Most animals have little connection with animals of a different kind, ______they hunt them for food.

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问题 Most animals have little connection with animals of a different kind, ______they hunt them for food.

选项 A、if
B、while
C、unless
D、as

答案C

解析 unless意为“除非、如果不”。句意:大多数动物与其他不同种类的动物都没有什么联系,除非是把它们猎为食物。
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