Both the lecturer and the reading passage discuss Lambeosaurus, a dinosaur that had a crest on its head. The lecturer casts doubt to the author's assertion on several plausible explanations on Lambeosaurus possessing an axe-shaped crest by presenting three counter-arguments.
First, the lecturer asserts that the purpose of the Lambeosaurus' crest attracting to attract mate is disputable. He says that most reptiles use behavior and sound method to attract mates, and not by without using its crest. For example, crocodiles communicate with its opposite sex by lifting its hand high above or by making a loud noise. Lambeosaurus would use a similar method to these species. this counters the author's assertion that crests have been used to attract mates.
Second, the lecturer claims that crests that are used for combat can be problematic. This is because an analysis of Lambeosaurus' fossil indicates that the crest is placed backwards, not forwards. If crests were actually used for fighting and defending against other Lambeosaurus, the crest should be located in a forward direction. Also, the crests are too fragile to combat. This contradicts the author's assertion that crests are used to protect and fight against others.
Lastly, the lecturer argues that it is highly unlikely that the crest was used to supply air when Lambeosaurus are underwater. This is because the size of the crest, compared to its body, is too small to store enough air for Lambeosaurus to use underwater. Instead, Lambeosaurus would simply take a deep breath to provide air, without the help of its crest. This refutes the author's claim that crest, as a source of air, permitted Lambeosaurus to remain underwater for a long time.
Writing 0–30 score scale: Limited (1-16) / Fair (17-23) / Good (24–30)
ADDRESSING TOPIC
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ORGANIZATION
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PROGRESSION AND COHERENCE
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LANGUAGE USE
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GRAMMAR
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GOOD
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GOOD
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FAIR
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FAIR
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FAIR
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각 카테고리별 SCORE: LIMITED / FAIR / GOOD
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