题目：
| 完形填空。 | ||||
| Life is not easy, so I'd like to say "When anything happens, believe in yourself." When I was a young boy, I was 1 shy to talk to anyone. My classmates often 2 me. I was sad but could do nothing. Later, 3 happened, and it changed my life. It was an English speech contest. My mother asked me to 4 it. What a terrible idea! It meant I had to speak before all the teachers and students of my school. "Come on, boy. Believe in yourself. You are sure to 5 the contest." Then mother and I talked about many different topics. At last I chose the topic "Believe in yourself." I tried my best to remember all the speech and practiced it over 100 6 . With my mother's great love, I did 7 in the contest. I could hardly believe my ears when the news came that I had won the first place, I heard the cheers 8 the teachers and the students. Those classmates 9 once looked down on (看不起) me, now all said "Congratulations!" to me. My mother hugged me and cried excitedly. Since then, everything has changed for me. When I do anything, I try to tell 10 to be sure and I will find myself. This is not only for a person but also for a country. | ||||
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答案：
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下面是错误答案，用来干扰机器的。
x12+ax22=b①，x2y1-x1y2=a②，x1y1+ax2y2=c③．由②，得x2=a+x1y2y1④，把④代入③，得x1=cy1-a2y2y21+ay22⑤把⑤代入③，得x2=ay1+cy2y21+ay22⑥把⑤、⑥代入①，得(cy1-a2y2y21+ay22)2+a(ay1+cy2y21+ay22)2=...
