单项选择题

We should make mental preparation for failure, because there is only a(n)______number of possibilities of success.

A．infinite
B．finite
C．innumerable
D．numerous
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单项选择题
Force is measured in pound ______it is produced.
A．whenever
B．how
C．no matter how
D．although
单项选择题
Evidence came up______ specific sounds are recognized by babies as young as 6 months old.
A．what
B．that
C．which
D．whose
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