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信息发布者：
I can run and jump .
This is a cow . That' s a lamb .
I can see four ladybirds .
（1）A: How many rulers ? B : Three rulers .
（2）A: How many pencils ? B : Five pencils.
（1）A: What's this? B: It's a bottle.
（2）A: What's that? B: It's a bird.
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