Question

8．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 thin displays．
Blu-ray players use blue LED lasers（激光） to read data off a digital optical disc．When these systems switched from using an infrared（红外线） laser to a blue LED laser，it became possible to store five to 10times as much data．
LEDs are now being explored for their potential uses to transmit（传送） data from the Internet across open space，similar to WiFi．Such a system could transmit a lot more data than WiFi alone．This high bandwidth is possible because LEDs can turn on and off millions of times per second．
The rise of LED lighting came at a time when people were just starting to be concerned about global warming．Because of LEDs'energy efficiency，using them for the world's lighting would affect environmental protection in a positive way．
Why Blue LED Lights Won the Nobel

The reason why blue LED lights won the 2014 Nobel Prize in physics is that they are to （81）resultin big changes in lighting．
Save and green	（82）Comparedwith other forms of lighting，LEDs are much more efficient because of the different ways they pass electric current． What's more，LED bulbs can be （83）used30 times longer than traditional bulbs．
Lighting the world	（84）Apart/Asidefrom household applications of LED bulbs，they can also be used as street lights and car headlights．
	Because of their high efficiency，LEDs，especially solar-powered ones，（85）promiseto light areas without access to electricity．
Digital displays	Many smart phones，laptops and televisions use LEDs to back-light their LCD （86）screens．
	By using blue LED lasers，blu-ray players are likely to store （87）moredata．
	People are now exploring more （88）potentialuses of LEDs such as transmitting data．
（89）Conclusion	LED lighting will have a positive （90）impact/influence/effecton environmental protection．

Answer 1

分析 本文是一篇任务型阅读，文章用了"总-分-总"的结构，开篇介绍了"蓝色发光二极管"获得诺贝尔物理学奖的原因是因为它为照明领域的发展带来了根本性转变．接下来讲述了"蓝色发光二极管"的优点：节能和绿色、点亮世界、用于电子显示．最后总结：LED灯会对环境产生积极的影响．

解答 81．result 82．Compared   83．used    84．Apart/Aside        85．promise
86．screens 87．more   88．potential    89．Conclusion   90．impact/influence/effect
81．result信息提取题．根据Why Blue LED Lights Won the Nobel部分中的：The 2014 Nobel Prize in physics went to three scientists who gave lighting a big change by inventing blue LED lights．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．result in的意思是：引起，导致．故该处填result．
82．Compared信息转换题．根据Save and green部分中的：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．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．be compared with的意思是：和…相比．故该处填Compared．
83．used原词再现题．根据Save and green部分中的：LEDs also last about 30times longer than traditional bulbs，和if you used one for about four hours a day．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Lighting the world部分中的：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．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/aside from的意思是：除了…之外．故该处填Apart/Aside．    
85．promise信息提取题．根据Lighting the world部分中的：LEDs also hold promise for bringing light to the more than 1.5billion people around the world without access to electricity．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Digital displays部分中的：Without blue LEDs，the world wouldn't have back-lit smart phones，TV and computer LCD screens，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Digital displays部分中的：it became possible to store five to 10times as much data．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Digital displays部分中的：LEDs are now being explored for their potential uses to transmit（传送） data from the Internet across open space，similar to WiFi．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Because of LEDs'energy efficiency，using them for the world's lighting would affect environmental protection in a positive way．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．have a positive impact/influence/effect的意思是：对…有积极的影响．故该处填impact/influence/effect．

点评 文章层次结构清晰，上下文联系紧密，做题时，先通读全文，熟悉各段内容，填单词的时候注意密切联系上下文，认真体会上下文之间的联系，填好之后可以代入检查核对．