改进题：Plastics for industrial purposes are not valuable because th

改进题：Plastics for industrial purposes are not valuable because they are colourful.

译文：工业用的塑料没有价值因为它们五颜六色。
【正确答案】：改进的译文：工业用的塑料不因为五颜六色而有价值。
【题目解析】：p153