单项选择题

This teaching method is a ______ of many methods which have been used for decades in the country.

A．symposium
B．symphony
C．spectrogram
D．synthesis
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单项选择题
Because a circle has no beginning or end, the wedding ring is a symbol of ______ love.
A．extravagant
B．prominent
C．prescient
D．eternal
单项选择题
In the past most pilots have been men, but today the number of women ______ this field is climbing.
A．shamming
B．devoting
C．registering
D．pursuing
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