单项选择题

In 1975 the United States Army began to assign women to positions previously classified as having combat status.

A．secretly
B．genuinely
C．formerly
D．officially
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单项选择题
Most sound vibrations arrive at the eardrum by way of the auditory canal.
A．search for
B．reach
C．tickle
D．whisper to
单项选择题
The osprey flies above the water and when it spots a fish it swoops down to catch it.
A．drops
B．sees
C．wants
D．selects
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