单项选择题

Strict sanitary procedures formulated by our municipal government help to out-breaks of diseases.

A．preview
B．forestall
C．ignite
D．fluctuate
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单项选择题
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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