无忧雅思网_雅思预测_雅思机经_雅思考试_雅思资料下载_雅思名师_2018年雅思考试时间

2014年2月24日SAT官方每日一题---数学选择

  下面是2014年2月24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。大家和无忧小编一起来看一下这个SAT官方每日一题吧。

  SAT官方每日一题之数学---选择:

  Mathematics > Standard Multiple Choice

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

  Ifs equals 1 plus (1 over 2) plus (1 over 4) plus (1 over 8) plus (1 over 16) plus (1 over 32)andt equals1 plus (1 over 2) times s, thentexceedssby

  (A)1 over 4

  (B)1 over 8

  (C)1 over 16

  (D)1 over 32

  (E)1 over 64

  The correct answer is E

  Explanation

  “texceedss” is interpreted mathematically as the value oft minus sand is evaluated as follows: 

  t minus s = (1 + (s over 2)) minus s

  = 1 + ((1 + (1 over 2) + (1 over 4) + (1 over 8) + (1 over 16) + (1 over 32)) over 2

  minus (1 + (1 over 2) + (1 over 4) + (1 over 8) + (1 over 16) + (1 over 32))

  = 1 + (1 over 2) + (1 over 4) + (1 over 8) + (1 over 16) + (1 over 32) + (1 over 64)

  minus 1 minus (1 over 2) minus (1 over 4) minus (1 over 8) minus (1 over 16) minus (1 over 32)

  = 1 over 64

  下面为大家提供一些和这些SAT官方每日一题相似的题目,供大家练习:

  What is the equation of the line parallel to thex-axis and four units above thex-axis?

  (A)x = negative 4

  (B)x = 4

  (C)y = negative 4

  (D)y = 0

  (E)y = 4

  Nice work!

  Explanation

  A line that is parallel to thex-axis and four units above thex-axis is the vertical translation of thex-axis four units upward. Since thex-axis is a horizontal line and has equationy = 0, it follows that the line parallel to thex-axis and four units above thex-axis has equationy = 4.

  以上就是关于2014年2月24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。