51.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.

　　52.What is many captive shippers' attitude towards the consolidation in the rail industry?

　　A. Indifferent.

　　B. Supportive.

　　C. Indignant.

　　D. Apprehensive.

　　53.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.

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