D. a government board ensures fair play in railway business.

　　54.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.

　　55.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.

　　CCDBA

　　Text 4 It is said that in England death is pressing, in Canada inevitable and in California optional Small wonder. Americans' life expectancy has nearly doubled over the past century. Failing hips can be replaced, clinical depression controlled, cataracts removed in a 30-minuts surgical procedure. Such advances offer the aging population a quality of life that was unimaginable when I entered medicine 50 years ago. But not even a great health-care system can cure death-and our failure to confront that reality now threatens this greatness of ours.

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