单项选择题

It's generally agreed that fluctuations in birth rate are ______ to a number of economic factors.

A．entitled
B．attributed
C．confined
D．dedicated
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单项选择题
A great deal of ______ for our success should go to Michael Lee, head of our team.
A．merit
B．credit
C．favor
D．reward
单项选择题
Its a well - known fact that truth will in the end ______ over falsehood, and right over wrong.

A．dominate
B．prevail
C．thrive
D．conquer
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