[C] different colours could be produced as the film could be tailored to scatter particular wavelengths of light. [C] 薄膜可以量身定做来反射各种不同的光波,从而产生不同的颜色。
[D] certain colours could be made as the currency is distended so that it is easy to distinguish. [D] 随着钞票被伸展,可以产生一定的颜色从而容易辨别。
[答案] B
[难度系数] ☆☆☆
[分析] 细节题。根据第四段,这种物质可以用于制作钞票一是因为球体的尺寸可以裁减来发散出特别的光波,而是因为薄膜弯曲的话可以产生不同的颜色。选项中B最为符合。
4.The logic that food spoilage could be detected by use of the film is that _____ 4.食品腐败可以使用这种薄膜来发现,这背后的原理是_____
[A] the carbon particles Dr Baumberg adds into the film could react to specific toxic chemicals. [A] Baumberg加在薄膜中的碳颗粒可以对一定的有毒化学物质产生反应。
[B] the polystyrene spheres could scatter light from more angeles. [B] 聚苯乙烯球体可以从不同的角度来反射光。
[C] carbon particles positioned among the spheres could be adjusted to be sensitive to addled materials. [C] 在球体中间的碳颗粒可以调节,从而对腐败的物质产生反应。
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