单项选择题

A．Because they were driven by steam power.
B．Because they did the work that animals used to do.
C．Because they pulled cars full of coal.
D．Because they were made of iron.
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单项选择题
A．A giant deer.B．A huge animal.C．A strange man.D．A hairy creature.
A．A giant deer.
B．A huge animal.
C．A strange man.
D．A hairy creature.
单项选择题
A．In the fields.B．At the market.C．In a plant garden.D．In a classroom.
A．In the fields.
B．At the market.
C．In a plant garden.
D．In a classroom.
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