职称英语 - 理工类

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Men and women dream about different things. 查看材料

A. Right
B. Wrong
C. Not mentioned

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The research on girls and computers is __________. 查看材料

A. based on a few recent articles
B. presented by one person
C. based on thousands of studies
D. not considered well grounded

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__________ 查看材料

A. injuries
B. deaths
C. arrivals
D. attacks

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A. Short history of naming hurricanes
B. Harnessing the hurricane energy
C. Difficulty in forecasting the course of a hurricane
D. Huge energy stored in a hurricane
E. Forecasting a hurricane through satellite watching
F. Different names for the same things

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Ramona is able to understand 查看材料

A. what you say
B. a pair of sunglasses
C. the listening machine
D. a visual sensor
E. who have disabilities
F. living forever in a computer

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___________ 查看材料

A. bright
B. rainy
C. foggy
D. dark

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__________ 查看材料

A. as
B. when
C. then
D. than

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__________ 查看材料

A. privately
B. usefully
C. awfully
D. personally

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请根据短文的内容，回答题。 Weaving 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&39;s because it&39;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.＜br＞ 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&39;re doing.＜br＞ Now, a team of scientists, designers, and architects is using new technologies to provide the Huichol with light after the sun sets. The scientists&39; technique involves weaving tiny electronic crystals into fabrics that can be made into clothes, bags, or other items.＜br＞ By collecting the sun&39;s energy during the day, these lightweight fabrics provide bright white light at night. Their inventors have named the fabrics "Portable (轻便的) Lights". Portable Lights have the potential to transform. the lives of people without electricity around the world.＜br＞ At the core of Portable Lights technology are devices called high-brightness light-emitting diodes (高亮度法光二极管), or HB LEDs. These tiny lights appear in digital clocks, televisions,and streetlights.＜br＞ LEDs are completely different from the light bulbs(灯泡). Most of those glass bulbs belong to a type called incandescent lights (白炽灯). Inside, electricity heats a metal coil (线圈) to about2,200 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.＜br＞ LEDs, on the other hand, are like tiny pieces of rock made up of molecules (分子) that are arranged in a crystal structure. When an electric current passes through a LED, the crystal structure produces light. Unlike incandescent bulbs, they can produce light of various colors. Within a LED,the type of molecules and their particular arrangement determine what color is produced. The Huichol don‘t use electricity because __________. 查看材料

A. it is too difficult for them to change their lifestyle
B. they know nothing about it
C. it costs too much to string power lines
D. they don"t need it

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