A professor entered the classroom and told the students about a surprise test.All students were （1） and waited for the test to begin. The professor gave the test papers to all students with text facing down at the desk. （2） he was done with （3） the test to all students,he asked them to （4） the test paper and begin.
　　Students were confused(迷惑)to see that there was just a black （5） in the center of the page.The professor told them,“I want you to （6） about what you see there.”The students were （7） confused but got started with the test. 8 the end of the class,the professor collected all answer sheets and started reading each answer from each sheet in front of all students.
　　（9） of them described about the black dot and tried to explain its position.
　　Now,profesor began to explain,“Here everyone （10）the black dot and wrote about it （11）no one wrote about the white paper.The same is （12） our lives.The white paper stands for our whole life and the black dot （13） problems in our life.
　　Our life is a （14） given to us by God,with love and care,and we always have reasons to celebrate—our friends around us,the job that provides us with everything we need. （15） ,we just focus on day to day problems like health issues,lack of money,problems in relationships,but we 16 sce that these problems are very （17） compared to everything we have in our lives.”
　　We should try to take eyes off our （18） nd enjoy each moment （19） life gives us.Be happy and（20）your life positively.