a dog and a cat. Then
. (Note: Adding
and
counts
twice, so
must be subtracted from the sum to get
.) Next, the equation
can be solved for
, yielding
. Finally, the number of dog owners who own no cat is
.
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