2014年7月6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.

　　The table above shows the attendance at the home games of the Central High School football team. If the median attendance for the five games was, and no two games had the same attendance, what is the greatest possible value for?

　　(A)

　　(B)

　　(C)

　　(D)

　　(E)

2014年7月6日SAT考试官方每日一题答案：B

解析：

The median of five numbers can be found by putting the numbers in increasing order and picking the middle, or third, number from the list. Putting the four numbers you know in increasing order produces the following list:

Thus, if is less than or equal to , the list of the numbers in increasing order will be

In either case, the median will be . However, if is greater than , the list of numbers in increasing order will be

In these cases, the median will be either or . Since you know that the median is , it must be true that is less than or equal to . Also, since no two games had the same attendance, the number cannot be equal to . Therefore, the greatest possible value of is .

2014年7月7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.

　　When he was five years old, the boy scribbled on the bedroom wall with a permanent marker, leaving an ------- mark that would still be there even after he grew up and moved away.

　　(A) interchangeable

　　(B) indelible

　　(C) ostensible

　　(D) eradicable

　　(E) untenable

2014年7月7日SAT考试官方每日一题答案：B

解析：Choice (B) is correct. It makes sense to describe a mark made by a permanent marker as “indelible,” or unable to be erased or removed.