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A．On foot.
B．By car.
C．By bus.
D．By bik
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单项选择题A．An electrician.B．A mechanic.C．A salesman.D．A plumber.

A．An electrician.
B．A mechanic.
C．A salesman.
D．A plumber.

单项选择题A．It is a war ship.B．It is a one-person underwater vehicle.C．It is a kind of airplane.D．It is a one-person vehicle on the se

A．It is a war ship.
B．It is a one-person underwater vehicle.
C．It is a kind of airplane.
D．It is a one-person vehicle on the se