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Most of the year, the hermit thrush, a North American songbird, eats a diet consisting mainly of insects, but in autumn, as the thrushes migrate to their Central and South American wintering grounds, they feed almost exclusively on wild berries. Wild berries, however, are not as rich in calories as insects, yet thrushes need to consume plenty of calories in order to complete their migration. One possible explanation is that berries contain other nutrients that thrushes need for migration and that insects lack.

Which of the following, if true, most seriously calls into question the explanation given for the thrush`s diet during migration?

【选项】Along the hermit thrushes` migration routes, insects are abundant throughout the migration season.

选项是否正确?

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题目基本信息

  • 所属科目:逻辑CR
  • 题目来源1:OG16-97
  • 题目来源2:OG17-640
  • 题目来源3:OG18-642
  • 题目来源4:OG19-642
  • 题目来源5:OG20-733
  • 题目来源6:OG2022-790
难度:难