单项选择题

According to a growing number of experts, it is already technically ______ to construct a pioneering space colony, powered by solar energy.

A．practical
B．flexible
C．feasible
D．beneficial
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单项选择题
The ______ of a society, club, etc, are the records of its doings, especially as published each year.
A．procedures
B．processes
C．proceedings
D．projects
单项选择题
All the people in the stadium cheered up when they saw hundreds of colorful balloons ______ slowly into the sky.
A．ascending
B．elevating
C．escalating
D．lingering
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