单项选择题

A．You hear the gun before you see the smoke.
B．You see the smoke before you hear the gun.
C．The sound of the gun will reach you before the race starts.
D．Racers start to run before you see the smoke.
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单项选择题
A．City life is much the same in many parts of the world.B．In the United States, farm families live on their own farms.C．In many parts of the world, farmers live in villages.D．Farmer families in the United States have more children than families in the city.
A．City life is much the same in many parts of the world.
B．In the United States, farm families live on their own farms.
C．In many parts of the world, farmers live in villages.
D．Farmer families in the United States have more children than families in the city.
单项选择题
A．A new record.B．An old record.C．A popular record.D．A record of classical music.
A．A new record.
B．An old record.
C．A popular record.
D．A record of classical music.
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