【单选题】

Most worthwhile careers require some kind of specialized training. Ideally, the choice of an (1) should (2) even before choice of a curriculum in high school.Actually, most people make several job choices during their working lives, (3) because of economic and industrial changes and partly to (4) their position. The "one (5) job" does not exist. Young people should (6) enter a broad (7) training program that will (8) them for a field of work rather than for a single joB、

Unfortunately many young people have to make career plans without benefit of help from a(n) (9) vocational counselor or psychologist. Knowing (10) about the occupational world, or themselves for that matter, they choose their lifework on a hit-or-miss (11) . Some (12) from job to joB、Others (13) to work in which they are unhappy and (14) they are not fitteD、
One common mistake is choosing an occupation for its real or imagined prestige. Too many high—school students—or their parents for them—choose the professional field, (15) both the relatively small proportion of workers in the professions and the extremely high educational and personal (16) . The imagined or real prestige of a profession or a "white-collar" job is no good reason for choosing it as life’s work. (17) , these occupations are not always well paiD、Since a large proportion of jobs are in mechanical and manual work, the (18) of young people should give serious (19) to these fields.
Before making an occupational choice, a person should have a general idea of what he wants out of 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 (20) for financial gain.Each occupational choice has its demands as well as its rewards.
A、in which B、for whichC、with which D、on which