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4月21日SAT官方每日一题吧。
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.
*For this example, the underlined parts are spread across several sentences. Read each sentence in context to determine if there is an error.
Many people have never A(heard of) Lou Henry Hoover. Of all the wives of United States Presidents since 1900, she is probably the most forgotten. She B(attended) Stanford University, where she met and married another student—a mining engineer named Herbert Hoover—and C(becoming) one of the first American women to earn a degree in geology. Together D(they began) a life of travel, adventure, and accomplishment. E(No error)
(A)
(B)
(C)
(D)
(E)
The correct answer is C
Explanation
The error in this paragraph occurs at (C), where there is an inappropriate verb tense. The verb "becoming" is not the appropriate tense to describe an event that has taken place in the past and should be replaced with the past tense "became."。
以上就是关于2015年4月21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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