单项选择题

Please_________from smoking until the aeroplane is airborne.

A．refrain
B．prevent
C．resist
D．restrain
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单项选择题
The parliamentary election was held on________.
A．a Wednesday
B．a Saturday
C．a Sunday
D．June 8.
单项选择题
________ is NOT a purpose of the program according to the passage
A．To keep the people there happy
B．To help the people there understand the meaning of work
C．To find a way to solve the generation gap
D．To help people find enjoyment in work
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