题目内容
It was thought that only humans could communicate with people they can’t see; however, whales and dolphins can communicate ____.
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I don’t know whether you could call their communication language or not, but I’ll ____more.
He isn’t counted as knowing a new world unless he’s used it at least ____ in a meaningful way.
Scientists have found that they have an ____ identity and a ____ identity.
What’s more amazing is they have even a ____ identity besides individual identity and group-level identity, so they can distinguish between ____, ____ neighbors, and ____ just like humans.
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