单项选择题

A．Follow the instruction he gets from the intercom.
B．After the plane takes off.
C．As soon as the light above the seats goes off.
D．When he gets the instruction from the Stewardess.
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单项选择题
A．To avoid failure.B．To avoid lasting sufferings.C．To avoid being blamed on a minor fault.D．To avoid anxiety, worry and regret.
A．To avoid failure.
B．To avoid lasting sufferings.
C．To avoid being blamed on a minor fault.
D．To avoid anxiety, worry and regret.
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