题目内容：

    One day, a teacher entered his classroom and gave his students a surprise test. He walked around the classroom and handed out the question papers with the text facing downwards.

Once he had given them all out, he asked his students to _______ the page and begin. To everyone's _______ , there were no questions, but just a black dot in the center of the _______ .

The teacher saw the _______ on everyone's face and said, "I want you to write what you _______ there. You have three minutes to finish this." The confused students got started on the _______ task. After three minutes, the teacher _______ all the answer papers and started reading each one of them. All of them, with no _______ , described the black dot and tried to explain where it was on the paper.

After each paper had been _______ , the classroom was silent. The teacher began to ________ .I am not going to grade you according to this. I just wanted to give you something to ________ .No one wrote about the white part of the paper, Everyone ________ on the black dot, and the same thing ________ in our lives, we have a piece of white paper to enjoy, but we always focus on the dark spots. Our ________ is a gift filled with love and care. We always have reasons to celebrate-friends that help us or jobs that support our lives. However, we keep focusing only on the dark spots-the health problems, the lack of money or the bad relationships with other people. The dark spots are really ________ , but they are very small. Take your eyes away from the black spots in your life. Enjoy each moment that life gives you. Be happy and live a positive life!"

1.A.read B.set C.turn D.check

2.A.delight B.surprise C.sadness D.disappointment

3.A.blank B.picture C.page D.text

4.A.symbols B.mash C.appearances D.expressions

5.A.remember B.see C.imagine D.desire

6.A.unusual B.common C.boring D.important

7.A.chose B.divided C.corrected D.collected

8.A.exception B.means C.doubt D.attention

9.A.answered B.counted C.read D.written

10.A.complain B.explain C.question D.reply

11.A.prefer to B.make up C.work out D.think about

12.A.depended B.lay C.focused D.agreed

13.A.happens B.appears C.remains D.develops

14.A.family B.life C.friendship D.heart

15.A.exciting B.interesting C.strange D.annoying