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Quack！ Quack！It's a duck.

The lamb is cute.

—What's that? —It's a cow.

A:What's that?

B: It's a duck.

A:What's that?

B: It's a tree.

A:What's this?

B: It's a bag.

A:What's this?

B: It's a rubber.

—What's this? —It's a pig.

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