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参考答案A
解析:题干中专有名词ISTP和数字thirty-seven是很明显的定位词，将答案快速确定到A段ISTP has demonstrated that public transport is more efficient than cars．The study compared the proportion of wealth poured into transport by thirty-seven cities around the world．This included both the public and private costs of building， maintaining and using a transport system．可以发现题干是对这一部分的简化．所以正确答案是A。