SAT真题类型：Mathematics > Standard Multiple Choice 数学选择

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

　　For how many positive two-digit integers is the ones digit greater than twice the tens digit?

　　(A)

　　(B)

　　(C)

　　(D)

　　(E)

2013年11月21日SAT考试官方每日一题答案：A

解析：The correct answer is (A). If the tens digit is , there are  positive two-digit integers with the ones digit greater than twice the tens digit:  and . If the tens digit is , there are  positive two-digit integers with the ones digit greater than twice the tens digit:  and . If the tens digit is , there are  positive two-digit integers with the ones digit greater than twice the tens digit:  and . If the tens digit is , there is  positive two-digit integer with the ones digit greater than twice the tens digit: . If the tens digit is equal to or greater than , then the ones digits, which cannot be greater than , is not greater than twice the tens digit. Therefore, there is a total of  positive two-digit integers for which the ones digit is greater than twice the tens digit.

SAT真题类型：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.

　　A judgment made before all the facts are known must be called ------- .

　　(A) harsh

　　(B) deliberate

　　(C) sensible

　　(D) premature

　　(E) fair

解析：Getting the correct answer to this question depends almost entirely on your knowing the definitions of the five words you must choose from. Which of the choices describes a judgment made “before all the facts are known?” Such a judgment, by definition, is not deliberate, and the sentence doesn't tell us whether the judgment was “harsh” or lenient, “sensible” or dumb, “fair” or unfair. “Premature” means hasty or early. It fits the blank perfectly.