题目内容

No sharks are pets, since no barracuda （梭鱼类）are pets, and no sharks are barracuda.

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Some bankers are vegetarians. No anarchists are bankers. So, some anarchists （无政府主义者）are not vegetarians.

No poker players are early risers（早起的人）. Some firefighters（消防队员） are early risers. So, some firefighters are not poker players.

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