单项选择题

A．Fire prevention.
B．House construction.
C．Toxic chemicals.
D．Insects Elimination.
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单项选择题
A．Women should walk behind their husbands.B．Three or four generations live together in the same house.C．Old people are held in great respect.D．Women marry in a red dress.
A．Women should walk behind their husbands.
B．Three or four generations live together in the same house.
C．Old people are held in great respect.
D．Women marry in a red dress.
单项选择题
A．London Airport is one of the best airports in the world.B．One of the busiest airports in the world is London Airport.C．London Airport is one of the biggest airports in the world.D．In the world, London Airport is one of the safest airports.
A．London Airport is one of the best airports in the world.
B．One of the busiest airports in the world is London Airport.
C．London Airport is one of the biggest airports in the world.
D．In the world, London Airport is one of the safest airports.
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