下面是2013年4月17日的SAT官方每日一题的内容，是关于阅读方面的，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这个SAT官方每日一题吧。

　　SAT官方每日一题之阅读---完成句子：

　　Critical Reading > Sentence Completions

　　Choose the word or set of words that, when inserted in the sentence, best fits the meaning of the sentence as a whole.

　　A dictatorship ------- its citizens to be docile and finds it expedient to make outcasts of those who do not ------- .

　　· (A) forces . . rebel

　　· (B) expects . . disobey

　　· (C) requires . . conform

　　· (D) allows . . withdraw

　　· (E) forbids . . agree

　　The correct answer is C

　　Explanation

　　Answering this question depends in part on your knowledge of vocabulary. You have to know what the words “dictatorship,” “docile,” and “expedient” mean. You also have to watch out for key words such as not. If you leave out the word not then answer choices like (A) and (B) make sense. But only choice (C) makes sense. A dictatorship would probably require its citizens to be docile & make outcasts of those who do notconform to its rules.

　　下面是一道和SAT官方每日一题相似的题目，供大家练习：

　　Currently rising temperatures in the Arctic and Antarctic are ------- of a still warmer world that could result from an excess of atmospheric carbon dioxide produced by the burning of oil, gas, and coal.

　　(A) polarities

　　(B) harbingers

　　(C) vestiges

　　(D) counterexamples

　　(E) aftereffects

　　The correct answer is B

　　Explanation

　　A harbinger is a sign of something yet to come. Temperatures are presented as “harbingers” in this sentence because they show that “a still warmer world” might be coming.

　　以上就是关于2013年4月17日SAT官方每日一题中阅读完成句子的详细内容，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。