L2
讲座
1. What is the lecture mainly about?
A study that disproves a commonly-held hypothesis about the origins of a species of butterfly
How Nabokov incorporated DNA analysis into his research
Research that supports an early hypothesis on a group of butterflies
The influence of Nabokov’s scientific research on his fiction
2. What does the professor assume about the students when she first mentions Nabokov?（多选题）
That they probably knew that he was a famous fiction writer
That they have completed reading a research paper that he wrote
That they are unaware that he had done research on butterflies
That they enjoy reading science fiction
3. Why does the professor mention that Nabokov was a self-taught scientist?
To explain why she is unimpressed with Nabokov’s bold hypothesis
To explain why Pierce had delayed reading Nabokov’s research paper
To encourage the students to evaluate Nabokov’s research carefully
To offer one reason why the scientific community of Nabokov’s time rejected his ideas
4. What are three steps that Pierce took in order to test Nabokov’s hypothesis?（多 选题）
She studied the wing patterns of North and South American species of blues.
She analyzed the DNA of American and Asian species of blues
She determined how the climate had changed over millions of years in the Bering Strait region.
She studied the effects of prolonged lack of food on migrating species of blues
She studied existing blues’ tolerance to various temperatures
5. What did Pierce conclude about blues as a result of her research?
The American species share a common Asian ancestor.
The American species had been wrongly classified by Nabokov
Most North American species originated in South America.
Most species would have been unable to cross the Bering Strait.
6. What is the major difference between blues that migrated across the Bering Strait in the first wave versus in the later waves of migration?
The first blues to migrate were a darker shade of blue
The first blues to migrate thrived in warmer climates.
The first blues to migrate settled mainly in North America
The first blues to migrate had larger wings.
