职称英语考试 理工类 A级 完形填空 押题 【必考】.doc

2013年理工新书(红色标题为2013年新增文章)注： +表示A级文章；*表示B即文章；其他为C级文章；二、2013年（理工A）完形填空 A级+第十三篇：Better Solar Energy Systems: More Heat, More Light（A级）+第十四篇：Sharks Perform a Service for Earths Waters（A级） +第十五篇："Liquefaction" Key to Much of Japanese Earthquake Damage（A级）第十三篇 Better Solar Energy Systems：More Heat，More Light  Solar photovoltaic thermal energy systems or PVTs, generate both heat and electricity, but until now they haven't been very good at the heat-generating part compared to a stand-alone solar thermal collector. That's because they operate at low temperatures to cool crystalline silicon solar cells, which lets the silicon generate more electricity but isn't a very efficient way to gather heat.  That's a problem of economics. Good solar hot-water systems can harvest much more energy than a solar-electric system at a substantially lower cost. And it's also a space problem: photovoltaic cells can take up all the space on the roof, leaving little rooms for thermal applications.  In a pair of studies, Joshua Pearce, an associate professor of materials science and engineering, has devised a solution in the form of a better PVT made with a different kind of silicon. His research collaborators are Kunal Girotra from ThinSilicon in California and Michael Pathak and Stephen Harrison from Queen's University, Canada.  Most solar panels are made with crystalline silicon, but you can also make solar cells out of amorphous silicon, commonly known as thin-film silicon, They don't create as much electricity, but they are lighter, flexible , and cheaper:. And, because they require much less silicon, they have a greener footprint. Unfortunately, thin-film silicon solar cells are vulnerable as some bad-newsphysics in the form of the Staebler-Wronski effect.  "That means that their efficiency drops when you expose them to light - pretty much the worst possible effect for a solar cell," Pearce explains, which is one of the reasons thin-film solar panels make up only small fraction of the market.  However, Pearce and his team found a way to engineer around the Stacbler-Wronski effect by incorporating thin-film silicon in a new type of PVT. You don't have to cool down thin-film silicon to make it work. In fact, Pearce's group discovered that by heating it to solar-thermal operating temperatures, near the boiling point of water, they could make thicker cells that largely overcame the Staebler-Wronski effect. When they applied the thin-film silicon directly to a solar thermal energy collector, they also found that by baking the cell once a day, they boosted the solar cell's electrical efficiency by over 10 percent.+第十四篇Sharks Perform a Service for Earths Waters（A级）鲨鱼有益于地球水系It is hard to get people to think of sharks as anything but a deadly enemy. They are thought to attack people frequently. But these fish perform a   valuable service for earth's waters and for human beings. Yet business and sport fishing3 are threatening their existence. Some sharks are at risk of disappearing from EarthWarm weather may influence both fish and shark activity. Many fish swim near coastal areas because of their warm waters. Experts say sharks may follow the fish into the same areas, where people also swim. In fact, most sharks do not purposely charge at or bite humans. They are thought to mistake a person for a sea animal, such as a seal or sea lion. That is why people should not swim in the ocean when the sun goes down or comes up. Those are the times when sharks are looking for food. Experts also say that bright colors and shiny jewelry may cause sharks to attack.A shark has an extremely good sense of smell4. It can find small amounts of substances in water, such as blood, body liquids and chemicals produced by animals. These powerful senses help sharks find their food. Sharks eat fish, any other sharks, and plants that live in the ocean.Medical researchers want to learn more about the sharks body defense, and immune systems against disease. Researchers know that sharks 13recoverquickly from injuries. They study the shark in hopes of finding a way to fight human disease.Sharks are important for the worlds oceans. They eat injured and diseased fish. Their hunting activities mean that the numbers of other fish in ocean waters do not become too great. This protects the plants and other forms of life that exist in the oceans. +第十五篇 “Liquefaction” Key to Much of Japanese Earthquake Damage（A级） The massive subduction zone1 earthquake in Japan caused a significant level of soil "liquefaction"2 that has surprised researchers with its widespread severity, a new analysis shows."We've seen localized3 examples of soil liquefaction as extreme as this before, but the distance and extent of damage in Japan were unusually severe," said Scott Ashford, a professor of geotechnical engineering4 at Oregon State University5. "Entire structures were tilted and sinking into the sediments," Ashford said. "The shifts in soil destroyed water, drain and gas pipelines6, crippling the utilities and infrastructure these communities need to function. We saw some places that sank as much as four feet."Some degree of soil liquefaction7 is common in almost any major earthquake. It's a phenomenon in which soils soaked with water, particularly recent sediments or sand, can lose much of their strength and flow during an earthquake. This can allow structures to shift or sink or collapse. But most earthquakes are much shorter than the recent event in Japan, Ashford said. The length of the Japanese earthquake, as much as five minutes, may force researchers to reconsider the extent of liquefaction damage possibly occurring in situations such as this8."With such a long-lasting earthquake, we saw how structures that might have been okay after 30 seconds just continued to sink and tilt as the shaking continued for several more minutes," he said. "And it was clear that younger sediments, and especially areas built on recently filled ground, are much more vulnerable."The data provided by analyzing the Japanese earthquake, researchers said, should make it possible to improve the understanding of this soil phenomenon and better prepare for it in the future. Ashford said it was critical for the team to collect the information quickly, before damage was removed in the recovery efforts9."There's no doubt that we'll learn things from what happened in Japan10 that11 will help us to reduce risks in other similar events," Ashford said. "Future construction in some places may make more use of techniques known to reduce liquefaction, such as better compaction to make soils dense, or use of reinforcing stone columns."Ashford pointed out that northern California have younger soils vulnerable to liquefaction -on the coast, near river deposits or in areas with filled ground. The "young" sediments, in geologic terms, may be those deposited within the past 10,000 years or more. In Oregon, for instance, that describes much of downtown Portland, the Portland International Airport and other cities.Anything near a river and old flood plains is a suspect12, and the Oregon Department of Transportation has already concluded that 1,100 bridges in the state are at risk from an earthquake. Fewer than 15 percent of them have been reinforced to prevent collapse. Japan has suffered tremendous losses in the March 11 earthquake, but Japanese construction standards helped prevent many buildings from collapse -even as they tilted and sank into the ground.完形填空 A级+第十三篇：Better Solar Energy Systems: More Heat, More Light（A级）+第十四篇Sharks Perform a Service for Earths Waters（A级）鲨鱼有益于地球水系+第十五篇："Liquefaction" Key to Much of Japanese Earthquake Damage（A级）第十三篇 Better Solar Energy Systems：More Heat，More Light  Solar photovoltaic thermal energy systems or PVTs, generate both heat and electricity, but (1) now they haven't been very good at the heat-generating part compared to a stand-alone solar thermal collector. That's because they operate at low temperatures to cool crystalline silicon solar cells, which lets the silicon generate more (2) but isn't a very efficient way to gather heat.  That's a problem of (3). Good solar hot-water systems can harvest much more energy than a solar-electric system at a substantially lower (4). And it's also a space problem: photovoltaic cells can take up all the space on the roof, leaving little rooms for thermal applications.  In a pair of studies, Joshua Pearce, an associate professor of materials science and engineering, has devised a (5) in the form of a better PVT made with a different kind of silicon. His research collaborators are Kunal Girotra from ThinSilicon in California and Michael Pathak and Stephen Harrison from Queen's University, Canada.  Most solar panels are made with crystalline silicon, but you can also make solar cells out of amorphous silicon, (6) known as thin-film silicon, They don't create as much electricity, but they are lighter, flexible , and cheaper: And , because they (7)much less silicon, they have a greener footprint. Unfortunately, thin-film silicon solar cells are (8) as some bad-newsphysics in the form of the Staebler-Wronski effect.  "That means that their efficiency (9) when you expose them to light - pretty much the worst possible effect for a solar cell," Pearce explains, which is one ofthe (10)thin-film solar panels make up only small fraction of the market.  However, Pearce and his team found a way to engineer around the Stacbler-Wronski effect by incorporating thin-film silicon in a new (11) of PVT. You don't have to cool down thin-film silicon to make it work. In fact, Pearce's group discovered that by beating it to solar-thermal operating temperatures, near the boiling (12) of water, they could make thicker cells that largely (13) the Staebler-Wronski effect. When they applied the thin-film silicon directly to a solar thermal energy (14), they also found that by baking the cell once a day, they (15) the solar cell's electrical efficiency by over 10 percent.词汇：photovoltaic n. 光电的   silicon  n. 硅thermal adj. 热的，热量的   amorphous  adj. 非晶形的crystalline  adj. 晶体的   footprint  n. 足迹 注释：1.solar photovoltaic thermal energy systems ：太阳能光伏热能系统2.they ：指代solar photovoltaic thermal energy systems.3.stand-alone ：单机的4.crystalline silicon solar cells ：晶体硅太阳能电池5.whih：指前半句中的to cool crystalline silicon solar cells 这件事6.room：空间7.solar panels：太阳能电池板8.amorphous silicon ：非晶硅9.thin-film silicon ：薄膜硅10. Staebler-Wronski Erfect：SWE效应. 在光的照射下. 非晶硅氢的导电性短时间内显著衰退，这种特性被称为SWE 效应。11. pretty much ：几乎12. the worst possible effect ：最可能坏的效应13. engineer around ：精心地设计以克服或绕过14. solar-thermal operating temperatures ：太阳热能操作温度练习：1. A unless  B when  C if  D until2. A electricity  B magnetism  C ultraviolet  D radioactivity3. A dynamics  B geology  C economics  D biology4. A reward  B cost  C bill  D pay5. A decision  B solution  C suggestion  D qualification6. A roughly  B probably  C commonly  D specially7. A retrieve  B merge  C exchange  D require8. A vulnerable  B necessary  C important  D renewable9. A works   B counts   C rises  D drops10. A restrictions  B advances  C reasons  D strengths11. A size  B shape  C type  D brand12. A area  B point  C place  D extent13. A overcame  B promoted  C improved  D postponed14. A transformer  B adaptor  C transmitter  D collector15. A boosted  B defined   C wasted   D lower 答案：1. A unless  B when  C if  D until2. A electricity  B magnetism  C ultraviolet  D radioactivity3. A dynamics  B geology  C economics  D biology4. A reward  B cost  C bill  D pay5. A decision  B solution  C suggestion  D qualification6. A roughly  B probably  C commonly  D specially7. A retrieve  B merge  C exchange  D require8. A vulnerable  B necessary  C important  D renewable9. A works   B counts   C rises  D drops10. A restrictions  B advances  C reasons  D strengths11. A size  B shape  C type  D brand12. A area  B point  C place  D extent13. A overcame  B promoted  C improved  D postponed14. A transformer  B adaptor  C transmitter  D collector15. A boosted  B defined   C wasted   D lower答案与题解： 1.D 文章介绍最近科学家已经完善了太阳能光伏热能系统,现在新型的太阳能系统能将太阳能转换为更多的电能和热能。第一段说明以往晶体硅太阳能电池在收集热能方面效率很低。四个选项中，只有选用until 才符合上下文的意思。“until now they ( 太阳能光伏热能系统）haven't been very good at the heat-generating part compared to a stand-alone solar thermal collector.该句意为：与太阳热能单机集热器相比直到现在，传统太阳能光伏热能系统在转换热能方面效率一直不是很高。 2. A 本句说明了以往的太阳能光伏热能系统在转换热能方面效率低的原因, “to cool crystalline silicon solar cells( 冷却晶体硅太阳能电池) ” 能产生更多的电能，但不利于收集热能。electricity 是答案。 3. C 从上一段和本段的意思判断，收集热能效率低下不会是一个动力学(dynamics）问题，地质( geology) 问题或生物学( biology ) 问题。它是一个经济上的问题。答案是economics.4. B 本句说，good solar hot-water systems 在收获能量方面比solar-electric system 要好得多。从经济学的角度上分析，成本就降低了。所以，选cost 是对的。其他选项reward ，bill和pay均不符合句意. 5. B 上一段说光伏电池系统有两个问题. 即经济问题和空间问题。Joshua Pearce 采用另外一种硅制造PVT来解决上述问题。通过上述分析可以看出，他寻求的是一种解决问题的办法( solution ) ，而不是一个决定( decision) 、一个建议( suggestion ) 或一种资格( qualification）。 6.C amorphous silicon ( 非晶硅) 即为thin-fi1m silicon ( 薄膜硅) 。选择roughly/probably/wrongly ( known as thin-film silicon ) 表达的意思都不合逻辑。选commonly才合理。“amorphous silicon，commonly known as thin-film silicon”意为“非晶硅，通常被称为薄膜硅。 7. D 新型的太阳能电池采用薄膜硅制造，电能的转换量虽然不如晶体硅太阳能池，但薄膜硅太阳能电池用硅量小，比较环保。本题应选用require ，理由是：require much less silicon 与上下文的意思很连贯，而retrieve much less silicon ( 提取少得多的硅) merge much less silicon ( 混合少得多的硅) 或exchange much less silicon ( 交换少得多的硅) 都讲不通，意思离题太远。 8.A bad-news physics 是解题的关键词。既然是bad-news physics，所连用的形容词应该是负面意义的词。四个选项中只有vulnerable ( 易受攻击的) 符合这个条件， 所以是答案。 9.D 本段第一句说明vulnerable 的具体情况。既然是vulnerable ，efficiency 一定是drops，不会是rises。efficiency works(效率起作用)或efficiency counts（效率有重要意义)都离题太远。 10. C 薄膜硅太阳能电池效能低下，这是因。导致该产品市场占有份额很小，这是果。 选reasons 为答案很合理。 11.C 为了克服SWE. 效应Pearce 和他的团队悉心改进光伏太阳热能系统的结构。作者要写的应该是a new type of PVT( 一种新型PVT) ，不会是a new shape/size/brand PVT( 一种新形状的/新尺寸的/新品牌的PVT)。 12.B 从上下文判断，答案应该是point。将thin-film silicon 加热到solar-thermal operating temperatures 就是加热到near the boiling point of water ( 临近水的沸点) 。其他选项area，place 和extent 均不切题. 13. 从上下文判断，采用加热thin-film silicon 的方法，就能消除SWE 效应。四个选项中只有overcame 表达了这层意思。 14.D 答案是collector，因为solar thermal energy collector( 太阳能