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信息发布者:
作业精灵老师示例:
1:
—Is this a butterfly?
—No, it isn't. It's a dragonfly.
2:
—Is this a cicada?
—Yes, it is. It is cute.
3:
4
—Is this a ladybird?
—No, it isn't.
4:
—What's this?
—It is a butterfly
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