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7.14 综合

The reading part lists several evidence to support the idea that the dinosaurs are endotherms. However, the listening part casts doubts on the points in the passage.



According to the listening part, the polar region mentioned in the reading passage is much warmer than it is today. Even when the temperature  becomes cold, dinosaurs can migrate to warmer places or even hibernate there. So the fossils found in polar region mentioned in the reading passage can not be the convincing evidence that dinosaurs are endotherms.



Apart from the point above, the listening material also believe the position of dinosaur  legs is not convincing, either. According to the listening material, the legs underneath the body can help dinosaurs grow into large size, and this big size can be advantagous to them.  At this point, the listening part contrasts the reading passage.



Also, the listening part indicates the structure of dinosaurs mentioned in the reading material unconvincing. According to the lecture, there is another vital structure which indicates  dinosaurs stop growing in cooler period. This characteristic, however, directly contrasts the idea in the reading part that dinosaur is endotherms, because this trace is not one of those endotherms.



Word Count: 196