单项选择题


Conversation 1

A．It is because of the air pressure.
B．It is because of the chewing-gum.
C．It is because of the food in her stomach.
D．It is because of her panic.
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单项选择题
A．In a train.B．In a plane.C．In a car.D．In a ship.
A．In a train.
B．In a plane.
C．In a car.
D．In a ship.
单项选择题
A．Because traveling by air costs too much money.B．Because traveling by air is uncomfortable.C．She thinks traveling by air is very dangerous.D．She is too old to travel by air.
A．Because traveling by air costs too much money.
B．Because traveling by air is uncomfortable.
C．She thinks traveling by air is very dangerous.
D．She is too old to travel by air.
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