单项选择题

A．To warn of dangers.
B．To explain traffic regulations.
C．To wake up drivers who are falling asleep.
D．To give directions.
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单项选择题
A．In the Paciffic Ocean.B．Close to Europe.C．Nobody knows.D．In the Atlantic Ocean.
A．In the Paciffic Ocean.
B．Close to Europe.
C．Nobody knows.
D．In the Atlantic Ocean.
单项选择题
A．A two-bedroom apartment.B．A sofa.C．A chair.D．A roommat
A．A two-bedroom apartment.
B．A sofa.
C．A chair.
D．A roommat
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