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2011职称英语考前每日一练[理工类B级-第38期]

2011-01-18 13:16 来源:正保会计网校 打印 | 收藏 |
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  第2部分:阅读判断(第1~7题,每题1分,共7分)

  下面的短文后列出了7个句子,请根据短文的内容对每个句子做出判断:如果该句提供的是正确信息,请选择A;如果该句提供的是错误信息,请选择B;如果该句的信息文中没有提及,请选择C。

Waving With Light

  In the Sierra Madre mountain range of west central Mexico, the native Huichol people live much the way their ancestors did--without electricity. That’s because it’s too expensive to string power lines to the remote mountain areas where they live. To help support themselves, the Huichol create beautiful artwork. They sell their art in cities hundreds of miles away from their villages. And without electricity--at home or on the road, they can only work during daylight hours. When it gets dark, they must stop whatever they’re doing.

  Now, a team of scientists, designers, and architects is using new technologies to provide the Huichol with light after the sun sets.The scientists’ technique involves weaving tiny electronic crystals into fabrics that can be made into clothes, bags, or other items.

  By collecting the sun’s energy during the day, these lightweight fabrics provide bright white light at night.Their inventors have named the fabrics “Portable Lights.” Portable Lights have the potential to transform the lives of people without electricity around the world, says project leader Sheila Kennedy.

  "Our invention," Kennedy says, "came from seeing how we could transform technology we saw every day in the United States and move it into new markets for people who didn't have a lot of money."

  At the core of Portable Light technology are devices called high-brightness light-emitting diodes,or HB LEDs.These tiny lights appear in digital clocks,televisions,and streetlights.

  LEDs are completely different from the light bulbs.Most of those glass bulbs belong to a type called incandescent lights.Inside,electricity heats a metal coil to about 2,200 degrees Celsius.At that temperature,bulbs give off light we can see.

  Ninety percent of energy produced by incandescent lights, however, is heat——and invisible.With all that wasted energy, bulbs burn out quickly.They are also easily broken.

  LEDs,on the other hand,are like tiny pieces of rock made up of molecules that are arranged in a crystal structure.When an electric current passes through an LED,the crystal structure produces light.Unlike incandescent bulbs, they Can produce light of various colors.Within an LED, the type of molecules and their particular arrangement determines what color is produced.

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学员:chuhero 感谢周涵老师,职称英语过了。我觉得应该在这里跟老师说声谢谢,老师的讲课很实用,针对性强,是很有学习价值的课程,如果你想通过职称英语考试,就听周老师的课程吧。

学员:王仁芝 我去年7月开始差不多从零学起,坚持到考试,考了72分,十分感谢老师及网校的辅导!

学员:lilizhangx 职称英语通过了!毕业10年了,没怎么接触英语,跟着周涵老师学习,一次通过!

学员:张洪杰 首先感谢周涵老师,好多年没有学习了,经过老师的讲解顺利过关,这已经出乎我的预料,真的很激动,终于没让老师们失望,通过了,很高兴。

学员:xsqxxlxzj 十多年没有学习过英语了,通过职业培训教育网3个多月的学习,83分通过职称英语综合C级考试,非常感谢周涵老师,谢谢您!

学员:best888zhou 毕业以后就没有翻过英语了,丢了有七年了,虽然以前基础还不错,但这次真的是没有信心,过年后开始复习,用了差不多一个月的时间,B级综合考了80分,很开心,谢谢周涵老师的细致讲解!

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