(一) Weaving with Light请根据短文的内容，回答问题。 In the Sierra Madre mountain range of

共享题干题 (一) Weaving with Light请根据短文的内容，回答问题。 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 (轻便的) Lights". Portable Lights have the potential to transform the lives of people without electricity around the world. 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. 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. 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.1.[不定向选择题]The Huichol don't use electricity because __________.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 2.[不定向选择题]To make a living, the Huichol create artwork and __________.A.sell it to tourists in their villages B.sell it in cities far away from their villages. C.display it in their village museums. D.keep it in their homes to attract tourists.

1.参考答案：C
参考解析：细节题。维克人不使用电力的原因是__________。文章第一段第二句作了解释，“主要是因为将电线连接到他们所住的远山上是很贵的”，由此可知C为正确选项。
2.参考答案：B
参考解析：细节题。为了生计，维克人创造了艺术品并__________。由关键词create定位到第一段，他们创造艺术品，并把它们卖到离村庄数百英里远的城市。因此B为正确选项。3.[不定向选择题]All of the following are disadvantages of incandescent lights EXCEPT that __________.A.they are not bright enough B.they burn out quickly C.they are easily broken D.they waste most of the energy produced

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