Question of the Day. Can you answer today's question? 这就是SAT考试官网collegeboard的每日一题的训练。SAT考试不像托福、雅思或者GRE、GMAT考试，会有回忆机经，因此官网上的SAT真题就显得尤为重要。SAT考试官方每日一题可以让你熟悉SAT考试的出题方向及出题规律，有很大的参考价值，是每一位SAT考生都需要的备考资料。

　　楷维留学小编为大家整理2014年1月27日-1月31日SAT考试官方每日一题解析，希望对大家备考SAT考试有所帮助。

2014年1月27日SAT真题

　　Writing > Identifying Sentence Errors 句子改错

　　The following sentence contains either a single error or no error at all. If the sentence contains an error, select the one underlined part that must be changed to make the sentence correct. If the sentence contains no error, select choice E.

　　(A)

　　(B)

　　(C)

　　(D)

　　(E)

2014年1月27日SAT考试官方每日一题答案：A

解析：The error in this sentence occurs at (A), where there is an inappropriate idiom. The idiom is “Between x and y,” not “Between x to y.”

2014年1月28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.

　　Machine, working at a constant rate, can producebolts per hour. Machine, working at a constant rate, can producebolts per hour. In terms of, how many bolts can both machines working together at their respective rates produce inhours?

　　(A)

　　(B)

　　(C)

　　(D)

　　(E)

2014年1月28日SAT考试官方每日一题答案：D

解析：Machine , working at a constant rate, can produce bolts per hour, and machine , working at a constant rate, can produce bolts per hour. Therefore, in one hour, both machines working together at their respective rates can produce bolts. It follows that in hours, both machines working together at their respective rates can produce bolts.

2014年1月29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.

　　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

2014年1月29日SAT考试官方每日一题答案：B

解析：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.