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  WhyBlueLEDLightsWontheNobelThe2014NobelPrizeinphysicswenttothreescientistswhogavelightingabigchangebyinventingblueLEDlights.Abigchangeinlightingefficiencyisunderwayaroundtheworld.SaveandgreenLEDsuselessene

  Why Blue LED Lights Won the Nobel

  The 2014Nobel Prize in physics went to three scientists who gave lighting a big change by inventing blue LED lights.A big change in lighting efficiency is under way around the world.

  Save and green

  LEDs use less energy than other forms of lighting.A typical LED bulb(灯泡) can produce around 83lumens per watt-a measure of how much brightness you can get from a unit of electrical power-much more efficient than other lighting facilities.

  LEDs produce light by passing electric current through a semiconductor,while traditional bulbs pass current through a wire.The wasted heat energy is chiefly why traditional bulbs are so much less efficient.

  LEDs also last about 30times longer than traditional bulbs,and many LED bulb products promise up to 25,000hours of use-more than 17years if you used one for about four hours a day.

  Lighting the world

  The lighting transformation is not only in homes.LEDs are also being used for street lights,public holiday and decorative displays,commercial buildings,and other large energy users.

  Car lighting is another application where LEDs are making progress.LEDs used to be used only for daytime running lights,but now many new cars have LED headlights for night-time use.

  LEDs also hold promise for bringing light to the more than 1.5billion people around the world without access to electricity,the Royal Swedish Academy of Sciences noted.Indeed,several proposed solutions to energy poverty include the distribution of LED lights,particularly solar-powered ones.

  Digital displays

  Without blue LEDs,the world wouldn't have back-lit smart phones,TV and computer LCD screens,blu-ray(蓝光) players,many forms of lighting,and countless other products.

  In the electronics industry,LEDs provide back lighting for LCD screens in many smart phones,laptops,and televisions.The LEDs are more energy efficient and allow for very t

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2020-05-31 22:03
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韩雅华

  81.result82.Compared 83.used 84.Apart/Aside 85.promise

  86.screens87.more 88.potential 89.Conclusion 90.impact/influence/effect

  81.result信息提取题.根据WhyBlueLEDLightsWontheNobel部分中的:The2014NobelPrizeinphysicswenttothreescientistswhogavelightingabigchangebyinventingblueLEDlights.可知"蓝色发光二极管"获得诺贝尔物理学奖的原因-它为照明领域的发展带来了根本性转变.resultin的意思是:引起,导致.故该处填result.

  82.Compared信息转换题.根据Saveandgreen部分中的:LEDsproducelightbypassingelectriccurrentthroughasemiconductor,whiletraditionalbulbspasscurrentthroughawire.Thewastedheatenergyischieflywhytraditionalbulbsaresomuchlessefficient.可知与其他形式的照明相比,LED的效率更高,因为它们传递电流的方式不同.becomparedwith的意思是:和…相比.故该处填Compared.

  83.used原词再现题.根据Saveandgreen部分中的:LEDsalsolastabout30timeslongerthantraditionalbulbs,和ifyouusedoneforaboutfourhoursaday.LED灯泡可以使用的时间是传统灯泡的30倍.故该处填used.

  84.Apart/Aside词语转换题.根据Lightingtheworld部分中的:Thelightingtransformationisnotonlyinhomes.LEDsarealsobeingusedforstreetlights,publicholidayanddecorativedisplays,commercialbuildings,andotherlargeenergyusers.可知照明改造不仅可以用于家里,LED也可用路灯照明、公共假日、装饰、商用建筑和其他大型能源用户.而apart/asidefrom的意思是:除了…之外.故该处填Apart/Aside.

  85.promise信息提取题.根据Lightingtheworld部分中的:LEDsalsoholdpromiseforbringinglighttothemorethan1.5billionpeoplearoundtheworldwithoutaccesstoelectricity.可知LED也有望给世界各地超过15亿没有用上电的人带来光明.故该处填promise.

  86.screens原词再现题.根据Digitaldisplays部分中的:WithoutblueLEDs,theworldwouldn'thaveback-litsmartphones,TVandcomputerLCDscreens,可知没有蓝光LED,世界就不会有背光的智能手机、电视和电脑液晶屏.故该处填screens.

  87.more信息转换题.根据Digitaldisplays部分中的:itbecamepossibletostorefiveto10timesasmuchdata.可知它使存储5到10倍的数据成为可能.即蓝色激光二极管可能储存更多的(more)数据.故该处填more.

  88.potential原词再现题.根据Digitaldisplays部分中的:LEDsarenowbeingexploredfortheirpotentialusestotransmit(传送)datafromtheInternetacrossopenspace,similartoWiFi.可知目前人们正在探索LED从互联网传送数据到开放的空间的潜在用途,类似于WiFi.故该处填potential.

  89.Conclusion归纳词填空.右边的内容是对文章的总结.conclusion的意思是总结.故该处填Conclusion.

  90.impact/influence/effect词性转换题.根据最后一段BecauseofLEDs'energyefficiency,usingthemfortheworld'slightingwouldaffectenvironmentalprotectioninapositiveway.可知由于LED的能源效率,所以用它们照明时会对环境产生积极的影响.affect是动词,此处填名词.haveapositiveimpact/influence/effect的意思是:对…有积极的影响.故该处填impact/influence/effect.

2020-05-31 22:04:50

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