▶ Your Answer :
The reading passage contends that T.rex wasn't able to run fast enough to catch preys effectively.
On the other hand, the lecturer explains that T.rex definitely had an ability to run fast that contradict this argument.
First, the speaker argues that jungle didn't affect negatively T.rex because they didn't have to chase with extreme speed. This is due to the fact that T.rex would be likely to hunt preys in a very quiet way like tigers and it was more reasonable way to catch them without alerting preys. This casts doubt on the reading which states that jungle environment prevented the dinosaurs from running fast.
Second, according to the speaker, structure of T.rex's legs didn't have bad impact on their running.
It is obvious that they could cover the enormous amount of distances just by brief running.
Furthermore, there are already a lot of animals which can run fast with skinny legs such as a chiken and horse. This refutes the reading passage's assertion that weak legs could play a negative role in their running.
The final point made by the lectureris that it is impossible to know the exact composition of T.rex's body. This is because people are not able to figure out their whole picture of body just based on skelleton. This counters the writer's claim that their lack of muscle was not helpful for their running. |