职称英语考试《理工类》章节练习题精选及
答案0517-99
1、Inventor of LED
When Nick Holonyak set out to create a new kind of visible lighting using semiconductor alloys, his colleagues thought he was unrealistic. Today, his discovery of light-emitting diodes, or LEDs, are used in everything from DVDs to alarm clocks to airports. Dozens of his students have continued his work, developing lighting used in traffic lights and other everyday technology.
On April 23,2004, Holonyak received the $500,000 Lemelson-MIT Prize at a ceremony in Washington. This marks the lOth year that the Lemelson-MIT Program at the Massachusetts Institute of Technology (MIT) has given the award to prominent inventors. \or little. It's always a surprise. \was a student of john Bardeen, an inventor of the transistor, in the early 1950s. After graduate school, Holonyak worked at Ben Labs. He later went to General Electric, where he invented a
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switch now widely used in house dimmer switches.
Later, Holonyak started looking into how semiconductors could be used to generate light. But while his colleagues were looking at how to generate invisible light, he wanted to generate visible light. The LEDS he invented in 1962 now last about 10 times longer than incandescent bulbs, and are more environmentally friendly and effective.
Holonyak, now a professor of electrical and computer engineering and physics at the University of Illinois, said he suspected that LEDs would become as commonplace as they are today, but didn't realize how many uses they would have. \don't know in the beginning. You think you're doing something important. You think it's worth doing, but you really can't tell what the big payoff is going to be, and when, and how. You just don't know, \
The Lemelson. MIT Program also recognized Edith Flanigen, 75, with the $100,000 Lemelson-MIT Lifetime Achievement Award for her work on a new generation of \sieves\that can separate molecules by size.
The Lemelson-MIT Prize has a history of over 100 years. 【单选题】
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A.Right B.Wrong
C.Not mentioned
正确答案:B
答案解析:根据主题句内容判断Lemelson-MIT奖成立的时间是1994年，因此问题句中说的“Lemelson-MIT奖有100多年的历史”与原文内容矛盾。
2、The Guitar
The Museum of Fine Arts in the eastern city of Boston recently began showing a collection of guitars. The exhibit is called Dangerous Curves: The Art of the Guitar. It shows how the instrument developed during the past four centuries. Probably no other musical instrument is as popular around the world as the guitar. Musicians use the guitar for almost every kind of music. Country and western music would not be the
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职称英语考试《理工类》章节练习题精选及答案0517-99
