2013年12月03 SAT官方每日一题-川外培训官方网站

2013年12月03 SAT官方每日一题

2013-12-08 16:33 | 编辑：川外教育　　来自：未知　

导读：考试类型: Mathematics Standard Multiple Choice Read the following SAT test question and then click on a button to select your answer. There are students in a biology class, and only of them are seniors. If juniors are added to the class, h

考试类型: Mathematics > Standard Multiple Choice

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

There are students in a biology class, and only of them are seniors. If juniors are added to the class, how many students in the class will not be seniors?

A. n minus 3

B. n minus 2

C. n minus 1

D. n + 1

E. n + 2

正确答案:D

解析:

At first, there are students in the class, and of them are seniors. It follows that initially n minus 6 students are not seniors. If juniors are added to the class, there will be n minus 6 + 7 , or n + 1 , students in the class who are not seniors.