شرکت در آزمون آنلاین زبان انگلیسی 1 - زبان انگلیسی 1 | آزمون شماره 12348

For years, scientists thought that dinosaurs were big, stupid, and cold-blooded __ in other words, just giant reptiles. There is no doubt that some dinosaurs were huge. But many were about the size of modern-day birds or dogs. Were dinosaurs warm or cold-blooded? Paleontologists are not sure. But they believe some were intelligent. Of course, no dinosaur was as smart as a human or even a monkey. However, some smaller dinosaurs like the two-meter Troodon had fairly large brains.

    In the movies, T-Rex is often a speedy giant. Some scientists think the opposite is true. In fact, this dinosaur could not run very fast. Physically, it was too large. In reality, T-Rex probably moved as fast as an elephant. Also, T-Rex had very small arms. Without strong legs or arms, this dinosaur probably wasn’t a powerful hunter. It may have been a scavenger, only eating animals that were already dead.

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