問題詳情

41-45 題    In the past few years, exciting new products made with nanotechnology have been making headlines around the world. But are these products really safe to use? —41— are worried that nanotechnology introduced to the environment could also introduce new dangers. First, the very tiny size of nano-particles means that they are able to move inside plant and animal cells, possibly —42— harm. Moreover, bacteria-killing particles such as titanium dioxide nano-particles, which are efficient in —43— germs in hospitals or in drinking water, can pose a grave threat to the ecosystem if not regulated. No one is sure what impact these particles might have —44— the environment since research on safety issues related to nanotechnology is —45— complete. It will take many years before scientists can fully understand what harmful effects, if any, nanotechnology may have.
41.
(A) Proponents
(B) Opponents
(C) Practitioners
(D) Processors

參考答案

答案：B
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)

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