托福TPO47综合写作真题解析

TPO，即toefl Practice Online的首写字母，就是托福在线练习的意思，TPO可以为考生提供全真的模拟考试环境和过往真题，而TPO题库也是有着不断的更新。在托福写作备考的过程时候，大家往往会把更多的精力放在托福独立写作的准备中。但是，想要冲刺的托福写作的高分，综合写作也是我们必须要冲过的一个难关。今天，小编就为大家带来托福TPO47综合写作真题解析。

托福TPO47综合写作真题解析： 【在线咨询】

Question: Summarize

话题：Biology 生物学
材料要点重现：lecture中教授的观点是翼龙可以飞。原因有三点，第一是翼龙是暖血动物可以产生飞行所需能量。第二是翼龙骨头是空心的所以很轻。第三是翼龙飞行可以用四肢而不只是后肢。
高分词汇：contradict, reptile, cold-blooded, repute, metabolism, aloft, hollow, airborne, flap, launch

托福综合写作范文：  【在线咨询】

In the reading passage, the writer claims that large pterosaurs were incapable of powered flight. The speaker, however, contradicts this view for the following three reasons.
First of all, the reading materials points out that ancient reptiles such as pterosaurs were probably cold-blooded and were incapable of producing enough energies for flying. But the speaker reputes that pterosaurs had a dense, hair-like covering which was typical of warm-blooded animals whose metabolism was able to supply the energy required for powered flight.
Second, the author states that pterosaurs were too heavy to stay aloft for any length of time. But the lecturer suggests that the bones of pterosaurs were hollow instead of solid. Therefore, although they had large body frames, the pterosaurs' weight was probably low enough to allow them to keep themselves airborne by flapping wings.
Lastly, the author indicates pterosaurs lacked the big, powerful muscles in their back legs to run fast enough or jump high enough to launch themselves into the air. Contrary to the reading passage, the speaker emphasizes that unlike birds which used just the back limbs, pterosaurs used four limbs to push off the ground.

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