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[Cara. Zhong老师已改] 托福写作——[综合+独立][TPO 47]烦请老师批改!

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发表于 2018-4-17 18:58 |显示全部楼层
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Question:Question: Summarise the points made in the lecture, being sure to explain how they cast doubt on specific points made in the reading passage.There are three arguments listed in the passage against powered flight of pterosaurs. However, the professor says that according to the recent discoveries, pterosaurs may be capable to fly.

The writer asserts that as reptiles, pterosaurs were probably cold-blooded animals which had a slow metabolism and were unable to produce enough energy to fly. On contrast, the lecture argues that fossils discovered show that there are dense and covering furs which indicate that pterosaurs were warm-blooded animals which would produce energy to fly.

In addition, the heavy weight is contended in the passage to suggest pterosaurs could not fly, while the lecturer argues that there are features to indicate these animals are light enough to fly. For instance, the bones of pterosaurs are hollon rather than solid, and the wings are low enough to support the flight.

Third, it is stated in the passage that pterosaurs lack strong leg muscles to run fast and jump high enough to take off from the ground like birds. While according to the speaker, pterosaurs had four legs which make them different from the two-leg birds. This indicates that pterosaurs can fly. Furthermore, scientific research has showen that pterosaurs had no trouble to launch themselves into the sky.


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发表于 2018-4-18 09:47 |显示全部楼层
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发表于 2018-4-18 09:51 |显示全部楼层
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发表于 2018-4-18 09:52 |显示全部楼层
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