单选题 There was an engineer who had an exceptional gift for fixing all mechanical (机械的) things. After serving his company heart and soul for over 25 years, he happily retired(退休). Several years later his company telephoned him regarding a seemingly impossible problem they were having with one of their multi-million-dollar machines. They had tried everything and everyone else to get the machine fixed, but no help.
In desperation (绝望), they called on the retired engineer who had solved so many of their problems in the past. The engineer unwillingly took the challenge. He spent a day studying the huge machine. At the end of the day he marked a small X in chalk on a particular part of the machine and proudly stated, "This is where your problem is.” Tile part was replaced and the machine worked perfectly again.
The company received a bill for $ 20,001 from the engineer for his service. They told him to make a list of his charges.
The engineer answered briefly:
One chalk mark... $ 1
Knowing where to put it... $ 20,000.

单选题 The engineer retired ______.
A. after he worked in the same company for less than 25 years
B. after he worked in different companies for 25 years
C. after he worked faithfully in the same company for over 25 years
D. after he worked heart and soul in his own company for 25 years
【正确答案】 C
【答案解析】根据短文第一段第二句:After serving his company heart and soul for over 25 years,he happily retired.可知[C]项正确。[D]干扰性最大,但根据后文他不乐意去修机器以及事后取报酬均表明这家公司并非他所有。
单选题 Several years after his retirement, the engineer's company ______.
A. bought a very advanced machine
B. had a very expensive machine out of order
C. placed an order for a very expensive machine
D. had difficulty destroying a very expensive machine
【正确答案】 B
【答案解析】根据第一段第三、四两句可知:这位老工程师退休几年后,公司请他修理一个价值昂贵、出了毛病而很多人都无法修好的机器。[D]项如把destroying误看成repairing易误选。
单选题 What we can know about the retired engineer in this text?
A. The retired engineer overcharged for his service.
B. The retired engineer happily went to examine the machine.
C. The retired engineer changed the broken part for a new one.
D. The retired engineer did find out what was wrong with the machine.
【正确答案】 D
【答案解析】由第二段可知,老人经过一天的仔细研究,查出了机器的毛病所在。但只是画出了标记,并未提到亲自换零件的事,故[C]项错误。
单选题 What would be the best title for the text?
A. Priceless Knowledge B. No Help
C. A Troublesome Machine D. A Troublesome Day
【正确答案】 A
【答案解析】老人高昂的修理费中,除了区区一美元的粉笔头儿费,知道机器的毛病所在索要了两万美元,而这一点恰恰需要的是老人扎实的业务知识。故“知识无价”是作者所要表达的主题。