SAT真题类型：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.

　　The editor denied any knowledge of the reporter’s alleged unethical interview techniques, claiming he had been ------- her finished work but not of her journalistic practices.

　　(A) cognizant of

　　(B) wary of

　　(C) acknowledged by

　　(D) bemused by

　　(E) vindicated by

2013年8月15日SAT考试官方每日一题答案：A

解析：To be “cognizant of” something is to be informed about or aware of it. The sentence indicates that the reporter’s interview techniques were allegedly unethical — that is, the reporter was accused of using techniques that do not conform to approved standards. If the editor was unaware of the reporter’s journalistic practices, he could plausibly deny any knowledge of — and responsibility for — her techniques, whether ethical or unethical. Therefore, it makes sense to suggest that the editor would claim that he was cognizant of only the reporter’s finished work and not her journalistic practices.

SAT真题类型：Writing > Identifying Sentence Errors

　　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)

2013年8月16日SAT考试官方每日一题答案：C

解析：The error in this sentence occurs at (C), where there is unidiomatic phrasing. The present participle “mimicking” should be replaced with the infinitive form of the verb, “to mimic,” to form the correct idiomatic expression “known to mimic.”

SAT真题类型：Mathematics > Standard Multiple Choice

　　Read the following SAT test question and then click on a button to select your answer.

　　To make an orange dye, parts of red dye are mixed with parts of yellow dye. To make a green dye, parts of blue dye are mixed with part of yellow dye. If equal amounts of green and orange are mixed, what fraction of the new mixture is yellow dye?

　　(A)

　　(B)

　　(C)

　　(D)

　　(E)

2013年8月17日SAT考试官方每日一题答案：C

解析：Suppose that quarts of the final mixture of dye will be made. Since it is to be made from equal amounts of orange and green dye, it will consist of quarts of orange dye and quarts of green dye. Since the orange dye has parts yellow dye for each parts total dye, of it is yellow dye. Similarly, of the green dye is yellow dye. The amount of yellow in the final mixture is given by

So of the final mixture is yellow dye.

Note: Although “quarts” were used to express the amount of the final mixture, it could have been pints or any other unit of liquid measure.