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专家解题:2012年职称英语考试理工类A级完形填空历年真题及答案解析2

来源: 发布时间:2014-08-29
 考题类型:完形填空  SolarPower without Solar Cells    Adramatic and surprising magnetic effect of light discovered by University of Michigan researchers could lead to solarpower without traditional semiconductor-based solar cells.   The researchers found a way to make an "optical(光的) ______(51)," said StephenRand, a professor in the departments of Electrical Engineering and ComputerScience, Physics and Applied Physics.   Light has electric and magnetic ______(52). Until now, scientiststhought the effects of the magnetic field were so weak that they could be______ (53). What Rand and his colleagues found is that at the right intensity,when light is traveling through a material that does not ______ (54)electricity, the light field can generate magnetic effects that are 100 milliontimes stronger than previously expected. Under these circumstances, themagnetic effects develop strength ______ (55) to a strong electric effect.   "This could lead to a new kind of solar cell without semiconductorsand without absorption to produce charge separation," Randsaid. "In solar cells, the ______ (56) goes into a material, gets absorbedand creates heat. Here, we expect to have a very low heat load. Instead of thelight being absorbed, energy is stored in the magnetic moment. Intensemagnetization can be induced by intense light and then it is ultimately capableof providing a capacitive power ______ (57)." What makes this possible isa previously undetected brand of "optical rectification," saysWilliam Fisher, a doctoral student in applied physics. In traditional opticalrectification, light's electric field causes a charge separation, or a pulling______ (58) of the positive and negative charges in a material. This sets up avoltage, similar to ______ (59) in a battery.   Rand and Fisher found that under the right circumstances and in righttypes of materials, the light's magnetic field can also create opticalrectification. The light must be shone through a ______ (60) that does notconduct electricity, such as glass. And it must be focused to an intensity of10 million watts per square centimeter. Sunlight isn't this ______ (61) on itsown, but new materials are being sought that would work at lower intensities,Fisher said.  "In our most recent paper, we show that incoherent light likesunlight is theoretically almost ______ (62) effective in producing chargeseparation as laser light is,” Fisher said.   This new ______(63) could make solar power cheaper, the researchers say.They predict that with improved materials they could achieve 10 percentefficiency in converting solar power to useable energy. That's equivalent totoday's commercial-grade solar cells.  "To manufacture modern solar cells, you have to do ______ (64) semiconductorprocessing," Fisher said. "All we would need are lenses to focus thelight and a fiber to guide it. Glass works for ______ (65). It's already madein bulk, and it doesn't require as much processing. Transparent ceramics mightbe even better."56. (    )  A. electricity  B. light C. chemical D. gas 专家解题:第一步:首先看选项,本题的四个选项都是名词,考查名词的词义辨析。第二步:接下来看横线56,横线56的句子是:"In solar cells, the ______ (56) goes into a material, getsabsorbed and creates heat.太阳能电池是利用光射入一种材料, 吸收和产生热量。第三步:再看选项,根据原文,这里要填入一个表示“光”的意思的词,B选项light符合句意,所以本题答案选择B选项。57. (    )  A. plant  B. equipment  C. source  D. line 专家解题:第一步:首先看选项,本题的四个选项都是名词,考查名词的词义辨析。第二步:接下来看横线57,横线57的句子是:Intense magnetization can be induced by intense light and then it isultimately capable of providing a capacitive power ______ (57). 密歇根大学的科学家发现太阳光产生强烈的磁效应, 再转换为电, 所以磁效应是产生电的源泉。第三步:再看选项,根据原文,这里要填入一个表示“来源,源泉”的意思的词,C选项source表示此意,符合句意,所以这道题答案选择C选项。58. (    )  A. apart  B. up  C. down  D. together 专家解题:第一步:首先看选项,本题的四个选项都是介词,所以本题是对于介词词义的辨析和句子逻辑的关系的考查。第二步:看横线58,横线58的句子是:In traditional optical rectification, light's electric field causesa charge separation, or a pulling ______(58) of the positive and negativecharges in a material.在本句中or的意思是 "即" , 起到解释说明的作用,用来解释专业术语charge separation(电荷分离)。第三步:最后看选项,其中,apart与pulling构成pulling apart,pulling apart的意思相当于separation,分离的意思,所以本题的答案是A选项。59. (    )  A. this B. those C. these D. that 专家解题:第一步:本题的四个选项都是代词,所以本题的重点是考查代词的词义和句子的逻辑联系。第二步:接下来看横线59,横线59的句子是:This sets up a voltage, similar to ______(59) in a battery. 从上下文判断, 要填入的代词是替代前面的voltage。根据英语语法, 替代单数名词的代词要用that, 替代复数名词的代词要用those。voltage是单数, 所以只有D选项的that才符合,所以本题的正确答案为选项D。60. (    )  A. device  B. detector  C. meter  D. material 专家解题:第一步:首先看选项,本题的四个选项都是名词,考查名词的词义辨析。第二步:接下来看横线60,横线60的句子是:The light must be shone through a ______ (60) that does not conductelectricity, such as glass.光必须穿过像玻璃一样的不导电物质。第三步:再看选项,根据原文,这里要填入一个表示“物质”意思的词,D选项material表示这个意思,符合句意,所以本题答案为D选项。  为帮助考生用最轻松的方式通过职称英语考试,考职称网官方推荐:博大考神职称英语家庭式培训班,它是在家里上的面授班,通过打造轻松愉快的学习过程,帮助考生掌握职称英语的考试技巧,提供贴心的班主任全程督导服务帮助考生坚持学完所有课程,只要学习达标,即可通过考试,不过退款!(职称英语零基础通关QQ交流群:347526614)2015年如何轻松通过职称英语考试?】  <<<<<职称英语vip保过,不过退款!<>  <<<<<职称英语零基础也不怕?这里保过!<>  <<<<<什么是职称英语?有什么通过秘诀吗?<>  <<<<<职称英语教父幺建华揭秘过关技巧<>   <<<<<在家也可以上职称英语面授班!<>    <<<<<不用背单词也能通过职称英语!<>
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