L2：
Lecture 2
第一题
What is the discussion mainly about?
A Methods used to determine whether fossils belong to a dinosaur
B The challenge of determining the number of dinosaur species
C Evidence that dinosaurs existed later than previously thought
D Similarities between two closely related dinosaur species
第二题
What point does the professor make about paleontologists in the late 1800s?
A They were often more interested in personal recognition than in scientific accuracy.
B They generally sought more training than other types of scientists did.
C Most of them became fascinated with dinosaurs at a very young age.
D They collaborated to study newly discovered dinosaur fossils.
第三题
What does the professor emphasize about the current guidelines for naming new dinosaur species?
A They are somewhat controversial.
B They are based primarily on skull analysis.
C They are in the process of being updated.
D They are much stricter than the guidelines of the past.
第四题
According to research mentioned by the professor, what is the relationship between Triceratops and Torosaurus?
A They represent the same species at different stages of development.
B They utilized different resources in their shared habitat.
C Torosaurus died out before Triceratops came into existence.
D Torosaurus probably preyed on Triceratops.
第五题
What is the professor explaining when she asks the students about the fossilization process?
A Why dinosaur fossils are particularly easy to find in certain parts of the world
B Why some dinosaur species may not be represented in the fossil record
C Why skulls and teeth are more likely to fossilize than other dinosaur bones are
D Why dinosaur fossils are better preserved than most other kinds of fossils
第六题
What does the professor imply about dinosaur DNA?
A It is surprisingly complex.
B It has already helped paleontologists identify new dinosaur species.
C It will probably never be very useful to paleontologist.
D It holds promise for confirming the identification of species in the future.
