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托福阅读修辞目的题：crocodiles

2015-08-12 16:48:20来源：网络

　　【托福阅读题型：crocodiles修辞目的题】托福阅读中句子插入题是重要题型之一。根据托福阅读题型不同来进行专项练习，是短期提高托福阅读能力的有效方法。同学们需要多加练习哦!

　　查看全部：托福阅读题型分类练习之修辞目的题

　　托福阅读修辞目的题：crocodiles

　　【Paragraph 3】If true, though, why did cold-blooded animals such as snakes, lizards, turtles, and crocodiles　survive the freezing winters and torrid summers? These animals are at the mercy of the climate to maintain a livable　　body temperature. It’s hard to understand why they would not be affected, whereas dinosaurs were left too crippled to　cope, especially if, as some scientists believe, dinosaurs were warm-blooded. Critics also point out that the shallow　　seaways had retreated from and advanced on the continents numerous times during the Mesozoic, so why did the　dinosaurs survive the climatic changes associated with the earlier fluctuations but not with this one? Although initially　　appealing, the hypothesis of a simple climatic change related to sea levels is insufficient to explain all the data.　　(Extinction of the Dinosaurs)

　　

　　Why does the author mention the survival of “snakes, lizards, turtles, and crocodiles” in paragraph 3?

　　○To argue that dinosaurs may have become extinct because they were not cold-blooded animals

　　○To question the adequacy of the hypothesis that climatic change related to sea levels caused the extinction of　the dinosaurs

　　○To present examples of animals that could maintain a livable body temperature more easily than dinosaurs

　　○To support a hypothesis that these animals were not as sensitive to climate changes in the Cretaceous period　as they are today

　　答案见下一页：

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