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题目材料:

According to the passage, sloth bones found at Pikimachay have been used by some scholars in an effort to determine which of the following?
  • AWhen Pikimachay might have first been occupied
  • BWhat sort of human culture might have existed at Pikimachay
  • CWhat sort of diet any humans at Pikimachay might have had
  • DHow many people the Pikimachay area could have supported
  • EHow many sloths existed in the Pikimachay area

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