Most worthwhile careers require some kind of specialized training. Ideally, therefore, the choice of an 【C1】______should be made even before choice of a curriculum in high school. Actually,【C2】______, most people make several job choices during their working lives,【C3】______because of economic and industrial changes and partly to improve【C4】______position. The "one perfect job" does not exist. Young people should【C5】______enter into a broad flexible training program that will【C6】______them for a field of work rather than for a single【C7】______. Unfortunately many young people have to make career plans【C8】______benefit of help from a competent vocational counselor or psychologist. Knowing【C9】______about the occupational world, or themselves for that matter, they choose their lifework on a hit-or-miss【C10】______. Some drift from job to job. Others【C11】______to work in which they are unhappy and for which they are not fitted. One common mistake is choosing an occupation for【C12】______real or imagined prestige. Too many high school students or their parents for them choose the professional field,【C13】______both the relatively small proportion of workers in the professions and the extremely high educational and personal【C14】______. The imagined or real prestige of a profession or a "white-collar" job is【C15】______good reason for choosing it as life" s work.【C16】______, these occupations are not always well paid. Since a large proportion of jobs are in mechanical and manual work, the【C17】______of young people should give serious【C18】______to these fields. Before making an occupational choice, a person should have a general idea of what he wants 【C19】______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【C20】______for financial gain. Each occupational choice has its demands as well as its rewards.

【C3】

A．entirely
B．mainly
C．partly
D．largely