首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Today nanotechnology(纳米技术)is still in a formative phase. Yet it is maturing rapidly. Between 1997 and 2005, investment in nanote
Today nanotechnology(纳米技术)is still in a formative phase. Yet it is maturing rapidly. Between 1997 and 2005, investment in nanote
admin
2016-01-05
86
问题
Today nanotechnology(纳米技术)is still in a formative phase. Yet it is maturing rapidly. Between 1997 and 2005, investment in nanotech research and development by governments around the world【C1】______from $ 432 million to about $4.1 billion, and corresponding industry investment exceeded that of governments by 2005. By 2015 , products incorporating nanotech will contribute approximately $ 1 trillion to the global economy.
Descriptions of nanotech typically characterize it purely in terms of the minute size—assemblies between the size of an atom and about 100 molecular diameters(分子直径). That【C2】______makes it sound as though nanotech is merely looking to use infinitely smaller parts than conventional engineering. But rearranging the atoms and molecules leads to new【C3】______One sees a transition between the fixed behavior of individual atoms and molecules and the adjustable behavior of collectives. Thus, nanotechnology might better be viewed as the【C4】______of quantum theory(量子论)and other nano-specific phenomena to fundamentally control the properties and behavior of matter.
The second stage, which began in 2005, focuses on active nanostructures that change their size, shape, conductivity or other properties during use. New drug-delivery particles could release therapeutic(治疗的)molecules in the body only after they reached their【C5】______diseased tissues. Electronic components such as transistors and amplifiers with adaptive functions could be reduced to single, complex molecules.
Starting around 2010, workers will【C6】______expertise with systems of nanostructures, directing large numbers of intricate components to specified ends. One application could involve the guided self-assembly of nanoelectronic components into three-dimensional circuits and whole devices. Medicine could employ such systems to improve the tissue compatibility of implants, or perhaps even to build【C7】______organs.
After 2015-2020, the field will include molecular nanosystems. Whereas biological systems are water-based and markedly temperature-sensitive, these molecular nanosystems will be able to operate in a far wider range of environments and should be much faster. Computers and robots could be reduced to【C8】______small sizes. New interfaces linking people directly to electronics could change telecommunications.
Over time, therefore, nanotechnology should benefit every industrial sector and health care field. Nanotech does, however, pose new challenges to risk governance as well. Internationally, more needs to be done to collect the scientific information needed to resolve the【C9】______and to install the proper regulatory oversight. Helping the public to【C10】______nanotech soberly in a big picture that retains human values and quality of life will also be essential for this powerful new discipline to live up to its astonishing potential.
A)ingenious I)cultivate
B)properties J)targeted G)ambiguities K)perceive
D)soared L)depiction
E)extraordinarily M)illuminate
F)artificial N)compulsory
G)indignation O)application
H)instantaneously
【C4】
选项
答案
O
解析
结合句意:最好把纳米技术视为量子论和其他纳米类现象的______,而最终控制物质属性和活动的技术。备选名词中的application“应用”符合句意,故O)为答案。
转载请注明原文地址:https://kaotiyun.com/show/ddQ7777K
0
大学英语六级
相关试题推荐
A、Thehistoryofsomefamouscities.B、Thepopulationinthewholeworld.C、ThedifferencebetweenEuropeandUSA.D、Thecharact
ApowerfulearthquakestruckanareanearthenortherncoastofChileonWednesday.Theearthquakecameadayafteranevenstro
Iwouldliketotalkforjustoneminutetothestudentsaboutyourfuturewhenyouleavehere.Becauseyouwilllearnatremend
Iwouldliketotalkforjustoneminutetothestudentsaboutyourfuturewhenyouleavehere.Becauseyouwilllearnatremend
ItwasmusictomyearstohearthattheGovernment’schiefadviseron【C1】______,SusanJebb,wantsparentsto【C2】______fruitj
Baby-NamingTrendsA)Overthelastfiftyyears,Americanparentshaveradicallyincreasedthevarietyofnamestheygivetheirc
TheDodgeBrothersA)Itwas100yearsagothisweekthattheDodgebrothersfoundedthepowerfulcarbrandthatstillbearsthei
A、Litterandwaste.B、Metalandpaper.C、Oil.D、Artificialsubstancesandnaturalsubstances.D细节题。根据文中“Pollutioniscausedeith
TheImpactoftheInternetonEducation1.网络对传统教育产生了很大的影响,越来越多的人趋向于网络学习2.产生这种现象的原因3.为此,我们自已应当……
A、Playbasketballwithhiscolleagues.B、Gotohospitalandhaveaphysicalcheck.C、Loseweightandstrengthenthemuscles.D、C
随机试题
在物资统计中,标志按其表明总体单位特征的区别,又分为品质标志和()标志。
下列哪项属五行之“金”
下列关于超导磁体的特点,不正确的是
风险管理是为了达到一个组织的既定目标,而对组织所承担的各种风险进行管理的系统过程,其采取的方法应符合()的要求。
新型城市卫生服务体系是以社区卫生服务为基础,社区卫生服务机构与医院()分工合理、协作密切共同构成的。
外部言语主要有__________和__________两大类。
从所给的四个选项中,选择最合适的一个填入问号处,使之呈现一定的规律性。
下列哪一项不支持急进性肾小球肾炎的诊断
属相
A、Thespeakerisaskedtocheckhisbag.B、Thespeakerisabouttofinishhisdinner.C、Thespeakerdoesn’twanttogotothede
最新回复
(
0
)