2017年4年4日SAT官方每日一题---数学选择.

　　下面是2015年4月4日的SAT官方每日一题的内容，是关于数学方面的，题型是数学选择。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。

　　(A) AC

　　(B) AC

　　(C) AD

　　(D) AD

　　(E) BD

　　The correct answer is B

　　Explanation

　　You can rewrite AC as AB+BC , AD as AB+BC+CD , CE as CD+DE , and BD as BC+CD, and then consider the five answer choices.

　　The first answer choice is equivalent to AB+BC is less than CD . You know that AB is less than CD and that BC is also less than CD , but the sum of AB and BC might not be less than CD . Since the question asks which statement must be true, the first answer choice is not the correct answer.

　　The second answer choice is equivalent to AB+BC is less than CD+DE . This statement must be true, because AB is less than CD and BC is less than DE . Although there is no need to consider the other answer choices once you see that the second answer choice must be true, each of the remaining choices could be rewritten in the same way and you could see that they need not be true.

　　以上就是关于2015年4月4日的SAT官方每日一题中数学选择的详细内容，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。