What do we know about the test？
A. There were 100 questions on it.
B. It was worth 25 percent of the final grade.
C. The test was an extra credit assignment.
D. The questions were very difficult.
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How does the professor emphasize his point about branding？
A. He uses Aunt Ruby's chicken as an example.
B. He defines it by contrasting it with related concepts.
C. He refers to a book that he has written.
D. He shows a familiar commercial in class.
In Paragraph 2, why does the author list folk superstitions？
A. To suggest that they inhibited true knowledge about snakes from progressing.
B. To emphasize that snakes are considered dangerous by most people.
C. To explain the origins of scientific research into snakes' tongues.
D. To describe the mystery that has been associated with snakes' irregular tongues.
根据索洛经济增长模型，中国的稳态人均收入增长率高于美国的稳态人均收入增长率。
A. 正确
B. 错误
What is the purpose of this conversation？
A. The man wants to borrow the woman's lab notes.
B. The woman is helping the man to write a report.
C. The man asks the woman to study for their test with him.
D. The woman and the man are performing an experiment.
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