73. According to those who support mergers railway monopoly is unlikely because
　　A. cost reduction is based on competition.
　　B. services call for cross-trade coordination.
　　C. outside competitors will continue to exist.
　　D. shippers will have the railway by the throat.

　　74. What is many captive shippers' attitude towards the consolidation in the rail industry?
　　A. Indifferent.
　　B. Supportive.
　　C. Indignant.
　　D. Apprehensive.

　　75. It can be inferred from paragraph 3 that
　　A. shippers will be charged less without a rival railroad.
　　B. there will soon be only one railroad company nationwide.
　　C. overcharged shippers are unlikely to appeal for rate relief.
　　D. a government board ensures fair play in railway business.

　　76. The word "arbiters" (line 7, paragraph 4) most probably refers to those
　　A. who work as coordinators.
　　B. who function as judges.
　　C. who supervise transactions.
　　D. who determine the price.

　　77. According to the text, 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.