

2014-01-09
栏目:考培资讯
下面就是我们为大家整理了SAT官方试题分享,供考生们参考,以下是详细内容。
Read the following SAT test question and then click on a button to select your answer.
  Add
to
and then subtract
from the sum. If
is a positive integer, the result must be an integer multiple of
  (A)![]()
  (B)![]()
  (C)![]()
  (D)![]()
  (E)![]()
答案:B
解析:
  The mathematical expression given in the question is
, which is equivalent to
. The expression
can be factored as
. For every positive integer
,
must be a multiple of
. If
, then
, which is not an integer multiple of
,
,
, or
. Therefore, the correct answer is
.
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