A．They are a type of insect.B．They are a kind of fish.C-找考题网

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A．They are a type of insect.
B．They are a kind of fish.
C．They are a type of bird.
D．They are a type of pig.

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A．A round piece of stone.B．A heavy log.C．Two slices of log connected at their centers by a strong stick.D．A piece of metal.

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