题目内容：
Economists believe that job earnings influence choice of occupation. They acknowledge that people place varying emphasis __11__income， but point out that
workers tend to move from one occupation to another __12__changes in salaries. In
1931， H.F.Clark， an economist， stated that “proper information regarding wages if
sufficiently __13__ upon people， will lead to correct choice of occupation and correct
__14__ of people in an occupation， provided barriers to occupations have been
removed.” This means that the supply and demand of workers have __15__to do with
wages， __16__in turn influence people to choose certain careers……However， all
barriers to occupations will have to be removed __17__ career choices can be __18__ by
economics alone. There is little question __19__economic factors have some influence on
choice of an occupation. But to picture them as the major or most important reason
__20__against the soundest of folk wisdom： “Man does not live by bread alone.”
11.A.in B.on C.into D.for
12.A.despite B.other than C.through D.because of
13.A.to impress B.to be impressed C.impress D.impressed
14.A.number B.amount C.deal D.quantity
15.A.many B.much C.lot D.nothing
16.A.it B that C.which D.where
17.A.before B.after C.until D.when
18.A.expected B.explained C.expressed D.exposed
19.A.that B.which C.as D.when
20.A.to go B.going C.goes D.go
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