2014-05-20 10:02:10 来源: Collegeboard 责编:楷维留学指南
2014年5月16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.
A
number cube, with faces numbered
through
, is to be rolled twice. What is the probability that the number that comes up on the first roll will be less than the number that comes up on the second roll?
(A)![]()
(B)![]()
(C)![]()
(D)![]()
(E)![]()
2014年5月16日SAT考试官方每日一题答案:C
解析:The outcome space for this experiment is the set of all ordered pairs
where
represents the first number that comes up, and
represents the second one. Since
and
can take all the values
through
, there will be a total of
possible outcomes. The outcomes can be represented in a table as shown:

Among all the pairs
,
are pairs for which
. So
remaining pairs will have
. Notice that the number of pairs
for which
is the same with the number of pairs
for which
. Therefore the number of pairs
for which
, is
(half of
). Then the probability that
is equal to
.
2014年5月17日SAT真题
Critical Reading > Sentence Completions 完成句子
Choose the word or set of words that, when inserted in the sentence, best fits the meaning of the sentence as a whole.
The notoriously temperamental American actor Edwin Forrest was known for his ------- both on stage and off.
(A) apologies
(B) musings
(C) inequities
(D) histrionics
(E) philosophies
2014年5月17日SAT考试官方每日一题答案:D
解析:The term “histrionics” in this context refers to Forrest’s theatrical performances as well as to the emotional outbursts that likely accompanied his temper.
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