求翻译：A professor stood before his class of twenty senior organic biology students, about to hand out the final exam. "want to say that it's been a pleasure teaching you this semester. I know you've all worked extremely hard and many of you are off to medical schoolafter summer. So that no one gets their GPA messed up because they might have been celebrating a bit too much this week,anyone who would like to opt out of the final exam today will receive a B for the course." There was much rejoicing in the class as students got up,walked to the front of the class,and took the professor up on his offer. As the last taker left the room, the professor looked out over the handful of remaining students and asked ,"Anyone else? This is your last chance."是什么意思？

待解决 悬赏分：1 - 离问题结束还有