口语跟读训练

山姆大叔

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Many scientists have problems with the arguments you read in the passage. They don't think those arguments prove that
dinosaurs were endotherms.


Take the polar dinosaur argument. When dinosaurs lived, even the polar regions, where dinosaur fossils have been found,were much warmer than today, warm enough during part of the year for animals that were not endotherms to live. Andduring the months when the polar regions were cold, the so-called polar dinosaurs could have migrated to warmer areas orhibernated like many modern reptiles do. So the presence of dinosaur fossils in polar regions doesn't prove the dinosaurs were endotherms.


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vicky_niu

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来自留学微吧-IOS

vicky_niu

来自留学微吧-IOS

vicky_niu

来自留学微吧-IOS