One day, a professor entered the classroom and asked his students to prepare for a surprise test. They waited anxiously at their desks for the test to begin. The professor1the question papers, with the text facing down as usual.2he handed them all out, he asked his students to3the page and begin. To everyone's surprise, there were no4, just a black dot (点）in the center of the page. The professor, seeing the expression on everyone's face, told them the following:
"I want you to write what you5there."
The students, thoroughly6,got started on the inexplicable (费解的）task At the end of the class, the professor7all the answer papers and started reading each one of them aloud in front of all the students. All of them, with no8 ， described the black dot, trying to explain its position in the middle of the sheet, etc. After all had been9, the classroom was silent, the professor began to explain:
"I'm not going to grade this. I10wanted to give you something to think about No one wrote about the11part of the paper. Everyone focused on the black dot, and the same happens in our12.We have a white paper to observe and13, but we always focus on the dark spots. Our life is a14given to us with love and care and we always15to celebrate: nature renewing itself every day, our friends around us, the job16our bread and butter and the miracles we see every day.17, we insist on focusing only on the dark spots: the health issues that bother us, the lack of money, the18relationship with colleagues, the19with a friend, and etc.
The dark spots are very20compared to everything we have in our lives, but they are the ones that pollute our minds.
