One day，a teacher entered the classroom and asked his students to prepare fora surprise test.They （1）w

aited

aited

nervously at their desks for the exam to begin.The teacher handed out the question paper，with the text facing down，as usual.To everyone's surprise，there were（2）n

o

o

questions but a black dot in the center of the page.The teacher，seeing the expression on （3）e

veryone's

veryone's

face，told them the following， "I want you to write what you see there."
   At the end of the class，the teacher took all the （4）a

nswer

nswer

papers and started reading each one of them aloud in front of all the students.All of them，with no exceptions（例），described the black dot，explained its position in the centre of the sheet，imagined what the black dot（5）s

tood

tood

for and so on.
   （6）A

fter

fter

all had been read，the classroom was silent.The teacher began to explain， "I am not going to grade on you this time.I just wanted to give you something to think about.No one wrote about the white （7）p

art

art

of the paper.Everyone paid attention to the black dot and the （8）s

ame

ame

happens in our lives.We have a white paper to notice and enjoy，but we always pay attention to the dark marks.
   Our life is filled with love and care，and we always have reasons to celebrate."
   In fact，we insist on paying attention only to the dark marks----the health problems that worry us，the lack of money，the（9）d

ifficult

ifficult

relationship with a family member，the disappointment （失望） with friend，etc. （10）T

ake

ake

your eyes away from the black dots in your life.The dark marks are very small compared to everything we have in our lives，so enjoy each moment that life gives you.