单项选择题

Force is measured in pound ______it is produced.

A．whenever
B．how
C．no matter how
D．although
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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
单项选择题
Did you hear someone ______in the next room all last night
A．moving about
B．moving along
C．moving off
D．moving on
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