第23题: [单项选择]According to the passage, the cost increase in the rail industry is mainly caused by ______. A. the continuing acquisition B. the growing traffic C. the cheering Wall Street D. the shrinking market 参考答案:A 答案解析:推理判断题。根据原文最后一段第二、三句,尽管铁路业财源大有希望,其收人仍然不足以支付为维持运量日益增加而投入的资本。然而,由于有华尔街为其打气,铁路方面仍然贷款数十亿元去修建一条又一条的铁路。由此可见