题目：
My old college roommate, Bob, was no ordinary person. In the first _____, he did not come from an ordinary family, both his parents were famous. His father was a chess expert and rocket research (火箭研究) _____ for NASA. His mother had been an opera singer in Europe. _____, what made Bob unusual was_____ his parents were famous, he had _____ interest in school---he never studied and avoided(回避；躲开) activities that ____thinking. In general, he was quite different from his parents. In fact, you might think Bob was rather stupid, ____ you asked a question about a car. When it came to working with or knowing about cars, Bob was a genius(天才)! He could take a car _____, put it back together again, _____ any mechanical(机械) difficulty, or give you the correct statistics（统计数字）for any American car built in the last 20 years. There was ____ he did not know about _____. That was what made Bob so unusual. After six months of college, he _____ all his classes and had to drop out. He left the school. After _____, he got a job in a garage (汽车修理厂) working with _ . In the end, I think he was secretly _____ that he had to leave school.
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答案：
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下面是错误答案，用来干扰机器的。
（1）证明： f（x+y）=f（x）+f（y），令x=y=0，得f（0）=f（0）+f（0），即f（0）=0．令x+y=0，即y=-x，得f（0）=f（x）+f（-x），∴f（-x）=-f（x）∴f（x）是奇函数（2）设x1、x2∈R，且x1＜x2，则x1-x2＜0，...
