首页
登录
职称英语
Today nanotechnology(纳米技术)is still in a formative phase. Yet it is maturing
Today nanotechnology(纳米技术)is still in a formative phase. Yet it is maturing
游客
2023-08-25
34
管理
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)ambiguities I)indignation
B)application J)ingenious
C)artificial K)instantaneously
D)compulsory L)perceive
E)cultivate M)properties
F)depiction N)soared
G)extraordinarily O)targeted
H)illuminate [br] 【C5】
选项
答案
O
解析
转载请注明原文地址:https://tihaiku.com/zcyy/2955005.html
相关试题推荐
Todaynanotechnology(纳米技术)isstillinaformativephase.Yetitismaturing
Todaynanotechnology(纳米技术)isstillinaformativephase.Yetitismaturing
Todaynanotechnology(纳米技术)isstillinaformativephase.Yetitismaturing
Todaynanotechnology(纳米技术)isstillinaformativephase.Yetitismaturing
Todaynanotechnology(纳米技术)isstillinaformativephase.Yetitismaturing
Todaynanotechnology(纳米技术)isstillinaformativephase.Yetitismaturing
Todaynanotechnology(纳米技术)isstillinaformativephase.Yetitismaturing
Todaynanotechnology(纳米技术)isstillinaformativephase.Yetitismaturing
Todaynanotechnology(纳米技术)isstillinaformativephase.Yetitismaturing
Todaynanotechnology(纳米技术)isstillinaformativephase.Yetitismaturing
随机试题
(1)"LikeFlorenceintheRenaissance."Thatisacommondescriptionofwhat
Testinghasreplacedteachinginmostpublicschools.Myownchildren’sscho
Whatisthenewsmainlyabout?[br][originaltext](29[B])Englishpremierl
[originaltext]M:Excuseme;Idon’tunderstandwhyflight213hasbeendelayed.
所示结构中各杆的EA、EI值均相同。在外力P作用下。A、B两点竖向位移关系正确的
温室效应将引起全球气温上升,导致气候异常、海平面上升、生态恶化。引起温室效应的最
治外感风寒而表证较轻、咳喘较重,宜选用的饮片是A.生麻黄 B.蜜麻黄 C.蜜
在其他条件一定的情况下,一个人在大学毕业以后工作的时间越长,则其进行高等教育投资
下列机构中,属于企业营销中介的有( )。A.代理商 B.第三方物流公司 C
某公司生产和销售单一产品,该产品单位边际贡献为2元,2022年销售量为40万件,
最新回复
(
0
)