Set1-L3
1. What is the lecture mainly about?
A. The relationship between the dinosaur extinction and a more recent mass extinction
B. The classification of megafauna fossils found at Cuddie Springs
C. Conflicting ideas regarding the extinction of large animals
D. Reasons that scientists have difficulty determining the age of megafauna fossils
2. What does the professor say about the megafauna that existed in Australia before the late Pleistocene? Click on 2 answer
A. The megafauna included a very wide variety of species
B. Most of the megafauna had originated outside of Australia
C. Most of the megafauna lived in one region of Australia
D. Almost all the megafauna disappeared during the late Pleistocene
3. According to the professor, what is the significance of the Cuddie Springs excavation site?
A. It is one of the world’s largest paleontology research sites
B. It contains some of the oldest fossilized human bones ever found
C. The objects fund there support the human-driven extinction theory
D. Both megafauna fossils and human artifacts were found there
4. What do the speakers imply about fossils found in a sedimentary rock?
A. The fossils probably originated in areas near bodies of fresh water
B. The fossils were often damaged as sand solidified into rock
C. Fossils found in the same layer of rock may not be the same age.
D. Fossils in the upper layers of rock were used as tools by early human
5. What does the professor imply about the advocates of the HDE theory
A. They are generally reluctant to try new technologies
B. They are not always objective in their interpretation of evidence
C. They are often too reliant on radiocarbon dating results
D. They generally welcome challenges to their theory
6. What opinion does the professor express at the end of the lecture?
A. Human likely played no role in the extinction of Australian megafauna
B. Studying past extinctions might help scientists predict future ones
C. Prehistoric megafauna probably adapted more quickly to climate change than small animals did
D. Most mass extinctions probably have multiple causes