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A team of engineers at Harvard University has been inspired by Nature to create

A team of engineers at Harvard University has been inspired by Nature to create

题文

A team of engineers at Harvard University has been inspired by Nature to create the first robotic fly. The mechanical fly has become a platform for a series of new high-tech integrated systems. Designed to do what a fly does naturally, the tiny machine is the size of a fat housefly. Its mini wings allow it to stay in the air and perform controlled flight tasks.
“It’s extremely important for us to think about this as a whole system and not just the sum of a bunch of individual components (元件),” said Robert Wood, the Harvard engineering professor who has been working on the robotic fly project for over a decade. A few years ago, his team got the go-ahead to start piecing together the components. “The added difficulty with a project like this is that actually none of those components are off the shelf and so we have to develop them all on our own,” he said.
They engineered a series of systems to start and drive the robotic fly. “The seemingly simple system which just moves the wings has a number of interdependencies on the individual components, each of which individually has to perform well, but then has to be matched well to everything it’s connected to,” said Wood. The flight device was built into a set of power, computation, sensing and control systems. Wood says the success of the project proves that the flying robot with these tiny components can be built and manufactured.
While this first robotic flyer is linked to a small, off-board power source, the goal is eventually to equip it with a built-in power source, so that it might someday perform data-gathering work at rescue sites, in farmers’ fields or on the battlefield. “Basically it should be able to take off, land and fly around,” he said.
Wood says the design offers a new way to study flight mechanics and control at insect-scale. Yet, the power, sensing and computation technologies on board could have much broader applications. “You can start thinking about using them to answer open scientific questions, you know, to study biology in ways that would be difficult with the animals, but using these robots instead,” he said. “So there are a lot of technologies and open interesting scientific questions that are really what drives us on a day to day basis.”
(392 words)
小题1:The difficulty the team of engineers met with while making the robotic fly was that __________.A.they had no model in their mindB.they did not have sufficient timeC.they had no ready-made componentsD.they could not assemble the components小题2:It can be inferred from paragraphs 3 and 4 that the robotic fly __________.A.consists of a flight device and a control systemB.can just fly in limited areas at the present timeC.can collect information from many sourcesD.has been put into wide application小题3:Which of the following can be learned from the passage?A.The robotic flyer is designed to learn about insects.B.Animals are not allowed in biological experiments.C.There used to be few ways to study how insects fly.D.Wood’s design can replace animals in some experiments.小题4:Which of the following might be the best title of the passage?A.Father of Robotic FlyB.Inspiration from Engineering ScienceC.Robotic Fly Imitates Real Life InsectD.Harvard Breaks Through in Insect Study 题型:未知 难度:其他题型

答案


小题1:C
小题2:B
小题3:D
小题4:C

解析


【文章大意】主要讲述的是哈佛大学从自然界的昆虫那里得到了灵感,设计开发了第一款机器苍蝇。文章介绍了该项研究存在的困难,研究将要发展的方向和该研究会带来的好处。
小题1:根据第二段的“The added difficulty with a project like this is that actually none of those components are off the shelf and so we have to develop them all on our own”意为类似这样的项目的一个额外的困难就是,这些组成部件从来就没有现成的,我们不得不靠自己去开发,从中可知,困难就是没有现成的组成部件,即C项。
小题2:根据第三段的“he flight device was built into a set of power, computation, sensing and control systems”可知A项是错误的。根据第四段的“While this first robotic flyer is linked to a small, off-board power source”和“Basically it should be able to take off, land and fly around,”可知,目前由于电池等的限制,只能在有限的区域飞行。因此B项是正确的。根据第四段的“so that it might someday perform data-gathering work at rescue sites, in farmers’ fields or on the battlefield”可知该飞行器是在someday将来的某一天才能从不同的地方收集信息,而不是现在,因此排除C项。纵观全文,讲述的是该飞行器尚处于开发的初级阶段,有很多地方需要改善,因此D项广泛投入使用是错误的。综上所述,选B项。
小题3:根据第四段的it might someday perform data-gathering work at rescue sites, in farmers’ fields or on the battlefield可知,A项是错误的。B项中animals are not allowed 是错的,应该是difficult with animals,即有些用动物来做试验是困难的,不是不允许。C项在文中并没有提到以前方法的多少,文中只是说offers a new way to study,提供了新的方法,故排除C项。根据最后一段的 you know, to study biology in ways that would be difficult with the animals, but using these robots instead,可知,有些试验用动物很苦难,但是可以用机器人来替代,故选择D项。
小题4:文章的重点观点在第一段,主要讲述的是哈佛大学从自然界的昆虫那里得到了灵感,设计开发了第一款机器苍蝇。因此选择C项,A重点在father,与文章中心不符,B项没有突出得出的灵感是什么,不够具体,D项讲的是在昆虫研究方面的突破,与文章中心不符。

考点

据考高分专家说,试题“A team of engineers .....”主要考查你对 [科教类阅读 ]考点的理解。

科教类阅读

科教类阅读的概念:

科教类阅读主要考查考生对书面语篇的整体领悟能力和接受及处理具体信息的能力。试题的取材,密切联系当前我国和世界经济、科技等方面的变化,有关数据的来源真实可信。

科教类文章阅读技巧:

一、材料特点:
这类文章的总体特点是:科技词汇多,句子结构复杂,理论性强,逻辑严谨。具体说来它有以下几个特点:
1、文章中词汇的意义比较单一、稳定、简明,不带感情色彩,具有单一性和准确性的特点。这类文章通常不会出现文学英语中采用的排比、比喻、夸张等修辞手法,一词多义的现象也不多见。
2、句子结构较复杂,语法分析较困难。为了描述一个客观事物,严密地表达自己的思想,作者经常会使用集多种语法现象于一体的长句。
3、常使用被动语态,尤其是一些惯用被动句式。

二、命题特点:
科普类阅读的主要命题形式有事实细节题、词义猜测题、推理判断题以及主旨概括题等,其中推理判断题居多。

三、应对策略:

1、要想做好科普英语阅读理解题,同学们就要注意平时多读科普知识类文章,学习科普知识,积累常见的科普词汇,从根本上提高科普英语的阅读能力。
2、要熟悉科普类文章的结构特点。科普类文章一般由标题(Head line),导语(Introduction),背景(Back ground),主体(Main body)和结尾(End)五部分构成。标题是文章中心思想高度而又精辟的概括,但根据历年的高考情况来看,这类阅读理解材料一般不给标题,而要同学们选择标题。导语一般位于整篇文章的首段。背景交待一个事实的起因。主体则对导语概括的事实进行详细叙述,这一部分命题往往最多,因此,阅读时,同学们要把这部分作为重点。结尾往往也是中心思想的概括,并与导语相呼应,命题者常在此要设计一道推理判断题。
3、在进行推理判断时,同学们一定要以阅读材料所提供的科学事实为依据,同时所得出的结论还应符合基本的科普常识。

科普类阅读应试策略:

命题趋势
阅读理解题主要考查考生对书面语篇的整体领悟能力和接受及处理具体信息的能力。试题的取材,密切联系当前我国和世界经济、科技等方面的变化,有关数据的来源真实可信。因此科普知识类文章是每年的必考题。分析历年的科普类文章我们不难发现以下特点:
1、文章逻辑性强,条理清楚,语法结构简单,用语通俗。
2、文章内容注重科技领域的新发现。内容新颖,从而使文章显得陌生,内容抽象复杂。
3、命题方面注意对具体细节的准确理解和以之为依据的推理判断。
4、以人们的日常行为或饮食健康入手,探讨利弊,诠释过程,阐述概念。
应试对策
许多考生在考试时感到困惑的是:为什么一些没有超越中学语法和词汇范围的篇章,读起来却不能正确理解,或者要花费很多时间才能读懂呢?这种现象的产生与阅读方法有很大的关系。例如,有的考生在考试时一见到文章就立刻开始读,结果读了半天,还不知道短文讲的是什么,试题要求了些什么,结果浪费了大量的时间,而阅读效果并不好。那么,怎样读效果才好呢?任何一种阅读方法或技巧的使用,都是由篇章特点和试题本身的要求决定的,应根据不同的体裁和试题要求采取不同的策略。
1、浏览。浏览的主要目的就是确定文章的体裁。如果文章属于人物传记、记叙文、故事、科普小品和有关社会文化、文史知识的文章,一般来说,应该先看看文章的试题考查内容,对题目类型做到心中有数,针对不同问题,在通读时有粗有细地去阅读,这样不仅能把握篇章的基本结构和逻辑线索,也能做好有关具体事实信息考查的试题。
2、挖掘寓意,掌握中心思想,推出结论。任何文章,作者在行文时都有一定的写作目的和主要话题。在通读篇章时应该吃透作者的写作意图,抓住文章的主题句,充分发挥自己的想象力和概括力,作出对中心思想的归纳和结论的推断。
3、把握篇章结构,利用上下文进行推测。高考中的阅读理解篇章往往是一个较完整的短文,其结构、思想,前后上下连贯统一。考试时应充分利用这一特点推测一些生词、短语在句中的含义,切莫盲目孤立猜测。
4、综观全篇,前后呼应。这是阅读理解的最后一步,在做完阅读理解题后,要立足于文章整体,再迅速读一遍短文,短文中的问题和答案的设置前后都是相关联的,有着一定的连续性,体现着文章的基本脉络。

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