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专家解题:2012年职称英语考试理工类C级概括大意与完成句子真题及答案解析2

来源:博大考神职称考试网 发布时间:2014-08-31
   考题类型:概括大意与完成句子     Learn about Light1    Ancient civilizationswere amazed by the existence of light for thousands of years. The Greekphilosophers believed that light was made up of countless, tiny particles thatenter the human eye and create what we call vision. However, Empedocles and aDutch scientist named Christian Huygens believed that light was like a wave.According to them, light spread out and travelled like a straight line. Thistheory was accepted during the 19th century.2    ln 1905, Albert Einsteinpublished a research paper in which he explained what is referred to as thephotoelectric effect. This theory explains that particles make up light. Theparticles Einstein was referring to are weightless bundles(束)ofelectromagnetic(电磁)energy called photons(光子). Today, scientists agree that light has a dual(二重) nature — it is partparticle and part wave. It is a form of energy that allows us to see thingsaround us.3    Things that give offlight are known as sources of light. During the day, the primary source oflight is the sun. Other sources of light include stars, flames, flashlights,street lamps and glowing gases in glass tube.4    When we draw the waylight travels we always use straight lines. This is because normally light raystravel in a straight line. However, there are some instances that can changethe path and even the nature of light. They are reflection, absorption, interference(干扰), etc.5    Physicists have attemptedto measure the speed of light since the early times. In 1849, Hippolyte Fizeauconducted an experiment by directing a beam of light to a mirror locatedkilometers away and placed a rotating cogwheel(旋转齿轮)between thebeam and the mirror. From the rate of rotation of the wheel, number of wheel’s teeth anddistance of the mirror, he was able to calculate that the speed of light is 313million meters per second. In a vacuum(真空),however, thespeed of light is 299,792,458 meters per second. This is about a million timesfaster than the speed of an airplane.-27. Objects are visible to the human eye as light is ______A. sources of lightB. the speed of lightC. the path of lightD. a straight lineE. a beam of lightF. a form of energy  专家解题:第一步:划出题干中的信息词:Objects,visible,human eye。第二步:根据信息词回归原文,定位到第一段第二句:The Greek philosophers believed that light was made up of countless,tiny particles that enter the human eye and create what we call vision.以及倒数第二句:Accordingto them, light spread out and travelled like a straight line.第三步:对比题干和原文信息,原文中说到古希腊哲学家认为我们看得到物体,是因为光是由粒子构成的,是呈直线展开的。比较几个选项,D选项a straight line在倒数第二句中出现。题干中的visible是第二句后面create what we call vision中的vison的派生词,都是和人的视线相关的意思。表示看得见,可见的。本题答案选择D选择。28. Stars, flames, flashlights are some examples of ______A. sources of lightB. the speed of lightC. the path of lightD. a straight lineE. a beam of lightF. a form of energy  专家解题:第一步:划出题干中的信息词:Stars, flames, flashlights。第二步:根据信息词回归原文,定位到第三段最后一句:Other sources of light include stars, flames, flashlights, streetlamps and glowing gases in glass tube.第三步:对比题干和原文信息,原文中明确说到了stars, flames, flashlights等都是一些很常见的光源(sourcesof light)。A选项符合原文信息,所以本题答案选择A选项。29. Some instances such as reflection and absorption canchange______A. sources of lightB. the speed of lightC. the path of lightD. a straight lineE. a beam of lightF. a form of energy  专家解题:第一步:划出题干中的信息词:reflection and absorption,change。第二步:根据信息词回归原文,定位到第四段最后两句:However, there are some instances that can change the path and eventhe nature of light. They are reflection, absorption, interference (干扰), etc.第三步:对比题干和原文信息,原文中明确提到了能够改变光传播的方向(change the path),甚至是改变光的性质(nature)的一些方式:reflection(反射), absorption(扭曲), interference (干扰)等。C选项符合原文,所以这道题的答案选择C选项。30. Hippolyte Fizeau conducted an experiment to measure______A. sources of lightB. the speed of lightC. the path of lightD. a straight lineE. a beam of lightF. a form of energy  专家解题:第一步:划出题干中的信息词:Hippolyte Fizeau,experiment,measure。第二步:根据信息词回归原文,定位到第五段第二句:In 1849, Hippolyte Fizeau conducted an experiment by directing abeam of light to a mirror located kilometers away and placed a rotatingcogwheel(旋转齿轮)between the beam and the mirror.第三步:对比题干和原文信息,原文中说到的Hippolyte Fizeau做的这个实验(experiment)是针对一束光(a beam of light )的。E选项符合原文,所以本题答案选择E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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