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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People of all countries are expected to ______ the principles of the United Nations and defend the peace in the world.
A．inspect
B．expedited
C．uphold
D．reinstall
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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