《《托福北冥神功》-托福综合写作tpo4范文赏析》.pdf

文档介绍：智课网 | 出国考试武侠联盟 拓拂派《托福北冥神功》系列秘笈
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智课网 | 出国考试武侠联盟 拓拂派《托福北冥神功》系列秘笈
综合写作 4
Reading
Endotherms are animals such as modern birds and mammals that keep their body temperatures
constant. For instance, humans are endotherms and maintain an internal temperature of 37°C, no
matter whether the environment is warm or cold. Because dinosaurs were reptiles, and modern
reptiles are not endotherms, it was long assumed that dinosaurs were not endotherms. However,
dinosaurs differ in many ways