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2017年6月14日SAT官方每日一题---数学选择.

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  下面是是2012年6月14日的SAT官方每日一题的内容,是关于数学方面的,题型是选择。SAT官方每日一题是collegeboard每天都会发布的题目,关于SAT考试的三个部分的各个题型。下面我们就一起来看一下这个SAT官方每日一题吧。

  SAT官方每日一题之数学---选择:

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  Mathematics > Standard Multiple Choice

  Read the following SAT test question and then click on a button to select your answer.

  In the figure above, a shaded circle with diameteris tangent to a large semicircle with diameterat pointsand. Pointis the center of the semicircle, andis perpendicular to. If the area of the large semicircle is 24, what is the area of the shaded circle?

  (A) 8

  (B) 10

  (C) 12

  (D) 14

  (E) It cannot be determined from the information given.

  The correct answer is C

  Explanation

  Segmentis a radius of the large semicircle, and it is also a diameter of the shaded circle, so the radius of the large semicircle is equal to twice the radius of the shaded circle. Letbe the radius of the shaded circle. Thenis the radius of the large semicircle, and so the area of the semicircle is. This area is given as, and so the area of the shaded circle is.

  下面是一道和SAT官方每日一题相似的题目,供大家练习:

  Ten cars containing a total ofpeople passed through a checkpoint. If none of these cars contained more thanpeople, what is the greatest possible number of these cars that could have contained exactlypeople?

  Answer Choices

  (A) One

  (B) Two

  (C) Three

  (D) Four

  (E) Five

  The correct answer is D

  Explanation

  It could not be true that each of the ten cars contained exactlypeople, as this would give a total of only. If nine of the cars contained exactlypeople, the remaining car could have no more thanpeople, for a total of only. Continuing in the same way, a pattern develops. If eight of the cars contained exactlypeople, the remaining two cars could have no more thanpeople each, for a total of only. If seven of the cars contained exactlypeople, the total number of people could be only. From the pattern, you can see that if four of the cars contained exactlypeople, and the remaining six cars contained the maximum ofpeople, the total number would be, as given in the question. Therore, at most four of the ten cars could have contained exactlypeople.

  以上就是关于2012年6月14日SAT官方每日一题中数学部分的详细内容,包括了题目和选项以及答案,后面附有一道相关的练习题。大家可以在备考SAT的过程中关注SAT每日一题的内容,这样就可以更好有不间断的练习,也就能在日积月累的过程中得到提高。

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