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题目材料:

Which of the following best describe the function of the highlighted sentence?
  • AIt identifies a factor that complicates biologists` ability to draw conclusions about the behavior of cetaceans in their natural environments.
  • BIt illustrates the kind of deduction mentioned in the preceding sentence.
  • CIt explains why skeptics have remained unpersuaded by evidence that has been put forward in support of the claim that cetaceans have culture.
  • DIt introduces a claim that would be dismissed by both supporters and opponents of the view that cetaceans have culture.
  • EIt notes a previously overlooked factor that might shed light on the question of whether cetaceans have culture.

B显示答案

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