单项选择题

Although economists have traditionally considered the district to be solely an agricultural one, the ______ of the inhabitants’ occupations makes such a classification obsolete.

A. productivity
B. diversity
C. predictability
D. profitability
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单项选择题
Although specific concerns may determine the intent of a research project, its results are often ______.
A. unanticipated
B. beneficial
C. spectacular
D. specialized
单项选择题
Because folk art is neither completely rejected nor accepted as an art form by art historians, their final evaluations of it necessarily remain ______.
A. arbitrary
B. estimable
C. equivocal
D. orthodox
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