• 2022-06-01 问题

    Recent studies by the Council of Europe show that ______. A: it is only in Britain that wildlife needs more protection B: all species of wildlife in Europe are in danger of dying out C: there are fewer species of reptiles and butterflies in Europe than elsewhere D: certain species of reptiles and butterflies in Europe need protecting

    Recent studies by the Council of Europe show that ______. A: it is only in Britain that wildlife needs more protection B: all species of wildlife in Europe are in danger of dying out C: there are fewer species of reptiles and butterflies in Europe than elsewhere D: certain species of reptiles and butterflies in Europe need protecting

  • 2022-05-29 问题

    The ancestral amphibian group which led to reptiles, birds, and mammals is called the ( ) lineage. A: quadruped B: gnathostome C: nonamniote D: amniote E: agnathan

    The ancestral amphibian group which led to reptiles, birds, and mammals is called the ( ) lineage. A: quadruped B: gnathostome C: nonamniote D: amniote E: agnathan

  • 2022-05-30 问题

    It can be inferred from the passage that scientists now generally agree that the ______. A: enormous wingspan of the pterosaurs enabled them to fly great distances B: structure of the skeleton of the pterosaurs suggests a close evolutionary relationship to bats C: fossil remains of the pterosaurs reveal how they solved the problem of powered flight D: pterosaurs were reptiles

    It can be inferred from the passage that scientists now generally agree that the ______. A: enormous wingspan of the pterosaurs enabled them to fly great distances B: structure of the skeleton of the pterosaurs suggests a close evolutionary relationship to bats C: fossil remains of the pterosaurs reveal how they solved the problem of powered flight D: pterosaurs were reptiles

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