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[判断题]
According to matching principle, Sally Smith had expenses of $500 in April which she
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A.HUMAN
B.ANIMATE
C.MALE
D.ADULT
A.into
B.up to
C.according
D.instead of
A.variability
B.membership
C.similarities
D.functions
A.As long as
B.So far as
C.According to
D.In order that