▶ Your Answer :
It is controversial whether Tyrannosaurus rex could be run fast. The speaker agrees this statement and makes against the author’s claim that T.rex moved slowly, suggesting that they are rather a scavenger than a predator.
First, the speaker says that jungle environment did not hinder for T.rex to move quickly. To be specific, even though there was lot of plant in jungle, they run short distance and hunt animals very quickly. This differs from reading passage’s claim that lots of vegetation in jungle prevents T.rex from running long distance.
Second, the professor argues that it is not necessary to need long, thin legs to move at a rapid pace. Namely, there are many animals which have long, thin legs, but can run fast enough, such as horse and chicken. This contradicts the passage’s position that T.rex with skinny, long legs were hard to run quickly.
Lastly, the lecture asserts that level of body mass of leg muscle might not accurate. To be specific, scale could not show body mass accurately and we do not know exact body mass so we cannot say they have 85 percent of its body mass. This rebuffs the author’s contention that 85 percent of it body mass in legs makes them impossible to run quite enough.
To sum up, the listening contends that the fact that T.rex could not run is absurd and this casts doubt on reading’s claim that T.rex could run slowly enough so they could not catch their prey.
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