By late middle ages many workers are looking 41 to retirement, and millions of those 42 have retired are only too glad to exchange the routines of work 43 the satisfaction that a more leisured life may 44. Many other workers are reluctant to give up their 45. The desire to continue working often stems from harsh economic reality, for 46 usually brings a sharp drop in income. 47 workers fear the loss of social identity that can result from 48 a job. They may be left with “nothing to do”, and may find that they are 49 a life with significant meaning and fulfillment. Those old people who 50 like to continue working are often victims of 51 is perhaps the most striking example of age discrimination (歧视): the practice of mandatory (强制的) retirement, under which people are forced to give up their jobs immediately when they 52 a certain age. Until recently the precise age for mandatory retirement 53 from job to job. The usual mandatory retirement age in the U.S.A., however, was sixtyfive. The objection to mandatory retirement is that there is no 54 to suggest that most people over the age of sixtyfive or seventy are incapable of working; at the turn of the century, in fact, 70 percent of men over sixtyfive were still 55 in the labor force.

A. any
B. some
C. no
D. somebody