GRE Reading Comprehension: Maggoosh-GRE阅读Maggoosh - KQ08025GPW1ATX2_N

In a freshman biochemistry class at Newton University, the teacher assigns the class only 'A's, 'B's' or 'C's. The average on the semester final for the class of 2012 was five points lower than that of the class of 2011. Therefore, the percent of students who received 'C's was greater in 2012 than in 2011.