这里是
以下内容仅供同学们学习使用·禁止转载
今天继续分享TPO71的综合写作范文。
(tpo70听力破损，暂缺)
又是关于恐龙的构造的。作为ETS亲宠物，恐龙🦖是很经常考到的动物了。综合写作尤其喜欢考察这些古生物的构造。难词多，信息量大。大家也很少有相关背景知识，众生平等
这篇的难点是：
听力信息量大。大家要反复多听，且要提升笔记，比如修改，增加笔记符号储备。争取在有限的时间内，把所有重要信息都简明扼要地记下俩。
阅读文章
The fossil record shows that members of the group of dinosaurs known as lambeosaurs had large bony crests on top of their heads The shape of the crests varied from species to species, but all lambeosaur crests contained extended hollow passages. No one really knows exactly what function the crests served, but scientists have offered several theories.
Sense of smell
One theory holds that the primary purpose of the crests was to improve the dinosaurs' sense of smell. Examination of the fossils has suggested that the crests contained many blood vessels. The nose bones of modern animals with a highly developed sense of smell have a similar inner structure characterized by a high density of blood vessels. Thus, it is reasonable to conclude that the crests were primarily used to enhance the sense of smell.
Cooling
A second theory maintains (hat the crests served to prevent overheating by lowering lambeosaurs1 body temperature. The addition of a crest had the effect of increasing the surface area of the lambeosaur’s body, thereby allowing body heat to escape more rapidly. Other warm-climate dinosaurs, stegosaurs for example, also had bony crestlike plates on parts of their body that increased the body surface area. It has long been believed that the bony plates of stegosaurs were adaptations to improve cooling, so it seems likely that the crests of lambeosaurs served the same purpose.
Sound
A third possibility is that lambeosaurs used the crests to make sounds, perhaps for communication with other lambeosaurs It was definitely possible to make low sounds by forcing air through the crests. This theory is supported by a finding suggesting that lambeosaurs had a good sense of hearing paleontologists recently discovered remains of a lambeosaur that had a highly developed inner ear. A good sense of hearing would be necessary for animals communicating by sound
听力+ 笔记
注意听力逻辑层次/笔记层次:
1.第一个中间段：用一个理论来反驳LB. (理论听懂了，就简单了)
2.第2段：根据动物的不同，来反驳.(听懂一个，第2个就很清晰了)
3. 第3段：缺乏足够的证据. 比较简单。
可积累的笔记📒符号（仅供大家参考）：
1. structure: 8
2. animal:动
3.organ: OG
4. develop: dvp
5. fossil: 石
6. species: sps
参考范文
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