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[Cara. Zhong老师已改] 托福写作-综合-tpo47

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发表于 2018-2-14 01:11 |显示全部楼层
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Summarize the points made in the lecture, being sure to explain how they cast doubt on the specific points made in the reading passage.


The reading passage explores the issue of whether Pterosaurs can fly or not. The reading passage states that there is no possibility for them to fly owing to their metabolism system, the huge size and weight to fly aloft, and their weak legs to enable the to take off just like the birds in modern age.
The professor in the lecture declares that there is a new finding which is Pterosaurs having dense hair-like covering. The existence of fur like birds supports that it's possible Pterosaurs are warm blood animals and implys that they own good metabolism system providing enough energy for powered flight.
Moreover, contrary to the statement in the reading that Pterosaurs are too heavy to launch from the ground, the professor contends that their unique anatomical feature would solve the doubts. Their bone is hollow  which would significantly reduce their weight even though they got huge sizes. In other words, the hollow bone greatly decrease their weight low enough for flying aloft.
Finally, the professor asserts that Pterosaurs can launch by four legs whereas the author of the reading claims that large Pterosaurs couldn't take off with legs jumping or running to get speed. The professor proves that unlike birds walk on the ground with two legs, they can use four legs move forward. Therefore, it's possible for them to use four legs pushing up and launching.


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