单项选择题


A.movement
B.orientation
C.behaviour
D.adjustment
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单项选择题
The American Statistical Association ______.
A.is converting statistical study from an art to a science
B.has an excellent record in business forecasting
C.is neither hopeful nor pessimistic
D.speaks with mathematical exactitude
单项选择题
Taxation in Roman days apparently was based on ______.
A.wealth
B.mobility
C.population
D.census takers
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