新托福TPO 4综合写作详细解析：恒温动物_托福英语写作

新托福TPO 4综合写作详细解析：恒温动物

　　分论点二的逻辑是：是什么？是所有现代恒温动物的腿都是长在身体下部的，而恐龙的腿也具有同样的特点吗？不是的，腿长在身体下部是恒温动物的必要不充分条件。段内的逻辑是这样的：腿长在身体下部可以快跑可以持续剧烈运动是恒温动物。然后呢？把恐龙带进去。哪个地方是有可能反驳的呢？听力部分一定是要打碎这个逻辑链。

　　分论点三的逻辑是：有哈弗森管可以保护血管和神经可以快速生长恒温动物。而恐龙恰好有恒温动物。反驳的时候一定也是打碎逻辑链啦。

　　这种科学类的题目，很多都是建立在推测的基础上的，所以推理论证就是最常用的方式啦。因为，反驳的时候也一定用打碎逻辑链的方式。

　　听力材料：

　　Many scientists have problems with the arguments you read in the passage. They dont think those arguments prove that dinosaurs were endotherms.

　　很多科学家对你们刚刚听到的文章持有不同意见。他么认为这些理由不能支持恐龙是恒温动物。

　　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. And during the months when the Polar Regions were cold, the so-called polar dinosaurs could have migrated to warmer areas or hibernated like many modern reptiles do. So the presence of dinosaur fossils in Polar Regions doesnt prove the dinosaurs were endotherms.