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
2024-04-25
7
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] 【C7】
选项
答案
C
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3571271.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
创建绿色饭店的原则有()。A.再使用原则 B.减量化原则 C.互补原则
以下选项中不属于管道荷载的类别的是()。A.垂直荷载 B.沿管道轴向水平荷
下图示意新一代信息技术支撑下的智慧城市。读图回答题。 智慧城市建
建设工程合同按承包工程计价方式可分为()。A、总价合同、单价合同、成本加奖金合同
我国目前只能由依法设立的()担任基金管理人。A.基金投资者 B.基金管理公司
以突发口眼斜为主要临床表现的是()A.寒淫证 B.火热证 C.暑淫证
原发性肾病综合征病人最易出现血栓的部位是()。A.下肢深静脉 B.肾静脉
问题答案是问卷的核心所在,问题有()几种类型。A.态度 B.评估 C.行
德育过程是对学生知、情、意、行的培养提高过程,其实施顺序是() A
拟发行上市的公司在进行改组时,发起人以非货币性资产出资,应将开展业务所必需的固定
最新回复
(
0
)