下面是2015年1月17日的SAT官方每日一题的内容，是关于SAT阅读方面的，题型是完成句子。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2015年1月17日SAT官方每日一题。
Choose the word or set of words that, when inserted in the sentence, best fits the meaning of the sentence as a whole.
Alvin is an exceedingly ------- person: he unselfishly ------- his friends without ever expecting anything in return.
(A) opportunistic . . supports
(B) noble . . undermines
(C) bemused . . aids
(D) caustic . . neglects
(E) altruistic . . assists
The correct answer is E
Explanation
The structure of the sentence indicates that the statement after the colon gives an example of the idea in the first part of the sentence. If Alvin is unselfish, he likely “assists,” or helps, his friends without expecting anything from them in return. And helping people without expecting anything in return is an example of being “altruistic,” or unselfishly concerned with the welfare of others.
以上就是关于2015年1月17日SAT官方每日一题的详细内容，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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