单选题：根据下面资料，回答题： Most worthwhile careers require some kind of sp

根据下面资料，回答题：
Most worthwhile careers require some kind of specialized trainin9．Ideally，therefore，the choice of an __21__ should be made even before the choice of a curriculum in high school．Actual1y, __22__ ，most people make several job choices during their working lives，__23__ because of economic and industrial changes and partly to improve __24__ positions．The “one perfect job” does not exist．Young people should __25__ enter into a broad—flexible training program that will __26__ them for a field of work rather than for a single __27__.
Unfortunately many young people have to make career plans __28__ benefit of help from a competent vocational—counselor or psychologist．Knowing __29__ about the occupational world，or themselves for that matter，then choose their lifework on a hitormiss__30__．Some drift from job to job．Others __31__ to work in which they are unhappy or for which they are not fitted．
One common mistake is choosing an occupation for __32__ real or imagined prestige．Toc many high-school students-or their parents for them choose the professional field． __33__ both the relatively small proportion of workers in the professions and the extremely high educational and personal __34__．The imagined or real prestige of a profession or a“ white—collar” job is __35__ good reason for choosing it as lifework．__36__，these occupations ale not always well paid．Since a large pro-portion of jobs ale in mechanical and manual work，the __37__ 0f young people should give serious, __38__ to these fields．
Before making an occupational choice，a person should have a general idea of what he wants __39__ life and how hard he is willing to work to get it．Some people desire social prestige，others intellectual satisfaction．Some want security，others are willing to take __40__ for financial gain．Each occupational choice has its demands as well as its rewards．
A．Identification
B．entertainment
C．accommodation
D．occupation