A professor1 was giving a big test one day to his students. He handed out all of the tests and went back to his desk to wait.
一天,教授正在给学生们监考。他发下试卷,然后回到讲台前等待。
Once the test was over the students all handed the tests back in. The professor noticed that one of the students had attached2 a $100 bill to his test with a note saying "A dollar per point."