托福阅读修辞目的题是阅读考试中比较常见的一种题型，tpo则是托福阅读备考最权威的材料 ，所以托福小编综合二者，为大家集中整理了tpo阅读中考察的修辞目的题及其对应的解析，供大家参考使用。本文带来的是TPO8-2的修辞目的题，一起来看看吧。
TPO8-2 Extinction of the Dinosaurs
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.
3. 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
解析：先读所在句，说为什么诸如blabla之类的动物能耐得住这种极端气候呢，而且这句一开始就来了个if true，所以应该是作者在质疑上端所提出的结论的正确性，而且最后一句是本段的中心句，说将气候变化的原因归于sea level是不对的，所以答案是B。
[3]如果真是这样，那么为什么冷血动物，比如蛇类、蜥蜴、乌龟和鳄鱼却能够幸免于寒冬和酷夏呢?这些动物都是依赖于气温以使其身体保持适合生存的温度。很难理解它们为什么毫不受影响，然而恐龙却如此的无能以至于无法适应，尤其是有些科学家认为恐龙是热血动物。批评者们也指出浅海在中生代曾有过无数次的进入大陆而又退回盆地的过程，所以为什么恐龙在前面的海洋起伏中能幸免于难，而在这一次中却不能呢?尽管最初人们这样认为，但是简单的与海平面高度有关的气候变化假设是不足以解释所有数据的。
以上就是托福阅读TPO8-2中的修辞目的题及其解析，大家可以在备考的时候参考复习，希望能够帮助大家的考前准备。最后前程百利祝大家都能取得理想的托福考试成绩。
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