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．The woman doesn’t like smoking.B．The place is air-conditioned.C．This is a non-smoking area.D．Nobody smokes here.
A．The woman doesn’t like smoking.
B．The place is air-conditioned.
C．This is a non-smoking area.
D．Nobody smokes here.
单项选择题
A．They work by motion.B．They work by electricity.C．They work by rubbing the food.D．They work by sending short waves.
A．They work by motion.
B．They work by electricity.
C．They work by rubbing the food.
D．They work by sending short waves.
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