試卷：無年度 - 2002年10月托福閱讀#20901
| 科目：TOEFL(Test of English as a Foreign Language)托福
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試卷名稱：無年度 - 2002年10月托福閱讀#20901
科目：TOEFL(Test of English as a Foreign Language)托福
26. Why are otters and mussel shells included in the discussion in paragraph 3?
(A) To provide an example of tool use among animals
(B) To prove that certain species demonstrate greater ability in tool use than other species
(C)
(D)
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