单项选择题

A plow is a farm ______ used to break the soil before seeds are planted.

A．instrument
B．appliance
C．device
D．implement
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单项选择题
During the construction of skyscrapers, cranes are used to ______ building materials to the upper floors.
A．toss
B．tow
C．hoist
D．hurl
单项选择题
Gasoline is ______ by the spark plugs in the engine.
A．ignited
B．inspired
C．excited
D．illuminated
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