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SAT考试官方真题每日一题解析，此次整理2014年4月18日-4月19日SAT考试官网每日一题汇总。希望对大家备考SAT考试有所帮助。

2014年4月18日SAT真题

　　Writing > Improving Sentences 改进句子

　　Part or all of the following sentence is underlined; beneath the sentence are five ways of phrasing the underlined material. Select the option that produces the best sentence. If you think the original phrasing produces a better sentence than any of the alternatives, select choice A.

　　Mexican painter Frida Kahlo drew inspiration from her Mexican heritage, where she incorporated native and religious symbols into her work.

　　(A) where she incorporated

　　(B) in which she incorporated

　　(C) incorporated

　　(D) incorporating

　　(E) therefore, she incorporated

2014年4月18日SAT考试官方每日一题答案：D

解析：Choice (D) is correct. It avoids the error of the original by eliminating the relative pronoun “where,” which does not logically refer to anything else in the sentence, and by reducing the needlessly wordy “she incorporated” to “incorporating.”

2014年4月19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.

　　In the-plane, the graph of the line with equationintersects the graph of the quadratic functionin exactly one point. What is the value of?

　　(A)

　　(B)

　　(C)

　　(D)

　　(E)

2014年4月19日SAT考试官方每日一题答案：B

解析：The graph in the -plane of the quadratic function is a parabola. If the graph of the line with equation intersects the graph of this parabola in exactly one point, that point must be the vertex of the parabola, and the -coordinate of the point must be . The graph of intersects the -axis at and , so the -coordinate of the vertex of the parabola is halfway between and on the -axis at . Thus the -coordinate of the vertex is . Therefore, if the graph of the line with equation intersects the graph of the quadratic function in exactly one point, the value of must be .