17. From the examples of ground squirrels, honeybees and mole rats, those animals have a common behavior.
(A) foraging behavior
(B) learning behavior
(C) altruistic behavior
(D) cognition behavior

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統計： A(0), B(1), C(0), D(0), E(0) #4063975

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#7581701
  答案：C．altruistic be...
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