問題詳情


(A) effects
(B) float
(C) scale
(D) illnesses
(E) feasible(AB) fabulous(AC) microscope(AD) hazards     Nanotechnology is a general term used to describe the process of making and measuring things on a 60 of less than 100 nanometers. That might not sound very small if you do not know what a nanometer is. However, once you learn that there are one billion nanometers in one meter, you can get an idea of how impressive this technology really is! Even though this 61 technology has been around for almost 100 years, we have only recently been able to experience both its benefits and its 62 . These days, nanotechnology is used primarily to make things stronger, stiffer, and smoother. Due to their tiny size, nanoparticles increase the overall surface area of an object, and that acts to give the object special properties or characteristics. One possible use of nanotechnology in the future is in the field of robotics. It might be 63 for tiny nano-robots, or “nanobots,” to easily perform tasks on a very, very small scale. Each of these nanobots would be so small that you would need a special 64 to see them. Because of their small size, however, a great deal of them would be needed to perform a task.
60

參考答案

答案：[無官方正解]
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)

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