首页
财务会计
医药卫生
金融经济
考公考编
外语考试
学历提升
职称考试
建筑工程
IT考试
其他
登录
财务会计
共用题干 New Research Lights the Way to Sup
共用题干 New Research Lights the Way to Sup
tikufree
2019-12-17
35
问题
共用题干New Research Lights the Way to Super-fast Computers
1. New research published today in the journal Nature Coniniunications,has demonstrated how glass can be manipulated to create a material that will allow computers to transfer information using light. This development could significantly increase computer processing speeds and power in the future.
2. The research by the University of Surrey,in collaboration with the University of Cambridge and the University of Southampton,has found it is possible to change the electronic properties of amorphous chalcogenides,a glass material integral to data technologies such as CDs and DVDs. By using a technique called ion doping,the team of researchers have discovered a material that could use light to bring together different computing functions into one component,leading to all-optical systems.
3. Computers currently use electrons to transfer information and process applications.On the other hand,data sources such as the Internet rely on optical systems:the transfer of information using light. Optical fibres are used to send information around the world at the speed of light,but these signals then have to be converted to electrical signal once they reach a computer,causing a significant slowdown in processing.
4 .“The challenge is to find a single material that can effectively use and control light to carry information around a computer. Much like how the web uses light to deliver information,we want to use light to both deliver and process computer data,”said project leader,Dr. Richard Curry of the University of Surrey.
5 .“This has eluded researchers for decades,but now we have shown how a widely used glass Call be manipulated to conduct negative electrons,as well as positive charges,creating what are known as‘pn-junction'devices. This should enable the material to act as a light source,a light guide and a light detecto—something that can carry and interpret optical information.In doing so,this could transform the computers of tomorrow,allowing them to effectively process infonna- tion at much faster speeds.”
6. The researchers expect that the results of this research will be integrated into computers within ten years .In the short term,the glass is already being developed and used in next-generation computer memory technology known as CRAM,which may ultimately be integrated with the advances reported.
选项
Paragraph 2_________A: Expectation of the discoveryB:The problem of current computers.C:.A new findingD: The purpose of the researchE: Public reaction to the discoveryF: The use of the new material
答案
C
解析
本段大意:由三所大学共同合作进行的研究发现,改变无定型硫属化合物的电子特性是有可能的。研究团队通过使用离子注入的技术,发现了一种可以使用光汇集不同的计算功能组合到一个组件的物质,形成全光系统。因此本段主要介绍研究团队的新发现,故选C。 本段第三句提到,光纤被用来在世界各地以光的速度传递信息,但是一旦信号到达一台电脑,这些信号必须转换为电信号,导致处理速度严重放慢。很显然,这是当前电脑的一个问题。故选B。 根据理查德的话可以知道,研究的目的是使用光来传递和处理计算机数据。本段主要介绍研究的目的,故选D。 本段主要介绍如何把应用广泛的玻璃处理成可以同时传导正、负电子的设备。也就是在研究中引入新的材料。故选F。 根据第一段“This development could significantly increase computer processing speeds and power in the future.”可知,研究结果可以提高电脑的数据处理速率。故选B。 根据第三段第一句可知,当前电脑是用电子(electrons)来传递信息的。 根据第二段的“…material that could use light to bring together different computing functions into one component, leading to all-optical systems.”可知,选F。其中的material 指的就是the new glass material。 根据第五段“This should enable the material to act as a light source… that can carry and interpret optical information.”可找出答案。故选A。
转载请注明原文地址:https://ti.zuoweng.com/ti/qwOfKKKQ
相关试题推荐
D根据题干第二个图形的结构,可排除A、B、C,如图所示:
C题干四个图形中都含有一条长度相等的水平或竖直线,由此选择C,如图所示:
D根据题干第一、四个图形中的两条水平线可确定答案为D,如图所示:
B题干符号规律为ABCDEAB,只有B项符合此规律。故答案选B。
C题干符号规律为ABCDABCEF,只有C项符合此规律。故答案选C。
(―)每道题在上边的题干中给出一套图形,其中有五个图,这五个图呈现一定的规律性。
(―)每道题在上边的题干中给出一套图形,其中有五个图,这五个图呈现一定的规律性。
每道题在左边的题干中给出一套图形,其中有五个图,这五个图呈现一定的规律性。在右
每道题在左边的题干中给出一套图形,其中有五个图,这五个图呈现一定的规律性。在右
请从四个选项中选出正确的一项,其特征或规律与题干给出的一串符号的特征或规律最为相
随机试题
下面对“色阶”(levels)命令描述正确的是:A、缩小对话框中的“输入色阶”的数值范围导致图象变亮B、缩小对话框中的“输出色阶”的数值范围导致图象变暗C、调
根据增值税法律制度的规定,下列关于小规模纳税人销售自己使用过的固定资产计征增值税
下列关于徇私舞弊发售发票、抵扣税款、出口退税罪的说法中正确的是()。
对火灾自动报警系统设计中的以下问题,选择正确的答案。 火灾应急广播系统在火灾
X企业库存现金清查中,发现现金短缺300元,经查明属于出纳人员的责任,则应借记“
与同事相处,要保持一定距离,不愠不火,对此你怎么理解?
正常足月儿的皮肤外观特点是 A.肤色苍白,皮下脂肪丰满 B.肤色稍黄,皮
对银行而言,进行市场细分时,所要细分的“市场”是指()。 A.产品服务
社会工作者在社区开展助推社区社会组织工作。为了培养居民带头人的领导力。社会工作者采用工作坊的方式开展培训。该工作坊的培训重点应聚焦在( )。A.提高文字表达能
共用题干 国内某三星级酒店人力资源管理部门近日通过调查发现:酒店基层员工近期工作效率下滑、缺勤率上升、工作积极性下降,基层员工与客户的不和谐事件也凸显上...