．Elephants, which are the largest mammals on the earth, have almost no natural enemies hu

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A. rather than
(答案→)B. other than
C. more than
D. less than
解析：短语辨析。rather than 而不是； other than 除了，不同于；more than 多于，超出； less than小于，不超过。句意：大象，地球上最大的哺乳动物，除了人类几乎没有天敌。故选B。