单项选择题

An investigation that is ______ can occasionally yield new facts, even notable ones, but typically the appearance of such facts is the result of a search in a definite direction.

A. timely
B. unguided
C. consistent
D. subjective
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单项选择题
His parents began to （）a small sum of money every month for his college education when he was still a little child.

A. put up
B. lay down
C. set aside
D. place apart
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